RELAP5/RELAP5-3D Plug-in Change Log

Version 6.9.2 - Released 2/16/2024:

• An issue has been resolved with hydro connections to 1D hydro components that did not preserve the target cell or target face when opening the editing dialog.
• The control input arguments and trip input arguments dialog has been updated to resolve an issue that prevented pasting in references to signal variables.
• The Model Notebook export was updated to write the multi-dim face names.

Version 6.9.1 - Released 12/15/2023:

• Restart Cases have been updated to correctly export numeric references within numeric strings.
• ASCII import of models using UNIX substitution and resource files has been updated to create all the SNAP Variables required for the model. A bug was fixed that created extra variables when the resource file was not used.
• Copying/Pasting a heat structure component will not copy and paste a new material if a matching material exists in the model.
• Copying and pasting multi-junction components has been updated to correctly show the connections in the Multi-Junction Junctions dialog.
• Copying and pasting branch components has been updated to correctly show the connections in the External Junctions dialog.
• Control Blocks have been updated to support copying/pasting with connections.

Version 6.9.0 - Released 11/3/2023:

• A new numeric connection management system has been added for external junction typed hydraulic components. This new functionality allows assigning numeric integer values to connection locations. When those numerics are changed (or when the user defined functions execute), the connection locations are automatically updated to the location defined by the numeric.
• Added the Included Views node to the comparison dialog for restart cases.
• The ASCII import logic has been updated to convert the values in a UDN prefix for British Models.
• Numeric Integers that are enumerations have been updated to export to the resource map with their integer value, not the enumeration name.
• Importing a resource file with unix substitution does not trim the input line after 80 characters.
• Importing a resource file when the resource model is open no longer alters the names of the numeric variables.
• A new numeric connection management system has been added for external junction typed hydraulic components. This new functionality allows assigning numeric integer values to connection locations. When those numerics are changed (or when the user defined functions execute), the connection locations are automatically updated to the location defined by the numeric.
• General Tables have been updated to support being defined as a Unitless table. This allows using any engineering unit of variable in the table.
• Updated the T-Flag property for Time Dependent Volumes to allow numerics.
• The T-Flag property in Time Dependent Volumes now displays an understandable representation of the selections.
• The B-Flag property and T-Flag properties for Time Dependent Volumes have been removed from the Fluid Conditions dialog and added to the Time Dependent Volume component property view.
• The Additional Junctions Data property tab for hydraulic components is now enabled whenever there’s one or more values to be set inside the table.
• ECC Mixer, Jetmixer, Turbine, and Feedwater Heater components have been updated to include a property that can be used to edit junction connections.
• The Control Input Selection Dialog has been modified to sort Control Systems alphabetically and then numerically off the component numbers.
• Drawn Control Blocks were updated to label each input connection.
• An issue was fixed in which the unitless type for GeneralTable was incorrectly exporting numerics to their converted value.
• An issue was fixed in which the ASCII import with unix substitution was converting values before the models engineering units were determined.
• The sub-system integration behavior for general tables has been updated to resolve the appearance of a false error message.
• The preserve numerics behavior for restart cases was updated to resolve an issue where unitless general tables would not identify numerics referenced in the table data.

Version 6.8.0 - Released 8/9/2023:

• An ASCII import issue was resolved that could cause an error creating missing real variables during a resource import.
• THe NRC Version of RELAP was updated to support components from the version 5.0 Mod 3.3 LJ
• A warning and an error are reported for restart cases when using a model from 4.1.2.
• An issue was resolved that resulted in the HTMWPOW and HTMWRQ heat signal variables being included in the component signal variable category.
• An issue was resolved in which the control input selection dialog did not select all variables newly created from within the dialog.
• The NRC Version of RELAP was updated to include the following developmental options found in Model Options: 31, 35, 40, 44, 46, 47, 49, and 81
• The NRC Version of RELAP was updated to include Optional User Models. The support now allows 3 optional models.
• RELAP was updated to include the following signal variables: QUALMH, QUALJMH, VFTHRT, and VGTHRT
• The Trip components (Logical Trip and Variable Trip) have been updated to have more help description for the Time Of property.
• Variables Trips and Control Blocks were updated to have an optional Execution Trip Reference.
• Single Volumes have been updated to have a T Flag 8 Option that includes initial conditions for Pressure, Temperature, Static Quality, and Relative Humidity. Single Volumes have also been updated to include a Variable Volume Model that defines the volume length in each of the 3 coordinate directions (x, y, z).
• Single Volumes, Pipes, and Annulus have been updated to have an optional Structure Element Model.
• Heatstructures have been updated to have a 6- or 7-word format for the left and right boundary conditions.
• Radiation Enclosures have been updated for NRC version of RELAP to support extra component numbers.
• Control Blocks in the NRC version of RELAP5 have been updated to have the following types: FDATA, SBLOCK, R_INT, R_PI, R_PD, R_PIP, and R_PID.
• The NRC version of RELAP5 has been updated to include a methane noncondensable gas.
• Resolve an issue which could cause error messages in the model editor screen file when closing the 3D View Dialog.
• Valves have been updated in the NRC version of RELAP to support the Swing Check Valve type and the Tilt Check Valve type.
• Valves have been updated to allow a 4th option for the Shaft Mode enumeration and new words have help text.
• An issue importing completed RELAP5-3D jobs that use a pib-based plot file has been resolved that would prevent identifying the file type of the restart file correctly.
• The General Table connection to a FUNCTION type control block will now draw to a separate connecting point. Additionally, the connection line will be labeled to identify which of the connections come from a General Table.
• The ownership for the managing property of a connection is updated when that connection is disconnected inside a view.
• Restart Cases have been updated to have help text and only cache views that have been changed by the user.
• An issue with the Partial ASCII Import was resolved that could cause erratic behavior with existing SNAP variables after an import
• The variable mapping for Partial ASCII Export / Import was updated to allow the value of a variable to be included by adding a "v:" tag to the end of the line, followed by the value of the variable.
• An issue with the Partial ASCII Import was resolved that would report an error if the '100' record is not included in a Partial ASCII input file.
• A Partial ASCII import will not change the control block number format unless the 20500000 record is included in the input file.
• The Partial ASCII Export component selection dialog has been updated to show the currently selected and available components in two lists, to simplify the process of selecting multiple components.
• An issue was resolved that would allow selecting a trip component as the input to a control block or a variable trip.

Version 6.7.4 - Released 6/8/2023:

• The initial condition sets have been updated to resolve various issues retrieving initial conditions from plot files. These issues would prevent retrieving conditions for components using liquid and vapor velocities.
• The RELAP5 plug-in now uses XStream for reading and writing XML files.
• An issue has been resolved with multiple junctions that would prevent new connections from being displayed in a 2D view.
• The message reported when there is an invalid component number is used has been elevated from warning to error.
• Added the ability to resize tables through the use of python bindings.
• The connection tool behavior has been updated to reset attribute ownership and reviewer data when adding or remove connections.
• The general table ASCII export behavior has been updated to write out default values for inactive Independent Factor, Dependent Factor and Additive Constant when any of the values are activated.
• Restart cases were modified to preserve modifications to 2D Views made while graphically editing a view. Those changes are stored in a View Template that will be applied to the view when the case is reopened for graphical editing.
• The way numeric references are preserved for restart cases has been updated to be derived from the variable name.
• Added the ability to import a partial RELAP5-3D ASCII input model on top of an existing model.
• The General Table input for FUNCTION control blocks appears as a connection in 2D Views.
• The input trip for a TRIPUNIT control block is shown as a connection in 2D Views.
• Updated the python bindings component deletion to disconnect connections.

Version 6.7.3 - Released 5/18/2023:

• Added the ability to create and delete components through python bindings.
• Added the ability to resize tables through the use of python bindings.

Version 6.7.2 - Released 3/22/2023:

• An issue was fixed where the count property for multi-logical trips was not restart editable.
• An error was corrected when using python bindings to interact with hydro systems.
• An error was corrected which prevented sub-system integration from integrating when hydraulic systems were defined.

Version 6.7.1 - Released 2/16/2024:

• Trip Time Of must be -1 or 0 outside of a restart case.
• Input connection to trip number 0 no longer reports an error when creating the input connections.
• Warning messages are now shown for when an invalid input for operator and latch is encountered during ASCII import.
• Logical Trip components have been updated to support drawing when connected to itself and another component. Additionally, an issue was resolved in the Logical Trip Input connection editor where the source input should only be a Trip (i.e. Logical Trip or Variable Trip). This will not break any current connections but will prevent future connections from allowing inputs that are not Trips.
• The kinetics comparison behavior has been updated to prevent merging volume and heat weighting table entries to components that do not exist in the target model.
• The Python bindings have been updated to include access to the enabling logic for attributes. These are available through a new attribute with "_enabled" appended to the base attribute name. So the enabling state for a 'length' property can be determined using the "length_enabled" attribute.
• Value based comparison / merge behavior support has been completed, and includes all RELAP model elements

Version 6.7.0 - Internal Release:

Version 6.6.5 - Released 9/9/2022:

• The sensitivity coefficient support for RELAP5-MOD3 has been updated to include the additional coefficients as defined by the lj version of the RELAP5-MOD3 users manual. In addition, the sensitivity coefficients have been modified to display the modifier value in the appropriate engineering units for the coefficient.

Version 6.6.4 - Released 8/19/2022:

• Updated to require a EULA for installing the RELAP5-3D plug-in.
• The python bindings were updated to follow the new components/enums module structure.
• Replaced deprecated method calls in legacy MED read behavior.
• The RELAP5 and RELAP53D job steps now default to interactive off. This ensures that the interactive flag option does not prevent cases from running with executables which may not have the interactive option supported.
• The import selection UI was updated to now include a drop-down listing of supported code flavors and versions.
• Control Block properties Hold Positions and Power have now allow specifying user defined numeric integers.
• The plug-in was updated to provide the ability to find usages of control system components.
• An error was resolved where multi-dim component angle options "EULER" and "PYR" were not written in lowercase on export.
• The 1D hydraulic renodalization dialog has been updated to always open in the center of the Model Editor, and to clean up the appearance of the OK & Cancel buttons.
• The python bindings were updated to better handle access to disabled properties, especially the disabled properties of cells and edges in 1D hydraulic components.

Version 6.6.3 - Released 2/28/2022:

• The python test harness has been changed to allow generic calls to different plug-ins instead of being hardcoded for RELAP.
• Changes made to the RELAP library to support the latest version of the Diff/Merge plug-in.
• The value based comparison / merge behavior for time dependent volumes has been updated to prevent merging of tabular data and display an information message when one time dependent volume uses tabular data, and the other uses control systems.
• The value based comparison / merge behavior for time dependent junctions has been updated to resolve an issue where comparing a mass flow TDJ against a velocity TDJ would match the velocity arrays to the mass flow arrays when they should be identified as orphans (only one side).
• The value based comparison / merge behavior for control blocks has been updated to resolve a number of issues:
• An issue has been resolved that would prevent comparing two control blocks where the left control block has fewer connections than the right control block.
• The input connections merge behavior for control blocks was updated to prevent merging input connections beyond the expected number of input connections for the control block type.
• The merge behavior for control blocks was updated to prevent attempting to merge input connections into a control block that does not support any input connections.
• Logical Trips, Variable Trips, Control Blocks, General Tables, and Interactive Variables have been updated to support value based comparison and merge of differences.
• The Pump and Compressor properties have been updated to allow setting their inlet and outlet connections through the Property View. The ASCII contexts for the inlet and outlet connections now highlight the appropriate property view property when edited.
• Accumulators have been updated to allow setting their inlet connections through the Property View. The ASCII context for the inlet connection information now highlights the "Inlet" property view property when edited.
• The display name for the property of a Compressor that controls whether or not the outlet junction is included with the compressor component has been changed to "Outlet Option".
• The responsiveness of the Model Editor user interface has been improved for models with a very large number of signal variables.
• The Typpwr sample has been updated to include a sample Job Stream.
• The RELAP ASCII view has been updated to prevent the warning message indicating a line exceeds 80 columns from appearing if that line includes a Unix substitution variable name.
• The editing dialog for hydraulic connections has been updated to resolve an issue that prevented setting an axial cell number by typing in a value.
• The value based comparison and merge capabilities have been extended to all 1D hydraulic components and CCFL models. The list of components that support this behavior includes: 
• Annulus, Pressurizer, Valve, Single Flexible Wall, Accumulator, Branch, ECC Mixer, Jet Mixer, Feedwater Heater, Pump, Compressor, Separator, Turbine, Time-dependent volume, single volume multiple junction, multiple flexible wall components, and CCFL.
• The value based comparison / merge behavior has been updated prevent merging sub-element floating point properties that reference an orphan numeric variable. Numeric variables must be merged into the target model before merging properties.

Version 6.6.2 - Internal Release

Version 6.6.1 - Internal Release

Version 6.6.0 - Released 10/29/2021:

• CCFL models have been updated to automatically be included with referencing hydraulic components during a copy/paste operation unless a matching component exists in the target model.
• An issue was resolved in the RELAP5 demultiplexer that caused the resulting demux files to contain corrupt data if the model contained interactive variables with names that contain underscore (_) characters.
• An issue has been resolved that would cause the global find dialog to merge multiple lines together when searching generated ASCII including end line comments.
• The RELAP53D jar has been renamed from relap53D.jar to relap5.jar.
• The RELAP5 plug-in has been updated to provide python bindings for working with RELAP5 model input. As part of this update, component access methods have been added to the python RELAP5 model implementation. These methods obtain python component object wrappers which can be used to interact with their representative components in the model. These component wrappers include methods for accessing and modifying their respective model component input. Currently, support is provided for the Model Options, Pipes, and Single Junction components. Comprehensive docstring documentation is supplied for each of the available python component methods.
• The RELAP5 plug-in has been updated to support graphical comparison and merge for a limited selection of components. To enable graphical comparison, set the RELAP5 plug-in preference for "Comparison Method" to "Value Merge". Currently only the Model Options, Pipe and Single Junction components are supported.
• The Model Options, Pipe, and Single Junction components have been updated to support value based comparison and merge of differences.

Version 6.5.1 - Released 8/13/2021:

• Maintenance release for SNAP 3.1.9.

Version 6.5.0 - Released 7/8/2021:

• An issue was resolved in the Trip/Control Block Input connection editor where the incorrect source input is selected when the table is sorted.
• Newly created restart cases will now default the Preserve Numerics flag to true. This flag indicates that references to user defined numerics inside the components should be preserved when generating the restart cards. This allows for calculated values to be used when generating restart case data.
• The name of interactive control system variables will now be set lowercase when defined using the editor (NOTE: This does not affect the names of interactive control variables in existing models).
• Newly created Multiple Flexible Wall and Multiple Junction components will no longer export using compressed format by default.
• A misalignment of the Time Dependent Junction Junction Flag Comment Header was corrected such that the header now appears properly aligned to the junction flags value.
• Control blocks have been updated to resolve an issue where graphically editing a restart case that includes a control block with a feedback input connection could duplicate that input connection.

Version 6.4.9 - Released 5/21/2021:

• The plug-in's Job Stream functionality was updated to support platforms (such as AWS Batch) which use remote locations for intermediate files staged between tasks.

Version 6.4.7 - Released 10/25/2020:

• An issue was resolved that caused the spacing in the pipe wall completion dialog to be inappropriately offset.
• An issue was resolved in the heat structure and pipe wall completion dialogs that prevented the material initialization dialog from being shown for materials created inside these dialogs.
• An issue was resolved in the Axial Cells/BCs dialog that prevented Cancel from discarding edits to heat structure surface connections to hydraulic components.
• A Help button has been added to the Signal Variable creation dialog.

Version 6.4.6 - Released 10/6/2020:

• The ASCII export logic of RELAP5/MOD3 grid spacers component has been updated to handle references to heat structure nodes numbered 10 or greater.
• Heat structures have been updated to allow selecting boundary type [5XXX] Alternate Fluid Coupling when the code version is set to RELAP5-3D 4.0 or greater.
• The plug-in has been updated to allow managing the sets of initial conditions through the SNAP function system.

Version 6.4.3 - Released 7/26/2020:

• The plug-in has been updated to resolve an issue which prevented editing the Henry Fauske choked-flow coefficients in RELAP5/MOD3 models.
• Support has been added for interacting with the RELAP5 plug-in in Python directed job streams.

Version 6.4.2 - Released 6/15/2020:

• ECC Mixer logic has been updated to fix the face index for junctions created using the connect tool in SNAP. This does not affect models that have been imported. The junction face indexes for ECC mixers are corrected automatically when a model is opened.

Version 6.4.1 - Released 5/29/2020:

• The expanded plot variables editing dialog has been updated to change the initial dialog size and split pane divider locations to improve the initial layout.
• The ECC Mixer ASCII export logic has been updated to ensure that the ECC mixer cell location is written as the target for the ECC inlet and primary inlet junctions, and the ECC mixer cell location is written as the source for the ECC outlet junction.
• The ECC Mixer 2D drawing code has been updated to correct the junction indexes associated with the drawn connection locations. The ECC inlet junction is junction 1, the primary inlet is junction 2 and the outlet is junction 3.
• The ECC Mixer drawn component has been updated to ensure that the angle of the connection lines to the ECC mixer is consistent with the orientation angle of the mixer.
• ECC Mixer components that have the incorrect flow direction for the ECC inlet and primary inlet junctions will be automatically updated when a MED file is opened. A warning message will be reported in this case.
• An issue with the model notebook export batch command has been resolved where cross references to variables are displayed incorrectly in the ASCII sections of the model notebook.

Version 6.4.0 - Released 3/4/2020:

• Updated to work with Java 11. Methods that have been deprecated in Java 11 have been refactored to use the appropriate Java 11 equivalent.

Version 6.3.0 - Released 1/30/2020:

• The plug-in was updated to support RELAP5-3D version 4.4.2 of the analysis code. The model version selectors will now include the 4.4 option. Additionally, the import batch command will now include the following option:
  RELAP IMPORT R53D 4.4 "filename"
• An error message is now provided in R53D 4.4 when usage of Developer Option 29 is detected. In version 4.4, this developer option results in an input error.
• The name and description for developer option 56 was updated. This option now helps prevent velocity spin-ups for problems using the MULTID component.
• The option for the Index controlling activation of modeling of molecular diffusion of gas and solution scheme to be used was updated to now allow selection of value 2 (Implicit numerical solution and superimposition method (Crank-Nicholson) for interfacing diffusion modeling with the RELAP5-3D field equations).
• The list of supported fluid types for hydrodynamic systems was updated to include PB, VERTREL, and H2O95N. Additionally, support was added for the optional weighting factor used with H2ON.
• The kinetics time step control flux extrapolation option can now be set to 2 (linear flux extrapolation).
• The input specification for the Krylov Solution Algorithm Order of Precursor Integration (30000010 Word 1) was determined to be incorrectly stated in the RELAP5-3D User's Manuals.  The correct description for this input (from the RELAP5-3D 4.4.2 User's Manual) is:

  Order of precursor integration. A value of 1 selects first-order (linear) precursor
  integration; this value is recommended if W5 on this card is set to 1.0 (implicit). A value
  of 2 selects second-order (quadratic) precursor integration; this value should only be used
  if W5 on this card is set to 0.5 (Crank-Nicolson). The default value is 1.

  This has been corrected for all code versions. Imported or saved models which have a zero value specified for this input will have the value converted to 1 (Linear).

• An error check was added which reports an error when the mesh plane interior boundary condition flag is not set to either 0 or 3 (Card 30000003 Word 8 Nodal Kinetics Control Information).

Version 6.2.2 - Released 10/24/2019:

• The Multiple Junction export logic was updated to include the packed format string "jefvcahs" in the comment heading for junction control flags.
• The encoded variable names used for preserving numerics in a restart case and for a resource ASCII export have been modified to include a trailing '_' character. This delineator allows for variable references to appear directly adjacent to an input value without corrupting the reference.
• The error check in 1D hydraulic components for ensuring that a manually specified DZ is less than or equal to the cell length has been updated to remove false positives caused by floating point round-off errors.
• The signal type property editing dialog has been updated to open with a smaller default size, and to resolve an issue that could cause the dialog to flicker when opened.
• An issue has been resolved when exporting a model notebook where the numerics section would be excluded if the model had previously been exported with the legacy option to exclude the numerics section.
• Compressor has been modified to correct the engineering units of the maximum forward and reverse velocity fields.
• Turbine has been modified to correct the engineering units for the shaft velocity field.

Version 6.2.0 - Released 9/3/2019:

• The completion dialog for initializing Reactor Kinetics input will now be sized to properly accommodate its UI component configuration.
• An issue has been resolved that would add an error to the screen file when opening the displacement dialog for the first time.
• Heat structures have been updated to support identifying outside radial geometry variable references when showing usages on variables.
• Nodal Kinetics  has been updated to support identifying variable references in the following fields:
• HWR - Neutron Sources
• GEN - Cross Section Data -
• Ramona - Zone Init Pwr Fractions
• Multi-dim and pump components have been updated to support identifying variable references in geometry and noncondensables.
• General tables have been updated to support identifying variable references in tabular data when a table reference has been de-activated.
• The heat weighting table ASCII export logic has been updated to prevent an issue where values would lose characters during export if the value exceeded 11 columns.
• The RELAP File-> Import...-> action in the main toolbar has been changed from RELAP ASCII to just RELAP.
• An issue was resolved which could cause the loop check and notebook export to fail if a multi-junction component had only an inlet or an outlet defined but not the other.
• The RELAP5 3.3 code version has been updated to suppress an error message when the end-time of a time step has been set to a negative value.
• The model error checks for hydraulic components have been updated to consolidate error messages regarding noncondensable gas mass fractions
• An issue was resolved which prevented completed plot files from being loaded as a completed run if no file was selected as the PIB-plot file.
• The Name properties of the Restart Case and Integration Case components have been updated to report an error if another case already has the new name when entering a new name and during Check Model.
• The Table/Function Materials have been updated to correct the engineering units for volumetric heat capacities in the variable conduction table.
• The Multiple flexible wall component has been updated to prevent setting the name to more than 8 characters.
• Inertial valves have been updated to correct the engineering units for the angle velocity.
• The ASCII export logic was updated to include the packed format string (tlpvbfe, or jefvcahs) in the comment headings for volume and junction control flags for hydraulic components.
• The display name for the engineering unit volume pressure has been changed to "Stiffness".
• The display name for the engineering unit Volume HTC4 Temp^5 has been changed to Volume HTC5 Temp^5.
• The RESET flag has been updated to be exported in lower case characters.
• The kinetics component has been updated to modify the volume weighting table when a multi-dimensional component is renodalized.
• The model notebook export routines were updated to write out each component's hydraulic connections sorted by the component number of the component on the "other side" of the connection.
• The model error check behavior has been updated to ensure that the following junction properties will report an error if the value has not been set:
• Forward Loss Coefficient
• Reverse Loss Coefficient
• Discharge Coefficient
• Thermal Constant
• Subcooled Discharge
• Two-Phased Discharge
• Superheated Discharge
• The geometry property editor for 1D hydraulic components has been updated to display an error state when the additional junction properties are invalid.
• The file selector used to select the export locations for ASCII, Restart Cases, and Model Notebooks, has been updated to use more intuitive default name and location.
• The file selector used to select the export location for SNAP Data Exchange files has been updated to use more intuitive default name and location.

Version 6.1.1 - Released 4/27/2019:

• Added support for new plot file variables.
• Corrected plot file variable units and conversion factors.

Version 6.1.0 Internal Release

Version 6.0.4 - Released 10/25/2018:

• Various optimizations were made to the RELAP plug-in's validation display and context sensitive ASCII export routines.
• An issue has been resolved that would cause newly created heat structure cells to have the same cell index when added through the cells / surface BC's editing dialog.
• An issue with radiation enclosure editors has been updated to prevent an error during multiple component selection in the Navigator.
• The general table component has been updated to verify the number of rows in a referenced table variable.
• The multi-dimensional component was updated to change the wording of the error message that appears when 3D Momentum is used and one or more junctions have a non-zero momentum flux flag (s-flag). Additionally this check is now performed when the Dimension Flag property is disabled, defaulting to use 3D Momentum.
• The meta-data comment data for table variable references has been updated to only write the bounding comment cards during a Unix substitution export when the variable name begins with a '$'. This includes restart cases where numerics are preserved, and resource exports.
• The model options sub-system integration logic has been updated to preserve kinetics time step control system cross references.
• The logic that generates the variable header at the top of the file when exporting a restart case has been updated to resolve an issue where the delimiting text between the name and value were lost.
• The restart case export logic was updated to support the Include Unix Subst. Vars. property of RELAP job stream model nodes when determining what to write for embedded tabular variable values.
• The following updates have been made to the external cross reference reports generated during a sub-system integration:
  • Model options print controls, volume list starting cell location has been updated to "Print Control Start Volume"
  • Pressurizer surge line and sprayer hydraulic connections identify themselves as Surge Line or Sprayer in the Location field.
• An issue was resolved that prevented the Target Sub-System references of Integration Case Definitions from being properly reconnected after a sub-system integration.
• The restart case export logic was updated to handle the situation where a restart case includes a table variable reference, and the table variable references other variables inside the table cells.'
• An issue was resolved that prevented some cross-references to control systems from being properly reconnected during a sub-system import.
• The reactor kinetics ASCII export logic for the volume weighting and heat weighting tables have been updated to correct the compression behavior when exporting more than 99 rows. The compression algorithm compresses as densely as possible when more than 99 entries are encountered. If the compression algorithm cannot reduce the number of cards below 100, and error message will be reported during ASCII export.
• The kinetics component has been updated to prevent error messages on the volume or heat weight factor tables from being reported when the underlying table entries are defined using a table variable reference.
• The heat weighting factor table in reactor kinetics now includes a table variable reference block end tag when the heat weighting factor table is defined using a table reference.
• The reactor kinetics has been updated to support references to table variables with more than 99 rows for volume weighting factor tables and heat weighting factor tables. The export logic will build an increment value that allows using the expanded format for extra data sets on a card when the table contains more than 99 rows. When exporting the placeholder text for UNIX substitution variables, only 99 rows will be exported.

Version 6.0.1 - 6.0.3 Internal Releases

Version 6.0.0 - Released 8/18/2018:

• The heat structure boundary condition type editor has been updated to correct the label for a controlled heat flux.
• The control number format flag editor was updated to refresh all of the open dialogs when the value is changed.
• Several issues were resolved in the RELAP plug-in sub-system integration process that prevented the following cross-references from being properly discovered and reconnected:
  • Heat Structure component Gap Volume and Radial Geometry Node Location
  • Interactive Variable component Variable Request Code
  • Model Options component Self Initialization Options
  • Prizer component Surgeline Junction and Spray Junction
  • Model Options component Junction references in Print Controls
  • all Radiation Enclosure cross-references
  • all RN Species component cross-references
• The "Exportable" and "Imported" properties of a sub-system component have been removed. These properties were intended to be used by the sub-system integration system to ensure that only "Exportable" sub-systems could be imported into other models and only "Imported" sub-systems could be directly updated. These restrictions proved to be cumbersome and unintuitive. Any sub-system can now be used in a sub-system integration.
• A sub-system integration command has been added to allow integrations to be performed via the batch command interface. This will make the integration process available to other applications that either load the Model Editor as a library or communicate via batch command. The SUB_SYS_IMPORT command will update the sub-system with given name in either the current model or the model with the given label.
• SUB_SYS_IMPORT <Mn> "[target sub-system name]" "[filename]" "[source sub-system name]"
• Any messages reported during the integration process will be displayed in the Message Window (if one is available) and in the Model Editor’s screen file. These messages include those that would be reported if the integration was performed in the user interface as well as new error messages reported by the SUB_SYS_IMPORT command.
• A new Integration Case component has been added to the SNAP core and enabled for the RELAP and TRACE plug-ins. The Integration Case component represents a pre-defined set of sub-system integrations performed in the specified order. The set of integrations will be performed when the case is graphically edited (much like restart cases) and when the case is exported to a local file.
• The "EXPORT CASE" command has been updated to support sub-system integration using the Integration Case component. This will allow integration cases to be applied and the full model exported to a file in batch mode using the following syntax:
  • RELAP EXPORT CASE <label> "[case name]" "[filename]"
• The RELAP-specific sub-system integration system was updated to eliminate several edge cases that could cause drawn components in the master model to be lost when updating views after an integration.
• Support for the SNAP Validation display has been added to the RELAP plug-in. This display includes the contents of the current model in ASCII format (as shown in the ASCII Viewer) and a toolbar that indicates the current cursor location and a brief description of the input at that location. Clicking on a supported portion of the input will update the cursor location and enable the "Open Editor" toolbar button. Pressing the "Open Editor" button will open the graphical editor corresponding to the current cursor location.
• Note that the ASCII Viewer displayed by the "Show ASCII" feature also includes the Validation Display selection and "Open Editor" features.
• The ASCII import logic has been updated to preserve table variable references for general tables, heat structure source data and kinetics weighting tables. These references will be preserved for Unix Substitution, restart cases while preserving numerics and resource exports.
• Reactor kinetics has been updated to support using a table variable to define the contents of the heat weighting factor table.

Version 5.0.1 - Released 2/28/2018:

• The RST-Plot Control and Action property in Model Options has been updated to include the MBINARY option for RELAP 5D v 4.0 or greater.
• The fluid types supported by hydraulic systems have been updated to include the DOWA and R134A types.
• The Single flexible wall component has been updated to rename the General Table property to “Wall Stiffness Table”.
• The following RELAP5-3D heat signal variables were added: HTMWPOW, HTMWRQ.
• An issue has been resolved which caused summer control blocks connected to resupplied control blocks in a restart case to lose their scale factors.
• An issue has been resolved that was creating multiple undo steps when modifying Hydraulic Diameter and Wall Roughness for a Time Dependent Volume.
• An issue has been resolved that would cause an error when plotting or animating RELAP variables that are not explicitly recognized by SNAP.
• The RELAP5-3D PIB plot file format reading logic used in the SNAP MATLAB library and RELAP5 plug-in animation has been updated to significantly improve the performance of large files.
• The Multiple junction model notebook export has been updated prevent the two geometry tables from merging together in DOCX format.
• The ASCII import of Unix substitution variables was updated to resolve an issue which caused the calculated parameter for cell geometry (area, length, or volume) to be incorrectly set to the field defined by a variable after import.
• The ASCII import of a Relief valve with Unix substitution variables has been updated to set the activation state of the Bellows Pressure property correctly when it is defined using a Unix Substitution variable.
• The ASCII export logic with Unix substitution support has been updated to include the hydraulic diameter card (e.g. CCC0110) when the hydraulic diameter is defined using a Unix Substitution variable, even if the value of that variable is set to 0.0.
• The ASCII export logic with Unix substitution support has been updated to include the junction flow area cards when the area is defined using a Unix Substitution variable even if that variable has a value of 0.0.
• The Reactor Kinetics component has been updated to disable the "Reactor Time" property when the Power History Table has any rows.
• The Model Notebook export logic for the Valve component was updated to include the Face Placement table.
• The reactor kinetics model notebook export was updated to ensure that the sets of detector data are distinct from one another.
• An issue has been resolved with pipe, pressurizer, and annulus, which caused the option that indicates whether the area, length, or volume calculation flag should be specified by cell to be lost when saved. 
• The dialog for selecting components to include in a restart has been updated to include filters for limiting the displayed components and to allow sorting the displayed components by type, number or name.
• The Separator 2D VOVER/VUNDER table shading in the model notebook has been corrected to be consistent with other tables.
• The RELAP5 plug-in was updated to ensure that modifying the following properties updates the ownership value and clears the reviewer value:

  Numerics Variables: Name
  Model Options: Code Version, Developmental Options, Minor Edit Requests, Expanded Plots, Validation Options, and Extra Deck Data.

Version 4.8.1 - Released 10/4/2017:

• The model options table in the model notebook export has been updated to write the text "Default Values" for the Print Controls when all the diagnostics are active, and no volume or junction controls are defined.
• The model notebook export for the time dependent junction has been modified use “Time Dependent Data” as the section heading for its tabular data.
• The model notebook export for time dependent volumes was updated to resolve an issue that prevented the Argon mass fraction from appearing in the table of noncondensable mass fractions.
• The RELAP5 plot file parsing logic was updated to include new engineering units.
• The following signal variables were added to RELAP5 3D Version 4.1 and 4.3: SYSTMBS, SYSTMBC, SYSTMFS, SYSTMFC, SYSTMGS, SYSTMGC, SYSTMNC, SYSTMNS, HTMWPOW, HTMWRQ, TFRONT, VFRONT
• The error message indicating that a signal variable is not supported by the current version was updated to display the correct version number.
• Heat structures have been modified to disable the inside cladding oxide thickness value for metal water reactions when the geometry is not set to rectangular. This only affects RELAP53D version 4.3 models.
• The restart case logic was updated to exclude referenced variables from disabled properties from the list of replaced variables at the top of the ASCII restart case.
• The model notebook ASCII export logic was updated to write h2o for the fluid type of the default hydraulic system.
• The ASCII export and model notebook export logic for the print controls property of model options has been updated to export the diagnostics card when any volume or junction controls are present.
• The model notebook export for the time dependent junction has been modified match the section heading format used for initial conditions of other hydraulic components.
• The pump component reverse indicator property has been modified to support referencing an integer variable.
• The restart case graphical editing logic was updated to resolve embedded variable references in the case ASCII with the preserve numerics case set to False. The variable references will be resolved when opening the case for graphical editing but when saving the case, references will be replaced with the current values.
• The Ramona feedback nodal kinetics has been updated to resolve an issue where the Delayed Fiss Spec. editor would identify UNIX substitution variable references as invalid, unless their values summed to 1.0.
• The nodal kinetics mesh lengths editing dialog has been updated to support variable references.
• The RBMK feedback nodal kinetics has been updated to support variable references for the user variable values.
• The preserve numerics logic for restart cases was updated to handle embedded variable references in the external function control block data.

Version 4.7.9 - Released 8/8/2017:

• The valve Table Factors property has been updated to be enabled while graphically editing a restart case.
• The Reactor Kinetics component has been updated to add the DELETE record to a restart case when the Clear right-click menu item is selected.
• An issue has been resolved that would cause errors after undoing the creation of a Reactor Kinetics. This issue also prevented initializing a new reactor kinetics object while graphically editing a restart case.
• The Select Components for Restart dialog has been updated to include the Reactor Kinetics component.
• The Restart Time Option property of Model Options has been updated to include pop-up help text.
• The CCFL model has been updated to flag any hydraulic component that references a CCFL as modified when the CCFL model is updated during a graphical restart edit.
• The model options extra deck data editor was updated to flag the model options as modified when the text in the dialog changes.

Version 4.7.8 - Released 6/16/2017:

• An issue was resolved which would prevent editing noncondensible gas fractions if one of the first five gasses was not in the list of enabled gases.
• An issue was resolved in several editors that could prevent a component from being flagged as a restart change when using the editor to graphically edit a restart case.
• An issue was resolved where Branch components were able to be connected to themselves through the External Junctions editor. With this update, a branch component will no longer be included in the list of its connection target components.
• An issue was resolved where setting mass flows in the hydraulic component initial conditions dialogs was not undoable. The mass flows and velocities radio buttons now both provide the ability to undo and redo the selection.
• The graphical restart editing logic was updated to flag new control system components, CCFL models, RN Species, and Radiation Enclosures for inclusion in the restart case.

Version 4.7.7 - Released 5/25/2017:

• An issue was corrected which prevented plot data from being interpolated when recording an animation from a RELAP5-3D plot file.

Version 4.7.6 - Released 5/15/2017:

• An issue was corrected in the input processing for the Self-Initialization Pump Steam-Flow and Feedwater Controllers (Cards 141-146). For each of these controllers, the component numbers and controller identification numbers had been reversed when parsing and writting the input file.

Version 4.7.5 - Released 4/6/2017:

• The model notebook export of table variables was updated to resolve an issue where the model options are identified as referencing tables that exclude their tabular data during export
• The ASCII export logic has been updated to prevent reporting an error when a comment line exceeds 80 characters.

Version 4.7.4 - Released 2/23/2017:

• General tables have been modified to allow the use of specific columns of a referenced table variable rather than requiring that the entire table variable be used.
• Time dependent junctions have been updated to support up to 5000 sets of data in the junction state table. Continuation cards will be interleaved between numbered cards to fill out the defined data sets. An error message is reported when a time dependent junction has more than 5000 rows.
• The reactor kinetics component has been updated to allow editing all compositions cross-section data and control rod groups while graphically editing a restart case.
• The Single flexible wall component has been updated to allow editing the flow area and wall table reference while graphically editing a restart case.
• The model options component has been updated to allow editing the Evaluation Model properties while graphically editing a restart case.
• The save/load routines for the Model Options were updated to resolve an issue that would prevent loading validation test options from a model.
• The ASCII import routines for 1D hydraulic component friction data has been updated to resolve an issue which would prevent importing dollar-variable references for forward and reverse losses.
• The Separator component was updated to support using variable references inside the 2D V-Over, V-Under table.
• A Variable Request Code editor was added to the Interactive Variable component that allows its conversion factor to be set to the conversion factor appropriate for the selected minor edit variable.
• An issue was resolved that caused references to Reactor Kinetics Zones, Detectors, and Control Rod Groups from signal variables and heat structure cells to be lost when those components were included in a Sub-System Integration.
• The Pump head and torque curve editing dialogs were updated to fix a typo in the regime selection drop-down list.
• The Time-dependent volume component was updated to remove a false error message that would appear when a time-dependent volume component is set to type control and has no table rows.
• The multiple junction component has been updated to prevent a multiple junction component from having more than 99 junctions. An error will be reported in the case where a multiple junction component already exists with more than 99 junctions.
• The model notebook export logic has been modified to exclude the total fluid length and overall elevation change portions of the Hydraulic Statistics summary.
• The model notebook export logic for RELAP53D has been updated to allow the user to exclude the tabular data from selected table variables from being included in the model notebook.
• An issue was resolved which could cause the Reactor Kinetics volume weighting table write logic to exceed 80 characters.
• The component ASCII export routines have been modified to appropriately handle default card values when used in conjunction with Unix substitution variables. This update ensures that, in the cases where a dollar variable is applied to a card attribute, the dollar variable is alwayswritten. This logic does not take into account the value of the dollar variable when writing the word. Regular numerics will still have their value inspected before determining if a card value should be written.
• A series of updates were made to ensure attribute reviewer and model dirty status values are now appropriate when setting values on many of the model components. The list of affected components includes:
• Restart Cases
• Drawn User Numerics
• Python Function Source Code Changes
• Heatstructure Editors
• Nodal Kinetics Editors
• Model Options Editors
• Other Hydraulic Editor
• An issue was resolved where adding a new heat cell to a heatstructure component could result in a duplicated primary key for the cell. This could cause RN Enclosure references to improperly refer to the heat cell which was used as the basis for the newly added heat cell.
• An issue was resolved where the Nodal Kinetics Zone Region Feedback data would report unknown values even if all data was entered. In addition, the error report logic for zone region feedback data was updated to be more descriptive.
• The user defined material model validation logic has been updated to prevent false positive error messages for Heat Capacity entries past the end of the table size. This would occur only if table rows are removed while the Heat Capacity column is disabled, and the Heat Capacity column is then enabled.
• Junction signal variables have been modified to prevent an error where removing the junctions from a multiple junction component could introduce an error that prevents saving the current model.
• The validation logic for junction signal variables has been updated to report an error when a junction signal variable references a multiple junction edge number that is greater than the number of junctions.
• Model options has been updated to include the reset time option while graphically editing a restart case.
• An issue was resolved that could prevent the Logical Trip "Invert" flag from being properly retained for cross-references to Logical Trips during Sub-System integration.
• The Hydraulic Systems editor was modified to include support for selecting either a corner or a face on the selected reference volume. This data is only available to moving type problems. Additionally, the reference elevation property is now disabled for moving problems.
• The heat structure Axial Power / Heating property has been updated to allow referencing a table variable to define the table values. This update allows for mapping individual table variable columns to match the required axial power heating table entries. Model validation errors will be reported if the table variable does not have the correct number of rows or the column mapping is invalid.
• The pipe, annulus, and prizer components now allow defining the geometry calculation mode on a per cell basis. This option is enabled by selecting "By Cell' in the calculate options provided in the geometry dialog for these components. When the "By Cell" option is selected, a Calculate column is added which provides the option of defining the calculate option for each individual cell in the component.
• The reactor kinetics volume weighting table property has been updated to allow referencing a numeric table to define the table values. This update allows for mapping individual table variable columns to match the required volume weighting table entries. Model validation errors will be reported if the table variable column mapping is invalid.

Version 4.7.2 - Released 12/2/2016:

• An issue was resolved writing the Heatstructure Boundary condition for wall heat flux as a function of time from control variable (-2XXXX). The format of the value expects a 4 word component number for the control variable while plug-in was only generating a three word component number.

Version 4.7.1 - Released 8/12/2016:

• An issue has been resolved which allowed components to be included in sub-systems multiple times by using the right-click popup menu in a view. Subsystems that contain duplicate entries will automatically be updated to remove the duplicates when opening the model.
• The KINS reflood/grid model has been renamed to KNF reflood/grid model. This change only effects models when the code type is set to RELAP5 (MOD3).

Version 4.7.0 - Released 4/11/2016:

• Support has been provided for RELAP53D version 4.3. The version is now selectable through the import dialog and from the version selection editor in Model Options. This update includes the following modifications:
  • Added support for Molecular Diffusion Modeling input. This data is available for editing in the Model Options component.
  • Support has been provided for general table (htc-temp) temperature dependent conductivity control of conductance enclosures.
  • The Reactor Kinetics component was updated to include support for the additional composition neutron velocity cross section data.
  • Support has been added for the new maximum step size/ratio values for the Kinetics Timestep Control cards.
  • The plug-in was updated to include support for the new Face-Dependent Albedo Input Option. These cards assign face-dependent albedos to nodes in the kinetics model for 3D kinetics models.
  • Support has been added for the new 2D Conduction/Reflood length Heatstructure input.
• The initial condition retrieval logic has been updated to allow RELAP5 3D models to retrieve initial condition values for interactive variables.
• An issue was resolved in the heat structure model check which is used to identify situations where a 3D kinetics source reference is selected, but the 5 word format is not.
• The functional fit tables for custom materials have been updated to use the temperature offset engineering unit for the constant temperature offset value to the temperature offset table column.
• The Plug-in has been updated to support the creation of Model Notebooks in Microsoft Word DOCX format. The Export Notebook dialog now includes a document format drop-down list that includes the options Open Document Format and Microsoft Word document. The Open Document Format option results in a Model Notebook as an Open Document Format file, and the Microsoft Word document option results in a Model Notebook as a Microsoft Word file.
• The batch command RELAP EXPORT NOTEBOOK has been removed and replaced by the batch commands RELAP EXPORT NOTEBOOK_ODT and RELAP EXPORT NOTEBOOK_DOCX. These two commands have the following parameters: RELAP EXPORT [file type] <Mn> [filename] where [file type] is NOTEBOOK_ODT or NOTEBOOK_DOCX, <Mn> is the model number, and [filename] is the full path to the file in quotes.
• The batch commands BEGIN_RESTART and END_RESTART have been removed. These are legacy functions which have since been replaced by the restart case commands.

Version 4.6.3 - Released 12/18/2015:

• The numerics variable usage logic was updated to locate numerics used in variable trip additive constant, or interactive variable initial value fields.

Version 4.6.2 - Released 9/30/2015:

• The expanded plots control system selection dialog was updated to remove deprecated methods. The behavior for the dialog remains the same. The following model notebook tables now include appropriate unit labels in their header section:
  • Heat Structure - Left/Right Boundary Condition Table Area Factor
  • Model Options Displacement Data Initial and Final Velocity parameters
  • Reactor Kinetics Power History table Reactor Power and Volume/Heat Weighting tables
• An issue was resolved where the Multi-Junction data tables were duplicated in the model notebook.
• The model notebook was modified to include the Third Angle in the Cell Orientation data table only when it is enabled. The Reactor Kinetics Heat Weighting attribute label was corrected to be "Heat Structures".
• An issue was resolved where the Nodal Kinetics Initial Power Distribution attribute had an unknown reference source included in the model notebook.
• An issue was resolved where the model notebook incorrectly displayed scattering cross section types 6 and 7 for models with only two delayed neutron groups defined.
• The notebook export logic for Time Dependent Junctions and Volumes will no longer output table data when a control block is being used in the Data Option. Additionally, Time Dependent Junctions will now include the appropriate control blocks for the mass flows.
• The loop check algorithm has been updated to correct the calculation of elevation change when inclination angle and explicit dz values are entered for compressors, feedwater heaters, and turbines.
• The multi-junction model notebook export logic will now ensure additional junction data is provided if any of the junctions specify the data. Previously, if the last junction did not use a choke flow flag of 0 or 2, no additional junction data would have been written to the notebook.
• An issue was resolved where a broken reference link was added to the model notebook if no time step sets were defined.

Version 4.6.1 - Released 8/26/2015:

• Several optimizations were applied to the RELAP plug-in to reduce the amount of memory temporarily allocated during the import and export of ASCII input models.
• The model notebook export logic was updated to include a table for the uncertainty parameters when the model includes one or more uncertainty parameters.
• A typo was corrected in the Reactor Kinetics model notebook where the Initial Promethium Concentration was incorrectly labeled "Initial Prometheum Concentration".
• The 3D display panel used by the Multi-Dim component "Geometry" property editor was updated to enable the 3D panel based on the ModelEditor "General" preference "Use 3D Displays". This preference will allow the Multi-Dim geometry editing dialog to be opened on computers without 3D support.

Version 4.6.0 - Released 8/12/2015: Please note: These items are still under development.

• Several minor issues were resolved that prevented compiling with Java version 7. Java 7 or newer is now required to run SNAP
• Several typos have been found which have been corrected as well previously inconsistent uses of words and phrases with multiple correct spellings.
• Functionality has been added to ensure that property editors which edit component connection data properly update ownership information. This includes the Inlet and Outlet property editors of Compressors, Single Junctions, Single Flexible Walls, Time Dependent Junctions, and the input connections editor for control blocks and trips.
• The model notebook export dialog no longer includes an option to set the headers to the current section titles. This optional configuration was confusing and unnecessary and has been removed from the export format and the dialog. Section titles will no longer be written to the document header.
• An option was added to the notebook export dialog which allows notebook ASCII sections to include dollar variable names or values. Additionally, all non-dollar variable numerics will now be included by value in the component ASCII sections of the model notebook.
• The model notebook export logic was updated to now include the -1 All type expanded plot requests.
• The Plant Motion displacement attributes initial and final velocities are now exported to the model notebook as Initial Velocity and Final Velocity. Previously, these values were sometimes incorrectly included as Initial Angle and Final Angle.
• The reactor kinetics model notebook export logic was updated to resolve an issue which caused kinetics components using the  ANS 79-3 and 94-4 fission product models to export power history tables with unknown values.
• The reactor kinetics model notebook export logic was updated so that the control rod group active length and insertion direction attributes include the name of the numerics set on those properties in addition to their values.
• The notebook export logic handling the export of the neutron source now includes the row, column, and planar Index locations.
• Issues were resolved in the notebook export of Nodal Kinetics Active Fission Yield and Zone Region Feedback values. The Active Fission Yields enabling logic will now ensure that the number of Delayed Fission Spec entries is the same as the number of Delayed Neutron groups. Additionally, the notebook export logic for nodal feedback types which allow multiple feedback regions was corrected and will no longer cause the notebook export to fail.
• An issue has been resolved in the model notebook export for Turbine components that caused the following values to be included as "-unsupported value-": Form Loss Multiplier, Inlet Junction, and Efficiency Multiplier.
• The model notebook logic for the Reactor Kinetics component was updated to include cross section and user figure data.
• The model notebook export for the hydraulic component "Cell Friction Option" table was updated to ensure that the table is included in the notebook even when set to the initial default values. This change affects all hydraulic components except for pumps and separators.
• The model notebook export for Accumulator components previously included Junction Initial Conditions. This has been corrected as there are no such properties for this component.
• The model notebook export for Compressor components previously included Wall Friction tables. This has been corrected as there are no such properties for this component.
• A model notebook export issue was resolved that caused "Total Length" values to be exported for the Y and Z axes of hydraulic components when "Y Crossflow" or "Z Crossflow" options are activated. Total length values are no longer exported for the Y and Z axes.
• The model notebook export for single flexible wall components was updated to remove the following sections that do not apply to single flexible walls: Geometry, Initial Conditions, and Friction Data
• The "Include User-Defined Numerics" option was removed from the Export Model Notebook dialog and now all User-Defined Numerics are always included in the Model Notebook.
• An issue was resolved in separator model notebook export logic which prevented 1D VOver/VUnder data from being exported correctly. A link is now provided in the separator properties table to the 1D VUnder/VOver Fraction Limit Table data.
• An issue was resolved which prevented the Additional Junction Options table from being included in the model notebook export for Annulus and Prizer components.
• An issue was resolved in which a Heat Structure's Hydraulic Face property printed the option "[1] Z Axis" as "[1] Y Axis" and "[2] Y Axis" as "[2] Z Axis" to the Model Notebook.
• The model notebook 2D separator volume fraction table data has been updated to provide a better visual layout. Unnecessary spacing has been removed and better aligned column headers have been added.
• An issue was resolved in which a Heat Structure's Temperature Source property was not printed to the Model Notebook when exported.
• An issue was resolved which caused an incorrect number of radial cells to be listed as the value of the "Initial Temp." property in the model notebook export for heat structures with an "Initial Temperature Option" set to "[-1] Individual Values". The incorrectly reported number was one higher than the actual number of radial cells.
• An issue was resolved in the model notebook export for Time Dependent Junction components that caused the contents of the "Junction Face Placement" table (First From, First To, etc.) to also appear in the component summary table.
• The model notebook hydraulic table junction labeling will now be based off the name provided in the main hydraulic property editors. This means that when an editor has a label to describe a junction number, that label will be inserted into the notebook for that specific data (eg. Pump junction 1 in the notebook is now listed as "1 (inlet)", and junction 2 is listed as "2 (outlet)".
• An issue was resolved in which the "Third Angle" property was not printed on Model Notebook export when the following components had the Angles Option property set to "Pitch-Yaw-Roll" or "Euler": Annulus, Pressurizer, and Pipe.
• An issue was resolved in which the plot for Axial Temperatures was not printed to the Model Notebook when there was only one axial level defined or all the data in the table was the same. The plot is now printed for these cases.
  The Axial Temperature plot has been changed to use radial distance as the independent variable to give the appearance of a temperature gradient across the axial level. Up to 20 axial levels will be printed to this plot.
• An issue was resolved in which the rotational matrix table for the following components was incorrectly labeled using junction numbers instead of X, Y, and Z: Separator, Jetmixer, Turbine, Feedwater Heater, and ECC Mixer.
• The control system components in the model notebook will now include a reference to model notes attached to their name, component number, and descriptions.
• An issue has been resolved in which the property view for Press/Void Head and torque tables were not enabling for pump components. These properties should now enable when a Pump is using "2-Phase Multi" options and when 2-Phase Head or Torque index is set to "Void Fract./Press Mult."
• Support was added for the following heatstructure properties in the model notebook:
  • User Defined Numerics applied to the Surface Area
  • Sphere Fraction
  • Gap Conductance Source Data
  • Surface Resistance and Heat Transfer
• The following Model notebook references were corrected:
  • Control System Model Notes in a Subsystem
  • Time Dependent Volume variable request property referencing a Signal Variable
  • Pump Control property referencing a Signal Variable
• The RELAP53D job step was updated to now properly handle staging of inputs for the restart and plot files used as input. These files are modified by the RELAP53D executable and must be staged before execution begins. When staging is requested, the files will be copied to a file with the name <filename>_in.<extension>.
• The model notebook export logic for the multi-dim component has been updated to resolve an issue where incorrect values were exported for the junction initial conditions tables.
• A notebook export issue was corrected where unit labels would be included in the body cells of a table. These unit labels are no longer included in the body cells but instead included in the header cells (where appropriate).

Version 4.5.7 - Released 5/6/2015:

• An issue has been resolved which would prevent the import of a constant conductivity value defined by a variable reference when importing from ASCII and preserving UNIX substitution variables.
• Support has been added for the uncertainty parameters in Model Options of the NRC version of RELAP5. These parameters allow the user to modify certain underlying model parameters either through multiplication, addition or replacement. These values may be selected directly as variables in Uncertainty job streams.
• Support has been added for the grid model, and grid components in the NRC version of RELAP. These values are available in the Grid node in the Navigator.
• The developmental options allowed by the NRC version of RELAP5 have been updated to match the values supported by RELAP5 version 3.3 KC.
• The model notebook export logic has been modified to resolve an issue which would prevent the model notebook from being exported when a variable referenced by the minor edits data has been deleted.
• The model options ASCII export logic has been updated to prevent card numbers from being skipped in the Minor Edit request data when a variable referenced by the minor edits data has been deleted.
• An issue was resolved which disabled the wall friction flag of the accumulator component.
• The ASCII export logic for the model options component was updated to only write the default value for the plot action on card 103 when the plot action is disabled and the restart file name is specified.
• The ASCII export logic for restart cases was updated to only include the radiation enclosure count card (60000000) when at least one radiation enclosure is modified by the restart, and the value included on the card will be the number of radiation enclosure records included in the current export.

Version 4.5.6 - Released 3/30/2015:

• The "Material Properties" option has been added to RELAP5 and RELAP53D application definitions in Configuration Tool. This option allows the user select a set of material properties files that will be provided to each RELAP5/RELAP53D execution. These files will be copied into the task working directory prior to execution.
  
• An issue was resolved that caused the heat structure property "Reflood Trip" to be written to the electronic model notebook as "-unsupported value-". The trip is now written with a link to the trip's section in the notebook. A misspelling in the property name was also corrected.
  
• Several issues were resolved in the Model Notebook export logic for the Compressor component:
  
  • The value of the "Outlet" property was written as "-unsupported value-" regardless of its value.
    
  • The "Rotational Vel. Variable" property was written as an invalid hyper-link when a signal variable was
    selected.
    
  • The "Time Rotation Data" property value hyper-link referenced an incorrect section.
    
  • The "Relative Velocity Data" table was not included in the notebook under its heading.
    
• An issue was resolved in the notebook export for the Multi-Dim component that caused the cylindrical geometry labels to be used for cartesian components for the following tables: Junction Geometry Data, Friction Junction Data, and Initial Conditions Junction Data.
  
• The model notebook export logic for heat structures has been updated to write out default values in the axial power / heating table for cells where the source has been disabled.
  
• The additional plot variables editing dialog has been modified to allow four flexible wall variables to be selected as global plot values: fwvol -1, fwdvol -1, fwdx -1, fwstif -1.
  
• The heat structure component has been updated to initialize the left boundary property from the completion dialog when the geometry is set to flat slab / rectangular.
  
• The reactor kinetics component has been updated to allow the fission power fractions to be specified in the power history table when the decay type has been set to ANS 05-4.
  
• The Time Dependent Volume initial conditions dialog has been modified to allow a numeric variable reference to be used for the noncondensable mass fractions, and to prevent mass fractions from being specified when there are no rows defined in the fluid state table.
  
• The Time Dependent Volume component has been modified to remove the unused Noncondensable Gas Species attribute group.
  
• The spelling of noncondensable has been made consistent throughout the RELAP plug-in. The following locations have been modified:
  
  • The error message reported when failing to parse a noncondensable name during ASCII import.
    
  • The noncondensable tab in the initial conditions dialog for hydraulic components.
    
  • The check-box for overriding the noncondensable mass fractions in a time dependent volume.
    
  • The noncondensable drop-down list entry in the initial conditions of a multi-dimensional component.
    
  • The description of developmental option 3 for RELAP5 3D models.
    
  • The title of the noncondensable mass fractions table for hydraulic components in a model notebook export.
    
  • The description of the edge signal variables FLENTHA, and AFLOWGJ.
    
• The ASCII import logic has been updated to improve the import behavior when an unrecognized noncondensable gas name appears in an input file.
  
• The Model Notebook export for the multi-dim component has been updated to prevent exporting a noncondensable mass fraction section.
• The heat structure component has been modified to enable the axial power / heating property editor when any cell in the heat structure has a non-zero source value.
  
• The graphical restart editing logic has been updated to ensure that components deleted in a restart case are removed from the views when the restart case is opened. Additionally, when a deleted control block or discarded variable trip are encountered when opening a restart case, any input signal variable that is not used elsewhere in the model will also be removed.
  
• The ASCII export logic for Model Options was updated to write the Plot Control value to card 103 when generating a restart case.
  
• The Plot Control property of Model Options has been updated to support the binary, and ASCII options for RELAP5-3D versions 4.0, and 4.1.
  
• The Compressor component has been modified to allow editing the performance data, and rotational velocity values in the relative velocity data dialog while graphically editing a restart case.
  
• The heat structure component has been modified to allow editing the source data values while graphically editing a restart case.
  
• The Model Options has been updated to allow specifying the Volume List and Junction List inside print controls
  while graphically editing a restart case.
  
• An issue has been resolved which caused existing magneto-hydrodynamic data to appear in the extra-deck data of Model Options when graphically editing a restart case.
  
• The logic for graphically editing a restart case was updated to resolve an issue where the radiation enclosure count card would appear in the model options extra deck data field.
  
• The heat structure axial renodalization logic has been modified to include the source multiplier value during split / merge operations, and to resolve an issue which would prevent signal variables from reconnecting to the correct axial position in the heat structure.
  
• An ASCII import issue was resolved which would prevent model description data from being read when the model also contains developmental options.
  
• The reactor kinetics model notebook export logic was updated to resolve an issue which would cause an error when exporting a model that contains a nodal-kinetics component that uses rotational angles.
  
• The multiple junction component was modified to resolve an issue which would prevent the discharge coefficient and thermal Non-equilibrium values from being imported when graphically editing a restart case.
  
• The axial cells / boundary conditions editing dialog for heat structures has been updated to improve the appearance of the properties in the dialog.
  
• The ASCII restart import logic used to graphically edit a restart case was updated to resolve an error where branch junction data would be lost if a connected component with a higher component number than the branch is also resupplied.
  
• The accumulator component has been modified to prevent the junction momentum flux from being set to value to 2 or 3. When importing or opening an existing model where this value has been set to 2 or 3, the flux will be converted automatically to 0.
  
• The junction property editing table for turbine component has been modified to remove the momentum flux column.
  
• The MultiDim component has been modified to include an error message when the dimension flag is active and set to 3D momentum and any junction contains a momentum flux value greater than 0.
  
• The accumulator component has been modified to force the volume control flags to be set to 0.
  
• The model notebook export has been updated to prevent the ORNL ANS Interphase Friction data from being exported for accumulators.
  
• The Multiple flexible wall component was updated to include an option which prevents the wall segment data from being compressed during ASCII output. Each wall segment will have an explicit record in the ASCII output. The compress on export option will be initialized during import to match the behavior in the source ASCII.
• The editing dialog for the Table Data property of the general table component has been updated to provide a more intuitive user interface:
  • The copy/paste behavior has been updated to behave like a spreadsheet.
    
  • The table was updated to remove the automatic sort behavior. A sort button has been added which is only enabled if the independent variable values are out of order. Pressing the sort button will reorder the table rows so the independent variable values are in ascending order. Independent variable values that are less than a preceding value will be displayed in red font.
  • The property editor for the Table Data property of the general table component has been modified to indicate to the user when the independent variable values are not in ascending order.
  • The general table component validation logic has been modified to report an error message when the independent variable values are not in ascending order.
    
• The area and wall table properties of the single flexible wall component have been updated to support attribute level documentation links.
  
• An issue was resolved that prevented the CCFL Models chapter heading from being included in the model notebook export. This caused CCFL model components to be included in the Control Systems chapter.

Version 4.5.5 - Released 11/10/2014:

• An issue was resolved which prevented the RELAP5 Mod 3.3 job step from detecting the proper hydraulic system fluid types during submission. The logic in the execution wrapper which parsed the input file to detect the fluid types has been modified to support the optional non-condensible gas flag on the hydraulic system cards.
• The plug-in was updated to include additional signal variables introduced in the RELAP5 Mod 3.3jy specification.

Version 4.5.4 - Released 9/4/2014:

• An issue was resolved that prevented the ModelEditor's "Reference Docs" menu items from correctly opening referenced documents for plug-ins that support references to multiple versions of their user's manual (such as RELAP5).
• An issue was resolved that prevented the RELAP5 plug-in preference "Document Files" from being properly restored when re-opening the ModelEditor. This preference is used to specify the location of RELAP5 and RELAP5-3D users guides that will be opened by the ModelEditor's "Reference Docs" menu items. In addition, manuals can now be selected for RELAP5-3D analysis code versions 2.2, 2.3, 2.4, 2.6, 4.0, and 4.1.
• An issue has been resolved which would prevent editing Pump description properites for card set CCC0302-4 while graphically editing a restart case.
• The an issue has been resolved with the geometry editing dialog for multi-dim components in RELAP which would prevent the connections tab from having any UI elements.
• The model notebook export logic was updated to include a control systems heading only when the subsystem that is being exported, or the whole model contains at least one control system element.
• An issue was resolved which prevented the model notebook from including the table of input signals for control blocks.
• An issue has been resolved which would prevent exporting a model notebook when the model contains a model note that is attached to model options and any other component in the model.
• The default initial height of the Geometry, Friction Data, and Initial Conditions, editing dialogs has been increased slightly.
• The default initial size of the MULTI-DIM Geometry, Node Geometry, Initial Conditions, and Friction, dialogs was increased slightly. These dialogs were also updated to restore their previous size and location when re-opened.
• The RELAP5 Sub-System Integrator was updated to support the import of control block input scale factors and logical trip input Invert flags from the sub-system model when the inputs of the control block or trip are connected to control systems outside of the imported sub-system. Note that these values are imported based only on the input number. If there are fewer inputs in the sub-system model than the master model then the available values will be imported and the values for the remaining inputs will be set to their initial default (scale factor: 1.0, invert: false).
• An issue was resolved that could prevent views created for control systems from including connections to the first control block in the system.
• An issue has been resolved that would prevent the the displays inside 2D views for real numeric variables from updated when the Input Units property of Model Options is changed.
• An issue has been resolved which would cause an error message to be reported to the screen file when selecting multiple multi-dim components.
• The multi-dim renodalization logic has been updated to resolve an error where a model could become unstable after performing a renodalization along the Y axis of a multi-dim component where the component had less azimuthal sectors than axial levels.
• The graphical restart editing logic was updated to resolve an issue where delete cards for hydraulic components were deleting the incorrect component if the target component number had two digits or less.
• An issue was resolved that prevented the 2D View "Renumber Components" feature from properly refreshing the selected RELAP5 components.
• The model notebook logic for the separator component was updated to prevent geometry properties from being exported twice.
• The check valve model notebook logic has been modified to resolve an issue which prevented the initial position from being exported correctly.
• The control block model notebook export logic has been modified to resolve an error which would prevent a model notebook from being exported if the model contains an external function type control block.
• The pipe component cell friction data model notebook export table has been updated. The text written for thermal tracking, mixture tracking, water packing, vertical sratification and compute friction has been modified to include a combination of the words "On" or "Off", and the corresponding integer value. For Thermal Front Tracking and Mixture Level Tracking "On" is associated with the integer value "1", and "Off" is associated with the integer value "0". For Water Pakcing, Vertical Stratification and Wall Friction "On" is associated with the integer value "0", and "Off" is associated with the integer value "1". The Non-Equilibrium option value is written out with just the integer value.
• Control block components have been modified to resolve an issue where an error is reported when attempting to connect a control block output to its input for feedback.
• The NRC Relap5 control block type for digital timers has been removed from the control type selection dialog when a model flavor is not set to NRC RELAP5.
• An issue has been resolved which would prevent modifying user defined materials during a restart import.
• An issue has been resolved which would cause graphically editing a restart case which includes resupplied heat structures or reactor kinetics with file segmenet data to introduce duplicated file segments into the model. Additionally modifying a file segment while graphically editing a restart case will cause the associated heat structure or kinetics data to be included in the restart case.
• The trip components were updated to properly support the reset keyword for restart editing. When the reset flag is set TRUE on a trip during graphical restart editing, all the other properties of the trip are disabled, and the ASCII export of that trip correctly displays the text "reset".
• The restart case export logic was updated to open a confirmation dialog when overwriting an existing file.
• The graphical editing of restart cases has been modified to prevent deleting the following component types: CCFL models, Radiation Enclosures, and Materials.
• The TH Passthrough component has been removed. A warning message will be displayed when opening a model that contains a Passthrough component.
• The orientation tab of the geometry editing dialog has been modified to prevent opening the variable selection dialog from the editing table.
• The editing fields for the time dependent volume properties for wall roughness and hydraulic diameter have been modified to allow selecting numeric variables.
• The initial axial power editing dialog for nodal kinetics was updated to resolve an issue where opening the editing dialog would break numeric variable references.
• The mesh lengths property editing dialog has been updated to prevent opening the variable selection dialog from the editing table.
• The initial value editor for interactive variables has been updated to use the default variable selection dialog, and to allow selecting variables whose units are equivalent to the current interactive variable units.
• The additive constant editor for Variable trips has been updated to use the default variable selection dialog, and to allow selecting variables whose units are equivalent to the current variable trip units.
• The file selection dialog that opens when importing or exporting a RELAP model has been updated to ensure that the (.i) file filter is selected by default.
• The file selection dialog that opens when exporting the report from a 1D hydraulic component renodalization has been updated to ensure that the (.html) file filter is selected by default.
• An issue was resolved that prevented the Navigator ordering of sub-system components from being preserved when saving and loading the model.
• The RELAP plugin has been modified to allow most model properties to be modified during a graphical edit of a restart case.
• The graphical restart editing logic has been updated to improve support for defining non-condensible gas fractions in resupplied hydraulic components.
• The restart input file control card was updated to allow the initial restart location to be specified by time. Additionally the field for specifying the restart plot file name during restart, or new calculations has been modified to increase the allowed length to 80 characters.
• The RELAP model node for job streams has been updated to report a warning message when the underlying model uses the 104 card to specify the output restart plot file name. This behavior is inconsistent with using RELAP in job streams.
• The reactor kinetics component was modified to update the engineering units for the independent variables of the feedback table for kinetics feedback types TABLE3A, TABLE4, and TABLE4A.
• The heat structure surface property editing dialog was modified to allow editing the boundary control component reference during a graphical restart edit.
• The SI to British conversion factor for per degree (1/K -> 1/F) has been updated to increase the numerical precision of the conversion.

Version 4.5.3 - Internal Release for Testing

Version 4.5.2 - Released 3/24/2014:

• Support was added for new RELAP5-3D Version 4.1.3 input requirements. This includes support for moving
  problems, card 199 debugging options, and 2006 Groeneveld CHF correlation.
• The following series of UI improvements were made to better identify issues encountered in RELAP5 models:
  • Heatstructure surface cell references which identify missing cell, table, or control references are now
    written to the ASCII file as Unknown. This solves an issue where a zero value would be written and the UI
    displayed an error message.
  • An error message is now written to the model report dialog when a material has no entries defined for its
    table/functions.
  • An error message is included for Logical Trip components to identify situations where a trip has less than 2 input connections.
  • A model check will now be performed automatically prior to exporting a model from the file export menu. When errors are encountered A dialog will be displayed which will allow the user to view the error report, proceed with export, or cancel the export process.
• A typo was corrected for the Restart-Plot Input File Control compression flag where the value was being written as compress (should be cmpress).
• Model error checks have been added to ensure that max timestep values must be greater than or equal to the minimum value and greater than 0.0.
• The RELAP-3D wrapper module has been modified to ensure that the light-water property file is automatically included when executing a model that does not explicitly specify the fluid in a loop.
• An issue was resolved which could cause a restart case of a British model to switch to SI units when opening the restart case for graphical editing.
• The 3D kinetics model was updated to resolve an issue where the Fission Decay Yield Spectrum table would only have two columns when four neutron groups are defined.
• The 3D Kinetics model has been updated to allow specifying the krylov solution group-wise albedo ratios when all the boundary interfaces besides the inner mesh are set to 4 (albedos). An error message has been added if any of the one of the boundary conditions is set to albedos, but the any of the required boundaries are not set toalbedos.
• The NODPOWER print control option has been disabled. This option was added for an unsupported code version.
• The loop checker algorithm has been updated to support verifying connections through a multiple junction component.
• An issue has been resolved with the model notebook generation which could result in components that are only connected to a hydro system using a multiple junction component being listed in a generic hydro system.
• Full core Hexagonal support has been re-added as a Nodal Kinetics geometry option.
• The valve component was updated to move the face placement options into a tab in the geometry dialog, making it consistent with all the other components that support the face placement data.
• The ASCII import logic for variable trips has been updated to correctly determine the units of the additive constant before creating a numeric variable reference when a UNIX substitution variable is defined. The variable tripsupport was updated to revise how the units for the additive constant are determined. The units are obtained from the firstnon-null input source. This resolves an issue where the units of the additive constant change after a copy/paste operation or a sub-system import when a trip is connected to a null signal source.
• The ASCII I/O routines have been modified to prevent displaying an error message which indicates that the 80 character input limit has been exceeded for a line when the line includes a comment character before the 80 character limit. This allows comments to exceed the limit without causing an error message.
• The channel selection editor used by animation plug-in Display Beans was updated to allow channels to be grouped by type (i.e. prefix). For example: The RELAP5 pressure channels (p-*) are now displayed as a singlerow in the selection window that can be expanded to show all of the pressures.
• The RELAP sub-system integrator was updated to allow Reactor Kinetics to be included in the integration process.
• The text annotations for control blocks displayed in a drawn view have been modified to prevent annotations from being displayed for properties that are disabled.
• An issue was resolved that caused the minimum and maximum value properties of control blocks to appear when the limiter field is set to a non-zero value and the control block type is converted to constant or PVM control
  component.
• The reactor kinetics nodalization displays for nodal kinetics have been updated to properly display the hex geometry.
• An issue was resolved where group 3 volume region data in a GEN feedback nodal kinetics model was being added to group 2 volume region data.
• An issue was resolved that caused the flexible wall area to be lost during copy-paste of a single flexible wall
  component.
• An issue has been resolved that would cause an error when attempting to export a model notebook that includes 2D component renderings while running the model editor in headless mode.
• The dialog for editing the extra deck data of model options was updated to be non-modal. This allows the rest of the user interface to function while the dialog is open. Additionally this dialog uses the same syntax highlighting as the ASCII views, and includes a margin line indicating the 80 character limit.
• The "Show ASCII" feature for a sub-system was updated to more closely match the formatting used when exporting a full ASCII input model.
• The Multi-Junction geometry, initial conditions, and friction editing dialogs will now display connection information for each of its junctions.
• The process for retrieving initial conditions from completed RELAP5-3D runs has been modified to support the extraction of temperature values from the output file for RELAP5-3D version 4.3.1. Changes to the output format in version 4.3.1 prevented SNAP from parsing this data.
• The RELAP5 Sub-System integration feature was updated to support cross-references for the following properties:
  • Single Volume: Volume Control, Volume Table
  • Heat Structure: Radial Mesh Node Material, Nodal Kinetics Zone
  • Pressurizer: SurgeLine Junction, Spray Junction
  • Branch: External Junction Data
  • Signal Variable: Mutliple Flexible Wall
  • Single Flexible Wall: Wall Table
  • Multiple Flexible Wall: Wall Table
• An issue was resolved that prevented cross-references from being reconnected between signal variables and other components.
• An issue was resolved that prevented Branch external junction data from being retained during copy/paste or subsystem update.
• The heatstructure axial power/heating editor was updated to support source format types 5,6,7, and 8 for all heatstructures which define a heat source.
• The Notebook export logic has been updated to change how the check box options defined in the Friction property Cell Options table and the Geometry property Junction table are exported. Checkbox editors that correspond to integer ASCII values export in the notebook in the form of true (#) when selected, and false (#) when unselected. The # corresponds to the ASCII number that will be included in the ASCII input.
• The junction CCFL model reference in the model notebook has been revised. If any junction inside the component contains a reference to an internal CCFL model, all the junctions will export their CCFL reference with a link to the CCFL model description. Any junction without a CCFL model will write out the text None. If a component has no CCFL model references, the CCFL model property will not appear in the Junction Geometry Data report table. Several optimizations were added to the "Show ASCII" feature for RELAP5 components.
• The Point Kinetics Volume Weighting feedback table editor now provides multi-edit, copy-paste, and shared numeric reference capabilities.
• The Resource File Import/Export feature was updated to include Sub-Systems and Owner/Reviewer information.
• Restart cases in RELAP models now include an independent set of extra deck data that is kept separate from the base models extra deck data. The extra deck data can be edited when the restart case is selected in the navigatoror when graphically editing the restart case by changing the extra deck data in model options. A text comment delimiter has been created that indicates that the cards after a predefined point should be included as extra deck data.
• Control blocks and Trips can now display a text summary of the equation they represent. These summaries are automatically included in the model notebook. A flag has been added to the Control Blocks and Trips nodes in the navigator, which includes the text summary as a comment in the components ASCII. Additionally the 2D drawing of a control block or trip has an option in the right-click popup menu to display the summary text through a pop-up dialog.
• The notebook exporter has been updated to include a note after the summary tables for heat structures andhydraulic components indicating that the summary table values are calculated.
• The expanded plot requests editor was improved and now supports those signal variables which allow a -1 parameter value.
• The 2D hydraulic component rendering in views and property editing dialogs has been modified. The rendering angle for each volume has been modified to use a calculated angle based on the ratio between DZ and cell length when the DZ is explicitly specified. When the full 3D position change matrix is used, the DZ along the X axis is used. If the explicit DZ value is not specified, the vertical angle is used instead.
• The input connections property editor for control blocks and trips have been modified to be enabled while performing a GUI edit of a restart case.
• The notebook exporter has been updated to change how numerics variable references appear. Whenever a variablereference is used inside a component, the name and current value for the variable are written to the notebook. The name field appears highlighted in blue, and a cross-reference to the numeric variable reference is included after the value. When appropriate, engineering units are included in the display.
• An issue was resolved in the RELAP5-3D wrapper module that prevented the appropriate fluid properties files from being automatically selected for models with 3D hydro-dynamic system coordinates defined.
• The Multi-Dim component initial condition import logic was updated to ensure that the edge data is imported
  correctly.
• The RELAP retrieve initial conditions dialog was updated to resolve an error that would prevent importing the heat structure temperatures from major edit data when the major edit frequency is greater than the restart frequency. Additionally this dialog was updated to prevent UI errors when the output file does not include any major edits, or only includes a single major edit.
• The logic for importing a completed RELAP job into the calculation server has been updated to support parsing the output file for the heat structure temperature data.
• The Multiple junction component was updated to include a flag that enables compression of the junction data on export. If this flag is set to TRUE, the junctions will be compressed into sets with the smallest possible number of sets created. If this flag is set to FALSE, each junction will be exported explicitly. Junction signal variables will automatically adjust to match the junction numbers being output. The compress flag defaults to TRUE, but is initialized during an ASCII import to match whether the imported multiple junction used a compressed format.
• The junction control variables were updated to report a message during an ASCII import if they are connected to a multiple junction that will export with a different set number than the original file.
• The General Table export check error message for identifying max number of allowed table data pairs is now displayed when more than 10000 data pairs are entered.
• The model notebook export has been modified to include references to model notes that are linked to component name, component number and description fields. These references are included in the report immediately after the description text for each component.

Version 4.4.2 - Released 10/28/2013:

• The 1D hydraulic component renodalization logic was updated to preserve the volume flow area numeric variable references when merging adjacent cells that share a numeric variable reference. Adjacent volumes with different variables will have a length-averaged volumetric flow area value based on the current value from the numeric variables.
• An issue was resolved where the open non-modal dialogs for 1D hydraulic components were not automatically being closed when that component is deleted.
• The split-pipe 1D hydraulic renodalization option was modified to close all of the open dialogs for the original component before performing the split operation.
• The Sub-System Integrator was updated to prevent unrelated or invalid connections from being carried into the master model during a sub-sytem import or update.
• An issue was resolved that prevented the demultiplexed output ("demux") from appearing on the RELAP5-3D job step when the "Demultiplex Plot File" is set to "Yes".
• The heat structure component was modified to automatically correct connections to 1D hydraulic components with a single volume (Pump, Branch, Jetpump etc) when opening an MED file with invalid internal cell references.

Version 4.4.1 - Released 9/19/2013:

• An issue was resolved that caused hydraulic components to disappear from views in the base model when importing a sub-system that contained heat structures with the same component numbers.
• An issue was resolved where an exception could be thrown when a view contained a flexible wall component and the model was changed from version 4.0 to 2.4 (This had no other impact than displaying an error message in the model editor screen file).
• An issue was resolved where the Pipe 2D rendering logic could place volumes in improper locations when the length of the cell was set to a small value.
• The heatstructure surface fouling factor attribute will now default to 1.0 for new heatstructures. This is the default value provided in the R53D users manual and represents an unfouled surface.
• The completion dialog for the multi-dimension component has been updated to fix the labels for the Cartesian geometry dimensions.
• The heat structure boundary condition property for selecting the hydraulic face has been updated to show the correct axis label for the value.
• The orientation angle column in the geometry editing dialog for 1D hydraulic components has been updated to revise the auto-correct for angles greater than 90 degrees or less than -90 degrees. The new auto-correct behavior results in an equivalent angle (95 degrees is converted to 85 degrees).
• The RELAP5-3D plug-in was updated to support heatstructure surface convection option 153 ( Nusselt/Chato - Vierow-Schrock (UCB) for condensation). This option is only available when the RELAP53D version 4.0 is selected. A model error will be reported during model validation when this option is selected and the model version is changeed to a version earlier than 4.0.
• The 1D hydraulic component renodalization was updated to resolve an issue where numeric variable references are lost. Variable references for values that are unaffected by the renodalization will be preserved for both split and merge operations.

Version 4.4.0 - Released 7/11/2013:

• The RELAP5-3D plug-in has been updated to support the new version 4.0 input requirements. These include:
  - Single and Multiple Flexible Wall components and associated General Table/Signal Variables.
  - Kinetics Time Step Control Data provided as an attribute group under Model Options.
  - Heatstructure surface control variable driven Heat Flux boundary type [-2XXX]
  - Reactor Kinetics Fission product types - ANS05-1 & ANS05-4.
  - Additional metal water reaction values
  - Group-wise Albedos for Krylov Solution
  - Model Notebook entries, model checks, and ASCII import/export logic for the above features
  - Batch support for RELAP5 3D version 4.0 (New version tag available: RELAP IMPORT R53D 4.0 ....)
• An issue was resolved in the PIB-based RELAP5-3D plot file support that caused the Animation plug-in's Skip Forward feature to skip one less step than requested and the Skip Back feature to skip one more step than requested.
• General tables with more than 99 rows are written out using continuation lines, where the continuation lines are spread amongst the available card numbers to ensure that the 2K character line length limit is not exceeded. General tables in RELAP5 3D with more than 2000 rows are written out with two table pairs on a line.

Version 4.3.7 - Released 6/11/2013:

• The RELAP53D plug-in users manual was updated to include an entry for the batch command which allows importing UNIX substitution variables from ASCII.
• The subsystem ASCII view and comparison logic was updated to organize components by category and component number. This makes it much simpler to compare subsystems.
• The display units for reactor kinetics power properties have been modified to be Watts for British as well as SI units. This only affects the units displayed when animating or plotting a RELAP5 or RELAP5-3D model.
• An issue was resolved where editing Reactor Kinetics control rod groups failed to provide undo/redo functionality.
• The number of General Table table entries written has been increased beyond 99 when more than that are provided.
• The Heatstructure Axial Cell/Boundary Condition editor now specifies a more appropriate initial split pane divider location.
• The ModelEditor component deletion process was updated to ensure that deleted components that are part of a subsystem are automatically removed from the sub-system at the same time.
• The Pump component 30XX card series multiplier table export logic was updated to fix a typo where the void fraction comment header was written as voidf. It has been changed to voidg. Additionally, the column headers for these values were updated to now properly indicate the specified data as either pump head or torque multipliers.
• The Heatstructure convective boundary condition option for RELAP5 3D was updated to include the [115] Swirl Tubes option and to remove the [124] CANDU option.
• An issue was resolved that prevented exporting a RELAP53D model notebook with version 2.2 or 2.3 and a RN
  Specie defined.
• A new External Junction editing dialog is available to the Separator component. This editor now makes it possible to specify the connection face on the Separator which is connected to the target component.
• The branch component has been updated to sort the outgoing connections based on the position of the target component.
• The Multi-Junction 2D drawing logic was updated to better position hydraulic connections. The components crossflow connections will now be bound by the closest connecting points available at the specified axial level.
• The Multi-Dim component has been updated to resolve an issue when retrieving initial conditions from a completed run.
• The Control Rod Group Assignment editor has been updated to include a cleaner layout and more useful node selection logic.
• An issue has been resolved where the job stream model nodes created after importing a RELAP or RELAP5-3D model would be initialized with a component number of 99999.

Version 4.3.5 - Released 3/29/2013:

• The license file name used by the RELAP5-3D wrapper module was updated to the correct name 'rellic.bin' from the incorrect 'relic.bin'.
• The motor trip property editor in the [CCC0301] Pump Options attribute group does not provide a way to deselect a
  trip after one has been selected.
• The Reactor Kinetics completion dialog will now always display 2 for the number of neutron groups available to the RBMK feedback type.
• An error message is reported when a hydro-system has a null cell reference.
• The initial condition set property editor has been updated to resolve an issue which would prevent stored sets from being added to the model correctly if initial conditions are retrieved from a plot file.
• SNAP will report an error if a model is opened that contains a Hexagonal geometry in nodal kinetics. Attempting to import an ASCII model that uses hexagonal geometry will result in an error being reported and the model failing to import.
• The kinetics completion dialog has been updated to remove the ability to select hexagonal geometry for nodal kinetics.
• The label for the RBMK feedback type for Nodal kinetics has been corrected from RMBK.
• An issue was resolved where attribute level documentation shared between multiple components including a root component caused a failure to occur during model notebook export. Additionally attribute level documentation shared on model options or category components properly display backward component references.
• The neutron group3 and group4 velocity and fission spectrum properties are disabled when RBMK feedback is used for nodal kinetics.
• The name editor used by job stream related components in the Configuration Tool and the ModelEditor was changed from automatically converting the entered name to only accepting valid names. Valid names contain only alpha-numeric characters, underscores(_), periods(.), and, for all but platform names, dashes(-). The job stream submission processes in each of the affected plug-ins were updated to support the new Job Stream
  naming constraints.
• The control rod groups editing dialogs for the movement controller and the multiplier controller have been modified to only allow selecting a control block or general table. If a selection to something other than a control block or general table has already been made, a 0 will be written out to the ASCII model.
• An issue was resolved where cross section discontinuity factors were not being exported for Nodal Kinetics GEN and HWR feedback types.
• The logic that the RELAP plug-in uses to split values into multiple lines was updated to fix the case where a line that is 81 characters is not wrapped appropriately.

Version 4.3.4 - Released 1/8/2013:

• Revised the GUI editor for the feedwater heater component friction editing panel to allow for setting the shape and viscosity fields.
• The Nodal kinetics User Figure nodal assignment dialog has been updated to allow multi-edit on the selected columns as well as rows.
• The nodal kinetics XeSM and SM data dialogs were updated to resolve an error that could occur the first time the dialogs are opened.
• A heat structure ASCII import issue was resolved that caused undefined editor behavior for heat structures imported from ASCII with a Temperature Option less than 0 and no initial temperature cards (1CCCG401-99).
• The Manage Initial Conditions dialog was updated to ensure that the name or description currently being edited is saved when pressing the OK button.
• The user variable figure value weights are now activated on a per/figure basis through the User Figure Data editing dialog.
• The ASCII import logic of the radionuclide signal variables has been updated to allow for the proper import of RN variables.

Version 4.3.3 - Released 11/26/2012:

• The ASCII import logic for verifying consistent hydraulic system fluid types has been updated to resolve an issue which could result in generating a duplicate hydraulic system.
• The ECC-mixer, Jet Mixer, separator and Feedwater heater components have been updated to write out default values for the CCFL properties on the junction geometry cards.
• The Nodal Kinetics editors for specifying composition and zone planar assignments were updated to include tabular views. A table of zones/compositions is provided, which when selected; highlights each of the planar locations (in the provided figure drawn representation) where the selected component is assigned. Additionally, a table is included which displays planar coordinate locations in conjuction with the component assigned to that location (either zone or composition). Previously, only a 2D drawn representation was provided, which made it difficult to assign values to figures which had a large number of planar nodes.
• An issue was resolved where 3005PP01 through 3005PP99, Kinetics Node Initial Power Distribution Figures values were being written starting with a PP of 0 (value must be greater than zero and less than the number of planes).
• An issue has been resolved that prevented selecting a user defined numeric while editing a restart case for the first time.
• A model node in a job stream that writes out numerics by name has been modified to only write out variables that start with a $ for both Restart Cases and the base model.
  

Version 4.3.1 - Released 10/31/2012:

• The way user defined numerics appear inside table cell editors has been resolved to ensure selecting a user defined numeric inside a table always results in displaying the selected variables name.
• The "Set" editing dialog for the Multiple Junction "Connections" property was updated to more correctly determine the initially displayed cell indexes, cell faces, and increments, used to create the selected junctions.
• The Turbine component was updated to prevent exporting the CCC0131 card. The corresponding columns in the friction dialog no longer appear for turbines.
• The Cell / Junction Friction dialog has been updated to remove the redundant Y-Z and Z-Z columns from the Y and Z value panels.
• The external junction component ASCII export logic has been modified to write out words 2-4 on card CCCJ110 only for Branch external junction components.
• The Cell Options panel inside the Cell / Junction Friction data dialog has been updated to remove the columns that are not supported for editing while editing a feedwater heater.
• The CCFL model component has been updated to automatically refresh all open ASCII views when a value in the CCFL model is modified.
• The cell vertical angle, and elevation change fields automatically update when the DZ along the X axis field is modified when defining the elevation using a rotational matrix.
• The ASCII import process has been updated to generate hydraulic systems when a cell inside a hydraulic component identifies a fluid type, and the component is not part of a hydraulic system.
• The heat structure temperature option was updated to remove the enabling checkbox for the temperature source heatstrucure reference.
• The heat structure materials have been updated to report an error when the material table contains only one row, or if duplicate independent variable values are encountered.
• The Turbine component has been modified to remove the extraneous volume number value from the export of card CCC9801.
• The ECC-Mixter component has been modified to remove the extraneous volume number value from the export of card CCC9801.
• The Feedwater Heater component has been modified to remove the extraneous volume number
  value from the export of card CCC9801.

Version 4.3.0 - Released 9/5/2012:

• The model options ASCII export logic was updated to prevent writing out the 107 card when the RELAP5-3D version is earlier than 2.4.
• The multiple-junction set dialog was updated to prevent a user from selecting an increment value of 0.
• The multiple-junction connections dialog was updated to resolve an issue which would cause inserted connections to be put at the top of the list of connections.
• The heat structure component interpolation of temperature values was updated to be more robust.
• The ASCII export logic for hydraulic components that overwrite the non-condensible fractions data has been updated to ensure that volumes which do not overwrite the defaults are exported with the default values.
• The RELAP5-3D ASCII export logic for the initial non-condensible fractions of hydraulic volumes has been updated to ensure that the card is always exported with 6 words.
• The model options ASCII import logic for the stop-trip cards has been updated to accept a value of 0.
• The restart case export right-click menu option has been updated to preserve the user-defined numerics after the export routine is run.
• An issue was resolved with the parametric job stream submission which would cause a temperature iteration to incorrectly iterate including the temperature offset.
• Support was added for automatically copying the RELAP53D license file (relic.bin) into the working directory of each RELAP53D task.
• A warning dialog was added to notify the user when opening a model saved as a code version not supported by the currently installed RELAP5 plug-in.
• An issue was resolved where developmental option 0 (list all namelist options) was enabled SNAP 2.2.0 Change Logs Page 4 of 8 when the provided namelist editor was activated but set to false. This editor no longer includes an activation checkbox and the value will not be written when set to false. Addtionally, the TSA metric export logic will no longer use the namelist activation value for developmental option 0.
• An issue was resolved where any control system input could be made to a logical trip. An error message is now provided if the connected component is not a trip connection.
• An issue was resolved in the RELAP5 Job Stream support that treated the RELAP5 strip file output as a required output for normal jobs.
• An issue in the RELAP5 Animation plug-in support was resolved that caused intermittent failures during fast running interactive animations.
• An issue was resolved where a radionuclide specie could not specify a reference parent specie unless nodal kinetics was used. This is not a valid requirement.
• An issue was resolved where material property tables which define temperatures were defaulting to absolute zero temperatures when adding new rows (new rows now default to unknown).
• The Radionuclide Species data was incorrectly made available for RELAP53D versions 2.2 and 2.3. This issue was resolved and the RN species data is now only available in version 2.4.
• An issue was resolved which prevented reading the user controlled time-step control variable on card 200.
• An issue was resolved which prevented reading in print option ranges for volumes and junctions.
• Printed output blocks are now always enabled and disabled by using card 4. Previously card 5 was used to disable output blocks but this was not necessary.
• An issue was resolved where developmental options disabled values (negative) were imported and defaulted to active values (positive).
• An issue was resolved where the specified RN species name could exceed the 5 character limit.
• The user interfaces for the Timestep Control, Volume Print and Junction Print dialogs were updated to provide a cleaner layout.
• An issue was resolved which would cause the preserve initial conditions property of a restart case to be lost when opening a MED file.
• An issue was resolved where the material heat multiplier value (word 4 on the 201MMM00 card) was not available for specification in version 6.3.
• An issue was resolved where developmental options were not written using continuation characters and could have exceeded the 80 column length.

Version 4.2.3 - Released 5/22/2012:

• Signal variable AHGTF was not available in the list of component signals. This value (Accumulator vapor enthalpy at liquid temperature) was incorrectly represented by AHFTF which is not a valid signal variable name. The AHFTF signal variable name has been changed to AHGTF.
• Signal variables CCFLF, RKACPOW, and PMPISL were missing in the Signal Variable lists. CCFLF (Junction CCFL flag) was added to the list of Junction Signals, RKACPOW(Total actinide decay power (W)) was added to the Power Signals and PMPISL(Pump motor slip) was added to the Component Signals.
• Heat structure card 1CCCG501 convection type 161 "orced" typo was changed to "forced".
• The resource import logic was updated to ensure that notes on reactor kinetics and model options are reconnected correctly when preserving documentation.
• An issue was resolved that prevented Model Notes from being assigned to Model Options in newly created models (created but not saved).
• An issue was resolved where the Multi-Dim inner radius property would incorrectly be written as a non-zero value if it was first set and then disabled. This only occurred when the proceeding dimension value was enabled while the inner radius properly was disabled.

Version 4.2.2 - Released 4/10/2012:

• The Multi-Dim cell and junction data structures were updated to include a unitless field that represents the volume fraction inside the cell and the flow-area fraction inside the junction. These fields are required input for the MULTID component inside RELAP-3D but were calculated at export time from the volume and flow area respectively. Adding the fractional volume and flow area fields explicitly allows for modifying the geometry of the MULTID component without modfiying the exported volume fraction and flow area fractions. The 3D renodalization logic for the MULTID component was updated to split and merge the volume fraction and flow area fraction fields inside the cells and edges affected by a renodalization.
• The mult-dim component has been updated to resolve an issue where the volume fraction defined inside the cells would change after changing the geometric data of the multi-dim component.
• The editor for defining cell and edge data inside a multi-dim has been updated to greatly improve the speed of pasting in values to multiple selected cells.
• An issue was resolved where the heat structure surface boundary component could be written when a non-convective boundary connection was set.
• An issue was resolved where the multi-dim junction choking option editor was incorrectly set as a CCFL model selection editor.
• An issue was resolved where the heatstructure ASCII write logic failed to write a 0 for word 1 on card 1CCCG501 when a symmetric boundary condition was selected. The previously defined boundary reference cell was still being output. The manual states that this value needs to be 0 (insulated).
• An issue was resolved where editing the Multi-Dimensional component geometry data failed to update the ASCII viewer.
• An issue was resolved where the choking model option was incorrectly set to use a CCFL model selection editor in the friction dialog.

Version 4.2.1 - Released 2/27/2012:

• An issue was resolved which could prevent exporting a RESTART case to an ASCII file.
• The Restart case has been updated to display a message when the ASCII export has been completed.
• The routines used to generate TSA metrics will now provide a more comprehensive range of attribute values.

Version 4.2.0 - Released 1/19/2012:

• The "Demultiplex Plot File" option was added to the RELAP53D Job Stream Step to request that the plot files be demultiplexed after the task completes. Activating this option also enables the "demux" output.
• An issue has been resolved with the variable trip input connection validation test which could cause errors when building a model error report when a trip with invalid input connections has a name containing a '<' character.
• The restart case ASCII text editor was updated to resolve an issue where pasted text appeared on a single line.
• An issue was resolved in the Restart Case graphical editing process that caused the components included in the restart to disappear from 2D views while editing the case.
• An issue was resolved that caused extraneous carriage returns to be added when pasting ASCII restart input into a Restart Case.
• The RELAP Restart cases were modified to include the capability to preserve user defined numeric references, these encoding for the variables is included at the top of the restart case.
• Restart cases may be associated with a set of initial conditions stored through the manage initial conditions dialog. This condition set will be loaded on the model before applying the changes defined in the restart deck.
• The turbine component was updated to prevent accidentally including the turbulent wall-friction multipliers, which are not allowed for the turbine component.
• The model notebook export logic for heat structures was updated to resolve an issue exporting a heat structure that uses a control block as the heat source.

Version 4.1.0 - Released 10/18/2011:

• An issue was resolved in the RELAP53D Animation Module that caused Generic Color Maps in RELAP53D animations to use the RELAP5 channel name patterns rather than the RELAP53D patterns.
• An issue was resolved that prevented the signal variable type selection dialog from recalling its previous location and shape when reopened.
• The "Reactor Type" label was changed to "Kinetics Model" in the dialog displayed when enabling Reactor Kinetics.
• The Heatstructure Radial Geometry editing dialog "Source Value" column was renamed to "Relative Power."
• The "Buffer Data Messages" option was added to RELAP5 and RELAP53D application definitions. This option works around an issue in the SNAP interactive port logic of older RELAP5 executables that caused end time notifications to be sent before the timestep data was written to the graphics file.
• An issue was resolved where saved initial condition sets failed to retain the heatstructure steady-state initialization flag value.
• The time step controls editor was updated to initialize the selected options when opened.

Version 4.0.9 - Released 10/11/2011:

• An issue was resolved in the "Import Completed Job" feature for RELAP53D jobs that prevented some outputs from being recognized.
• An issue was resolved in the Heat Structure Radial Geometry editor that caused the "Decay Heat" option to be appear in some cases when it was not being used.
• The "Retrieve Restarts" dialog was updated to display "No Data" rather than "NaN" for jobs with no end time defined (e.g. Job Streams) and to enable the "Load Job" button only for RELAP jobs.
• An issue was resolved in the Radiation Enclosure "View Factors" editor that caused it to display "jLabel" rather than "Invalid Values" when no valid heat structure data was defined.
• The "Retrieve Initial Conditions" feature was updated to correctly support the PIB-based RELAP5-3D plot file format.
• An issue was resolved in the Model Notebook Export process that prevented an error message from being displayed or the file from being closed when a critical error occurred during the export process.
• An issue was resolved where the ASCII restart case editor was appending extraneous carriage returns to the resulting ASCII data.
• An issue was resolved where noncondensible gas overrides failed to import for hydraulic components which consist of single cell data.
• An issue was resolved where when the Compressor position change property was disabled, x and y change attributes remained.
• An issue was resolved where relief valve initial stem position property was set disabled when the valve was open.
• The compressor component export logic will now sort the relative velocity table data.
• An issue was resolved where the Accumulator editors displayed Y and Z crossflow data (these values are not used).
• An issue was resolved where the prizer component was not reading or writing values on card CCC0002.
• An issue was resolved where valve bellows pressure activation was always being set active on import (this should only be active when a non-zero value is specified).
• An issue was resolved where motor valve close change rate could be exported in RELAP5-3D (This is a NRC-RELAP5 attribute).
• The 2D pivot option was removed from the time dependent volume component.
• An error message was removed which stated that compressor components were not available when switching a RELAP53D model from version 2.4-2.6.
• An issue was resolved which prevented the GE separator table editors from setting values.
• The Pressurizer surgline connection editor now provides a "None" option.
• An issue was resolved that prevented the RELAP version from being reset when the Illegal Components Dialog was canceled.
• An issue was resolved where an invalid error message (Volume Control not set) was reported for components containing hydraulic cells.
• The Additional Junction Data tab of the Geometry dialog is now disabled when the Choking Model property of every junction is set to 1 --- No Choking Model.
• An issue was resolved that prevented negative azimuthal angles from being entered via the Geometry dialog's Orientation tab for hydraulic components.
• An issue was resolved which prevented the Boron Concentration property in the Fluid Condtions dialog from being written to ASCII for the Accumulator component.
• The hydraulic component properties dialog was updated to restore the last selected tab when the model version/flavor is changed.
• An issue was resolved where the junction choking flag option 2(Henry Fauske) was provided for the base RELAP5 model flavor. The Henry Fauske choking model is enabled in base RELAP5 by setting the choking flag to 0 and developmental option 50 inactive.
• The Multi-Junction compression routines were updated to ensure proper comment headers are written for the subcooled, superheated, and discharge coefficient choking values.
• The valve component face placement options can now be specified for RELAP5 3D models.
• The pump component was modified to allow specifying cell movement options.
• The junction form loss flag enabling logic was configured for TSA testing.
• The Pullthrough Options column of the Geometry dialog's Additional Junction Options tab was disabled for all components except Single Junction, Branch, Feedwater Heater, and Valve.
• An issue was resolved where the Momentum Flux column of the Geometry dialog's Junctions tab was inadvertently enabled for the ECC Mixer component.
• The logic that controls the turbine export in RELAP5 3D models has been updated to resolve issues writing out the variable frictional torque and the variable inertia data with default values.
• The Separator, Jetmixer, Turbine, Feedwater Heater, and ECC Mixer components no longer allow defining CCCN110 CCFL data.
• The Hydraulic Diameter property was removed from the Junctions tab of the Geometry dialog for the Turbine component.
• An issue was resolved in the Compressor component which prevented the Rotation Velocity Ref. property from being set when the Rotation Velocity Data property was set to Reference Rotation Velocity Data.
• An issue was resolved in the Single Volume export logic that caused the viscosity values for the Y and Z directions (words 4 and 6, card CCC0131) to fail to be written when shape values were entered.
• An issue was resolved in the Feedwater Heater component that prevented the correct card number for the Drains Inlet and Outlet junctions' additional junction data from being written.
• A Compressor issue was resolved that prevented the Reverse Indicator, Shaft Trip, and Rotation Vel. Trip properties from being imported.

Version 4.0.8 - Released 8/16/2011:

• The RELAP5 and RELAP53D wrapper modules were updated to ensure that any material properties files temporarily copied into the working directory are added removed when the job completes or is deleted.
• The legacy SNAP Data graphics file format was added to the RELAP5 Job Step and Wrapper Module to support older versions of RELAP5. This feature can be enabled by setting the "Plot File Type" option of a RELAP application definition (in Configuration Tool) to "SNAP Data".
• The Pullthrough Options column of the Geometry dialog's Additional Junction Options tab was disabled for all components except Single Junction, Branch, Feedwater Heater, and Valve.
• Resolved an issue where the Momentum Flux column of the Geometry dialog's Junctions tab was inadvertently enabled for the ECC Mixer component.
• Exported ASCII models now contain meta data in the comments at the top of the file that contains information about how the model was generated.
• The ASCII import logic has been updated to compare the version included in an ASCII file's meta data with the version selected in the ASCII import dialog. If the versions do not match, a verification dialog is displayed allowing the user to select which version to use.
• The floating point parsing logic in the ASCII import has been updated to support double values that use a 'D' or a 'd' to indicate exponential data.
• The logic that controls the TURBINE export in RELAP5 3D models has been updated to resolve issues writing out the variable frictional torque and the variable inertia data with default values.
• The Separator, Jetmixer, Turbine, Feedwater Heater, and ECC Mixer components no longer allow defining CCCN110 CCFL data.

Version 4.0.7 - Released 7/11/2011:

• The RELAP5 model error report dialog now provides an issue correction button on the "first argument as null 0" numerical trip error message. This option can be used to modify the input connections on a numerical trip such that the second input connection is set as the first. The original input arguments relationship type (greater than,less than, equals...) is not changed.
• The undo/redo logic associated with completion dialogs was updated to ensure that a single undo step is added when creating a new component (even if multiple components are added at once) and no undo step is added when the dialog is canceled.
  
• The hydraulic component properties dialog was updated to restore the last selected tab when the model version/flavor is changed.
  
• An issue was resolved where the junction choking flag option 2(Henry Fauske) was provided for the base RELAP5 model flavor. The Henry Fauske choking model is enabled in base RELAP5 by setting the choking flag to 0 and developmental option 50 inactive.
  
• The Multi-Junction compression routines were updated to ensure proper comment headers are written for the subcooled, superheated, and discharge coefficient choking values.
• The valve component face placement options can now be specified for RELAP5 3D models.
• The pump component was modified to allow specifying cell movement options.
• The junction form loss flag enabling logic was configured for TSA testing.

Version 4.0.6 - Released 6/10/2011:

• The RELAP5 Job Step and Wrapper Module were updated to use the task name as the prefix for input (Task.inp) and output (Task.rst, Task.out, etc.) file names.
• The Completed Job Importer was updated to correctly support the PIB-based RELAP5-3D plot file format.
• The Job Stream created as part of a new RELAP53D model no longer uses the first available RELAP5 executable for the RELAP step.
• Resolved an issue that prevented negative azimuthal angles from being entered via the Geometry dialog's Orientation tab for hydraulic components.
• Resolved an issue which prevented the Boron Concentration property in the Fluid Condtions dialog from being written to ASCII for the Accumulator component.

Version 4.0.5 - Released 5/6/2011:

• The "Plot File Format" custom option was added to Application Definitions (in Configuration Tool) for applications of type RELAP5-3D. This option indicates whether the selected executable produces a single RSTPLT file or a separate Pib-Based plot file.
• The Pressurizer surgeline junction selection editor will now allow the selection of the outlet junction if the pressurizer is oriented downward.
• The UNIX substitution ASCII export logic was modified such that numeric names will be written up to the first space character. If a UNIX substitution variable is specified on attributes with different unit types, a space character and unique suffix will now be appended (previously this was an underscore followed by a unique suffix). This logic allows the substitution numeric names to be consolidated on export.
• An issue was resolved which affected the model check logic for RELAP5 3.0.6 and earlier med files. Heatstructure export logic would report that no surface boundary cell was connected when connected to hydraulic types which always consist of a single cell.
• An issue was resolved which caused the ModelEditor to deadlock when a Multi-Junction component was dragged onto a 2D view.
• An issue was resolved that prevented the RELAP version from being reset when the Illegal Components Dialog was canceled.

Version 4.0.4 - Released 4/15/2011:

• An issue was resolved which prevented setting developer options.
• Support was added for setting noncondensible gas overrides in RELAP5-3D Time Dependent Volumes.
• The 2D pivot drawing option was removed from the time dependent volume component.
• An error message was removed which stated that compressor components were not available when switching a RELAP53D model from version 2.4 to 2.6.
• An issue was resolved which prevented editing data using the GE separator table editors.
• The Pressurizer surge line connection editor now allows the connection to be deselected.

Version 4.0.3 - Released 3/26/2011:

• Fixed a read error that could prevent models saved in Verion 4.0.2 from openning.

Version 4.0.2 - Released 3/23/2011:

• The resource import logic will no longer close referenced models that are currently open.
• An issue was resolved where an invalid error message (Volume Control not set) was reported for components containing hydraulic cells. The Additional Junction Data tab of the Geometry dialog is now disabled when the Choking Model property of every junction is set to 1 --- No Choking Model.

Version 4.0.1 - Released 2/28/2011:

• Basic "Restart Case" support was added to the RELAP plug-in. This includes creating, importing, and exporting cases as well as using them in Job Streams.
• An issue was resolved that caused ASCII import to fail when using the ModelEditor in batch mode.
• The Expanded Plot Variable and Minor Edit Request editors now provide a remove option which allows the deletion of components which were created by the editor.
• An issue was resolved which prevented the creation of a default Job Stream for new RELAP5 models.
• An issue was resolved which prevented the Skip Back and Skip Forward animation playback operations from working correctly with a RELAP Data Source.
• The "Demultiplex Plot File" option was added to the RELAP Job Stream Step to request that the plot files be demultiplexed after the task completes. Activating this option also enables the "relap.dmx" output.
• An issue was resolved in the hydraulic component drawing routines that could cause unexpected drawing behavior (due to a NullPointerException) after a Sub-System Import.
• The ASCII import logic was updated to resolve an issue which could prevent hydraulic connections to multi-dim components from importing correctly.

Version 4.0.0 - Released 2/4/2011:

• Updated to support the new SNAP 2.0 functionality. This includes Job Stream support and headless capability. Preliminary support for restart cases has been implemented.
• A heastructure radial mesh merge renodalization issue was resolved. The resulting mesh length was not set to the sum of the merged radial meshes.
• The right-click menu "Add Heatstructure" functionality has been implemented for all appropriate 1D hydraulic and Multi-Dim drawn components.
• The single volume component rendering logic will now utilize the specified orientation. Additionally, the single volume completion dialog now includes the ability to specify an orientation.
• The valve drawn component is now rendered with an indication of flow direction.
• The signal variable model check logic will now report an error if the source component has not been specified.
• The 2D view connection source and target markers were modified to always display the associated component number.
• The Minor Edit Request and Extended Plot Variables editors now allow the selection of trip components. Additionally, the editing dialogs now include appropriate titles.
• The initial conditions import logic will now provide an error report dialog if issues are encountered. The dialog will list each of the issues grouped by component. A detailed list of missing data channels will be provided where appropriate. An information message will be provided when multi-junction components are included in the initial conditions import.
• The plug-in was updated to include the Self-Initialization option control data (cards 140-147). The Model Options component now includes a property for Self-Initialization data. A property editor is available for defining each of the types of initialization options (Pump, Steam-Flow, Feedwater, and Pressure control options). The Model Options ASCII read logic was updated to read the initialization options. The model notebook now contains a section for Self-Initialization options when they are defined.
• The cross-flow connection draw logic was updated to connect to the closest connecting point.
• The Shared integer enumeration draw logic was updated to provide a drop-down list and radio button display. These modes are accessible from the right-click pop-up menu on the drawn shared integer.
• An issue was resolved where a change in review properties was not being accounted for as a model modification. This prevented a user from being warned to save before closing the model.
• An issue was resolved where user defined numerics were not being added to views on resource import.
• User numeric drawn components are now retained when importing resources from other models.
• An issue was resolved where Heatstructure drawn components could be lost during subsystem import.
• An issue was resolved where a change in review properties was not being accounted for as a model modification. This prevented a user from being warned to save before closing the model.

Version 3.4.7 - Released 9/29/2010:

• The display label used in the editor for the Cross Section Region Data property was updated to "Region Data Points".
• Resolved an issue in the pipe completion dialog that set the internal junction flow area to the value specified by the "Flow Area" property of the pipe completion dialog. The internal junction flow area is now set to 0 for all pipes created using the pipe completion dialog.
• When exporting a model notebook, the control system sections may now be optionally divided into sub-sections by type (logical trip, variable trip, control blocks, etc.). This behavior is available as an option in the export dialog.
• The Core Node Assignment panel used in several editors (such as defining planar regions) has been adjusted for readability. Several low luminance colors used for cells have been significantly brightened and desaturated to make reading the cell labels easier. In addition, all cell labels are now rendered in a bold font.
• Scale factors specified on control block input connections now update the ASCII view of the associated control block.
• An issue was resolved where subsystem import failed to reassign the numerics which were specified for branch junction properties.
• Pipe component y and z direction wall friction data is now editable when utilizing the rotation matrix position change option.
• The numeric trip export routines now ensure the NULL signal variable is not written as the first input parameter.
• Added definitions for 7 new plot variables per Doug Barber.

Version 3.4.6 - Released 8/18/2010:

• The Multi-dim editing dialog used for the node geometry, initial conditions, and friction properties has been updated to resolve errors in the edge editing
  panel. The column headers for the property table have been updated to display the correct coordinates for the corresponding edges, and the top-down view selection has been updated to correctly display the selected table cells.

Version 3.4.5 - Released 7/16/2010:

• An issue was resolved where rotation matrix data failed to import properly when the dyx rotation value was set to 0.0 or 1.0.
• The following updates were made to the RELAP5 model notebook export logic:
  
• The hydraulic systems statistics are now listed under the RELAP5 Model report section. These statistics now include those hydraulic systems which were not included in the list of hydro. systems defined
  in the model options component.
• The section for system components which do not reside in a subsystem is no longer exported when all components are contained in subsystems.
• The heatstructure summary section in the notebook will now display total heatstructure surface areas for the right and left surfaces and total heatstructure volume.
• An issue was resolved where the left heatstructure surface area was being set on the right surface in the heatstructure summary page of the model notebook.
• An issue was resolved which caused the heat structure radial mesh locations to export incorrectly.

Version 3.4.4 - Released 5/20/2010:

• An issue was resolved which prevented setting user-defined numerics on hydraulic component geometry attributes.
• A split-pipe renodalization option has been added to pipes and annulus components. This utility splits the component at an internal junction specified by the user creating a new single junction and pipe/annulus in the process. Heat structures connected to the component will also be split accordingly.
• The following series of updates and bug-fixes were made to the RELAP5 model notebook export logic:
  
• The heat structure notebook export logic has been modified to only display the axial power/heating table for heat structures that have a non-zero source defined. Additionally, the left and right moderator heating flags have been removed from the Cell Source Data table.
• A note was added to the heatstructure boundary condition table in the model notebook which indicates that the displayed surface area is calculated when the surface area of the boundary is not explicitly defined.
• The heatstructure notebook export logic was updated to include a hydraulic face in the boundary condition table when the boundary is connected to a hydraulic component.
• The heat structure notebook export logic was modified to improve the readability of the wall thickness value.
• The model notebook export logic has been updated to prevent creating reference links to model notes which reference signal variables.
• An issue was resolved in the notebook export of heat structure additional boundary condition values that could cause the notebook export to omit values.
• Time Dependent Volumes have been removed from the calculations for total plant volume, length, and elevation change in the hydraulic statistics section.
• The separator Cell Friction Options table was modified to only include the Non-equilibrium attribute. Additionally, CCFL and Modified PV term attributes have been removed from the Junction Geometry Data table for separators.
• The Cell Frictions Options table has been removed from the Time Dependent Volume notebook export logic. Additionally, the following values were removed from the
  Cell X-Axis Wall Friction table: Shape, Viscosity, Alt. Turbulent Wall Friction A, Alt. Turbulent Wall Friction B, and Alt. Turbulent Wall Friction C.
• The Choking Model option used by hydraulic components now displays the enumeration value with a brief description of the value. Previously, this was incorrectly displayed a boolean option where the descriptions of those boolean values were inverted.
• The Time Dependent Junction notebook export logic will no longer include the following unused tables: Geometry, Friction Data, and Initial Conditions.
• An issue was resolved for the hydraulic components Compute Wall Friction option where the description of the specified value was incorrect.
• The pipe and prizer notebook export logic was modified to omit the Additional Junction property Pullthrough Options. Also, the additional junction properties will not be exported to the notebook when the Define Control Flag Constants property is not enabled.
• An issue was resolved in the Branch, Separator, and Pipe component notebook export logic where the first junctions friction data would be exported for each of the rows in the table.
• The Time Dependent Volume will now export a Fluid Conditions section (Previously this was labeled "Initial Conditions"). The Fluid Conditions table was updated to include the search variable, condition properties, and optional boron concentration.
• The multiple junction notebook export logic was modified to use a consistent naming convention for describing the junctions.
• The pump Cell Friction Options table was modified to include only the Non-equilibrium attribute. Additionally, the Cell X-Axis Wall Friction table was removed.
• An issue was resolved for the hydraulic component Interphase Friction property where the description for value 0 was incorrect. It now indicates that the Pipe Interphase Friction Model will be applied.
• The heat structure radial geometry export logic was updated to resolve an issue where unknown values could be exported for the outside radius field.

Version 3.4.3 - Released 5/11/2010:

• References to pre-release Job Stream library classes have been removed to provide compatibility with SNAP Version 1.2.3.

Version 3.4.2 - Released 4/9/2010:

• A "Preserve Initial Conditions" option has been added to the restart ASCII import dialog. When activated, this option will prevent the initial condition data from being updated for resupplied components read from the ASCII restart file.
• The ASCII import logic for the pipe forward and reverse flow loss coefficients has been modified to resolve an issue where the loss coefficients would only be enabled if both the forward and reverse fields were non-zero.
• An issue was resolved that caused the ASCII input listing to be included in the Model Notebook export regardless of the "Include Input Listing" setting.

Version 3.4.1 - Released 3/5/2010:

• Several minor performance improvments were added to the hydraulic component Geometry dialog to increase the speed of user defined function execution.
  
• A Sub-system Integrator issue was resolved that would cause a General Table drawing to be replaced by the drawing of a hydraulic component in the imported sub-system that had the same component number.
• A copy/paste issue was resolved that caused the "SurgeLine Junction" property of PRIZER components to be lost when pasting into a different model. Note that this issue affected Sub-System Itegration in the same fashion.
• A Sub-System Integrator issue was resolved that prevented the "Update Sub-System" feature from properly reconnecting trip inputs.
• A Sub-System Import/Update check was added to indicate that Reactor Kinetics cannot be included in an imported sub-system.
• An issue was resolved where the compressor relative velocity table editor failed to set edited values.
• The view template import logic has been modified to correctly handle multiple connections between two control components.

Version 3.4.0 - Released 1/8/2010:

• The Calculation Server interaction logic was updated to support the new CAFEAN RPC communication package in SNAP 1.2.0.
• The default status of the Display Annotations property of drawn control systems is now editable as a RELAP5 plug-in property.
• The heat structure connection logic was modified to resolve an issue that could prevent changing a heat structures surface connection from one hydraulic component to a single-volume component.
• The heat structure copy-pase logic was updated to prevent the case where surface connections to single volume components would be lost.

Version 3.3.3 - Released 11/19/2009:

• The RELAP5 rstplt file editor, R5Edit,had been added to the plug-in installation package. This application was designed to reduce the overall size of a RELAP5 restart-plot file by eliminating unnecessary restart and/or plot records. It can also be used to list the contents of a RSTPLT file. R5Edit can be run in either batch mode or through a simple graphical user interface.
• The RELAP5 plug-in was updated to include I/O and editing support for specifying shared integers on plot frequency, edit frequency, and
  restart frequency.
• Control Blocks and Trip components now support displaying annotations when placed in a view. The Display Annotations property controls whether annotations are displayed. This behavior is off by default for existing models, and on by default for new components.
• Logical trips are now displayed in a view with standard logical gate symbols based on their operation.
• A check was added to provide a calculation log error message when an rdx file does not point to the proper major edit locations in the output
  file.
• An issue was resolved which prevented setting the Reactor Kinetics property reactor time.
• An issue was resolved in the reactor kinetics volume and heat weighting factors editor which prevented the deletion of table values.
• The option to include particular heatstructure nodes in the temperature calculation will now be properly displayed as disabled when referencing
  another heatstructure as a geometry reference.
• An issue was resolved that caused HTML tags to appear in the model notebook export of servo valves.
• Model notebooks will now export control systems ordered by type.
• A issue was resolved that caused one connection to be lost from the multiple junction components each time they are copied and pasted.
• An issue was resolved in the SubSystem Integrator that caused interactive variable drawings to be replaced in the updated 2D view by another component with the same component number.
• A typo was corrected in the cross section composition editor.
• General Table components were removed from the list of minor edit variables. These components can be added as either a tablein or tableout General Table Quantity which can be created in the Component Signal Variables.
• The units for the dependent variable column of general tables that use the power type have been modified to use Watts in SI, and MW British. Existing British models will automatically convert over to MW when they are opened.
  

Version 3.3.2 - Released 10/8/2009:

• The default value for the control sum block additive constant was changed to 0.0.
• The heat structure "Axial Cells / BCs" editor was updated to automatically expand all surface and cell property attribute groups.
• The Model Notebook side-by-side table export (used primarily for homologous curves) was modified to work around a converter issue that prevented the notebook from opening in MS Word.
• The Model Notebook notes export was reorganized. Notes used by one component are exported at the end of that component's section. Notes used by components in a single sub-system are included at the end of that sub-system's section. The remaining notes are exported at the end of the notebook. In addition, exported notes include a list of the components that reference the note.
• An issue was resolved in the Model Notebook export dialog that prevented Owner/Reviewer information from being excluded if it was present in the model.
• Model Notebook export was updated to include support for custom front-mater sections (such as Abstract and Intoduction) in the generated documentation. These optional sections can be inserted either before or after the table of contents.
• An issue was resolved in the SubSystem Integrator that caused incorrect components (with the same component number) to appear in the updated 2D views.
• An issue was resolved where resource imports could merge the contents of views.
• A "Take Ownership" option was added to the ASCII Import dialog to allow the owner of every imported component to be set to the current user.
• Support for the "reversed flow" flag (turbine, separator, etc.) was added hydraulic connection handling of the Sub-System Integrator.

Version 3.3.1 - Released 9/8/2009:

• The hydraulic component geometry editor tooltip and pop-up help items were updated to provide more detailed descriptions.
• An issue was resolved when selecting the Model Options node which in rare cases would cause the property view to display properties for a different component.
• The Control Function input argument dialog was updated to no longer allow specifying General Tables as input.
• The component names and descriptions properties were updated to include more appropriate pop-up help.

Version 3.3.0 - Released 8/21/2009:

• The plug-in was updated to allow a user to store and load multiple sets of initial conditions. Each of the stored initial condition sets will be saved with the model. The editor for managing model initial conditions can be accessed from either the right-click pop-up menu item of the model node or in the Model Options property view next to the Condition Sets property.
• The export logic for the Appendix K options was updated to ensure only lowercase values are written.

Version 3.2.0 - Released 7/17/2009:

• A model documentation utility has been added to the RELAP5 plug-in which provides the ability to generate a model notebook document for a given model. This document can be utilized by an analyst to help identify key portions of an input model. The notebook provides a thorough listing of both summary and detail information for each model component. The document includes a table of contents, and can be organized in two layout formats: one which closely resembles the structure of the Model Editor's Navigator, and another which groups model components by subsystem. Components are described using a combination of images, tables, statistics, reference links, and plots. Images associated with subsystems (views) and components (drawn representations of components) can be added to the model notebook. Tables are provided for tabular model data, and are collapsed by rows with similar values where appropriate. Additionally, some tables also have custom defined styles in order to provide a cohesive view of the data. Model components contain links to model notes for each of their documented attributes. Component attributes can be displayed in conjunction with any respective ownership or reviewer data. Any component properties which reference other notebook components will provide a link to the associated content next to the displayed property value. Many of the notebook components include a section that displays their ASCII representations. Options for attaching additional information to a model notebook (including a title page, classification indicator, header and footer), as well as controlling the content of the generated document (including options to toggle the export of User-Defined Numerics, component images, and component ASCII listings) are also provided.
• An issue was resolved that prevented the ASCII import routines from treating 5e-3 as .5e-3 on import though values '5-3' and '5e3' were imported correctly.
• An issue was resolved in "Update Sub-System" that caused imported components to appear multiple times in 2D Views.
• Signal variables are now sorted by name in the Navigator.
• An issue was resolved that prevented the Geometry, Initial Conditions, and Friction dialogs for hydraulic components from being properly constrained to the currently available screen space.
• An issue was resolved that prevented the 3D animation bean created via the "Copy View" feature of the 3D Hydraulic View from properly animating TDV components and components with CC numbers less than 100.
• A floating point round-off issue was resolved that caused the cells of smaller pipes to be difficult to select in hydraulic component dialogs.
• An issue was resolved where the Reactor Kinetics Control Rod Node dialog would not save edited values.
• An input connections editor was added to the properties list for trips and control blocks to allow setting these connections from the property view.
  

Version 3.1.3 - Released 5/29/2009:

• An issue was resolved that caused user defined materials to be duplicated when copying and pasting a heat structure from one model to another model that contained an identical material.
• A spacing issue was resolved in the Volume Initial Conditions dialog that caused the displayed T-FLAG options to appear garbled.
• Added a workaround to Control Block for the following CAFEAN core issue: An issue was resolved that prevented copying and pasting a component that has a connection from itself to itself.
• The pump homologous curve editing dialog was updated to include only those regime types (e.g. HAN vs BAN) and dependent variable units available for the selected curve.
• Resolved an issue where the plot file was not being copied correctly for restart jobs utilizing newer versions of RELAP5 3D.
• The copy paste logic was modified to resolve an issue which could prevent heat structure boundary hydraulic connections from being preserved when being pasted into a new model.
• An issue was resolved with the Pivot command in the 3D viewer that could cause errors when pivoting on the outlet of the last cell in a pipe.

Version 3.1.2 - Released 4/28/2009:

• A "Select Restart Components" menu item was added to the RELAP5 "Tools" pop-up menu. This menu can be used to add or remove components from the list of components that will be included in the exported restart deck.
• A feature was added to allow ASCII input models to retrieve resources from existing RELAP5 model (med) files. These resources can include views, user-defined numerics, and model documentation. This feature permits files to be easily exported to an ASCII format, edited and then reimported without losing these resources. This ASCII format includes a mapping of the numerics to the RELAP5 input along with a reference to the original med file. A special export resource option enables this functionality.
• Support was added for the PIB-based plot files created by newer versions of RELAP5 3D.
• A feature was added to support new functionality in RELAP5 3D executables. In the SNAP configuration, these executables can now be identified with the marker {3DN} at the start of the Additional Arguments field. When this marker is present, all subsequent jobs will properly differentiate between plot files and restart files. In addition, the executable will be invoked with the -stat option, allowing the generation of run-time statistics, needed to perform regression analysis in AVF.
• The geometry editor for the Annulus component was updated to allow the orientation to be reversed.
• An issue was resolved which prevented writing the mass flow initial condition data to the RELAP5 ASCII input file for valves created in the Model Editor. These components always output phase velocities regardless of the mode selected in the IC editor.
• An issue was resolved where the Branch External Junction editor was not restart editable.
• An issue was resolved where a delete card was inappropriately written to ASCII if a component created during restart editing was deleted.
• An issue was resolved which prevented importing heatstructure reflood trip data.
• An issue was resolved which prevented reading in input cards which contain no data. The cards will now replace previous cards with the same number.
• An import/export issue was resolved which resulted in the addition of extra SNAP comment tag characters.
• An issue was resolved which prevented re supplying some hydraulic components on restart import.
• The restart import logic was updated to properly handle input connections for control system components.
• An issue was resolved which prevented reading Single Junction form loss data cards CCCJ111.
• An issue was resolved which prevented exporting "Multi-Dimensional cards CCC7001 through CCC9999, Junction Initial Condition Data" with proper axial level ranges.
• The control system import logic was updated to handle importing the delete card on restart import.
• An issue was resolved which prevented junction signal variables from referencing Multi-Dim component junctions.
• An issue was resolved which caused duplicate additional case data to be written to the input file.
• The hydraulic component junction property editors were updated to display descriptive junction names in addition to the junction numbers.
• Hydraulic components were updated such that when changing the vertical orientation of a cell from an 90^o upward orientation to a 90^o downward orientation (and vice-versa), corresponding elevation change lengths will switch sign to reflect the change.
• Support was added for the 1CCCG00 General Heatstructure Data, W9/W10 left and right reflood lockout options.
• An issue was resolved which resulted in exporting invalid initial noncondensible mass fraction card numbers for some hydraulic components.

Version 3.1.1 - Released 3/23/2009:

• The RELAP5 plug-in was updated to support importing RELAP5 restart input files. The model node right-click menu now includes import restart options.
• The engineering units for plot variables were updated to support new minor edit variables available in RELAP5-3D.

Version 3.1.0 - Released 2/27/09:

• The RELAP5 plug-in was updated to support the RELAP3D version 2.6 input specification. These updates include:
  
• Noncondensible and Metal Species Mass Fractions
• Initial Mass Fraction for Each Metal Species.
• Appendix K Information
• Accident Phase Specification
• Additional Signal Variables
• Time-Dependent Volume initial conditions flag t = 7 and 9
• Time-Dependent Volume CCC0201 Additional quantities && CCC0302 Metal Mass Fractions
• Pump Index and Option new 9 word format. New pump degradation option.
• Support for Control Block type: CPLFNCTN - PVM executive input.
  
• The Axial Power/Heat Factors editor is now disabled when no Heatstructure cells with power sources are available.
• An issue was resolved where the Heatstructure power source editor was setting an incorrect enumerated value for control system power sources.
• The following signal variable descriptions were updated to match the definition provided in the user's manual: CPREFF,CPRHEAD,CPRM,CPRNRT,CPRTRQ,CPRVEL,GAMASP,VOLSTEM,QRAD
• The signal variable typecode selection dialog was updated to constrain the list of types available for the specified analysis code version.
• The heatstructure Left Surface Spacer Fraction export logic was updated to default to 1.0 when the data is not specified.
• The area change, volume momentum and choking model popup dialogs were updated to include appropriate titles and description labels.
• An issue was resolved which prevented selecting the target cell face when connecting to a Multi-Dim component.
• The Branch Junction editor was modified to facilitate selecting Multi-Dim component cells.
• An error message was added on import when a Jetmixer or Separator is the target of a connection from a junction only component.
• The drawn component "Orientation" menu has been renamed to "Drawn Orientation". Hydraulic components containing cells can no longer set their drawn orientation to up or down.
• An issue was resolved that prevented importing unix substitution variables on the 800 or 900 cards of a heatstructure.
• An issue was resolved in the Extra Deck data property which prevented deleting new line characters. Additionally, the word wrapping behavior (at 80 columns) was removed from the editor.
• An error message was added on check model to identify if a heastructure surface local boiling factor has been set to a negative number.
• An issue was resolved where setting a heatstructure surface boundary connection to a control block resulted in a 0 being written to ASCII.
• An issue was resolved which prevented exporting gap conductance data for heatstructures with only 1 axial cell.

Version 3.0.8 - Released 12/19/08:

• The export logic for the value of W9 on the Multiple Jun component geometry card was updated to properly handle the RELAP5 Mod3.3 and RELAP5-3D code versions.
• A Radiation Enclosure model check was added to test for invalid heat structures and invalid heat structure axial node numbers.
• A custom editor was added for the radiation enclosure heat structure reference axial node number.
• An issue was resolved that prevented exporting Radiation Enclosures with invalid heat structure axial node references.
• The Vessel renodalization logic for calculating liquid flow velocities on internal edges was updated.
• Error handling was added to report when an ASCII import results in too many unknown data cards.
• Support was added for the RELAP5-3D NORMVOL general table type (normalized volume versus normalized
  stem position or time).

Version 3.0.7 - Released 11/19/08:

• An issue was resolved that caused incorrect Tools and Export items to appear in the right-click pop-up menu of models that weren't the currently selected model in the Navigator.
• The import logic that creates user defined numerics when unix substitution was modified to preserve the capitalization.
• The ASCII export logic for heat structure surfaces was modified to resolve an error when the control block boundary condition is selected.
• The junction c-flag option 2 (Henry Fauske Choke Model) can be selected when editing a R5 3D v 2.3 model.
• The RELAP5 Post-processor unit conversion factors were updated to support the latest RELAP5 & RELAP5-3D versions.
• When importing initial conditions from a restart file, modified components now automatically update ASCII views, and property dialogs.

Version 3.0.6 - Released 10/24/08:

• Support was added for component sub-systems copy/paste, show ASCII, diff, and create/add to view operations.
• An issue was resolved that prevented pasting RELAP5 hydraulic components into an animation 2D View.
• An issue was resolved which prevented the Reactor Kinetics Flux Data Option and Burn-up Option from being properly imported.
• An issue was resolved which prevented the Reactor Kinetics RMBK detector data from being properly exported.
• An issue was resolved in the model report which caused the heat structure volume of cylindrical heat structures to be reported as Unknown if the inner radius of the structure was 0.0.
• An issue was resolved that caused some hydraulic system heights to be reported offset by the system primary cell reference offsets.
• An issue was resolved that caused hydraulic component drawings to behave erratically after using the Update Display Beans feature of the Animation plug-in.
• The ASCII export menu item was updated to recall the last exported file or last imported location, whichever is more recent.

Version 3.0.5 - Released 9/29/08:

• The selection entries for STDFCN control block editor were corrected.
• An issue was resolved which prevented RMBK detector data from exporting properly.
• An editor was added for the Reactor Kinetics RMBK poison flag attribute.
• The pop-up help descriptions were improved for the RMBK fluid density/void fraction, RMBK poison flag, and RMBK detector datum attributes.
• An issue was resolved which could result in cylindrical heatstructures reporting unknown volumes if the inner radius is set to 0.0.
• An issue was resolved where some hydraulic system heights were unecessarily adjusted by the system primary cell reference offset.
• An issue was resolved which prevented the Flux Data Option and Burnup Option from importing properly.
• The model report formatting logic was improved.

Version 3.0.4 - Released 9/23/08:

• An issue was resolved which prevented pasting RELAP5 2D drawn components to animation models.
• An issue was resolved which could prevented some .med files from opening properly.
• The typppwr samples were updated to be compatible with the new numerics based plug-in.

Version 3.0.3 - Released 9/19/08:

• The ASCII importer was updated to provide support for reading unix substitution variables prefixed by '-'.
• A series of UI updates were made to improve the Power History Editor.
• The Minor Edit Request selection editor sorting algorithm was updated.
• An issue was resolved which prevented relatively small legacy .med files from opening.
• The RELAP5 ASCII importer will now handle component descriptions which extend beyond the 80 character limit.
• An issue was resolved which prevented reconnecting user interactive variables in RELAP5-3D for variable names which ended with CON, ENG, ACT or MAS.
• An issue was resolved for spawned user-defined reals where parametric data would contain an unknown real entry.
• An issue was resolved in the Signal Variable Parameter editor which prevented the Property View from displaying appropriate attributes.
• An issue was resolved in Reactor Kinetics which produced errant behavior in the Neutronics Source editor.
• The Control Blocks were updated to export "null 0" when no connection exists for a required connection point.
• An issue was resolved for the Hydraulic Cell Geometry Editor which caused RELAP5 to improperly indicate errors when user-defined numerics were specified.
• The RELAP5 legacy .med importer was updated to properly handle restart conversions.
• The RELAP5 component Description Editor was updated and now includes a vertical line denoting the 80 character mark.
• A report generation issue was resolved which could cause the PDF generation tool to fail.

Version 3.0.0 - Released 9/4/08:

• The Attribute Level Documentation reference feature was added to the RELAP5 plug-in. Model Notes can now be attached directly to nearly any property in a RELAP5 model, from the global "Initial Time Value" property to the heat structure Reflood option.
• The "Comment" property was replaced by the Attribute Level Documentation feature included in SNAP 0.28.0. Any comments in existing models will be appended to the "Description" property.
• The RELAP5 plug-in was converted to use the new CAFEAN Numerics Library for sharing floating point values (reals) as well as some integers and tables(such as general tables). These shared values can be assigned to a property in the Properties View by pressing the numerics selection button to the right of the value. With this new system "Numerics" can now be copied/pasted between models along with the components that use them. Note: Models created with RELAP5 plug-in 2.5.7 and earlier will be converted to the new system the first time they're opened. This conversion includes User Defined Numerics, Views, Model Documents, etc.
• The units for the constant conductivity in material tables have been corrected.
• The Numerical Trips category was renamed to Variable Trips.
• The Branch component was modified to preserve the friction and initial conditions on the external junctions during a copy/paste operation.
• The RELAP5 Calculation Server plug-in was updated to ensure that when a RELAP5 job is deleted its 'fort.12' is deleted as well.
• Reactor Kinetics was modified to allow a value of 0.0 for the PSI property.
• The ASCII Import dialog "Unix Substitution" option was was added to the RELAP5 plug-in preferences and will be recalled each time the dialog is re-opened.
• The 1D component renodalization dialog was updated to indicate that the model has unsaved changes and to recall its previous size and location each time it is re-opened.
• The View Template export for Pipe was updated to include the Pivot option of each cell in the pipe.
• An issue was resolved that prevented heat structure initial temperatures from being initialized correctly when creating a new pipe-wall heatstructure from either a Pipe or an Annulus.
• An issue was resolved in the Power History Table dialog that prevented pasting time units into the time unit column.
• TRIPDELAY Control blocks were updated to enable selecting the reference Trip.

Version 2.5.7 - Released 6/20/08:

• An issue was resolved which prevented the retrieval of initial conditions for Multiple Junction components.
• An update was added to Reactor Kinetics which increases the efficiency of editing properties.
• An issue was resolved which prevented defining the initial vapor velocity values for multi-dim components.
• An issue was resolved which prevented the initial condition retrieval of Nodal Kinetics power.
• The Multi-Dimenstional component renodalization logic was updated to prevent errors when performing radial and azimuthal renodalization, and to prevent the loss of x direction cell lengths when merging axial levels.
• An issue was resolved which prevented signal variables from being created during a view template import.
• The logic used to locate the demultiplexer routine, r2dmx, was updated.

Version 2.5.5 - Released 5/29/08:

• Fixed an MED file read error that was introduced in Version 2.5.4.

Version 2.5.4 - Released 5/27/08:

• The ASCII labels exported for for CCFL "gas intercept" and "slope" were corrected for for the Pipe, Annulus, and Prizer components(CCC1401-1499). The export logic for the Multiple Junction component was also corrected to output the "gas intercept" and "slope" data in the proper order (CCC2KKM).
• The heatstructure signal variable HFTOT was removed from the the list of RELAP5-3D types. Additionally, the list of signal variables types is now specific to the code version and flavor of the current model. Previously, only a single list of values was provided for all of the code flavors/versions.
• The Homologous Pump Curve Editor was updated to reflect the RELAP5 regime types and descriptions provided in the user's manual.
• The Separator drawn component has been updated to provide proper scaling. The Separator right-click popup menu item "Scale Drawing" now allows horizontal and vertical scaling.
• The Pump property title "inertiaMoment" was changed to "Moment of Inertia". The description has been updated and now indicates that the value is word 6 on card series CCC0302-0304. Pump "Rated Density"
  description now indicates that the value is word 7 on card series CCC0302-0304.
• The Hydraulic component cell selection editor was updated to make the selection of cells more manageable. Hydraulic components selection is now displayed in the same dialog as the cell selection.
• The ASCII export logic was updated to resolve an issue which prevented data values from being written when the nodal kinetics card 3000008 fast time option was enabled.
• An issue was resolved which caused Branch components to lose the numbering on their external junctions when copied to a new model.
• A model check was added to ensure that more one hydraulic component contain unique component numbers.
• The drawing logic for RELAP5 Branches was updated to properly handle the view's pixels-per-meter property.
• An extraneous "Enable Large Controls" option was removed from Model Options. The expanded format option for control systems can be accessed by selecting on the appropriate Control System category node in the Navigator.

Version 2.5.3 - Released 5/7/08:

• Resolved an issue that caused edge data to become corrupt when renodalizing edges with a FA set to 0.0.
• Resolved an issue importing heat structure temperature initial conditions from restart, when the output file is in british units.
• An issue was resolved that could result in the animation of interactive RELAP5 jobs to appear as though no new data was available until the animation was reconnected.
• A model check was added to ensure that a valid nodal kinetics feedback type is selected.
• The Interactive variable name length is now constrained to 8 characters.
• The list of Hydraulic Components contained within the 2D view tool menu and toolbars will now update to include the available components appropriate for the selected code version.

Version 2.5.2 - Released 3/7/08:

• Multiple Junction components, Single volumes and Time dependent volume components were modified to prevent entering a name with more than 8 characters.
• The logic which controls retrieving initial conditions from a restart file was modified to exclude TRIP components.
• The Junction Face Placement options (CCC0113) are no longer displayed in RELAP5 models.
• An error message has been added when a junction-only component is missing its inlet or outlet connections.
• Heatstructures have been modified to report invalid hydraulic cell references or control system references as errors.
• A new dialog was added that opens when connecting to a crossflow connection on hydraulic component. This dialog allows the user to select the crossflow connection faces.
• An issue was resolved that prevented RN Species components from being copied and pasted.
• TRIP and Control block components are renumbered when pasted into a model that contains a different component numbering format.
• The time step control option has a default value of 7, when adding new time steps to a model. This enables the following features:
  1. Mass error analysis to control the time step between the minimum and maximum time step.
  2. The heat conduction/transfer time step is the same as the hydrodynamic time step.
  3. The heat conduction/transfer and hydrodynamics are coupled implicitly.
• The tool-tip help for the inside radius in the heatstructure completion dialog has been modified to indicate that the inside surface is the left boundary.
• The surface area flag for cylindrical and spherical heatstructures is initialized when creating new heat structures inside the model editor.
• An issue was resolved that prevented the initial temperature arrays for heatstructures from updating automatically when selecting a mesh reference heatstructure with a different radial nodalization.
• A new column was added to the heatstructure axial cells and surface boundary conditions dialog which includes the axial source data.

Version 2.5.1 - Released 1/31/08:

• An issue was resolved in the Detector Creation Editor which would sometimes fail to instantiate new detectors.
• The multiple junction connection dialog was modified to ensure that the junctions each have unique indexes.
• The heat structure renodalization logic has been modified to provide better support for reconnecting to a renodalized hydraulic component when the heat structure contains consecutive connections to the same hydraulic cell.
• The model editor reports an error when opening a MED file which contains an unsupported RELAP model version or code type.
• The pipe renodalization logic has been modified to preserve the edge friction data when splitting a cell.

Version 2.5.0 - Released 12/21/07:

• The undo/redo logic was updated to refresh the hydraulic component  editing dialogs for Geometry, Initial Conditions and Friction.  
  Additionally, changes made from these dialogs during restart editing are now recognized as restart changes.
• Hydraulic components have been modified to report an error message if the defined elevation change value is inconsistent with a volume's 
  inclination angle.
• An error is now reported when more than 99 minor edit requiests are specified inside a single model.
• Copy/paste functionality was added for the PUMP Homologous Curve Editor.
• The extra model data property inside model options has been modified to support exporting cards longer than 80 characters by continuing 
  the cards on multiple lines.
• Support was added for deleting components while editing a model for restart.
• An issue was resolved which caused importing external function message data to fail when message data was delimited by the @ character.
• Drawn separators were updated to now remember drawn orientation when saved.
• An issue was resolved where single volume components did not save the means by which the elevation change is defined.
• The ASCII import logic for pipe components was modified to resolve an issue when importing pipes with boron concentrations defined.
• Pump Relative Motor Torque data units are now set dimensionless.  Additionally, a problem was corrected where motor torque data exported to ASCII would exceed the number of available cards.
• Signal variables have been modified to display their name and parameter inside the Find Component dialog launched from a view.
• Interactive Control component initial value and animation feedback may now be specified during restart editing.
• The target component of control system connections created during restart editing are now included in an exported ASCII restart deck.
• RELAP5 documentation link references were added to support RELAP5 3D version 2.2.
• Hydraulic system names are now limited to 8 characters in length.
• RELAP5 extra model data can now be defined during a restart edit.
• Several dialogs were udated to ensure current edits are completed when the dialog is closed. This eliminates the need to hit the enter key prior to hitting the 'OK' or 'Close' button on the dialog.
• The model check and validation tests were updated to support the new Model Error Report dialog.

Version 2.4.0 - Released 10/23/07:

• The utility that generates 3D coordinates for hydraulic nodes inside a RELAP model was modified to allow the user to preserve existing azimuthal angles.
• The junction friction dialog was modified to only display the forward and reverse friction controller columns when the code is set to RELAP5 3.3.
• An issue was resolved that prevented opening of med files which contained feature plug-in data.
• The RELAP5 plug-in was updated to include custom documentation link support.  Each version of RELAP5 will now attempt to reference appropriate users manuals.  User's manuals for the each RELAP version can be specified by opening the model preferences dialog and selecting the "Documentation Files" property.   Selecting this property provides an editor which allows an analyst to define the location of the provided  documentation.
• Time Dependent Volumes were updated to report an error message if no table data is entered.
• The single junction ASCII output logic was modified to prevent exporting the 6 word format for Reynolds' junction friction loss when the current model flavor is not RELAP5.
• The ASCII import logic for the additional boundary condition cards on heat structure surfaces was modified to support all standard scientific notation types.
• The Branch ASCII output logic was modified to export additional loss coefficient data when Reynolds is enabled in a RELAP5 model.
• An issue was resolved where the Branch junctions editor would display incorrect junction numbering.
• An issue was resolved that caused the slope and gas interscept CCFL properties inside pipes, and pipe-style components to be reversed on  ASCII export.
• Support was added for the CCC29XX cards in Pipe and Annulus components which provides data on the curvature of each pipe cell. An editor was added to the geometry editor which edits the Pipe and  Annulus RELAP3D cell curvature data.
• An issue was resolved that prevented the file filter inside the ASCII import file selection dialog from functioning correctly.
• The RELAP5 original trip numbering format was corrected so that newly constructed Logical Trips start at 601 and Numerical Trips start at 401.
• The ASCII I/O logic for general tables was modified to add support for using user defined numerics in british models.

Version 2.3.4 - Released 8/24/07:

• Added a right-click popup plotting option which allows plotting table data in APTPlot from most RELAP5 table editors.  A plot selection dialog has been provided which defines the independent variable and associated dependent variables which are to be plotted.
• An issue was resolved that caused an error when retrieving initial condition data for a model with no heatstructures. The heatstructure temperature selection options are disabled in this case.
• An issue was resolved which caused the import of rotation matrix data to fail.
• Updated ASCII view descriptions for the Y-Length and Y-Flags data.
• The RELAP5 export file filter now locates files with the .i suffix.
• Resolved an issue which prevented pivoting the topmost cell of a pipe in the 3D hydraulic view.

Version 2.3.3 - Released 8/9/07:

• An editor was added to permit selection of individual components when updating initial conditions.
• A show usages popup item was added to material nodes in the navigator.  Selecting this feature provides a listing of those heatstuctures which use a given material.
• The control systems create view dialog is now always displayed when creating a control system view in a model where more than one system exists.
• The import restart data logic was updated to initialize the Timeof trip value.
• Initial values for control blocks and interactive variables are now properly imported from restart data.
• The valve import initial condition logic was updated.
• Support was added for Fission Product Decay type ANS 94-1.
• An issue was resolved that could prevent heat structure temperatures from initializing correctly when importing initial conditions.
• Edge Signals have been renamed to Junction Signals.

Version 2.3.1 - Released 6/30/07:

• The RELAP5 hydraulic component geometry dialogs have been updated to allow horizontal pivoting of cells. Cells located downstream from a pivoted hydraulic cell will also be affected until either another pivot is specified or no remaining hydraulic cells exist.  The pivot feature provides greater control  over the display of hydraulic components.

• An issue has been resolved that resulted in the incorrect  conversion of material conductivity and volume heat capacity values in materials when converting between SI and British units.
• An issue was resolved that caused the editor for fuel temperature reactor feedback coefficient to always display in SI units.
• An issue was resolved with the minor-edit requests and expanded  plot variable editors which could cause errors when deleting control systems.
• The minor edit request editor was modified to  exclude trips from the list of available signals.

Version 2.3.0 - Released 5/25/07:

• Added the ability to import initial conditions from a completed calculation.
• A feature was added to support both regular and expanded trip/control block numbering.  Selecting on the trip or control block navigator node provides a number format property.  Switching the format will cause each of the associated component numbers to update to reflect the selected format.  New RELAP5 models will default to the expanded numbering format. This option can be used to support legacy restart input files that were developed without the expanded number formats.
• An issue was resolved that prevented multiple junction components from redrawing properly inside a 2D view after editing its connections.
• Removed duplicated menu options which provided the ability to edit connected heatstructures from a multi-dim component.
• Resolved an issue where the check model test on a control block would fail if a max or min limit is specified without setting an initial value.
• Support was added for fine-tuned movement of graphical elements using the arrow keys.

Version 2.2.0 - Released 4/19/07:

• The material selection dialog inside the pipewall heatsructure completion dialog was modified to include a create button for adding  new materials.
• An issue was resolved with 1D renodalization that set new edge initial conditions, and flow areas to 0.0.
• The merge button in the 1D renodalization dialog was updated to ensure that it is only enabled when concurrent cells are selected.
• The fluid conditions editor for 1D hydraulic components has been modified to improve multi-cell editing and copy/paste features.
• An issue was revolved that prevented copying and pasting fluid condition types in the volume fluid condition dialog.
• The logic controlling the critical flow model input was upadated to properly handle the different versions of RELAP5.
• 3D Component renodalization was modified to preserve the hydraulic diameter of internal junctions.
• An issue that caused errors with the hydraulic connections when copying and pasting branches, pumps, accumulators, valves, time dependent junctions and single junctions was resolved.

Version 2.1.0 - Released 3/26/07:

• A force synchronized speed option was added to the Shaft component.
• A problem was corrected in the detector creation editor.
• An issue was resolved that prevented imported RELAP plot files from being plotted directly from an animation mask.
• Editor pop-up help information was updated in several locations.

Version 2.0.0 - Released 2/20/07:

• The Timestep control options can now be specifed using user-defined numerics.
• SingleVolume drawing code has been updated to resort to a default rendering size if the dimensions are too large to appear on the 2-D view.
• ASCII import routines have been updated to discard any non-ASCII characters in imported models.
• The ASCII viewer has been updated to provide a margin line indicating the RELAP5 80 column limit.
• The Import/Export file filters have been updated to always default to extension type ".i".
• The create view option on the control system node in the navigator now opens a view creation wizard that allows systems to be selected for insertion. Selected systems will be grouped together with a label and a rectangle surrounding them.
• Added support for RELAP5 parametric export.
• Model validation checks will now properly flag invalid pipe geometry.
• An issue was resolved which caused add/remove row operations to fail in the General Table data editor.
• An issue was resolved which caused add/remove row operations to fail in the TDJ variable request editor.
• Minor Edit variables are long longer deleted when pasting control variables.
• An issue was resolved where the Accumulator geometry type flag was not being exported.
• Heatstructure material references are no longer lost when copy/pasting heatstructures.
• An issue was resolved which prevented the RELAP5 plug-in from being used by the SNAP MATLAB plug-in.
• An issue was resolved which prevented UNIX substitution variables from importing/exporting correctly for sequential expansion values.
• The RELAP5 plug-in now supports three versions of the RELAP5 3D analysis code as well as RELAP5 Mod 3.3.  Any model complient with RELAP5 mod 3.3, RELAP 3D 2.2,  RELAP 3D 2.3, or RELAP 3D 2.4 can be imported into the ModelEditor.  The version number can be selected either in the import dialog, or in the batch import command.  Once imported into the model editor, a models version can be modified in the Model Options.
• The following issures were addressed for RELAP5-3D models:
  • Support has been provided for grouping RELAP5 components in the 2-D view.
  • An editor was included for editing Radionuclide Species data.
  • A format flag was added to Heatstructure surfaces which optionally forces the export of heat surface boundary data.
  • Updated the initial values for Reactor Kinetics properties.
  • Updates have been provided to support Reactor Kinetics CMFD/NEM planar ratio input.
  • Heatstructure I/O and editors have been updated to account for type 1 and type 2 radial geometry input.  Additionally, user-defined numerics can now be specified in the editing dialogs for Heatstructure radial geometry.
  • Added support for Multi-Dim component renodalization. 
  • Support has been provided for the edge signal variables:  FLENTHA and AFLOWGJ.
  • Support has been provided for the kinetics signal variables: INVKIN
  • Custom editors have been provided for selecting Multi-Dim hydraulic junctions from an edge variable.
  • The Multi-Dim hydraulic component now allows specification of CCFL models.
  • The RKRECPER kinetics signal variable now has proper I/O support.
  • An fix was provided to address an issue importing the Reactor Kinetics region void fraction input.
  • Exported hexagonal Reactor Kinetics geometry data no longer exceeds the 80 column limit.
  • A fix was added to support proper I/O of Separator maximum volume fractions.
  • I/O updates were provided to properly handle the Nodal Kinetics RBMK feedback type.
  • A fix was provided to properly handle Accumulator Reynolds coefficients.
  • Several minor issues were addressed in the Reactor Kinetic editing dialogs.