What’s New

Reliability Workbench 13.0.2

The new features in Reliability Workbench 13.0.2 are:

  • The FMECA module now supports function nets and failure nets as defined in standards such as VDA 4.
  • The FMECA module now calculates failure rates and failure metrics in accordance with ISO 26262.
  • An extended IEC61508 dormancy model has been added allowing users to model dormancy averages to high accuracy using the full exponential representation of dormant failures.
  • A new IEC61508 FT failure model has been added to the RBD and fault tree modules. This model is an extension of the IEC61508 failure model and allows for function tests to be incorporated into the analysis.
  • FMECA IEC61508 detection and coverage percentages are now calculated at system level.
  • The mouse wheel and shift key may now be used to scroll diagrams horizontally.
  • The Telcordia Prediction Standard has been updated to issue 4 (March 2016).
  • The Siemens standards SN 29500-15 and SN 29500-1 H1 have been updated to the 2016-11 edition.
  • The drawing of large diagram reports has been significantly speeded-up.
  • A feature has been added allowing reports to be displayed in full screen mode.
  • Prediction to FMECA copy and paste now transfers the reference ID and analyst fields.
  • FMECA function blocks now display function text in the project tree control if the description text is null.
  • FMECA Criticality Matrix plots may now display Occurrence Ranking vs Severity rather than Criticality vs Severity. Use the appropriate option in the Plot Options dialog.
  • Event tree page flags may now be set or cleared for all branches in the selected column using options on the Diagram menu.
  • Editing the properties of a CCF Model now sets the calculation results out of date.
  • Reset selected default color button now works for fault tree and event tree labels in the project properties dialog.
  • Event tree diagram scroll bars are now hidden when in diagram/grid right window mode.
  • For fault tree initiator AND gates with multiple enabler inputs frequency-only cut-offs are now only applied when the final input has been calculated.
  • FMECA project results may now be viewed by selecting the FMECA results icon.
  • Priority AND gates now automatically assign the appropriate sequence flags to input gates as well as events.
  • Frequencies for sequenced events in a fault tree (First, Second etc.) associated with the ‘Time at Risk’ model are now calculated based on the time at risk rather than the system lifetime.
  • Fault tree and event tree now has an option to export results displayed in the results summary to a CSV file.
  • Fault tree gates and event tree columns now display frequency units if the appropriate option is set in the View tab of the Project Options dialog.
  • Fault and event tree confidence plots now show the pdf rather than the interval probability.
  • An option has been added to the fault tree special functions menu to allow the deletion of all unattached primary events.
  • The base 2 failure rates for GJB299C-A prediction switches now respond to unit changes.
  • Users may now specify failure rate units in the allocation module.
  • Failure rates may now be transferred from other modules to linked allocation blocks.
  • Prediction and FMECA block hierarchy structures may now be automatically converted to an allocation structure.
  • Allocation blocks may now be linked to objects in other modules using the data link facility. This allows prediction methods to be used to verify allocated rates.
  • Allocations block properties have been extended to include part number, reference ID, LCN, analyst, hyperlink and notes fields.
  • An extended graded allocation model has been added to the Reliability Allocation module. This model allows users to specify floating point grading factors and a grading exponent. This is particularly useful for basing allocation on cost optimization.
  • An ‘Exclude’ option has been added to the fault and event tree primary event sequencing property. Setting the ‘Exclude’ option will ensure that the event is excluded from sequencing calculations. The exclude option is identified in the diagram with a ‘X’ symbol.
  • Barlow-Proschan and Sequential importance measures are now displayed for event tree consequences as well as fault tree gates
  • Users may now force both unavailability and frequency cut-offs to be applied for fault and event trees. The ‘Both’ option requires the cut set unavailability and frequency to be below the appropriate cut-off before the cut set is discarded.
  • Event tree consequence cut sets may now be traced through event tree branches Markov module plots have been extended to include failure frequency, conditional failure intensity, reliability and unreliability.
  • Exclusive OR gates have now been extended to allow > 2 inputs Offsets (manually shifted gate positions) are now removed when copying fault tree structures from a library to a project.
  • New methods have been added to the dll allowing users to obtain the table name and row index of the currently selected object (for plugin apps).
  • Users may now optionally remove phonetics when importing from an Excel spreadsheet. The appropriate option needs to be set in the Application Options dialog, Import tab.
  • RBD, fault tree and event tree label tables have now been enabled in the grid control.
  • The last grid layout displayed is now remembered between program sessions.
  • The Siemens standard now populates the external failure rate field when importing a part from the parts library.
  • The licensing component has verified support for Windows Server 2016.

ISO 26262 Certification

Our Reliability Workbench FaultTree+ and FMECA modules have been tested and certified by SGS-TÜV as suitable for safety analyses according to ISO26262.

Reliability Workbench ISO 26262 Certificate

Reliability Workbench 13.0.1

The new features in Reliability Workbench 13.0.1 are:

  • Fault tree gates may now be associated with an anchored label. Anchored labels maintain an automatic partition to prevent overlapping with adjacent gates when the tree is automatically re-drawn.
  • Fault tree, RBD and Markov diagrams may now be vertically shifted and re-scaled with the mouse wheel.
  • Fault tree gates with modularization ‘forced on’ may now have a quantity vote number specified as well as a quantity.
  • The user may now select GJB component sub categories when creating derating definitions.
  • Grid filter options now include an advanced WHERE clause facility.
  • Converting FMECA structures to a fault tree structure now transfers quantities to gates (but not events).

Reliability Workbench 13.0

The new features in Reliability Workbench 13.0 are:

  • The FIDES Prediction standard has been added to the Prediction Module.
  • Mil217Plus has been upgraded to version 2015.
  • The NPRD library has been upgraded to NPRD-2016.
  • The FMD 2016 failure modes library has been added to the NPRD parts library. FMECA blocks created from the NPRD library will now also have their failure modes automatically created where appropriate.
  • An option has been added to the Event Tree Special Functions menu allowing users to delete all unattached secondary event trees.
  • IEC 61508 failure models have been extended to allow for high demand system frequencies (PFH values) to exclude detected failures.
  • Text quality for print preview of diagrams in 64-bit versions has been improved.
  • Database ‘integer’ import fields may now be matched to ‘double’ application fields.
  • Tool tips have been added to list controls in the Grid Layouts dialog (General tab) to identify the field ID.
  • Gates and events attached to event tree branches as partial failures are now reported as dependencies in gate and event reports. These dependency calculations for reports may be time-consuming. An option has been added to the Report Options dialog to disable these calculations.
  • Weibull eta parameters are now only shown in the fault tree diagram display if non-zero. Also Weibull beta parameters are now shown.
  • Conditional failure intensity has been added to RBD and FT time profiles.
  • Using the data link form to assign a link between two objects now copies the source description if the target description is blank.
  • Data links are now created for failure models when copying fault tree and RBD structures from a library to a project.
  • Fault tree modularization has been made more efficient for projects that contain disconnected fault trees.
  • The initial load of the parts library has been speeded up.
  • Sensitivity calculations may now be performed for IEC 61508 dormancy averaging. This applies when the dormant failure model is set to IEC 61508 in the project options dialog..
  • The SN29500 prediction standard has been updated to edition 2015-04.