SAPHIRE @ the Idaho National Laboratory


SAPHIRE is the premier probabilistic risk and reliability tool. The acronym SAPHIRE stands for "Systems Analysis Programs for Hands-on Integrated Reliability Evaluations."

1987 Version 1 of the code called IRRAS (now known as SAPHIRE) introduced an innovative way to draw, edit, and analyze graphical fault trees. The U.S. Nuclear Regulatory Commission was the originator and sponsor of IRRAS (and now SAPHIRE).
1989 Version 2 is released incorporating the ability to draw, edit, and analyze graphical event trees.
1990 Analysis improvements to IRRAS led to the release of Version 4 and the formation of the IRRAS Users Group.
1992 Creation of 32-bit IRRAS, Version 5, resulted in an order-of-magnitude decrease in analysis time. New features included: end state analysis; fire, flood, and seismic modules; rule-base cut set processing; and rule-based fault tree to event tree linking.
1997 SAPHIRE for Windows, version 6.x, is released. Use of a Windows user-inferface makes SAPHIRE easy to learn. The new "plug-in" feature allows analysts to expand on the built-in probability calculations.
1999 SAPHIRE for Windows, version 7.x, is released. Enhancements are made to the event tree "linking rules" and to the use of dual language capability inside the SAPHIRE database
2004 SAPHIRE for Windows, version 8.x, is started. This version embodies a complete redesign of the user interface with the goal of reducing the complexity while losing none of SAPHIRE's functionality.
2010 SAPHIRE for Windows, version 8.x, is released for US Government and approved contractor use.
2012 SAPHIRE for Windows, version 8.x, is released for use domestically and internationally with approved non-disclosure agreement with the US Nuclear Regulatory Commission.

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