United States Nuclear Regulatory Commission - Protecting People and the Environment

Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) Version 8: Workspaces (NUREG/CR-7039, Volume 5)

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Publication Information

Manuscript Completed: March 2011
Date Published: June 2011

Prepared by:
C.L. Smith, S.T. Wood

Idaho National Laboratory
Battelle Energy Alliance
Idaho Falls, ID 83415

D. O'Neal, NRC Project Manager

NRC Job Code N6423

Office of Nuclear Regulatory Research

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The Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) Version 8 is a software application developed for performing a complete probabilistic risk assessment using a personal computer running the Microsoft Windows TM operating system. SAPHIRE 8 is funded by the U.S. Nuclear Regulatory Commission (NRC). The role of the Idaho National Laboratory (INL) in this project is that of software developer and tester. In older versions of SAPHIRE, the model creation and analysis functions were intermingled. However, in SAPHIRE 8, the act of creating a model has been separated from the analysis of that model in order to improve the quality of both the model (e.g., by avoiding inadvertent changes) and the analysis. Consequently, in SAPHIRE 8, the analysis of models is performed by using what are called Workspaces. Currently, there are Workspaces for three types of analyses: (1) the Events and Condition Assessment (ECA), (2) the NRC's Significance Determination Process (SDP), and (3) the General Analysis (GA) workspace. Workspaces for each type are created and saved separately from the base model which keeps the original database intact. Workspaces are independent of each other and modifications or calculations made within one workspace will not affect another. In addition, each workspace has a user interface and reports tailored for their intended uses.

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