Coupling RAVEN to SAPHIRE for Performing Time Dependent Probabilistic Risk Assessment
Cost Risk Analysis Framework Tool (CRAFT) was recently developed by Idaho National Laboratory (INL) to perform economical risk analysis by combining physics, risk and cost information of components in a Nuclear Power Plant (NPP) that can be quickly deployable through the nuclear industry to evaluate the risk associated to capital projects and asset management [1]. In this framework, RAVEN is coupled with SAPHIRE to perform the time dependent risk/safety assessment of NPPs. Traditionally, the risk associated to the NPPs can be determined by classical Probabilistic Risk Assessment (PRA) tools, such as SAPHIRE, under the assumption that all failure rates are constant over time. In some circumstances, however, the assumption is rendered invalid since that the failure rate of a component may gradually change in a systematic way, for example, because of aging and degradation. In addition, recent data analysis in [2] has suggested decreasing values of failure rates for several important components of NPPs. A PRA that includes these components should employ the time-dependent failure rates in order to accurately estimate the risk at any given time. This time-dependent PRA is achieved by the coupling between RAVEN and SAPHIRE.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE Nuclear Energy
- DOE Contract Number:
- DE-AC07-05ID14517
- OSTI ID:
- 1605010
- Report Number(s):
- INL/CON-18-52334-Rev000
- Resource Relation:
- Conference: 2019 American Nuclear Society Annual Meeting, Minneapolis, MN, 06/09/2019 - 06/13/2019
- Country of Publication:
- United States
- Language:
- English
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