External Events Analysis for LWRS/RISMC Project: Methodology Development and Early Demonstration
- Idaho National Laboratory, P.O. Box 1625, Idaho Falls, ID, 83415-3860 (United States)
The ultimate scope of Industrial Application no.2 (IA) of the LWRS/RISMC project is a realistic simulation of natural external hazards that impose threat to a NPP. This scope requires the development of a methodology and of a qualified set of tools able to perform advanced risk-informed safety analysis. In particular the methodology should be able to combine results from seismic, flooding and thermal-hydraulic (TH) deterministic calculations with dynamic PRA. A so-called Risk Informed Margin Management (RIMM) approach is being used to represent meaningful (i.e., realistic facility representation and simulation) event scenarios and consequences by linking probabilistic simulations to external events physics. Calculations performed so far demonstrated the capabilities of the proposed methodology in analyzing multi-hazards generated by External Events. The sample application described in this paper allowed identifying the main issues (code interfaces, computational and human resources needed, simplifications) connected to such kind of advanced analysis. The next steps will be the risk-informed earthquakes and flooding analysis of a system of a generic PWR.
- OSTI ID:
- 22991956
- Journal Information:
- Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Journal Issue: 1 Vol. 114; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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