Integrated PRA methodology to advance fire risk modeling for nuclear power plants

T. Sakurahara, S. A. Reihani, Z. Mohaghegh, M. Brandyberry, E. Kee, S. Rodgers, M. A. Billings, D. Johnson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the current progress in the development of an Integrated Probabilistic Risk Assessment (I-PRA) methodology, an integration of classical PRA with simulation techniques, for the analysis of fire risk at nuclear power plants (NPPs). I-PRA replaces fire-related logic in existing Fire PRA models with a Fire Simulation Module (FSM) that explicitly simulates the underlying physical phenomena and their dependencies and dynamic interactions. FSM includes three sub-modules: fire initiation, fire progression, and post-fire failures. The fire progression sub-module uses the Fire Dynamic Simulator (FDS) code, developed by the National Institute of Standards and Technology, and uncertainties in input parameters are propagated using Latin Hypercube Sampling. Large-scale, high-performance computers are utilized to overcome the excessive computational demand of FDS. The methodology is applied for one common NPP scenario (motor control center panel fire in a switchgear room). Global sensitivity analysis is conducted to rank the criticality of input parameters.

Original languageEnglish (US)
Title of host publicationSafety and Reliability of Complex Engineered Systems - Proceedings of the 25th European Safety and Reliability Conference, ESREL 2015
EditorsLuca Podofillini, Bruno Sudret, Božidar Stojadinović, Enrico Zio, Wolfgang Kröger
PublisherCRC Press/Balkema
Pages595-603
Number of pages9
ISBN (Print)9781138028791
DOIs
StatePublished - Jan 1 2015
Event25th European Safety and Reliability Conference, ESREL 2015 - Zurich, Swaziland
Duration: Sep 7 2015Sep 10 2015

Publication series

NameSafety and Reliability of Complex Engineered Systems - Proceedings of the 25th European Safety and Reliability Conference, ESREL 2015

Other

Other25th European Safety and Reliability Conference, ESREL 2015
CountrySwaziland
CityZurich
Period9/7/159/10/15

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality

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