FRI3D WITH RISK SPECTRUM PSA

17th International Conference on Probabilistic Safety Assessment and Management & Asian Symposium on Risk Assessment and Management (PSAM17&ASRAM2024) 7-11 October, 2024, Sendai International Center, Sendai, Miyagi, Japan

Coupling Simulation Driven Fire Risk Analysis in 3D (FRI3D) with Probabilistic Safety Analysis using Risk Spectrum PSA Ramprasad Sampath (CENTROID LAB, United States), Steven Prescott (Idaho National Laboratory, United States)

Abstract: Current fire modeling practices require many manual steps and processes to transfer fire scenario information and data between fire logic databases, analytical methods such as Fire Dynamic Tools (FDT), zone model tools such as the Consolidated Model of Fire and Smoke Transport (CFAST), computational fluid dynamics tools like Fire Dynamics Simulator (FDS) and Probabilistic Safety Analysis tools software such as RiskSpectrum PSA (RSPSA). The Fire Risk Investigation in 3D (FRI3D) software was developed to help minimize these manual steps by automating as many steps as possible and linking the 3D spatial information with the PSA logic. RiskSpectrum PSA software is used by nuclear plants worldwide for performing various PSA tasks. However, for Fire PSA, external tools had to be used as a process involving manual integration of results. Initially, FRI3D was coupled directly with the existing fire logic input data to perform fire analysis. This paper presents a cost-effective and timely solution by providing seamless integration of 3D computational simulation-driven fire analysis using FRI3D into the RiskSpectrum PSA toolkit, where event/fault trees are updated with fire simulation-driven results simultaneously, providing advanced visualization capabilities by means of an example of a fire scenario being added into RiskSpectrum PSA for evaluation based on a generic compartment from a generic facility. Keywords: PSA, Risk Spectrum, Fire PRA, Fire PSA.