CX-020061: Integrated Fire Probabilistic Risk Assessment (PRA) Modeling in Support of Operational Efficiency, Design and Innovative Risk-Informed Methodologies in the Nuclear Industry

The South Texas Project (STP) Nuclear Operating Company, in collaboration with Illinois Fire Service Institute (IFSI), proposes to develop and implement advanced Integrated Probabilistic Risk Assessment (I-PRA) fire modeling techniques that will remove existing conservatism and lead to realistic Fire PRAs that can be used by the nuclear industry. This project will provide a methodology and computational code that improves Fire PRAs of the existing fleet. Objectives of the project include: developing and incorporating an efficient fire scenario screening method by adapting the RoverD method (Phase I), implementing an I-PRA methodological framework to perform advanced simulation and modeling (Phase II), and performing experimental validation of fire brigade performance modeling (Phase III). Based on the results from Phase I and Phase II, a fire scenario for Fire Brigade response in an Auxiliary Building Switchgear compartment at STP will be designed as an experiment at the IFSI.