Fire Risk Assessment and Management in Nuclear Power Plants

抄録

A methodology for the assessment of risk due to fires in nuclear power plants is presented. This methodology integrates the important elements of a comprehensive approach, namely: 1. engineering knowledge of the response of the plant when a specified set of components is damaged; 2. statistical analysis of the available data regarding the occurrence of fires and their detection and suppression; 3. physical modeling of the thermal hazards (temperatures and heat fluxes) in a compartment fire; and 4. probabilistic modeling of the competition between fire growth time and detection and suppression time, as well as the propagation of uncertainties through the COMPBRN code, which calculates the thermal hazards. The use of the methodology in risk management is also discussed through an example.