[2P06-09] Safety Evaluation of LWR 2

[2P07] Application of a fire zone model for compartment fires under mechanically ventilated conditions

-(2) Prediction on fire behavior under multi-fire sources using BRI2002-

*Junghoon Ji¹, Koji Tasaka¹, Koji Shirai¹, Toshiko Udagawa², Shigeru Yamada³ (1. Central Research Institute of Electric Power Industry, 2. WDB Co., Ltd., 3. FUJITA CORPORATION)

Keywords:compartment fire, zone model, BRI2002, multi-fire sources, zone temperature

In the case of assuming a fire PRA caused by an earthquake, a complicated fire development scenario where a fire by a single fire source simultaneously occurs in a plurality of different sections is also assumed.In this report, two-layer zone model BRI2002 incorporating fan curve model was modified so that two or more fire sources can be set, and analysis and study were conducted on fires of multiple sections and single fire sources. As a result, it has been found that the zone temperature and oxygen concentration in the section can be calculated.