原子力発電所におけるケーブル火災のFDS解析

抄録

In this study, a cable fire in nuclear power plant room was analyzed by FDS (Fire Dynamics Simulator). To evaluate combustion character of electrical cable was important in terms of safety assessment of nuclear power plant. However, experiment at evaluation was difficult due to scale and costs. FDS analysis software apply two fire model (one model was based on heat released rate: HRR model, the other was based on chemical reaction: CR model). HRR model and CR model were prepared by combustion tests by cone-calorie heater machine. FDS analysis of cable fire at switchgear room was conducted. The numerical result of FDS analysis showed reasonable fire spreading at CR model. It is because CR model could take oxygen concentration into consideration.