Fire Safety Evaluation for HPSI Pump Room Using CDF Code

Abstract

Although fire accidents in nuclear power plants rarely occurs, it may cause a stoppage of a nuclear reactor and damage of safety devices and cause massive damage such as radiation leakage. Therefore, nuclear power plants require specialized fire safety design conditions. In this study, CFD code is used to predict fire behavior and verify safety for HPSI (High Pressure Safety Injection) Pump Room passing through cables of important pump among various pump rooms of nuclear power plant. Fire simulation was performed based on NUREG-1934, NUREG / CR-6850, etc. using Fire Dynamics Simulator (FDS) as a fire model for fire safety evaluation of HPSI Pump Room. As a result, the fire damper closing time of each exhaust was checked and the damage time of the cable was evaluated. This will provide information for safety assessment and assurance of nuclear power plants. Keywords: HPSI Pump Room, Fire Dynamics Simulator, Fire Damper, Cable Damage