FIRE WATER PERFORMANCE AS A SEVERE ACCIDENT MANAGEMENT MEASURE IN THE STATION BLACKOUT ACCIDENT
Lungmen is an advanced boiling water reactor (ABWR) nuclear power plant (NPP) located in the northeastern of Taiwan. It incorporates several severe accident mitigating features, especially the fire water system. The fire water system is an alternating current (AC)-independent water addition (ACIWA) system, and can provide water directly into the RPV, or to the drywell spray header, or to the wetwell spray header. Base on Final safety Analysis Report (FSAR) of Lungmen NPP, loss of AC power (including SBO) sequences are the dominant sequences in the internal core damage frequency. Therefore, ACIWA is a useful mitigation system, especially in the station blackout (SBO) accident. The SBO accident is cited as reference case to evaluate the performance of the fire water system. MAAP5 code is used as a tool to evaluate the effectiveness of the fire water system. Based on MAAP5 analysis, the fire water system can cool down the core in the SBO accident after entering severe accident management guidelines (SAMGs). The fire water system can decrease the drywell pressure and avoid containment overpressure protection system (COPS) activation in the SBO accident after reactor pressure vessel (RPV) breach. The fire water system can be used as a mitigating measure, especially in the station blackout accident.
Fire Water Station blackout MAAP5
Te-Chuan Wang Lang-Chen Wang Show-Chyuan Chiang
Institute of Nuclear Energy Research (INER),Taiwan, R.O.C 1000, Wunhua Rd., Jiaan Village, Longtan T Taiwan Power Company (TPC),Taiwan, R.O.C No. 242, Sec. 3 Roosevelt Rd., Zhongzheng District, Taipei
国际会议
上海
英文
40-63
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）