ESTABLISHMENT OF A SEVERE ACCIDENT MITIGATION STRATEGY FOR AN SBO AT WOLSONG UNIT 1 NUCLEAR POWER PLANT

Nuclear Engineering and Technology

卷:45

DONGHA KIM¹  SUNGMIN KIM² 

[1] Korea Atomic Energy Research Institute., 111 989-gil Daeduck-daero Yuseong-gu, Daejeon, 305-343, Korea;

[2] Korea Hydro and Nuclear Power Co., Ltd., 70 1312-gil Yuseong-daero Yuseong-gu, Daejeon, 305-343, Korea;

关键词: CANDU;    ISAAC;    SBO;    Class IV;    PHTS;    LOCA;    ECC;    RB;   

DOI  :  10.5516/NET.03.2012.057

来源: DOAJ

【 摘 要 】

During a station blackout (SBO), the initiating event is a loss of Class IV and Class III power, causing the loss of the pumps, used in systems such as the primary heat transporting system (PHTS), moderator cooling, shield cooling, steam generator feed water, and re-circulating cooling water. The reference case of the SBO case does not credit any of these active heat sinks, but only relies on the passive heat sinks, particularly the initial water inventories of the PHTS, moderator, steam generator secondary side, end shields, and reactor vault. The reference analysis is followed by a series of sensitivity cases assuming certain system availabilities, in order to assess their mitigating effects. This paper also establishes the strategies to mitigate SBO accidents. Current studies and strategies use the computer code of the Integrated Severe Accident Analysis Code (ISAAC) for Wolsong plants. The analysis results demonstrate that appropriate strategies to mitigate SBO accidents are established and, in addition, the symptoms of the SBO processes are understood.

【 授权许可】

Unknown