CAJ | 학술논문

次临界或低功率启动工况下控制棒组失控抽出事故定义为RCC-P Ⅱ类事故，它一直是核电厂安全分析的极限事故之一。本文以典型三环路压水堆为对象，分析了热停堆状态下不同停堆棒组组合对该事故DNBR裕量的影响。研究表明，通过优化热停堆状态下停堆棒组组合，在保证足够的停堆深度下，可进一步提高典型三环路压水堆核电厂在该事故下的DNBR裕量。
차림계혹저공솔계동공황하공제봉조실공추출사고정의위RCC-P Ⅱ류사고，타일직시핵전엄안전분석적겁한사고지일。본문이전형삼배로압수퇴위대상，분석료열정퇴상태하불동정퇴봉조조합대해사고DNBR유량적영향。연구표명，통과우화열정퇴상태하정퇴봉조조합，재보증족구적정퇴심도하，가진일보제고전형삼배로압수퇴핵전엄재해사고하적DNBR유량。
Uncontrolled withdrawal of rod cluster control assembly bank from a subcritical or low power startup condition is classified as a RCC-P condition Ⅱ event and always one of the most limiting events in the safety analysis for the nuclear power plant . Based on typical three-loop PWR , the effects of different initial arrangements of the shutdown banks at the hot-shutdown state on the DNBR margin were studied . The results show that the DNBR margin is further increased by optimizing the initial arrangements of the shutdow n banks at the hot-shutdow n state in order to assure the enough shutdow n margins .