原子能科学技术
原子能科學技術
원자능과학기술
ATOMIC ENERGY SCIENCE AND TECHNOLOGY
2013年
9期
1565-1571
,共7页
张彦招%张帆%赵新文%郑映峰
張彥招%張帆%趙新文%鄭映峰
장언초%장범%조신문%정영봉
船用堆%大破口失水事故%裂变产物%源项
船用堆%大破口失水事故%裂變產物%源項
선용퇴%대파구실수사고%렬변산물%원항
ship reactor%large break loss of coolant accident%radioactive fission prod-uct%source term
以某船用压水堆为研究对象,采用M ELCOR程序建立事故分析模型,研究大破口失水事故叠加全船断电严重事故下放射性裂变产物的行为,着重分析了惰性气体和CsI的释放、迁移、滞留特点及在堆舱内的分布。结果表明,83.12%惰性气体从堆芯释放出来,并主要存在于堆舱的气空间;83.08%的CsI从堆芯释放出来,其中,72.66%滞留在堆坑熔融物与一回路内,27.34%释放到堆舱内,并主要溶解于舱底水池中。本文分析结果可为舱室剂量评估、核应急管理提供依据。
以某船用壓水堆為研究對象,採用M ELCOR程序建立事故分析模型,研究大破口失水事故疊加全船斷電嚴重事故下放射性裂變產物的行為,著重分析瞭惰性氣體和CsI的釋放、遷移、滯留特點及在堆艙內的分佈。結果錶明,83.12%惰性氣體從堆芯釋放齣來,併主要存在于堆艙的氣空間;83.08%的CsI從堆芯釋放齣來,其中,72.66%滯留在堆坑鎔融物與一迴路內,27.34%釋放到堆艙內,併主要溶解于艙底水池中。本文分析結果可為艙室劑量評估、覈應急管理提供依據。
이모선용압수퇴위연구대상,채용M ELCOR정서건립사고분석모형,연구대파구실수사고첩가전선단전엄중사고하방사성렬변산물적행위,착중분석료타성기체화CsI적석방、천이、체류특점급재퇴창내적분포。결과표명,83.12%타성기체종퇴심석방출래,병주요존재우퇴창적기공간;83.08%적CsI종퇴심석방출래,기중,72.66%체류재퇴갱용융물여일회로내,27.34%석방도퇴창내,병주요용해우창저수지중。본문분석결과가위창실제량평고、핵응급관리제공의거。
Using MELCOR code ,the accident analysis model was established for a ship reactor .The behaviors of radioactive fission products were analyzed in the case of severe accident induced by large break loss of coolant accident coincident with ship blackout . The research mainly focused on the behaviors of release ,transport ,retention and the final distribution of inert gas and CsI . T he results show that 83.12% of inert gas releases from the core , and the most of inert gas exists in the containment . About 83.08% of CsI release from the core ,72.66% of w hich is detained in the debris and the primary system ,and 27.34% releases into the containment . The results can give a reference for the evaluation of cabin dose and nuclear emergency management .