Evaluation of Emergency Planning Zone for EPR Nuclear Power Unit in TSNPP
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摘要: 采用事故后果分析程序(MACCS2)对台山核电厂欧洲压水堆(EPR)机组应急计划区范围进行评估。气象数据采用厂址气象塔2007年9月至2008年8月逐时气象数据,源项和释放特征等数据采用二级概率安全分析(PSA)研究成果。对台山核电厂应急计划进行评估的结果表明,台山核电厂应急计划区半径应小于0.5 km,这与EPR的设计目标是一致。但根据国家法律法规要求,结合厂址特征,推荐台山核电厂应急计划区内区半径为4 km,外区半径为7 km。Abstract: The Emergency Planning Zone（EPZ） of EPR unit was evaluated using the MELCORE Accident Consequence Code System 2（MACCS2） developed by Sandia National Laboratory.Hourly meteorological data were collected from Sep 2007 to Aug 2008 by the site meteorological monitoring system.The accident source term including the core inventory and release characteristics were based on EPR PSA Level 2.Based on NUREG-0396 and GB/T 17680.1-2008,this paper put forward the quantitative safety criteria.The effective dose and thyroid dose were calculated.By comparing the result to the protective guide and safety criteria,a radius of 0.5 km was evaluated for EPR unit in TSNPP.We suggested that a radius of 4 km is the reasonable conservative value of interior EPZ for TSNPP and for exterior EPZ the value is 7km.
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Key words:
- Nuclear power plant /
- Plume emergency planning zone /
- Evaluation
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