拉格朗日烟团模型在核事故早期应急决策中的应用  

Application of Langrangian puff model in the early stage of a nuclear emergency

作　　者：余琦[1] 刘原中[1] 

机构地区：[1]清华大学核能技术设计研究院,北京100084

出　　处：《清华大学学报（自然科学版）》2000年第12期6-9,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家"九五"科技攻关项目! (85 - 2 13- 0 5 - 0 1)

摘　　要：研究干预水平和气象条件对核事故早期应急决策的影响。利用 L agrangian烟团模型 RIMPUFF预测 PWR6事故时相应于稳定和不稳定气象条件下的剂量分布 ;考虑了由国家核安全局和国家环保局联合发布的安全导则《核事故辐射应急时对公众防护的干预原则和水平》(HAF0 70 3/NEPA90 0 2 )中的干预水平和 IAEA新推荐的干预水平。PWR6事故条件下 ,采用各种实时气象条件的计算结果表明 ,隐蔽和服稳定碘的区域的半径为 10 km范围 ,撤离区的半径为 5 km。两种干预水平在应急行动范围方面的差异主要体现在隐蔽区域上 ,后者给出的隐蔽区域比前者给出的区域小很多。The effect of changes of intervention levels and meteorological conditions on the early emergency countermeasures is analysed for nuclear powerplant emergencies. A Lagrangian puff model RIMPUFF is used to predict dose distributions under stable and unstable meteorological conditions. The release scenario for PWR6 is used as an example to determine emergency areas for different intervention levels. The prediction results show that the evacuation area radius is 5km and the radii for sheltering and intake of stable iodine are both 10km. The difference between the emergency areas determined by the intervention levels given in HAF0703/NEPA9002 and IAEA safety series No.109 is only in the sheltering area which is much smaller using the IAEA guidelines.

关 键 词：核事故 早期应急防护措施 干预水平 气象条件 LAGRANGIAN 烟团模型 早期应急决策 PWR6源项 辐射 

分 类 号：TL732[核科学技术—辐射防护及环境保护] X16[环境科学与工程—环境科学]