摘要
本文利用一体化的严重事故数据计算分析程序,研究核电厂发生大破口失水(LBLOCA)事故始发严重事故情况下裂变产物的释放、迁移、去除和最终在不同区域的分布等特征。假设核电厂具有双层安全壳设计并且安全壳保持完整性的情况下,计算最终向环境的释放源项。最后利用美国核管会(NRC)的NUREG-1465假设的壳内事故源项的释放份额计算环境释放源项的份额,并对结果进行比较。计算结果可以为应急设施评价源项的选取以及场外后果评价提供参考。
Sequence of LBLOCA of Nuclear Power Plant （NPP） is performed by application of integral calculation code, and the releasing, transport, removal and distribution about fission products are obtained. It is assumed that NPP has two-layers of containment and keeps intact during the severe accident, and finally the releasing of source term into the environment is also studied. Finally the source term provided by NUREG-1465 is compared with calculating results. The present results provide reference for the assessment source term of emergency facility and offsite consequence assessment.
出处
《核安全》
2015年第2期53-57,共5页
Nuclear Safety
基金
国家能源应用技术研究及工程示范项目子课题
课题编号NY20111002-1
