华龙一号安全壳厂房排放源项估算模式的构建思考

Consideration on constructing mathematic models about release source terms from containment building of HPR1000

研究了M310机组及AP1000的安全壳厂房的气载流出物排放源项模式,分析了华龙一号安全壳厂房空乞净化系统、小扫气运行和大扫气运行及相关系统的运行方式,结合相似电厂的运行经验,给出了华龙一号安全壳厂房气态流出物排放源项的数学模式的构建方案及过程,依据虚拟电厂设计参数和经验参数,计算了三种模式下的排放源项估算结果,分析了不同模式的估算结果的差异原因,给出了模式选取建议和其他合理化建议。

The models regarding gaseous effluent source terms from the containment building of M310 and AP1000 units were studied in this paper. The operational modes of containment cleanup System, small sweep, large purge, and other relevant systems of HPR1000 were analyzed. Combining with the operational experiences from other similar plants, the structure schemes and developing procedures of the mathematical model about the gaseous radioactive release source term from the containment building of HPR1000 were provided. The results of release source terms for three modes were estimated according to the design and experience parameters of the virtual plant. The reasons for the differences of the estimated results by different modes were analyzed. Finally the suggestions on model selection were put forward.