蒸汽发生器二次侧气溶胶沉积模型改进对安全壳旁通释放类的影响

Abstract

Abstract: Large frequency containment bypass (BP) accidents have big contributions to radiological consequences of a severe accident. MAAP4.0.4 is used to calculate source term of AP1000 BP release category, but it is incapable of accurate simulation for aerosol deposition in the complicated structure of secondary steam generator. With the basis of overseas experiments, aerosol deposition model is developed in this work, then the source code of MAAP4.0.4 is changed. Reassessment of BP release category is done, which indicates that, old model is conservative.

Key words: secondary aerosol deposition, model improvement, BP release category

CLC Number:

TL364

Huang Gaofeng. Influences of Improvement to Steam Generator’s Secondary Aerosol Deposition Model on BP Release Category[J].RADIATION PROTECTION, 2014, 34(2): 86-90.

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Influences of Improvement to Steam Generator’s Secondary Aerosol Deposition Model on BP Release Category

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