核电厂严重事故下β射线对仪表损伤的定量化分析研究

对严重事故下β射线在核电厂内的分布特点进行了分析研究，在此基础上开展了严重事故下β射线作用在现场典型仪表时的辐照场分布计算，以及γ射线作用在同一对象中的辐照场分布计算。通过辐照能量等效的方法将β射线对典型仪表的损伤影响换算成一定比例的γ射线损伤影响，从而获得β射线对仪表损伤的定量化数据和不同试验材料对β射线的屏蔽性能数据，为严重事故下各类设备的辐照鉴定所使用的辐照剂量提供了定量的指标。该研究成果可直接应用于工程实践，用于指导严重事故仪表可用性分析、仪表鉴定以及仪表设计。 

Quantitative Analysis and Study of β Radiation Damage to Instruments in Severe Nuclear Power Plant Accidents

Based on the research and analysis of the β radiation distribution characteristics in the nuclear power plant within a severe accident, the radiation distribution is calculated when β radiation works on the typical instruments and when. γ radiation works on the same typical instruments. The β radiation harm influence is converted into a certain percentage of γ radiation through the way of energy equivalence, to obtain the β radiation damage quantitative data and the β radiation shielding performance data of different materials. At the same time, it provided the quantitative test radiation value in severe accident qualification. The research result can be used in engineering practice directly for conducting the instrumentation survivability analysis, equipment qualification and equipment design.