Analysis and Practice of"Desensitization"of SPV in Nuclear Power Plants
For SPV in the field of nuclear power plant I&C,this paper determines its definition and division criteria,ana-lyzes and identifies SPV using fault tree method and probability analysis method,and demonstrates feasibility and necessi-ty of"desensitization"through quantitative analysis. Based on nature and characteristics of SPV,hardware circuit modifi-cations and software logic modifications are carried out to eliminate them. Moreover,the modified software and hardware are tested and verified to confirm their functional integrity and robustness,in order to improve the reliability of the equip-ment and the safety of the unit.
nuclear power plantsingle point vulnerabilitydesensitization
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