Standard Number: NB/T 20425-2017(NB/T20425-2017)
Chinese:核电厂内部水淹概率安全评价开发方法
English:Development of a methodology for safety evaluation of the probability of internal flooding in nuclear power plants
Effective Date:2017-07-01
Standard Applicability:This standard specifies the development method of probabilistic safety assessment (PSA) for internal flooding level 1 in nuclear power plants, and provides the analysis process and analysis points of internal flooding level 1 PSA. This standard applies to the PSA for internal flooding of pressurized water reactor (PWR) nuclear power plant under power operation condition, and also applies to the PSA for internal flooding of PWR nuclear power plant under shutdown condition after taking into account the characteristics of shutdown condition and making appropriate corrections. other types of nuclear power plants can refer to the implementation.
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