中美1000MW等级核电机组可靠性的统计分析

Statistic Analysis on Reliability of 1000 MW Class Nuclear Power Units in China and America

提出了核电机组可靠性的统计分析方法,介绍了核电机组5个可靠性特征量的意义及计算公式。提出了核电机组可靠性特征量加权算术平均值,给出了2008—2022年中国与美国1000 MW等级核电机组可靠性的统计结果、可靠性特征量加权算术平均值的计算结果,以及可靠性特征量的变化曲线。结果表明:中国1000 MW等级核电机组的可用性、可靠性与维修性整体上呈提高趋势,2008—2022年中国1000 MW等级核电机组的等效可用系数比美国高1.81个百分点。

The method of statistical analysis for the reliability of nuclear power units was proposed,and the meaning and computational formula for five reliability characteristic quantities of nuclear power units were introduced.The weighted arithmetic means of reliability characteristic quantities of nuclear power units were presented,while following items of 1000 MW class nuclear power units in China and America from 2008 to 2022 were given,namely the statistic results of reliability,the calculation results of weighted arithmetic means of reliability characteristic quantities,and the change curves of reliability characteristic quantities.Results show that,for 1000 MW class nuclear power units in China,the availability,reliability and maintainability in general,all present a trend of increase,while the equivalent availability factor of 1000 MW class nuclear power units from 2008 to 2022 in China is 1.81 percentage points higher than that in America.