【美国《掺安全》1981年第2期第229页报道】分析设备故障方面的资料可以看出,在轻水堆中,由于阀门工作不正常导致停堆的比例约为19％。1976年电力研究所的调查指出:发生故障就会导致停堆或降低功率的阀门,约占整个电站阀门总数的5％到10％。表1和2列出了从1972年12月到1979年3月期间经常造成正常停堆和事故保护停堆的几种阀门的情况。本文重点研究了六种 [United States “Mixed with Safety” No. 2, 1981, p. 229) Analyzing data on equipment failures shows that in light water reactors, shutdown rates are about 19% due to improper valve operation. A 1976 survey by the Electric Power Research Institute found that a valve that fails or causes power to shut down or to reduce power accounts for about 5% to 10% of the total plant valve population. Tables 1 and 2 show a few examples of valves that often caused normal shutdown and accidental shutdown of the reactor from December 1972 to March 1979. This article focuses on six