Braidwood And in some cases it came, or it did in Braidwood, from I think they had leakage in some of their vacuum valves on the secondary side, on the primary side of the plant.

在一些情况中，或者在，我想他们得到了泄漏在一些,他们的真空管里在第二面，在电站的第一面。

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The metal diaphragms act as the seal at the top of the valve. The primary improvement in this generation of valves is the elimination of the spring used to open the valve.

金属横膈膜在阀门的顶部作为密封。这一代阀门的主要的改进是取消了用于开启阀门的弹簧。

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Primary electric circuit for control system of miller, which is used to machine delivery valves, need to be improved because of its complexity and difficulty in maintenance.

出油阀铣床原有的电气控制系统控制线路复杂、维修困难，需要改造。

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Integral reactor systems -- including the reactor vessel itself, six steam generators, five primary coolant pumps, 12 isolation valves and more -- were stored outside for up to 18 months, exposed to highly corrosive tropical sea air and weather.

CENTERFORSECURITYPOLICY: A Chernobyl reminder just off our shores

The primary culprit behind the explosion appears to be the blowout preventer, a two-story-tall stack of valves on the seafloor that was built by Cameron in 2001 and designed to guillotine shut an out-of-control well.

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