wetwell drywell cooling system 湿井干井冷却系
The wetwell is connected to the drywell by a number of wide pipes.
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So long as power was available, pumps would circulate hot fluid from the reactor to the wetwell where it would be condensed.
Both the drywell and the wetwell are surrounded by a secondary containment vessel (or shield building) also built from reinforced concrete about a meter thick.
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