没有外来供电冷却泵将会停止运转，从反应堆堆芯带走热量的水循环系统（即使反应堆处于关闭状态也必须正常运转）将会停止运作。
Without incoming energy, cooling pumps will cease functioning and the flow of water that carries heat away from the reactor core – required even when the reactor is in shutdown mode – will stop.