noun
emergency core cooling system; ECCS
Technical term used in nuclear engineering. Often abbreviated as ECCS in English contexts.
原子炉には緊急炉心冷却装置が設置されている。
An emergency core cooling system is installed in the nuclear reactor.
Compound of 緊急 (emergency) + 炉心 (reactor core) + 冷却 (cooling) + 装置 (device).