緊きん急きゅう炉ろ心しん冷れい却きゃく装そう置ちきんきゅうろしんれいきゃくそうちMeanings1nounemergency core cooling system; ECCSTechnical term used in nuclear engineering. Often abbreviated as ECCS in English contexts.原げん子し炉ろには緊きん急きゅう炉ろ心しん冷れい却きゃく装そう置ちが設せっ置ちさ