残ざん留りゅう熱ねつ除じょ去きょMeanings1nounresidual heat removal; RHRTechnical term used in nuclear engineering and power plant safety systems.原げん子し炉ろの安あん全ぜん設せっ計けいでは、残ざん留りゅう熱ねつ除じょ去きょ系けいが重じゅう要ような役やく割わりを果はたす。In nuclear reactor safety design, the residual heat removal system plays an important role.