noun
residual heat removal; RHR
Technical term used in nuclear engineering and power plant safety systems.
原子炉の安全設計では、残留熱除去系が重要な役割を果たす。
In nuclear reactor safety design, the residual heat removal system plays an important role.
Compound of 残留 (residual) + 熱 (heat) + 除去 (removal).