冷れい温おん停てい止し

noun

cold shutdown (nuclear reactor)

Technical term used in nuclear engineering and safety contexts. Refers to a state where the reactor coolant temperature is below the boiling point and the reactor is subcritical.

• 事じ故こ後ご、原げん子し炉ろは冷れい温おん停てい止し状じょう態たいに達たっした。

  After the accident, the reactor reached a cold shutdown state.