noun
containment vessel; reactor container
Technical term used in nuclear engineering; refers to the structure that encloses the reactor core to prevent release of radioactive materials.
原子炉格納容器は、放射性物質の漏洩を防ぐために設計されている。
The containment vessel is designed to prevent the leakage of radioactive materials.
事故時には、原子炉格納容器の健全性が重要となる。
In the event of an accident, the integrity of the containment vessel becomes critical.