緊急 きんきゅう炉心 ろしん冷却 れいきゃく装置 そうちじゃなかった
kinkyūroshinreikyakusōchijanakatta

Noun
Da Copula

The past negative form of 緊急炉心冷却装置

1. Was not an emergency core cooling system.

Past/Perfective
Negative