The process of removing contamination—such as radioactive or hazardous chemical contaminants—from people, land, or objects to make them safe (often performed by workers with protective equipment).
福島では長期間にわたり除染作業が続いている。
In Fukushima, decontamination work has continued for a long time.
作業員は防護服を着て除染を行った。
Workers wore protective suits and carried out decontamination.
除染の費用は自治体と国で分担された。
The cost of decontamination was shared by local governments and the national government.