NRA sets up new rules on evacuation

Japanese nuclear regulators have introduced new rules for monitoring radiation in the event of a nuclear accident to decide whether to evacuate people.

After the Fukushima Daiichi accident in 2011, officials at the Nuclear Regulation Authority decided to introduce a new plan of disaster management around plants. They said they would collect monitored data on radiation levels within 30 kilometers before deciding whether to issue an evacuation order. They also said they would evacuate all residents up to 5 kilometers unconditionally.
[link to www3.nhk.or.jp]
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