nuclear-news

The Cabinet Office surveyed for the first time 2,967 personnel who assisted in evacuating residents living within a 20-kilometer radius of the Fukushima Daiichi nuclear complex as well as radiation cleanup and other activities from March 12 to 31, 2011.

The survey found that around 62% were exposed to radiation of less than 1 millisievert. But 38% were exposed to 1 millisievert or more, of whom 19% received 1 to 2 millisieverts and 5% received 5 to 10 millisieverts.

Daily radiation doses remained high until around March 15—the day the third reactor building suffered an explosion at the plant—and dropped below 0.1 millisievert from March 18.

The Cabinet Office revealed the data at a meeting to discuss ways to mitigate the radiation exposure of civilians helping others to evacuate in the event of a nuclear accident. The Japanese government is pushing for the reactivation of reactors that have cleared a set of new safety requirements imposed in the wake of the Fukushima crisis, triggered by a massive earthquake and tsunami on March 11, 2011, but public concern persists about whether smooth evacuations would be possible in the event of a nuclear accident.