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» [Three years after 3.11] Radiation exposure among the plant workers still remain high

About half of the workers at the Fukushima No. 1 plant in the three years have been exposed to more than 5 millisieverts of radiation, a level used as a radiation exposure reference for humans.

The levels of radiation exposure among workers at the Fukushima plant have decreased since the 2011 nuclear accident, but there was a spike from last summer with the problem of dealing with the growing volume of radiation-contaminated water.

The labor ministry instructed TEPCO at the end of 2013 to improve the measures taken to deal with radiation exposure.

About 3,000 people work at the Fukushima No. 1 plant on any given day. Workers who are exposed to radiation in excess of 50 millisieverts over the course of a year or greater than 100 millisieverts over a five-year period are prohibited from working at a nuclear plant.

The 5-millisievert annual radiation level is used to determine eligibility for the government’s workers’ compensation insurance program for those who develop leukemia, as well as to establish radiation control zones that restrict entry by residents.

According to TEPCO statistics, there were a total of 32,034 workers at the Fukushima No. 1 plant between the March 2011 nuclear accident and January 2014. Of that number, 1,751 workers were exposed to a combined total in excess of 50 millisieverts. Of that number, 173 workers were exposed to more than 100 millisieverts.Close to half the overall number of workers, or 15,363, were exposed to more than 5 millisieverts.
<Media Report>
THREE YEARS AFTER: Risks of radiation exposure remain high for Fukushima workers (Asahi Newspaper)


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