China news network June 7, according to Japanese media reports, local time this month 6 noon 11:15, located in Ibaraki County, the Japanese Atomic Energy Research and Development Agency (JAEA) "Dazai research and development Center" fuel research building, 5 male staff in the inspection of the machine, gloves and shoes contaminated with radioactive materials.

reported that although the 5 people did not have trauma, but three of them were measured in the nose to release alpha rays of radioactive substances, the maximum activity of 24 becquerels. The JAEA is investigating whether they were exposed to internal radiation. There were no external effects.

According to Japan's Nuclear Regulatory Agency and JAEA, workers were in the room to prevent the release of radioactive materials to open the nuclear material storage container, the internal plastic bag burst, the nuclear material flew away. Although the workers wore half-face masks covering their mouths and noses, they may have inhaled radioactive materials through the cracks, JAEA said.

Due to the increase in plutonium activity in the air in the working room, the JAEA immediately banned personnel from entering. It said there was no change in the amount of radiation at the site boundary of the centre.

It is known that the fuel research building is a facility that uses uranium and plutonium to research new types of fuel for high-speed reactors. The JAEA has decided to abolish it and now manages the nuclear materials used in research. The center houses Changyang, a fast neutron experimental reactor that JAEA is striving to restart, and HTTR, a high temperature engineering experimental research reactor.

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