An alarm was triggered at a onetime nuclear fuel manufacturing facility Wednesday after radioactive substances leaked from materials that were being transferred at the facility operated by the Japan Atomic Energy Agency in Tokai, Ibaraki Prefecture, company officials said.
All nine of the workers who were in the room when the radiation leak occurred were cleared with no ill affects to their health, JAEA official Shinichi Nishikawa told a news conference.
JAEA said the workers, each wearing a mask, escaped radiation exposure after running into another room. No leak was detected outside the Nuclear Fuel Cycle Engineering Laboratories. The facility ended nuclear fuel production in 2001 and is being decommissioned.
The cause of the leak is under investigation. The agency suggested possible damage to the plastic covers during the routine change.
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