摘要
日本福岛发生事故的核电站是20世纪70年代兴建的早期沸水堆核电站,核反应堆的"剩余发热"问题是造成最近日本福岛第一核电站发生事故的主要原因之一,即当裂变反应停止时,由于还存在着大量的放射性裂变产物,其在进行衰变时会放出衰变热。以2011后3月15日测得的剂量作最坏的估算,此次事故对中国的影响:接受的核辐射剂量为1/50000mSv/h左右,约占天然本底的5%,考虑到风向和核素本身的衰变,结果还会低于此数值。
Japan＇s Fukushima Daiichi nuclear power complex, which had an accident began operating in the 1970s, was made up of boiling-water reactors. The heat produced by spent nuclear fuel was one of the major causes of the accident. When the fission reaction stops, the fuel still has large quantities of products of radioactive decay which give out heat. The impact of the radiation release by the nuclear accident on China, with even the scenarios detected on 2011 March 15th considered is estimated for the worst to be around 1/50 000 mSv/h, which is about 5% of the background radiation. If the wind direction and delay of the nuclear materials are considered, the final result will be even lower than that value.
出处
《电网与清洁能源》
2011年第3期51-52,共2页
Power System and Clean Energy
关键词
日本福岛
核辐射
核泄漏
核电站
Japan＇s Fukushima
nuclear radiation
nuclear leakage
nuclear plant
