What type of reactor(s) are at Fukushima?

The reactors at Fukushima were typical boiling water reactors, BWR-3 (Unit 1) and BWR-4 (Units 2 – 5) designs. Prior to the accident Units 1, 2 and 3 were operating, Unit 4 was defueled, but not operating (planned maintenance), and Units 5 and 6 fueled, but not operating (planned outage).


Download (pdf)



Know Nuclear

  • Sign up for newsletters
  • Center for Nuclear Science and Technology Information of the American Nuclear Society

    © Copyright 2018