Fukushima update: did nuclear chain reactions continue after shut-down? : News blog

There is growing evidence that uranium and plutonium fuel at the Fukushima nuclear plant may have continued nuclear fission chain reactions long after the reactors were shut down almost three weeks ago. This worrying development may explain the continued release of some shorter-lived radioisotopes from the stricken site. Tepco, the plant operator, said earlier this week that it had – on 13 occasio

[ironsand]

臨界なんてあり得ないと思っていても，Natureにすら書かれていると。。。。There is growing evidence that uranium and plutonium fuel at the Fukushima nuclear plant may have continued nuclear fission chain reactions long after the reactors were shut down almost three weeks