Fukushima Daiichi Unit 1 Ex-Vessel Prediction: Core-Concrete Interaction

Fukushima Daiichi Unit 1 Accident Progression Uncertainty Analysis and Implications for Decommissioning of Fukushima Reactors ? Volume I

Sandia National Laboratories (SNL) has conducted an uncertainty analysis (UA) on the Fukushima Daiichi unit (1F1) accident progression with the MELCOR code. The model used was developed for a previous accident reconstruction investigation jointly sponsored by the US Department of Energy (DOE) and Nuclear Regulatory Commission (NRC). That study focused on reconstructing the accident progressions...

Results of Investigation around Lower Parts of Unit 1 Vent Pipes at Fukushima Daiichi NPS

Fukushima daiichi nuclear accident and radiation exposure.

We consider that the Great East Japan Earthquake was a combined disaster involving earthquake and tsunami as well as the release of radioactive materials into the environment (Fig. 1). Something I would like you to notice here is that among various disasters, a radiation nuclear disaster cannot be seen; it cannot be felt; in fact it cannot be detected without special devices. Because of that, t...

Our Next Two Steps for Fukushima Daiichi Muon Tomography

After the vast disasters caused by the great earthquake and tsunami in eastern Japan, we proposed applying our Muon Tomography (MT) technique to help and improve the emergency situation at Fukushima Daiichi using cosmic-ray muons. A reactor-tomography team was formed at LANL which was supported by the Laboratory as a response to a request by the former Japanese Prime Minister, Naoto Kan. Our go...

Effects of the Fukushima Daiichi nuclear accident on goshawk reproduction

Although the influence of nuclear accidents on the reproduction of top predators has not been investigated, it is important that we identify the effects of such accidents because humans are also top predators. We conducted field observation for 22 years and analysed the reproductive performance of the goshawk (Accipiter gentilis fujiyamae), a top avian predator in the North Kanto area of Japan,...