MELCOR Simulations of the Severe Accident at the Fukushima 1F2 Reactor.

In response to the accident at the Fukushima Daiichi nuclear power station in Japan, the US Nuclear Regulatory Commission and Department of Energy agreed to jointly sponsor an accident reconstruction study as a means of the assessing severe accident modeling capability of the MELCOR code. Objectives of the project included reconstruction of the accident progressions using computer models and accident data, and validation of the MELCOR code and the Fukushima models against plant data.