Fukushima. Response of nuclear operators

From the viewpoint of the World Association of Nuclear Operators (WANO), the nuclear operators' response and the needed changes inside WANO are presented in order to reinforce nuclear safety worldwide; check every operator's ability to deal with a station black-out or a beyond design basis event, like a fire or flood. The primary responsibility for nuclear safety lies with the operators who are both individually and collectively responsible. Moreover, a high level of safety is best served by a credible regulator with harmonised safety requirements worldwide and a strong WANO. (orig.)