The Nuclear Regulation Authority has proposed requiring utilities to implement detailed measures to protect their nuclear power plants from tsunami in a revision of current guidelines that fall short of such a step.
According to a draft released Tuesday of new safety standards following the 2011 meltdowns at the Fukushima No. 1 plant, each nuclear power station should be designed to withstand the biggest tsunami that could hit a site.
In relation to measures to deal with the risk of earthquakes, the NRA plans to stipulate more clearly than the existing guidelines on the quake resistance of nuclear plants that important facilities must not be built over active faults, according to the draft.