Kansai Electric Power Co. is considering transferring spent nuclear fuel stored in its three nuclear plants in Fukui Prefecture to an intermediate storage facility in Aomori Prefecture, sources said on Jan. 6.
KEPCO had promised to move the fuel outside the prefecture when the Fukui prefectural government allowed the utility to restart two reactors at its Oi nuclear power plant.
KEPCO President Shigeki Iwane has said that a facility will be secured by the end of 2018 to accept the fuel.
According to the sources, KEPCO is also considering other locations. However, the intermediate storage facility, located in Mutsu in northern Aomori Prefecture, is a promising candidate because it has already been constructed.
However, since consent from local governments is required, KEPCO could face difficulties in transferring the fuel to the facility.
At present, KEPCO is storing spent nuclear fuel, which is produced in its Takahama, Oi and Mihama nuclear power plants in Fukui Prefecture, in pools in their compounds. However, about 70 percent of the capacity of those pools have been filled.
If the restarts of the reactors in the plants proceed as expected, the remaining 30 percent will also be filled in about seven years. Therefore, KEPCO is trying to secure an intermediate storage facility to temporarily store the fuel by putting it in metal containers.
The intermediate storage facility in Mutsu was jointly constructed by Tokyo Electric Power Company Holdings Inc. and Japan Atomic Power Co. at a cost of about 100 billion yen ($884.6 million) to store spent nuclear fuel produced by their nuclear plants.
However, acceptance of the fuel from those plants has yet to start because the facility is currently undergoing screenings to see if it is in compliance with new safety standards introduced after the 2011 Fukushima nuclear disaster.
The intermediate storage facility has a capacity of accepting a total of 5,000 tons of spent nuclear fuel.
KEPCO is considering securing storage space there by purchasing part of the shares of a company that will operate the facility.