Photo/Illutration Spent nuclear fuel is placed in a storage pool at Kansai Electric Power Co.’s Takahama nuclear power plant in Fukui Prefecture in 2020. (Provided by Kansai Electric Power Co.)

FUKUI--Fukui Governor Tatsuji Sugimoto on Oct. 13 approved Kansai Electric Power Co.’s revised plan on storing spent nuclear fuel, drawing outrage from prefectural assembly members.

The governor’s approval means that three aging reactors operated by the utility in the prefecture can continue to run.

The continued operation of the old reactors was contingent on Kansai Electric finding a site outside Fukui Prefecture to store the spent fuel from its nuclear plants.

Sugimoto, who met with industry minister Yasutoshi Nishimura and Kansai Electric President Nozomu Mori on Oct. 13, approved the plan even though the utility has not picked a storage site.

“The plan is a pie in the sky as no candidate site for the interim storage facility has been presented,” a prefectural assembly member said.

Under the approved plan, operations will start at an interim storage facility outside the prefecture around 2030 for spent nuclear fuel accumulating at Kansai Electric’s nuclear power plants in Fukui Prefecture.

The spent fuel will remain there until it can be transferred to a reprocessing plant.

But that brings up another problem.

The central government has long been promoting a nuclear fuel recycling program that reprocesses spent nuclear fuel.

However, the reprocessing plant in the village of Rokkasho in Aomori Prefecture, the key facility in the recycling program, has suffered a series of problems, and its completion has been delayed for more than 25 years.

Spent nuclear fuel is currently placed in storage pools at the nuclear plants in Fukui Prefecture.

The prefectural government has been urging Kansai Electric to build an interim storage facility outside the prefecture because space is running out for the fuel.

The utility had promised to find a candidate site for the storage facility by the end of this year.

It said if it could not find a site, it would halt the No. 1 and No. 2 reactors at the Takahama nuclear plant and the No. 3 reactor at the Mihama nuclear plant. These three reactors have each been in operation for more than 40 years.

In June, Kansai Electric presented a plan to ship about 200 tons of spent nuclear fuel from the Takahama nuclear power plant to France, claiming “we fulfilled our promise.”

But the prefectural government opposed this plan, saying that volume was only a fraction of the total amount.

On Oct. 10, the utility proposed a revised plan, including increasing the amount to be shipped to France and setting up dry storage facilities within the compounds of nuclear plants in Fukui Prefecture that are separate from the existing storage pools.

Kansai Electric also said the storage capacity within the nuclear plants would not increase, in principle.

Another prefectural assembly member criticized this plan.

“Since no duration was specified for the dry storage facilities, they might end up effectively serving as the final disposal site,” the assembly member said.

(This article was written by Kenji Oda and Tsunetaka Sato.)

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