Photo/Illutration The No. 1 to No. 4 reactors of the Kashiwazaki-Kariwa nuclear power plant stand in the foreground, while the No. 5 to No. 7 reactors can be seen in the background. (Asahi Shimbun file photo)

KASHIWAZAKI, Niigata Prefecture--Tokyo Electric Power Co. indicated it would decommission idle reactors at its Kashiwazaki-Kariwa nuclear plant here, but that move may not be enough to win local consent to restart other reactors at the site.

TEPCO officials, including President Tomoaki Kobayakawa, met with Kashiwazaki Mayor Masahiro Sakurai on Aug. 26 and passed on their plans to decommission one or more reactors within five years after operations are resumed at the No. 6 and No. 7 reactors.

TEPCO has long planned to restart those two reactors at the seven-reactor plant. As a condition for his consent to the restarts, Sakurai in June 2017 insisted that TEPCO compile a plan regarding the decommissioning of the other five reactors.

Hearing of TEPCO’s latest plan, Sakurai said the proposal was likely the maximum that could be expected of the utility.

“But I cannot hand out a passing grade based on today’s answer alone,” the mayor said.

He said he would ask TEPCO to respond to additional requests related to a resumption of operations, such as how measures to enhance safety at the plant would affect the local economy.

TEPCO had insisted that resuming operations at the No. 6 and No. 7 reactors after both passed stricter safety regulations would provide a major pillar for rebuilding its corporate finances.

Sakurai had asked for a decommissioning plan because he felt the need to reduce the risks to his city from the high concentration of nuclear reactors and to develop a decommissioning sector among businesses in Kashiwazaki.

However, TEPCO has other hurdles to clear before it can resume operations at the Kashiwazaki-Kariwa plant.

The Niigata prefectural government has been conducting its own evaluation of the 2011 triple meltdown at TEPCO’s Fukushima No. 1 nuclear power plant. It remains to be seen if Niigata Governor Hideyo Hanazumi will give his consent to resumption of operations.

The seven reactors at the Kashiwazaki-Kariwa plant are all boiling-water types similar to those at the Fukushima No. 1 plant. The No. 1 to No. 5 reactors at the plant in Niigata Prefecture can each generate 1.1 gigawatts, while the No. 6 and No. 7 reactors can each produce 1.356 gigawatts.

The oldest No. 1 reactor began operations in 1985, meaning it is fast approaching the 40-year limit for its operating life that is in place, in principle, for nuclear reactors.

The No. 2 to No. 4 reactors have remained offline since the 2007 Niigata Chuetsu-oki Earthquake.

All reactors at the Kashiwazaki-Kariwa plant have been offline since the 2011 Great East Japan Earthquake and tsunami.

(This article was written by Hiroki Ito and Rintaro Sakurai.)