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Japan’s biggest nuclear plant restarts second time after hiccup

Shoko Oda & Yusuke Maekawa / Bloomberg
Shoko Oda & Yusuke Maekawa / Bloomberg • 2 min read
Japan’s biggest nuclear plant restarts second time after hiccup
The number six reactor at its Kashiwazaki Kariwa Nuclear Power Plant began to resume at 2pm local time
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(Feb 9): Japanese utility Tokyo Electric Power Co restarted a reactor at the world’s biggest nuclear power plant, after an issue last month delayed the process.

The number six reactor at its Kashiwazaki Kariwa Nuclear Power Plant began to resume at 2pm local time, according to the company’s spokesperson. The unit’s power output will be gradually increased, with a goal of entering commercial operations on March 18. The utility was initially aiming for Feb 26 before the hiccup.

Tepco, the operator of the Fukushima nuclear power plant that suffered a meltdown accident in 2011, is facing public scrutiny to safely bring Kashiwazaki Kariwa back online. Its resumption also comes as the Japanese government looks to re-embrace atomic energy in an effort to curb carbon emissions, cut expensive fossil fuel imports and secure a stable source of power to meet rising electricity demand.

The reactor had restarted on Jan 21 but an electrical problem inside the panel used to operate and monitor the unit’s control rods forced the firm to halt the process a day later. Tepco conducted further investigations and found issues with misinterpretation of the electric current of a motor inside a control panel.

“I still believe it was my responsibility to decide to shut the plant” to conduct a deeper investigation into the issue, said Takeyuki Inagaki, the superintendent of the Kashiwazaki Kariwa facility during a press conference on Friday ahead of the latest restart. Tepco will proceed with each step of the restart carefully, he said.

Kashiwazaki Kariwa is Tepco’s only remaining operable nuclear facility. Reactor number six is one of seven reactors at the site and the first to be restarted. The number seven reactor has also received approval from the nation’s nuclear regulator to come back online.

See also: Japan defence stocks surge on Takaichi’s national security plans

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