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Japan nuclear regulator grants initial nod to Fukushima water release plan

Japan nuclear regulator grants initial nod to Fukushima water release plan

Wednesday, May 18, 2022, 14:32 GMT+7
Japan nuclear regulator grants initial nod to Fukushima water release plan
An aerial view shows the Fukushima Daiichi nuclear power plant following a strong earthquake, in Okuma town, Fukushima prefecture, Japan in this photo taken by Kyodo on March 17, 2022. Photo: Kyodo/via REUTERS

Japan's Nuclear Regulation Authority (NRA) granted an initial approval on Wednesday for a Tokyo Electric Power's (Tepco) plan for releasing water from the destroyed Fukushima nuclear power plant into sea, citing there are no safety issues.

The NRA plans to make a decision on final approval after a one-month public comment period, an official at NRA said, who deals with the issue.

In 2021, the Japanese government approved the release of over 1 million tonnes of irradiated water from the site after treatment into the ocean, starting around spring 2023. 

The announcement provoked concerns from local fishermen and objections from neighbouring China and South Korea.

Tepco plans to filter the contaminated water to remove isotopes, leaving only tritium, a radioactive isotope of hydrogen hard to separate from water. Tepco will then dilute the water until tritium levels fall less than 1/40th of regulatory limits, before pumping it into the ocean.

Even after the NRA's approval, Tepco, which plans to build a tunnel reaching into the sea for the operation, still needs to gain the consent from local communities, including the governor and mayors as well as fishermen, before starting an actual construction work, a Tepco spokesperson said.

The Japanese government and Tepco have indicated that the new facilities will be completed by mid-April next year, with the aim of starting discharge in around the spring of 2023.

Before granting the initial approval, NRA has looked into various factors such as the performance of equipment for diluting water with seawater, how to stop the release of water in the event of an abnormality and counter-measures against earthquakes and tsunami, the official said.

Reuters

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