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Japan approves plan to release millions of tons of sewage from Fukushima nuclear plant into sea

Japan approves plan to release millions of tons of sewage from Fukushima nuclear plant into sea

 



Image source: AP

File – Tanks that store treated radioactive water after it is used to cool molten fuel seen at the Fukushima Daiichi Nuclear Power Plant

The sewage of the Fukushima nuclear plant will be released into the sea next year The Japanese nuclear regulator said the identified methods are safe and the risks to the environment are minimal. The plan was presented by Tokyo Electric Power Holding Company in December.

Japan’s nuclear regulator on Wednesday approved plans by the operator of the wrecked Fukushima nuclear plant to release treated radioactive wastewater into the sea next year, saying the methods described are safe and the risks to the environment are minimal.

The plan was presented by Tokyo Electric Power Holdings in December based on the government’s decision last year to release sewage as a necessary step for the plant’s ongoing cleaning and decommissioning.

A massive earthquake and tsunami in 2011 destroyed the cooling systems at the Fukushima plant, causing three reactors to fail and releasing large amounts of radiation. The water that was used to cool the three damaged reactor cores, which remains highly radioactive, has since leaked out, but has been collected and stored in tanks.

There is still concern in society and neighboring countries about the potential health risks from releasing wastewater containing tritium – a byproduct of nuclear power production and a potential carcinogen at high levels.

The government and TEPCO say more than 60 isotopes selected for treatment can be reduced to meet safety standards, except for tritium, but are safe if diluted. Scientists say the impact of long-term exposure to low doses on the environment and humans is unknown, and tritium could have a greater effect on humans when ingested in fish than in water.

Japan’s nuclear authority chief Toyoshi Fukita said the plan was developed conservatively, so the environmental impact of radiation may still be below the legal limit if there are any conceivable risks.

Under the plan, TEPCO will transport water that has been treated below releaseable levels by pipeline from the reservoirs to a coastal facility, where the water is diluted with seawater.

From there, the water will enter an undersea tunnel to be drained at a point within 1 km (0.6 mi) of the plant to ensure safety and reduce impact on local fishing and the environment, according to TEPCO.

The plan will become official after a 30-day public review, a formality that is not expected to revoke approval.

The green light came as soon as the Director of the International Atomic Energy Agency, Mariano Grossi, arrived in Japan to hold meetings with senior officials to discuss the plan, which received international attention.

Fukita will meet Grossi on Friday after the head of the International Atomic Energy Agency’s visit to the Fukushima plant on Thursday and meetings with other Japanese officials.

The government and TEPCO plan to begin the gradual release of treated water in the spring of 2023.

The contaminated water is stored in about 1,000 tanks at the damaged plant, which officials say must be removed so facilities can be built to decommission it. The tanks are expected to reach a capacity of 1.37 million tons next year – slower than an earlier estimate later this year.

Japan sought the assistance of the International Atomic Energy Agency to ensure that the water discharges met international safety standards, and to reassure the local fishing and other communities as well as neighboring countries who had strongly criticized the plan.

A team of experts from the International Atomic Energy Agency visited the plant in February and March for meetings with the Japanese government and TEPCO officials. The task force, in a report released in late April, said Japan was making “significant progress” on the plan and was taking appropriate steps toward the planned discharge.

(Except for the title, Indiatvnews.com has not edited the copy)

Read also | 6.3 magnitude earthquake between Taiwan and Japan; No tsunami warning issued

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