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Fukushima fishermen concerned for future over release of radioactive water via The Guardian

Eight years after the triple disaster, Japan’s local industry faces fresh crisis – the dumping of radioactive water from the power plant

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Having spent the past eight years rebuilding, the Fukushima fishing fleet is now confronting yet another menace – the increasing likelihood that the nuclear plant’s operator, Tokyo Electric Power (Tepco), will dump huge quantities of radioactive water into the ocean.

“We strongly oppose any plans to discharge the water into the sea,” Nozaki, head of Fukushima prefecture’s federation of fisheries cooperatives, told the Guardian.

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Currently, just over one million tonnes of contaminated water is held in almost 1,000 tanks at Fukushima Daiichi, but the utility has warned that it will run out of space by the summer of 2022.

Tepco has struggled to deal with the buildup of groundwater, which becomes contaminated when it mixes with water used to prevent the three damaged reactor cores from melting. Although the utility has drastically reduced the amount of wastewater, about 100 tonnes a day still flows into the reactor buildings.

Releasing it into the sea would also anger South Korea, adding to pressure on diplomatic ties already shaken by a trade dispute linked to the countries’ bitter wartime history.

Seoul, which has yet to lift an import ban on Fukushima seafood introduced in 2013, claimed last week that discharging the water would pose a “grave threat” to the marine environment – a charge rejected by Japan.

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Confirming Maeda’s fears, almost a third of consumers outside Fukushima prefecture indicated in a survey that dumping the contaminated water into the sea would make them think twice about buying seafood from the region, compared with 20% who currently avoid the produce.

Tepco’s Advanced Liquid Processing System removes highly radioactive substances, such as strontium and caesium, from the water but the technology does not exist to filer out tritium, a radioactive isotope of hydrogen that coastal nuclear plants commonly dump along with water into the ocean. Tepco admitted last year, however, that the water in its tanks still contained contaminants beside tritium.

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Supporters of the discharge option have pointed out that water containing high levels of tritium, which occurs in minute amounts in nature, would not be released until it has been diluted to meet safety standards.

But Shaun Burnie, a senior nuclear specialist with Greenpeace Germany who regularly visits Fukushima, said a proportion of radioactive tritium had the potential to deliver a concentrated dose to cell structures in plants, animals or humans. “Dilution does not avoid this problem,” he said.

Burnie believes the solution is to continue storing the water, possibly in areas outside the power plant site – a move that is likely to encounter opposition from nuclear evacuees whose abandoned villages already host millions of cubic metres of radioactive soil.

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Critics say the government is reluctant to openly support the dumping option for fear of creating a fresh controversy over Fukushima during the Rugby World Cup, which starts this week, and the buildup to the 2020 Tokyo Olympics.

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