Japan's Tepco hit by setback in cleanup of crippled Fukushima nuclear plant

TOKYO - The operator of Japan's crippled Fukushima nuclear power plant has found that a coolant solution, used to create an ice wall halting the seepage of groundwater into reactor buildings, has leaked from two storage tanks.Still, it underscores the unpredictable challenges in the cleanup of the site, nearly 11 year after an earthquake and tsunami ravaged Japan's north-eastern coast, causing the world's worst nuclear disaster since Chernobyl in the Ukraine in 1986.

Only last year, Japan's government approved the release of more than one million tonnes of irradiated water from the site after treatment, starting around spring 2023.On Sunday, Tepco spokesman Tsuyoshi Shiraishi said about four tonnes of a calcium chloride solution used to maintain the ice wall had leaked in what was the eighth such leakage.

There was no immediate impact on the wall's function as it takes several months for the wall to thaw in the absence of coolant, he said.

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