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Japan nuclear plant sends more “treated” radioactive wastewater into Pacific Ocean — a process expected to last decades

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FILE - South Korean fishermen stage a rally against the planned release of treated radioactive water from the wrecked Fukushima nuclear power plant, in front of the National Assembly in Seoul, South Korea, Monday, June 12, 2023. (AP Photo/Ahn Young-joon)

TOKYO (AP) — Japan’s wrecked Fukushima nuclear power plant began releasing a second batch of treated radioactive wastewater into the sea on Thursday after officials claim the first round of discharges ended smoothly.

Plant operator Tokyo Electric Power Company Holdings said workers activated a pump to dilute the treated radioactive water with large amounts of seawater, slowly sending the mixture into the Pacific Ocean through an underground tunnel.

The wastewater discharges, which are expected to continue for decades, have been strongly opposed by fishing groups and neighboring countries including South Korea, where hundreds of people staged protest rallies.

China banned all imports of Japanese seafood, badly hurting Japanese seafood producers and exporters.

The plant’s first wastewater release began Aug. 24 and ended Sept. 11. During that release, TEPCO said it discharged 7,800 tons of treated water from 10 tanks. In the second discharge, TEPCO plans to release another 7,800 tons of treated water into the Pacific Ocean over 17 days.

About 1.34 million tons of radioactive wastewater is stored in about 1,000 tanks at the plant. It has accumulated since the plant was crippled by a massive earthquake and tsunami in 2011.

TEPCO and the government say discharging the water into the sea is unavoidable because the tanks will reach capacity early next year and space at the plant will be needed for its decommissioning, which is expected to take decades.

They say the water is treated to reduce radioactive materials to safe levels, and then is diluted with seawater by hundreds of times to make it much safer than international standards.

Some scientists say, however, that the continuing release of low-level radioactive materials is unprecedented and needs to be monitored closely.

Japan’s government has set up a relief fund to help find new markets and reduce the impact of China’s seafood ban. Measures also include the temporary purchase, freezing and storage of seafood and promotion of seafood sales at home.

Cabinet ministers have traveled to Fukushima to sample local seafood and promote its safety.

TEPCO is tasked with providing compensation for reputational damage to the region’s seafood caused by the wastewater release. It started accepting applications this week and immediately received hundreds of inquiries. Most of the damage claims are linked to China’s seafood ban and excess supply at home causing price declines, TEPCO said.

Agriculture Minister Ichiro Miyashita promoted Japanese scallops at a food fair in Malaysia on Wednesday on the sidelines of a regional farm ministers’ meeting.

The International Atomic Energy Agency has reviewed the safety of the wastewater release and concluded that if carried out as planned, it would have a negligible impact on the environment, marine life and human health.

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