The sound of treated radioactive water flowing down to an underground secondary pool could be heard from beneath the ground during a media tour of Japan's Fukushima Daiichi nuclear power plant
This photo taken during the tour of the treated water dilution and discharge facility for foreign media shows TEPCO official Kenichi Takahara explains about a facility to take samples of treated radioactive wastewater after dilution for testing before release, part of the facility for the releasing treated radioactive water to sea from the Fukushima Daiichi nuclear power plant, operated by Tokyo Electric Power Company Holdings , in Futaba town, northeastern Japan, Sunday, Aug. 27, 2023.
“The best way to eliminate the contaminated water is to remove the melted fuel debris,” said Tokyo Electric Power Company Holdings spokesperson Kenichi Takahara, who escorted Sunday’s media tour for the foreign press. But it is just the beginning of the challenges ahead, such as the removal of the fatally radioactive melted fuel debris that remains in the three damaged reactors, a daunting task if ever accomplished.
The Japanese government and TEPCO say releasing the water is an unavoidable step in the decommissioning of the plant.and tsunami destroyed the plant’s cooling systems, causing three reactors to melt. Highly contaminated cooling water applied to the damaged reactors has leaked continuously to building basements and mixed with groundwater.
About 880 tons of radioactive melted nuclear fuel remain inside the reactors. Robotic probes have provided some information but the status of the melted debris remains largely unknown, and the amount could be even larger, says Takahara, the TEPCO spokesman. Inside the worst-hit Unit 1, most of its reactor core melted and fell to the bottom of the primary containment chamber and possibly farther into the concrete basement. A robotic probe sent inside the Unit 1 primary containment chamber has found that its pedestal — the main supporting structure directly under its core- was extensively damaged.
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