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» TEPCO decided to bury a trench at Fukushima NO.1 by using concrete

TEPCO has decided to bury a trench at the crippled Fukushima No. 1 Nuclear Power Plant using concrete after an effort to completely stop the flow of radiation contaminated water failed.

TEPCO reported its plan to the Nuclear Regulation Authority (NRA) on Nov. 21, and the NRA approved it, saying that the plan can at least reduce the amount of contaminated water remaining in the trench.

Around 5,000 metric tons of contaminated water is standing in the ocean-side trench of the Fukushima plant’s No. 2 reactor. TEPCO initially had planned to stop the flow by freezing the contaminated water at the point where the reactor building and the trench meet, after which it hoped to remove the water from the trench. However, the plan failed as the water was insufficiently frozen, and the company gave up on completely removing the contaminated water.

According to the new plan, TEPCO will begin pouring concrete that can be used under water at the end of November while draining contaminated water inside the trench. It will see if the flow of the water stops after burying the deepest part of the underground tunnel.
<Media Report>
TEPCO to bury Fukushima plant trench with concrete to control radioactive water (Mainichi Newspaper)

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