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Tepco “Never give up the frozen wall project”

Thursday, August 21, 2014 2:47

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(Before It's News)

Photo : Floating ice put into the underground trench. The camera catches the white noise due to the high level of radiation from contaminated water.

Following up this article..

JP Gov to decide to abort the preceding “frozen water wall” project on 8/19/2014 [URL]

NRA (Nuclear Regulation Authority) is going to decide to abort the frozen water wall project in underground trench on 8/19/2014.

This is the frozen water wall project followed by frozen ground wall project, which is to separate the underground trench from turbine buildings.

Because it needs to freeze the water, it is considered to be more difficult than frozen ground wall. However the decision of NRA may affect the entire frozen wall projects.

Tepco started injecting the coolant material in the end of April. They also put 250 t of ice and even dry ice but it hasn’t been frozen by now.

(cf, Drain pipes got clogged due to dry ice project for frozen water wall [URL])

NRA is going to hold a feedback session on 8/19/2014 to decide if they should continue the frozen water wall project or not.

On 8/20/2014, Tepco’s president Hirose announced in the press conference that they are not going to give up the frozen wall water project.

They have been putting over 400 t of ice and dry ice, however the frozen water wall is not built yet.

On Tepco’s assumption, however the frozen water wall managed to separate the underground trench up to 90% and they can fill the rest of 10% by grout made of concrete as Tepco stated in the feedback session of NRA (Nuclear Regulation Authority) on 8/19/2014.

On the other hand, specialists of NRA point out that the grout would generate heat to melt the ice.

Tepco commented they are going to check the feasibility of using grout to support frozen water wall by early in September.