100 foot deep wall at Fukushima plant still being built, says Tepco — Trying to keep underground contamination from ocean — Years from completion?

Published: October 25th, 2012 at 6:51 pm ET


Title: Fish Off Fukushima, Japan, Show Elevated Levels of Cesium
Source: New York Times
Date Published: October 25, 2012

To stop water from seeping out of the plant, Tokyo Electric is building a 2,400-foot-long wall between the site’s reactors and the ocean. But [Yoshikazu Nagai, a spokesman for Tepco] said the steel-and-concrete wall, which will reach 100 feet underground, will take until mid-2014 to build.

View the oceanside wall here

Published: October 25th, 2012 at 6:51 pm ET


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  3. ‘Great wall of Fukushima’ to be built underground? — Structure around reactors proposed April 27, 2013
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10 comments to 100 foot deep wall at Fukushima plant still being built, says Tepco — Trying to keep underground contamination from ocean — Years from completion?

  • razzz razzz

    One wall on a 'low permeable' layer (where the bottom of the purposed wall will sit) does not sound reassuring. Sounds like a freestanding dam surrounded by water.

    Notice the landfill layer in the drawing.

    Woods Hole reports that continued TEPCO readings taken just off shore shows fallout leveling off at a high level. Not as high when the most fallout was occurring but not the low readings before the tragedy struck. Means the leaking of cooling water continues, bringing with it radioactive contamination from the melted fuels.

    Half the groundwater seeping into the reactor buildings can't be recovered, according to Woods Hole but I don't know how they know that for certain.

    Situation hopeless. Can't encase the melted fuel in concrete until it cools down after 5 or 10 years and can't handle the water overflow while cooling during that time. Filtering might work if there was a closed cooling loop. There is no closed loop, everything is exposed to the environment.

  • Sickputer

    Ms. Tabuchi: You are such an excellent writer. I imagine you would have won a Pulitzer prize last year instead of a nomination if they didn't have the nucleocrat muzzle on you.

    My advice is to leave Tokyo while you still have functioning organs.

    Oh yes, the vaunted sea wall. I will believe it when I see it. And as mentioned…too little and too late.

    Madness in Japan…the Blobzillas can't be terminated.

  • jackassrig

    Were is this wall. I don't see any construction. No heavy equipment. Were are the trucke moving dirt, concrete, driving piles, etc. TEPCO is full of prunes. Lying SOB's

    • PhilipUpNorth PhilipUpNorth

      You may be right, jackassrig. This is a current article, containing a reference to the an old plan to lower the water table around the plants. TEPCO had planned to do this, but has now, I believe, dropped the plan. I will believe it when we see pictures of the Cofferdam under construction.

    • moonshellblue moonshellblue

      Too little and way too late.

  • GlowInTheDark GlowInTheDark

    This great wall Fukushima which they are going to spend years to build will not last 25 years. Constant bombardment of radiation, frequent earthquakes will make it crumble. So the false hope continues.

  • Radio VicFromOregon

    This wall is based upon the assumption that the cores are still in the reactors, which not even TEPCO thinks is the case anymore. Underground trench AND sea wall is the only way to begin to contain some of the groundwater leaks imo. The other issue for Japan is the current just off the shoreline which is a big oval circulating the same water round and round. When the contaminated water spills into the ocean, it gets caught up in that current and tends to not disperse further out for a time. It will simply accumulate more and more radioactivity and concentrate it. That makes that area highly contaminated. But, the dispersal theory that dispersal of radiation is somehow less dangerous is based on the now refuted belief that low doses of radiation are not harmful. The solution is not dispersal. The solution it not contaminating anything in the first place.

    • PhilipUpNorth PhilipUpNorth

      TEP.gov wanted to slow the flow of highly radioactive ground water into the Pacific. They came up with the Cofferdam and Well Project to solve this problem. The idea was to drill a series of wells uphill, behind Buildings1,2,3,&4, to intercept the ground water before it flowed into the plant area. This water was to be tested, then dumped into the Pacific. Then, they were going to build the Cofferdam in front of the seawall along the Harbor, to stop ground water from flowing into the Pacific. They thought they might be able to lower the water table, and drain some of the water out of the basements of the Reactor Buildings.
      My guess is that somebody pointed out that the flow of ground water was needed to cool the 3 Rogue Nuclear Reactors (corium) located in the mudrock under Buildings1,2,&3. If you stop the flow, the remaining water will heat up and boil off, releasing gigantic amounts of highly radioactive smoke and steam into the air. A far worse eventuality than merely destroying the Pacific Ocean.
      razzz says: "Filtering might work if there was a closed cooling loop. There is no closed loop, everything is exposed to the environment." He is exactly right. 🙂 TEPCO must create a closed cooling loop to keep the corium cool, while stopping the ground water from flowing into the Pacific Ocean. A cofferdam might be useful for building a closed loop cooling system. But this project was ill-conceived, IMHO, and I would be very surprised to see it go forward.

  • The Blue Light.

    You got to love cookies, my top of the page advert offers to solve my damp/wet basement problems. Perhaps we should give TEPCO the number.

  • DUDe DisasterInterpretationDissorder

    I never understood why they never build all this safety walls surroundings before they put the reactor on top . What is that you say , cost to much , not needed anyway and stuff . Aah Yes , money , i can see your point ..err…wait…