Cover for Fukushima Spent Fuel Pool No. 4 — Tepco starts installing giant steel frame (PHOTOS)

Published: January 8th, 2013 at 2:12 pm ET
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18 comments


Title: Steel Beam Framing for the Cover to be Installed for Fuel Removal at Unit 4 at Fukushima Daiichi Nuclear Power Station
Source: Tokyo Electric Power Company
Date: January 7, 2013

Title: Steel Framing Construction for the Cover to be Installed for Fuel Removal at Unit 4 at Fukushima Daiichi Nuclear Power Station: Installation of 2 Columns of the First Layer
Source: Tokyo Electric Power Company
Date: January 8, 2013

Published: January 8th, 2013 at 2:12 pm ET
By

18 comments

Related Posts

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  3. TEPCO discusses installing structure to support No. 4 spent fuel pool from underneath May 11, 2011
  4. Tepco adds 60-ton cover on No. 4 fuel pool (PHOTOS) June 8, 2012
  5. Work to reinforce No.4 reactor building starts soon, hoping done by August — To prevent bottom of spent fuel pool from falling out May 23, 2011

18 comments to Cover for Fukushima Spent Fuel Pool No. 4 — Tepco starts installing giant steel frame (PHOTOS)

  • PhilipUpNorth PhilipUpNorth

    Surprised that they are going forward with this project. My thinking had been that the damaged and burned spent fuel assemblies would simply fall apart if handled for removal. Apparently, TEPCO believes that they can deal with those that dump fuel pellets into piles on the floor of SFP4. This is good news!

    • Anthony Anthony

      You can only pray that engineering speaking, they do not put the roof ON the suspended part of the complex… oopsie, the SFP collapsed when we tried to make it safer for you……

  • norbu norbu

    structure to be constructed of special radiation blocking legos.
    N

  • 3-11-11

    "TEPCO plans to start removing spent fuel from the Unit 4 reactor building starting in November of this year"

    "…it will take over a year for the work to be completed."

    http://enformable.com/2013/01/tepco-making-plans-to-remove-spent-fuel-from-fukushima-reactor-4/

  • Sickputer

    Still…better have some dang quick blowaway roof panels. I don't think Unit 4 has sung its last song.

  • Time Is Short Time Is Short

    Just a semi-earthquake-proof anti-camera cover that won't easily blow away in the wind. Once the cover is installed, the radiation level on the interior will go sky high, ie. no humans or robots will work in there.

    Next.

    • Unknown Unknown

      I agree. This is just cosmetic to hide the ugly destroyed building and so give the impression that the problem is solved. Next step, get the general public to agree to forget it happened by publicly praising themselves and stoking national pride for how quickly they dealt with the problem.

  • RememberThis RememberThis

    I cant help but totally agree with you Time.

    I imagine there will be some drain lines that run right into……. we all know what.

  • patb2009

    this so won't work. they need to get the fuel out of there, not trapped in a future tangled mess.

  • I don't think a cap on 4 will work unless it is vented.

    Have you all been watching the webcam? Every morning i look at it. The venting from the area around 4 is significant.

    • kalidances

      It is very worrisome Majia. Blessings and thanks to you for all of your hard work.

    • PavewayIII PavewayIII

      It would have to be ventilated, majia. There's too much hydrogen outgassing (tritium or otherwise) from even a 'normal' SPF. It could build up to explosive levels.

      Unfortunately, there's really no easy way to filter out the tritium. That's why it's just exhausted directly outside with fans from the refueling floor at BWRs. There's ways to adsorb *all* hydrogen from exhaust air, but it would be way too expensive for a utility.

  • PhilipUpNorth PhilipUpNorth

    In the early plans, this structure looked like it was going to be made of reinforced concrete. I was pleased to see that they are actually using steel. Would be nice to know whether the steel for similar structures is on order for SFP1,2,&3.

  • PhilipUpNorth PhilipUpNorth

    Did 1/4 of the fuel assemblies catch fire after 311? Did up to half of the spent fuel assemblies burn? Damaged or corroded spent fuel assemblies are likely to spill fuel (up to half a ton of pellets per fuel assembly) during removal. These hot pellets would be in water for moderation. Hot fuel pellets would fall into piles that would quickly go critical. No borated rack walls to keep fuel assemblies apart. No zirconium cladding to keep fuel pellets separated. No control rods like in the reactors to soak up neutrons, and shut the reaction down. Just piles of critical fuel pellets on the floor of the SFP.

    TEPCO: What is the plan for handling loose fuel pellets? 🙁

    (Best have plenty of borated sand and powdered lead handy to dump on spilled fuel pellets just in case. Fine, but what then?)

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    The less things you have in the home, the less things you need to fresh up, dirt, and change when a prospective customer is planning on traveling your home. http://www.quickmove.com/sell-my-property-quickly.html