Tepco checks for cracks in Spent Fuel Pool No. 4 — Now says reactor building not tilting “as a whole”

Published: May 25th, 2012 at 11:17 am ET
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Subscription Only: Fukushima No. 4 spent fuel pool sound enough to store fuel: TEPCO
Kyodo News
May 25, 2012

The operator of the crippled Fukushima Daiichi nuclear power plant said Friday that its latest inspection has confirmed that the spent fuel pool of the No. 4 unit is not tilting and is capable of safely storing the nuclear fuel inside. 

Concerns remain regarding the pool because it contains a large number of fuel assemblies and the outer wall of the building housing the reactor and the pool was severely damaged by a hydrogen explosion in the early days of the nuclear crisis.

Based on the inspection conducted between May 17 and 23, plant operator Tokyo Electric Power Co. said the No. 4 unit building is not tilting as a whole, while cracks over 1 millimeter wide in the pool’s concrete structure were not found during visual checks.

[...]

Published: May 25th, 2012 at 11:17 am ET
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  3. Tepco prepares to film Spent Fuel Pool No. 4 — “You can vaguely discern the fuel rods” says worker February 10, 2012
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30 comments to Tepco checks for cracks in Spent Fuel Pool No. 4 — Now says reactor building not tilting “as a whole”

  • Whoopie Whoopie

    Brand new: Japan Unlikely To Exit Nuclear Power http://huff.to/KfSBFZ via @HuffPostPol


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    • arclight arclight

      ""This summer will be the showdown for both pro- and anti-nuclear camps," said Shoichi Kondo, a ruling Democratic Party lawmaker and founding member of a non-partisan group advocating an exit from nuclear power. (Editing by Ron Popeski)"

      more propaganda for the pro nukes.. wonder how much this is costing.. all the msm costs could create vast solar and wind fields.. still no real planning… very scary..


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  • What a load of crap. "…not tilting 'as a whole'"
    Spin, spin, spin… ;)

    Okay, so maybe only the top half is tilting.

    It's simple to verify. Look at photos of the Web Cam from May 15 or before and look at it now. That structure is HUGE. The top has dropped significantly. No doubt in my opinion.


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  • Sharp2197 Sharp2197

    It seems every statement they make has some kind of modifier.
    "as a whole"


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  • lilclover

    Well thank God. I can finally sleep at night knowing Tepco is looking out for me. (sigh)


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  • mungo mungo

    not tilting "as a whole"…is that like being only a little bit pregnant?!


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  • lam335 lam335

    "… Tokyo Electric Power Co. said the No. 4 unit building is not tilting as a whole, while cracks over 1 millimeter wide in the pool’s concrete structure were not found…"

    Upon further inspection, investigators discovered that the reactors had not actually melted down or exploded either.


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  • What-About-The-Kids

    They neglected to mention the 3,984 cracks they DID find, measuring .999 millimeters, but that's ok, because they believe they won't present a problem…as a whole.

    /sarc

    Curious to know how many cracks they did find smaller than 1 mm and whether the stress on those could cause them to become larger over time…


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  • fireguyjeff fireguyjeff

    "Uhh….Dad….like uhhhh….I partially totaled the car"

    So the assumption here is that SFP4 can't be tilting if the building isn't tilting??? WTF!!??

    Also, for those of us here in the US, a 1mm crack is 39 thousandths of an inch wide.

    And that they felt the need to qualify the crack width dimension, then it surely means they found lots of serious cracks that are less than 1mm wide.

    For reference, 30 thousandths (mils) is the standard thickness for credit cards.

    So TEPCO has no problems with SFP wall cracks wide enough to shove a credit card in to and still have wiggle room.

    So the question now is how many cracks .9mm wide did they find?
    How deep?
    How long?
    How many half mm wide did they find?


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  • fireguyjeff fireguyjeff

    @WATK…
    Strange synchronicity there that we posted the same theme at the same time.


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  • Urban27

    It is absolutely OUTRAGEOUS!

    TO HAVE THE NERVE OF LYING ABOUT THE FOURTH REACTOR BUILDING.
    THE BUILDING IS DEFINITELY LEANING!

    AFTER THE TREMENDOUS EXPLOSION OF THE THIRD REACTOR, THE FORTH IS LEANING AWAY FROM THE THIRD. IT HAS A PARALLEL OFFSET.

    IT IS SO CLEAR TO ANYONE THAT CAN COMPARE TWO PHOTOS, BEFORE AND AFTER!

    THEY SEEMS TO BE LYING ABOUT EVERYTHING. THIS IS JUST A BUILDING LEANING, BUT ALL THE OTHER UNTRUE REPORTS – ABOUT RADIATION AND PEOPLES HEALTH, AND EMISSIONS. IT IS A CRIME TO HUMANITY TO KEEP LYING ABOUT THIS WHOLE SITUATION.


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  • goathead goathead

    There's only one leaning building that I love and trust and that's a tower somewhere in Italy!!!!!


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  • SteveMT

    How ironic: TEPCO still cannot find any 1 mm cracks, but TEPCO itself and the whole of Japan are crumbling.


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  • PhilipUpNorth philipupnorth

    I get the feeling that now I can totally ignore the Fuku situation, and simply follow Japan EQs. When the m7 EQ hits Fuku, time to go into the shelter for a year or two. NBC Air Filtration anyone? http://www.americansaferoom.com
    What I wonder is just how long the TEPCO spokesman's nose is after telling this whopper? Peace.


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  • Heart of the Rose Heart of the Rose

    "As a whole"..The engineers here are going to laugh..
    This is also perhaps the wrong term..
    Why are they worried about "plumline"?
    Please see pg.17.
    ( might be worthy of a download.)
    http://www.tepco.co.jp/nu/fukushima-np/images/handouts_120525_07-j.pdf


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    • HoTaters HoTaters

      Plumb line measures vertical lines straight up and down. It's used to determine vertical angles and depth. Measure the angle against the plumb line (straight up and down vertical). 'Trying to give a simple explanation; hoping it comes across. Engineers, surveyors, construction industry use plumb lines a lot.

      Dowsing instruments look a lot like plumb bobs, but they are intended to move. Plumb bobs should be stationary when taking a measurement.

      From the Free Dictionary:

      plumb line
      n.
      1. A line from which a weight is suspended to determine verticality or depth.
      2. A line regarded as directed exactly toward the earth's center of gravity.


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      • Heart of the Rose Heart of the Rose

        @HoTaters..thanks again…Sometimes people don't use expressions very often..
        It's Plumb line…lol


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        • Heart of the Rose Heart of the Rose

          PS..I'm having to work a little extra hard here..
          Physics Forum..usually is quick to translate the TEPCO hand outs..but they are more involved in arguing about the origin of the explosion in reactor 3.


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    • aigeezer aigeezer

      That's a good pdf, Heart. The photos help clarify some of the "support" issues for SFP4 that we were wondering about a week or two ago – but – I haven't found a good way to translate it to English yet. When I run it through Google Translate, I get all the captions in English but lose the matching photos. Suggestions welcome.

      HoTaters is right about plumb lines. More plumb trivia – it's from the Latin word "plumbum" meaning "lead" (the metal) because old Roman pipes were made from lead. Hence "plumber" in English. The weight on the bottom of a plumb line, was originally made from lead.

      I would guess that all of Tepco's measurements would be done with lasers, rather than with plumb lines.


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  • 3C

    Love that "As a whole", but I think one
    word was badly translated. Should have
    been HOLE. Now that would make sense.


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  • andii

    Are we reassured with just the visual check? If the check was done by US engineers (and not just any 'inspectors') would they have used some kind of equipments to see if there were any cracks? I'm no expert but knowing the seriousness of the situation, I personally would have gone a step further to make sure there ain't any cracks!!


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    • What-About-The-Kids

      I would prefer they did so too, Andii, especially with the corroding rebar they discovered and admitted finding at Unit 3! (see Aigeezer's comment above.)

      All that salt water, oxidization and radiation together must be quite the corrosive force. How long can any of what's left of these "buildings" withstand the corrosion, erosion and jarring movements of constant aftershocks?


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