NRC: Fukushima reactor’s containment leaked at 300% per day — Assumed only 1% (VIDEO)

Published: March 26th, 2013 at 10:57 am ET


Source: The Medical and Ecological Consequences of the Fukushima Nuclear Accident, Day 1
Author: The Helen Caldicott Foundation
Date Presented: March 11, 2013

At ~60:00 in

Arnie Gundersen, Fairewinds Energy Education:

What the NRC said in a phone call on March 23 [2011] is that the reactors at Daiichi were leaking at 300% per day.

That means that the gases inside Daiichi were leaving the containment every 8 hours.

Whatever radiation was getting out of that nuclear fuel was being liberated through the environment within 8 hours, because the containment leak rate was 300% per day — not 1% like the NRC assumes.

Gundersen’s full presentation here

Published: March 26th, 2013 at 10:57 am ET


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24 comments to NRC: Fukushima reactor’s containment leaked at 300% per day — Assumed only 1% (VIDEO)


    what does "…containment turnovers…" mean? I don't understand at all what's being explained…

    • Nukites

      I think it means the volume of the containment, probably hundreds of cubic meters of gases, was released three times.

      • weeman

        Correct, explained by Arnie in video, ie the air in the room you are in is changed three times a day and released into the atmosphere with any contaminants. First day around 60 min in video.
        Two thinks Arnie said that really stand out to me, when does a technology become unexceptable and the best, any fool proof system the fools are going to exceed the proofs, pure dead brilliant Arnie and how true.

        • weeman

          By law the air in the work place must be exchanged 6 times a hour, that is why on a airplane if someone is sick there is a high probability of you getting sick, air on plane is not changed as often it's a trade secret, don't tell anybody or the cost of flying will increase but you would arrive healthier.

  • lam335 lam335

    Perhaps this is a stupid question, but how does something leak 300% per day? If something leaks 100% once, isn't it empty then?

    • m a x l i

      I guess, it means it's empty in 8 hours.
      300% per day=100% per third of a day.

      • m a x l i

        Well, it's all in the text box above.

        To say "300% per day" really is a bit confusing but this way you can conveniently compare it to the initial assumption of "1% per day" and without much hassle you immediately know it's 300 times worse than initially told.

  • SCE56

    What he is saying is that the contents of the containment, say it is 500Cubic Meters of open space, then the leakage is 1500Cubic meters of contaminated air steam smoke etc per day 1500/500= 300%

  • If the air inside is being exchanged three times a day, why do they still call it 'containment?'

  • PhilipUpNorth PhilipUpNorth

    Let's say you build a pear-shapped steel "container" about 100' tall. Suppose there is an explosion inside, which splatters 2,300C corium all over the interior. Say you spray tons of water in there every day, which runs down over the corium spatter, and is steaming by the time the water pools over the big hole in the bottom, where most of the 80 to 100 tons of melted nuclear fuel ate its way through the bottom of the "container" and out through the bottom of the building. Suppose there are holes all over the "containment", for air to enter, and for hot air and steam to leave. Three complete air changes a day. You can hear air escaping from the plumbing at about 14 minutes in to this video tour of Unit 1:
    Those GE Mark I "Containment Vessels" sure don't "contain" very much these days, do they? 🙂

    1. Stop flooding the reactors with water, already. Fill them with borated sand, right to the top. Fill the Torus and basement with concrete. Fill the buildings with concrete. Build a sarcophagus over Buildings1,2,3,&4.
    2. Build cooling towers next to the sarcophagus. Build cofferdam around sarcophagus. Drill extraction wells inside cofferdam on ocean side to remove hot water that has come into contact with underground corium. Water is cooled in cooling towers. Injection wells, inside cofferdam on uphill side of sarcophagus, replace…

    • PhilipUpNorth PhilipUpNorth

      …replace cooled water in the ground. This is a closed loop heat sink. This work should be well along by now.

    • We Not They Finally

      Yes, OF COURSE they should have resorted long since, early on, to boron and cement, which I believe was what happened at Chernobyl and they STILL had massive ongoing contamination, but probably LESS. The Japanese hubris has been to try and save THE NUCLEAR INDUSTRY — not the people, not the land, not the ocean, not the world.

      • We Not They Finally

        Japans efford to save only its nuclear industry and to turn a mean shoulder to its suffering citizens is beyond pathetic..Japn has even less regard for the citizens of the world…No regard for the worlds ecology its oceans and its forgetting the utter importance of the critical law of homeostasis which is the way life is balanced from the tiniest cell to mighty planets in our universe.As the world loses its atmosphere and the world end up like a modern day mars…

  • We Not They Finally

    I, too, do not understand "300%" as opposed to "1%" percent — just that it is obviously three hundred times worse! Who has quantified how much RADIOACTIVITY that comes out to, the kinds of isotopes, whether they are released to the atmosphere or the earth or the ocean? And for HOW LONG? One thing highly disturbing all along is periodic articles like "It's 50 times worse than TEPCO's original estimate," and the like. But that's still about the MAGNITUDE of the disaster, not a QUANTITATIVE measure. And how vulnerable the whole rest of the world is, or is not, from that and from ONGOING emissions. It's become like "It's so much everywhere that there is no way to quantify it." And that may well be the truth! But for laymen, at least, more quantitative analysis would be helpful.

    • Okay.. now, the figured that only a small amount would leak… out possibly a single small hole. Right?
      Only problem..? You have BIG HOLES.. in multiple reactors! ALL the contents goes OUT… again, a small problem to figure.. as you are pouring water INTO these steam generators… NON-STOP !!
      What they are figuring… they are getting a total of the filled former reactors worth three times over being turned to gas and waste-water exiting… or just plain running down and through the basement and then out into the ocean… picking up radioactive contents as they do so.. EVERY SINGLE DAY! 300% times 365 DAYS a YEAR !!!!

      • And…? Just for the record…? THEY UNDER-STATE THE CASE!!!
        They don't even mention that the corium heats stuff so hot that you got METALS that are RADIOACTIVE that got heated-turned to A GAS that are going out the tops of these as well!!! Now, add the ground water that's chasing the corium deep into the earth.. the added stuff down there making radioactive METHANE that vents-out the many fissures the site now has… plus random large holes.. like this one!

        and you can see how it's now all-but IMPOSSIBLE to even get a true figure of what's venting now.. as some holes the corium vents out are a whopping 60 KM from the plant now!

        • I agree with this assessment that the fuel is essentially so hot it is 'vaporizing' (?) or something like that in places around and/or under the plant.

          My immediate concern remains the spent fuel pools because although we may survive Daiichi, we will not survive multiple plant uncontrolled meltdowns….

          What is going on with the cooling on the pools?

          Anyone have an opinion?

          • They never got the cooling going.. and the power issue got worse.. and they lost all temp sensors.. so.. Is no way at present time for me to even get a look in to it. It's bad.. as both TBS and Tepco scam-cam are previously recorded loops. They so fuggled there today, that they let the light go out before they shut-down the gas burner… that's not like them… they hide that bad-boy with diligence!

          • PhilipUpNorth PhilipUpNorth

            Keep in mind in the coming years that the new fuel assemblies pulled from SFP4 were covered with highly contaminated grit. (Nobody has made the connection between this grit and the highly radioactive black grit found along roads, yet, but someone probably will). As they attempt to empty SFP1,2,3,&4, they will find that a majority of the spent fuel assemblies are burned and damaged. Just handling them will dump their half-a-ton of fuel pellets onto the floor of the pools, resulting in moderated criticalities. And making further attempts to remove fuel nearly impossible.

            As for the corium, ground water will continue to carry much of it into the ocean for years. Arnie could do us all a favor: It is now time to compile the estimates of Fukushima releases from ground water and air, for all the isotopes, so that the human race can begin to understand just how contaminated each cubic meter of ocean, and each square meter of land is on Planet Earth from the Fukuplex Catastrophy.

            • Sol Man

              My heart is so heavy, you know that it is more than your imagine can conjure and there is no way of stopping or slowing. It is beyond nightmare, but that is exactly the road of the current program.

              • PhilipUpNorth PhilipUpNorth

                This is sad beyond words, Sol Man.
                I had been hoping that public pressure would force TEPCO, and the
                Japanese Government, or the
                United States, or the
                United Nations,
                to take decisive action to mitigate Fukushima.
                Freeze the coriums with liquid nitrogen,
                build cofferdams surrounding Units1,2,3,&4, or
                build a Fukushima Sarcophagus.
                But as the years drag on,
                I am forced to realize that Fukushima will contaminate the Whole Earth
                for generations to come,
                pretty much without any successful remediation.
                Japan is utterly destroyed, in body, mind, and spirit,
                Destined to become a third world nation.
                The sick caring for the dying.
                Hawaii looks good in color-enhanced Hawaii Five-O photography,
                But I will probably never visit Hawaii again.
                I fear for my loved ones, living in San Francisco.
                Meanwhile, nuclear engineers design new atomic plants,
                in hopes of a Nuclear Renaissance.
                We will breath poisoned air,
                Eat poisoned food,
                Drink poisoned water,
                Try to survive our cancers,
                Because we have no choice.
                (And even little kids are dying from leukemia.)

  • gnomesang gnomesang

    you pretty much sum it up philipupnorth, adding to that, the thought of GE profiting from the plant whilst it was working and then profiting from the cancers it caused through its medical radiology division and not spending a dime to actually evacuate the children (at the very least), makes me wretch. guess the best we can do now is to cut the funding of these monster corporations and governments whose agencies that value profits over the safety of humanity. maybe that will get their attention.