Foot-long piece of concrete emitting almost 1 Sievert/hour found near No. 3 reactor

Published: April 23rd, 2011 at 6:46 pm ET
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TEPCO: Highly radioactive concrete fragment found, NHK, April 24, 2011:

The operator of the damaged Fukushima Daiichi nuclear power plant says that concrete debris emitting a high level of radiation has been found near the Number 3 reactor.

Tokyo Electric Power Company, or TEPCO, says its workers detected radioactivity of 900 millisieverts per hour being emitted from a 30-by-30 centimeter concrete fragment, 5 centimeters thick, on Wednesday. …

The utility believes the contaminated fragment could be part of debris scattered across the compound as a result of a hydrogen explosion at the Number 3 reactor.

Video here.

Published: April 23rd, 2011 at 6:46 pm ET
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26 comments

Related Posts

  1. Highest Radiation Levels Yet: 1,000 millisieverts/hour found on debris outside Reactor No. 3 May 21, 2011
  2. Fukushima Worker: Concrete, rebar falling off at Reactor No. 3 July 22, 2012
  3. Debris found on a nearby mountain has radioactivity of 300 millisieverts/hour April 24, 2011
  4. NHK: “This is a very severe accident” — Nuclear fuel at Reactor No. 1 may have melted through 65 cm of concrete… Only 37 cm at thinnest point (PHOTOS) November 30, 2011
  5. Japan gets a Banksy? Smoking Fukushima reactors appear on famous 100 foot long painting in Tokyo train station (PHOTO) May 2, 2011

26 comments to Foot-long piece of concrete emitting almost 1 Sievert/hour found near No. 3 reactor

  • To fit the data on the web page I have moved some redundant columns .

    I removed the half-life column which the EPA results report as 24131 years for Plutonium-239 and for 87.75 years for Plutonium-238.

    I have also removed the unit column as all amounts reported are pCi/m3 or picocuries per cubic meter.

    CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
    GUAM GU 3/19/2011 3/31/2011 Plutonium-239 0.000012
    SAIPAN CNMI 3/21/2011 3/31/2011 Plutonium-239 0.000009
    SAN FRANCISCO CA 3/18/2011 3/24/2011 Plutonium-239 0.0000065
    NOME AK 3/20/2011 3/31/2011 Plutonium-238 0.0000035
    SEATTLE WA 3/18/2011 3/24/2011 Plutonium-238 0.0000025
    RIVERSIDE CA 3/15/2011 3/24/2011 Plutonium-238 0.0000013
    RIVERSIDE CA 3/15/2011 3/24/2011 Plutonium-239 0.0000013
    SAIPAN CNMI 3/21/2011 3/31/2011 Plutonium-238 0
    SAIPAN CNMI 3/24/2011 3/31/2011 Plutonium-239 0
    NOME AK 3/20/2011 3/31/2011 Plutonium-239 0
    SEATTLE WA 3/18/2011 3/24/2011 Plutonium-239 -0.0000013
    ANAHEIM CA 3/15/2011 3/24/2011 Plutonium-239 -0.0000015
    DUTCH HARBOR AK 3/19/2011 3/31/2011 Plutonium-239 -0.0000023
    ANAHEIM CA 3/15/2011 3/24/2011 Plutonium-238 -0.000003
    SAN FRANCISCO CA 3/18/2011 3/24/2011 Plutonium-238 -0.0000037
    KAUAI HI 3/21/2011 3/31/2011 Plutonium-239 -0.0000043
    DUTCH HARBOR AK 3/19/2011 3/31/2011 Plutonium-238 -0.0000069
    SAIPAN CNMI 3/24/2011 3/31/2011 Plutonium-238 -0.000008
    GUAM GU 3/19/2011 3/31/2011 Plutonium-238 -0.000008

    Strontium Results

    Update 1:07 EST April, 22nd 2011

    Strontium-89 and 90 were detected in Environmental Matrices.

    Again the half-life column has been removed to fit the data on this page. The EPA reports the half-life for the Strontium-89 is 50.55 years and the half-life for the Strontium-90 at 28.6 years.

    All Strotium detections were from the RadNet Radiation Alert Network.

    Agian all units reported are pCi/m3 or picocuries per cubic meter.

    CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
    ANAHEIM CA 3/18/2011 3/18/2011 Strontium-89 0.0008
    ANAHEIM CA 3/18/2011 3/18/2011 Strontium-89 0.0008
    ANAHEIM CA 3/18/2011 3/18/2011 Strontium-89 0.0008
    ANAHEIM CA 3/18/2011 3/18/2011 Strontium-89 0.0008
    RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-90 0.00011
    RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-90 0.00011
    RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-90 0.00011
    RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-90 0.00011
    RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-89 -0.00013
    RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-89 -0.00013
    RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-89 -0.00013
    RIVERSIDE CA 3/18/2011 3/18/2011 Strontium-89 -0.00013
    ANAHEIM CA 3/18/2011 3/18/2011 Strontium-90 -0.00036
    ANAHEIM CA 3/18/2011 3/18/2011 Strontium-90 -0.00036
    ANAHEIM CA 3/18/2011 3/18/2011 Strontium-90 -0.00036
    ANAHEIM CA 3/18/2011 3/18/2011 Strontium-90 -0.00036

    Cesium Results

    Update 1:29 EST April, 22nd 2011

    I will be posting the cesium results in 3 seperate tables – Air, Milk and Rain so the data can be fit here.

    All Cesium samples were detected using Gamma Spectrometry.
    Cesium Air Result

    All units for cesium air samples are pCi/m3.

    CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
    NOME AK 3/24/2011 3/24/2011 Cesium-134 0.144 PCI/M3
    NOME AK 3/24/2011 3/24/2011 Cesium-137 0.1261 PCI/M3
    KAHUKU HI 3/21/2011 3/21/2011 Cesium-137 0.116 PCI/M3
    NOME AK 3/24/2011 3/24/2011 Cesium-137 0.115 PCI/M3
    KAHUKU HI 3/21/2011 3/21/2011 Cesium-134 0.0929 PCI/M3
    KAHUKU HI 3/21/2011 3/21/2011 Cesium-137 0.0915 PCI/M3
    DUTCH HARBOR AK 3/22/2011 3/22/2011 Cesium-137 0.0876 PCI/M3
    KAUAI HI 3/21/2011 3/21/2011 Cesium-137 0.086 PCI/M3
    KAUAI HI 3/21/2011 3/21/2011 Cesium-134 0.0788 PCI/M3
    KAUAI HI 3/21/2011 3/21/2011 Cesium-137 0.0752 PCI/M3
    DUTCH HARBOR AK 3/22/2011 3/22/2011 Cesium-134 0.072 PCI/M3
    SAIPAN CNMI 3/21/2011 3/21/2011 Cesium-134 0.068 PCI/M3
    DUTCH HARBOR AK 3/19/2011 3/19/2011 Cesium-137 0.0625 PCI/M3
    BOISE ID 3/23/2011 3/23/2011 Cesium-137 0.0618 PCI/M3
    LAS VEGAS NV 3/24/2011 3/24/2011 Cesium-137 0.058 PCI/M3
    DUTCH HARBOR AK 3/22/2011 3/22/2011 Cesium-137 0.053 PCI/M3
    DUTCH HARBOR AK 3/19/2011 3/19/2011 Cesium-137 0.053 PCI/M3
    LAS VEGAS NV 3/21/2011 3/21/2011 Cesium-134 0.0516 PCI/M3
    LAS VEGAS NV 3/21/2011 3/21/2011 Cesium-137 0.0477 PCI/M3
    Cesium Milk Results

    All amounts are pCi/L.
    CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
    HILO HI 4/4/2011 4/4/2011 Cesium-134 24.3
    HILO HI 4/4/2011 4/4/2011 Cesium-137 19.1
    MONTPELIER VT 3/30/2011 3/30/2011 Cesium-137 1.91
    RENO NV 4/4/2011 4/4/2011 Cesium-137
    BUFFALO NY 4/1/2011 4/1/2011 Cesium-137
    DOVER DE 4/1/2011 4/1/2011 Cesium-137
    ATHENS TN 3/31/2011 3/31/2011 Cesium-137
    CINCINNATI OH 3/31/2011 3/31/2011 Cesium-137
    CLEVELAND OH 3/31/2011 3/31/2011 Cesium-137
    KNOXVILLE TN 3/31/2011 3/31/2011 Cesium-137
    PITTSBURGH PA 3/31/2011 3/31/2011 Cesium-137
    RENO NV 3/31/2011 3/31/2011 Cesium-137
    TRENTON NJ 3/31/2011 3/31/2011 Cesium-137
    BALTIMORE MD 3/30/2011 3/30/2011 Cesium-137
    CHARLESTON WV 3/30/2011 3/30/2011 Cesium-137
    DALLAS TX 3/30/2011 3/30/2011 Cesium-137
    JEFFERSON CITY MO 3/30/2011 3/30/2011 Cesium-137
    LITTLE ROCK AR 3/30/2011 3/30/2011 Cesium-137
    LOUISVILLE KY 3/30/2011 3/30/2011 Cesium-137

    Cesium Rain

    All amounts are pCi/L.

    CITY STATE COLLECT END RESULT DATE ANALYTE NAME AMOUNT
    BOISE ID 3/27/2011 3/27/2011 Cesium-134 42
    BOISE ID 3/27/2011 3/27/2011 Cesium-137 36.4
    BOISE ID 3/27/2011 3/27/2011 Cesium-137 35.6
    BOISE ID 3/27/2011 3/27/2011 Cesium-134 34.3
    BOISE ID 3/22/2011 3/22/2011 Cesium-137 11.6
    BOISE ID 3/22/2011 3/22/2011 Cesium-134 11.2
    OAK RIDGE/Y12 E TN 4/4/2011 4/4/2011 Cesium-137 2.1
    JACKSONVILLE FL 3/31/2011 3/31/2011 Cesium-134 1.45
    SALT LAKE CITY UT 3/28/2011 3/28/2011 Cesium-134 1.45
    OAK RIDGE/Y12 E TN 3/31/2011 3/31/2011 Cesium-137 1.44
    OAK RIDGE/MELTON TN 3/28/2011 3/28/2011 Cesium-137 1.42
    OAK RIDGE/MELTON TN 3/28/2011 3/28/2011 Cesium-134 1.33
    OAK RIDGE/Y12 E TN 3/31/2011 3/31/2011 Cesium-134 1.28
    OAK RIDGE/K25 TN 3/31/2011 3/31/2011 Cesium-137 1.21
    LANSING MI 4/4/2011 4/4/2011 Cesium-137 1.15
    JACKSONVILLE FL 3/31/2011 3/31/2011 Cesium-137 1.09
    SALT LAKE CITY UT 3/28/2011 3/28/2011 Cesium-137 1.09
    OAK RIDGE/MELTON TN 3/31/2011 3/31/2011 Cesium-137 0.87
    LITTLE ROCK AR 3/28/2011 3/28/2011 Cesium-137 0.6


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    • WindorSolarPlease

      To tell you the truth… Math and I, never connected.

      These numbers are very confusing.

      However, when I see the words Plutonium, Strontium, Cesium, I know they have no business being in the air, water, food, or anything else, no matter what the amounts are.
      Thank you for posting


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    • Mothra

      Municipal water is treated with fluoride and chlorine. Iodine is aerosolized by chlorine vapor for the inhalation pathway and strontium and cesium bond to fluoride for the ingestion pathway.


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      • Jack

        Have you been Hip to the Shower-head filter to stop
        the chlorine gas exposure on your head/in your face?


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        • Mothra

          I installed ion exchange with activated coconut carbon capable of .3 micron filtration in the bathroom shower and sink and kitchen a month ago. I also have RO with pre and post carbonin the kitchen. This week I’m going to put an inline filter on the washing machine and dishwasher – I’m waiting for a compression tee adapters on order.


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          • Noah

            Aggressive Response Required
            Fine example Mothra

            Pre-filtration inline carbon will help absorb the chlorine volatilized I-131.
            Good job Mothra!

            I hope others will follow your example.

            A short message to all nations

            Taking aggressive protective action will translate the fight/flight adrenal response into genuine value.

            Let’s use the anger we feel and channel it into this kind of positive action. Our genetic future is at stake.


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    • beyond tomorrow

      Multiply them numbers by the day, times 9 months ! We know it will really be years !


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  • Jack

    Interesting to visualize that “piece of concrete” as a piece
    of Sponge Bob, emitting what had previously been absorbed.
    Like driveway concrete, they warn ya to buy and apply the Sealer,
    to keep your pad from soaking up nasty oils and solvents, etc.
    So this particular square is Newsworthy, given the top-secret
    Zircon-Clad Mox Fuel Burning rods…(WWhoa, Dude…HOT RODS!)
    are apparently off-limits for discussion….
    this piece of concrete has gotta be one of a thousand deadly chunks.


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  • mr. x

    This piece of concrete should become the throne of the Japanese Emperor. It’s healthy radiation, right?


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  • bluejayway

    wonderful. this is a contamination problem with no end in sight.


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  • noradmama

    Mothra- Please recommend a good water filter! I currently have a multipure RO system but it seems I need something more powerful now. Also, recommend a whole house filtration method and what shower filter did you buy for shower and sinks? Help! I have little kids…. And on a tight budget… Thanks in advance for the names and the links….


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    • Mothra

      My budget concerns were yours too (hello tax season – I owed). Every system has it’s pros and cons, but RO with pre and post carbon and ion exchange with activated carbon are the radionclude rated answer via EPA. For pristine water – you’d need both. Whole house systems are spendy and not suited for multi-unit dwellers, plus their membranes need to be replaced more often increasing maintenance per gallon costs going forward. So, it depends on where you live, your municipal water supply reports and your situation. I’m in SF, we have pesticides and chlorides here. No matter what’s in the SF source water (pretty ok considering our size), our transmission pipes are vintage and historic anyway. That said, I chose RO with pre/post carbon for the kitchen sink cooking and drinking water (Pure Water made mine – there are others). Another post filter too: ion exchange with coconut carbon (Aquasana had an April promo 30 % off plus no tax and free shipping, glass container and filter discount deal – so I chose them). Two step kitchen. In the bathroom I installed another under counter sink model (for aesthetics) and a showerhead model, plus two inline carbon filters for dishwasher and washing machine ( I stayed with AQ systems for these because of a package discount). I’d call them. I can’t filter at the main, or I may have. If I had to choose: I’d go with most important: Shower carbon, and RO pre/post carbon in the kitchen. Followed by ion exchange carbon bathroom sink, then ion exchange carbon in kitchen and last, inline carbon on dishwasher then washing machine, and fridge ice maker. OR just whole house ion exchange carbon at your main, additional RO with pre/post carbon on kitchen sink. The basics (shower filter, plus ion exchange with carbon at kitchen sink) can run you under $200 right now. OMG – pretty hair and skin with just those too :) . Just use the kitchen or shower filter for tooth cleaning though – ok?


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      • planning plans....

        @ Mothra,
        That’s awesome that you are on it and now quick to share assistance with others! What kind of concerns do you have about confirming the efficacy of the whole system or about disposing of contaminated filters? Could you install easily by yourself? I understand that the water filter units can become “hot” as they are doing their important jobs? How do you know when the filter has maxed out and needs a change during this unprecedented situation?! Whew-so many considerations. Thanks!


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  • noradmama

    I am so depressed.


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    • Mothra

      I know – right? On the upside: It always feels this way before a dawning. There is usually a segment of population that bears the recognition burden first and that can feel somewhat isolating. It’s understandably hard and seriously cruddy news. Change is scary at first, but generally some of us may be healthier than we would have been before? Little steps, small effective adjustments and measures add up over time: diet, rest, exercise, hydration, hygiene. If you prepare, you can set it aside, check it like a weather report and get back to the enjoyable bits. It only feels like a mountain to scale at first, but it’s really just a meadow to cross. There are things on the other side – you’re valuable – you’re worth it.


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      • xdrfox

        It’s a mountain that is broke into gazillions of particles that one can not see floating downward indefinitely !
        It will bring renewed scares each time one we know or love fall victim (even ourselves)to this insidious horror that will forever be !

        But your words are quite beautiful and inspiriting even for the moment before the reality of the task !
        Many sure to resist procreation for risk of ugly inviable children for all time !
        But abortions will surely skyrocket after ultrasounds !


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  • sassyiam

    aawww poor little lamb:( That breaks my heart. I know it’s tough and overwhelming (4 kiddos myself) but please understand you are doing the right thing. You are informing yourself and taking action in protecting you and your family – and best yet, it is possible and even the little things you do is accomplishing that. Only crisis gives one the opportunity to display honor and integrity and your reaction as shown here, shows just that and is something to celebrate. I for one, am very proud – your children are fortunate to have you!:) Stay strong and know you’re not alone – love always conquers fear!:)


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  • xdrfox

    All the attention paid to CO2 and Carbon tax for Global warming to save the earth, and Nothing being done for this problem or radiation to save the earth !

    : |

    $$ No money to be made ! $$


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    • radegan

      Sure there is – they’ll tax people by how radioactive they are. How you got that way is a private matter between you and TEPCO, but your being radioactive is costing the taxpayers.


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