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Fukushima Daiichi Site: Cesium-137 is 85 times greater than at Chernobyl Accident

Discussion in 'News & Current Events' started by Paxton25, Apr 6, 2012.

  1. Paxton25

    Paxton25 Forgiven

    +56
    Christian
    Single
    In recent times, more information about the spent fuel situation at the Fukushima-Dai-Ichi site has become known. It is my understanding that of the 1,532 spent fuel assemblies in reactor No. 304 assemblies are fresh and unirradiated. This then leaves 1,231 irradiated spent fuel rods in pool No. 4, which contain roughly 37 million curies (~1.4E+18 Becquerel) of long-lived radioactivity. The No. 4 pool is about 100 feet above ground, is structurally damaged and is exposed to the open elements. If an earthquake or other event were to cause this pool to drain this could result in a catastrophic radiological fire involving nearly 10 times the amount of Cs-137 released by the Chernobyl accident.

    The infrastructure to safely remove this material was destroyed as it was at the other three reactors. Spent reactor fuel cannot be simply lifted into the air by a crane as if it were routine cargo. In order to prevent severe radiation exposures, fires and possible explosions, it must be transferred at all times in water and heavily shielded structures into dry casks.. As this has never been done before, the removal of the spent fuel from the pools at the damaged Fukushima-Dai-Ichi reactors will require a major and time-consuming re-construction effort and will be charting in unknown waters. Despite the enormous destruction cased at the Da–Ichi site, dry casks holding a smaller amount of spent fuel appear to be unscathed.

    Based on U.S. Energy Department data, assuming a total of 11,138 spent fuel assemblies are being stored at the Dai-Ichi site, nearly all, which is in pools. They contain roughly 336 million curies (~1.2 E+19 Bq) of long-lived radioactivity. About 134 million curies is Cesium-137 — roughly 85 times the amount of Cs-137 released at the Chernobyl accident as estimated by the U.S. National Council on Radiation Protection (NCRP). The total spent reactor fuel inventory at the Fukushima-Daichi site contains nearly half of the total amount of Cs-137 estimated by the NCRP to have been released by all atmospheric nuclear weapons testing, Chernobyl, and world-wide reprocessing plants (~270 million curies or ~9.9 E+18 Becquerel).

    It is important for the public to understand that reactors that have been operating for decades, such as those at the Fukushima-Dai-Ichi site have generated some of the largest concentrations of radioactivity on the planet.

    Fukushima Daiichi Site: Cesium-137 is 85 times greater than at Chernobyl Accident » Akio Matsumura
     
  2. Steve Petersen

    Steve Petersen Senior Veteran

    +1,730
    Non-Denom
    US-Libertarian
    It might be worth remembering that we NUKED 2 Japanese cities in WWII. They were rebuilt and millions still live there today.
     
  3. Theofane

    Theofane Guest

    +0
    How many died? What was the scale of the destruction?
     
  4. Blackwater Babe

    Blackwater Babe Well-Known Member

    +224
    Catholic
    US-Libertarian
    Theres a fair difference in volume between fallout from a fission weapon, and fallout from melted down reactor fuel rods, plus contamination from the spent fuel storage area that leaked.
     
  5. marshlewis

    marshlewis Well-Known Member

    +167
    Atheist
    about 300,000 deaths within the first few days. the destruction was vast.

    In comparing it to the recent meltdown its like apples and oranges.
    A weapon has a few kilos of radioactive material while a reactor hast tens of thousands of kilos of radioactive materials.

    I think the important thing to remember is that 4 reactors melted down. thats 4 times worse than cheranobal.
     
  6. SithDoughnut

    SithDoughnut The Agnostic, Ignostic, Apatheistic Atheist

    +247
    Atheist
    Private
    Well it's a good job no one lives inside the fuel assemblies at the daiichi plant then, isn't it?
     
  7. Wayte

    Wayte Oh, you know. Some guy.

    +88
    Atheist
    In Relationship
    US-Democrat
    Did those 4 reactors explode? Because a big part of what made chernobyl so catastrophic was the fact the reactor overpressurized and actually popped its pressure boundary, literally spraying radioactive materials into the air and onto the wind. Even 4 meltdowns wouldn't be as bad, because at least then there's still containment put in place specifically to prevent radiation getting out in the event of an accident.
     
  8. Nabobalis

    Nabobalis Guest

    +0
    BBC News - How does Fukushima differ from Chernobyl?

     
  9. marshlewis

    marshlewis Well-Known Member

    +167
    Atheist
    I dont know the answer to this Im afraid. If what you say is true then 4 meltdowns would not be as bad.
     
  10. marshlewis

    marshlewis Well-Known Member

    +167
    Atheist
  11. Drekkan85

    Drekkan85 Immortal until proven otherwise

    +219
    Anglican
    Private
    CA-Liberals
    Per: Open Thread 22 « BraveNewClimate

    More people have likely died from the evacuation of the town then will die in the long term (or in the short term) from the radiation exposure they've had. The increased exposure of radiation is approximately the same as if the residents had moved from their sea level town to Denver and lived there for several years.
     
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