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Thread: Japanese reactors, why not use concrete?

  1. #1 Japanese reactors, why not use concrete? 
    Forum Ph.D. Raziell's Avatar
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    My teacher said the strongest radiation still cant go through several meters of concrete. But if it stops there why not use tonns of concrete and dump it on the reactors.... then... dunno, make like samurai statues of them to make it look nice?

    I just know a little from school about radiation, but we had about the 3 types of radiation. Alpha, beta and charlie particles i think. Were the strongest particles are stopped by paper, second strongest by glass, and third can go through concrete - several meters of it, but that this was the weakest form of it? (stronger particles = bigger molecules = easier stopped by obstacles?)

    What seperates normal radiation from that which comes from a nuclear reactor under a meltdown?


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  3. #2 Re: Japanese reactors, why not use concrete? 
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    Quote Originally Posted by Raziell
    My teacher said the strongest radiation still cant go through several meters of concrete. But if it stops there why not use tonns of concrete and dump it on the reactors.... then... dunno, make like samurai statues of them to make it look nice?
    The disposal of high level waste is not as simple as encasing it in concrete. Some of it could still leak out.

    I just know a little from school about radiation, but we had about the 3 types of radiation. Alpha, beta and charlie particles i think. Were the strongest particles are stopped by paper, second strongest by glass, and third can go through concrete - several meters of it, but that this was the weakest form of it? (stronger particles = bigger molecules = easier stopped by obstacles?)
    That's alpha, beta and gamma. Gamma isn't particles, it's rays like x-rays. That's why it is harder to stop. The particles are a health hazard because you can ingest them, then they can cause a lot of ionization in your body.
    What seperates normal radiation from that which comes from a nuclear reactor under a meltdown?
    Nothing. There is just more of it concentrated in one place.


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  4. #3 Re: Japanese reactors, why not use concrete? 
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    Quote Originally Posted by Harold14370
    Quote Originally Posted by Raziell
    My teacher said the strongest radiation still cant go through several meters of concrete. But if it stops there why not use tonns of concrete and dump it on the reactors.... then... dunno, make like samurai statues of them to make it look nice?
    The disposal of high level waste is not as simple as encasing it in concrete. Some of it could still leak out.

    I just know a little from school about radiation, but we had about the 3 types of radiation. Alpha, beta and charlie particles i think. Were the strongest particles are stopped by paper, second strongest by glass, and third can go through concrete - several meters of it, but that this was the weakest form of it? (stronger particles = bigger molecules = easier stopped by obstacles?)
    That's alpha, beta and gamma. Gamma isn't particles, it's rays like x-rays. That's why it is harder to stop. The particles are a health hazard because you can ingest them, then they can cause a lot of ionization in your body.
    What seperates normal radiation from that which comes from a nuclear reactor under a meltdown?
    Nothing. There is just more of it concentrated in one place.
    Thanks for the answer. Hope theyll manage to fix it in some way :| Dreadfull stuff
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  5. #4 Re: Japanese reactors, why not use concrete? 
    Moderator Moderator Dishmaster's Avatar
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    Quote Originally Posted by Raziell
    My teacher said the strongest radiation still cant go through several meters of concrete. But if it stops there why not use tonns of concrete and dump it on the reactors.... then... dunno, make like samurai statues of them to make it look nice?
    This only buries the material and probably prevents it from being airborne for a while. But the radioactive material is extremely hot and can melt through concrete and may even enter the ground. If it doesn't stop, it may even pollute water carrying layers. So, even if you bury it under concrete, the problem does not disappear.
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  6. #5  
    Forum Radioactive Isotope MagiMaster's Avatar
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    It's really hilarious watching all the people in the US flipping out over this, when you realize how the people in Japan are taking it.
    - The top story on (US) Slashdot was about the Japanese reactors
    - The top story on the Japanese Slashdot page was an Angry Birds discussion.

    The reactors over there are not leaking nearly as badly as the media is portraying it. Also, they're all competently manned and they already know exactly what to do to get things under control, even if that's taking a little while. (Dumping concrete all over it isn't on the list.)
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  7. #6  
    Moderator Moderator Dishmaster's Avatar
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    Quote Originally Posted by MagiMaster
    It's really hilarious watching all the people in the US flipping out over this, when you realize how the people in Japan are taking it.
    - The top story on (US) Slashdot was about the Japanese reactors
    - The top story on the Japanese Slashdot page was an Angry Birds discussion.

    The reactors over there are not leaking nearly as badly as the media is portraying it. Also, they're all competently manned and they already know exactly what to do to get things under control, even if that's taking a little while. (Dumping concrete all over it isn't on the list.)
    Excuse me? Are you follwing the discussion in Germany? Several reactors are being shut down right now in response to this desaster.

    And to me (and many others) it does not look like there is anything under control whatsoever at Fukushima!
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  8. #7  
    Forum Ph.D. Raziell's Avatar
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    Well... read the newspaper and it seems the japanese is considering concrete now actually. I should get a job as prophet
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  9. #8  
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    Japanese officials have studied a plan to dump tons of sand and concrete on the plant to encase it, putting out any fires and preventing further radiation from escaping, Nishiyama said. But he said they have ruled out such a course as "not a realistic option" and will focus instead on restoring power and cooling fuel.
    http://www.cnn.com/2011/WORLD/asiapc...iref=allsearch
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  10. #9  
    Forum Radioactive Isotope MagiMaster's Avatar
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    Quote Originally Posted by Dishmaster
    Quote Originally Posted by MagiMaster
    It's really hilarious watching all the people in the US flipping out over this, when you realize how the people in Japan are taking it.
    - The top story on (US) Slashdot was about the Japanese reactors
    - The top story on the Japanese Slashdot page was an Angry Birds discussion.

    The reactors over there are not leaking nearly as badly as the media is portraying it. Also, they're all competently manned and they already know exactly what to do to get things under control, even if that's taking a little while. (Dumping concrete all over it isn't on the list.)
    Excuse me? Are you follwing the discussion in Germany? Several reactors are being shut down right now in response to this desaster.

    And to me (and many others) it does not look like there is anything under control whatsoever at Fukushima!
    Germany?

    Anyway, I didn't say they weren't leaking, but the people in California flipping out are definitely overreacting. DrRocket posted a good news link around here somewhere that explained things pretty clearly. Things are in fact mostly under control. Three reactors have been flooded, three were not running at the time. Most of the remaining danger has nothing to do with the reactors themselves, but the nuclear waste stored at the site. Everything I've seen suggests the danger zone is measured in miles, not continents.
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