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Thread: Fukushima fuel rods may have completely melted

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    Fukushima fuel rods may have completely melted

    Previously, the firm had said that only some of the fuel had burned through its inner pressure vessel and dropped into the containment vessel.
    "Almost no fuel remains at its original position," Tepco said. The simulation shows that the fuel may have penetrated the concrete floor by up to 65cm, just 37cm from the reactor's outer steel wall.
    Tepco said that about 60% of the fuel in the two other reactors that experienced meltdown had dropped onto the concrete base, but had caused less damage.

    Fukushima fuel rods may have completely melted | World news | guardian.co.uk

    "Decommissioning will take 30 years" and where will the decommissioned waste from Daiichi 1, 2, and 4 actually go? And what about the water being contaminated on a daily basis? Is the ocean that large to contain it? Does it seem like all these Nuclear "geniuses" designing, planning, organizing, constructing and operating either have a screw loose or can't recognize human fallibility? Do any nuclear plants have a fail safe cooling system like an uphill lake, biomass steam generated power supply to pump coolant, or what? If huge solar flares cause power failures on a National level, what is the backup? If EMP device is detonated, what is the backup? Is insanity endemic in the Nuclear Industry?

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    Re: Fukushima fuel rods may have completely melted

    Quote Originally Posted by DaveFagan View Post
    Previously, the firm had said that only some of the fuel had burned through its inner pressure vessel and dropped into the containment vessel.
    "Almost no fuel remains at its original position," Tepco said. The simulation shows that the fuel may have penetrated the concrete floor by up to 65cm, just 37cm from the reactor's outer steel wall.
    Tepco said that about 60% of the fuel in the two other reactors that experienced meltdown had dropped onto the concrete base, but had caused less damage.

    Fukushima fuel rods may have completely melted | World news | guardian.co.uk

    "Decommissioning will take 30 years" and where will the decommissioned waste from Daiichi 1, 2, and 4 actually go? And what about the water being contaminated on a daily basis? Is the ocean that large to contain it? Does it seem like all these Nuclear "geniuses" designing, planning, organizing, constructing and operating either have a screw loose or can't recognize human fallibility? Do any nuclear plants have a fail safe cooling system like an uphill lake, biomass steam generated power supply to pump coolant, or what? If huge solar flares cause power failures on a National level, what is the backup? If EMP device is detonated, what is the backup? Is insanity endemic in the Nuclear Industry?
    stupidity at least. it never was a very good idea to build a big nuclear pile just to boil water for a steam generator. the cost/KwH is very high without factoring in the cost of accidents.

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    Re: Fukushima fuel rods may have completely melted

    thanks for posting this Dave.
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    Re: Fukushima fuel rods may have completely melted

    Quote Originally Posted by DaveFagan View Post
    Previously, the firm had said that only some of the fuel had burned through its inner pressure vessel and dropped into the containment vessel.
    "Almost no fuel remains at its original position," Tepco said. The simulation shows that the fuel may have penetrated the concrete floor by up to 65cm, just 37cm from the reactor's outer steel wall.
    Tepco said that about 60% of the fuel in the two other reactors that experienced meltdown had dropped onto the concrete base, but had caused less damage.

    Fukushima fuel rods may have completely melted | World news | guardian.co.uk

    "Decommissioning will take 30 years" and where will the decommissioned waste from Daiichi 1, 2, and 4 actually go? And what about the water being contaminated on a daily basis? Is the ocean that large to contain it? Does it seem like all these Nuclear "geniuses" designing, planning, organizing, constructing and operating either have a screw loose or can't recognize human fallibility? Do any nuclear plants have a fail safe cooling system like an uphill lake, biomass steam generated power supply to pump coolant, or what? If huge solar flares cause power failures on a National level, what is the backup? If EMP device is detonated, what is the backup? Is insanity endemic in the Nuclear Industry?
    You are exposed to more radiation by your local coal power plant than you would have been living in Tokyo.
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    Re: Fukushima fuel rods may have completely melted

    Quote Originally Posted by DaveFagan View Post
    "Decommissioning will take 30 years" and where will the decommissioned waste from Daiichi 1, 2, and 4 actually go?
    We had a saying on the ship "dilution is the solution to pollution". What people may not realize is that water acts as a coolant for reactors, but it also provides some pretty good shielding.

    Quote Originally Posted by DaveFagan View Post
    And what about the water being contaminated on a daily basis? Is the ocean that large to contain it?
    Don't know what Japan is going to do with their waste water. But yes, the ocean is large enough to contain it easily, even if they only used that as their dump for nuclear waste (not likely to be the case though).

    Quote Originally Posted by DaveFagan View Post
    Does it seem like all these Nuclear "geniuses" designing, planning, organizing, constructing and operating either have a screw loose or can't recognize human fallibility?
    Or maybe you just don't realize what those "geniuses" have in place to help backup nuclear reactors.

    For instance, many reactors have automatic shutdowns upon loss of power and/or a "scram". Little info for ya.

    Scram - Wikipedia, the free encyclopedia

    So yes, those "geniuses" actually do think of human fallibility, they just don't inform the world about every single precaution they have in place, especially here in the US, because not all human faults result in accidents, some cause intentional problems.

    Quote Originally Posted by DaveFagan View Post
    Do any nuclear plants have a fail safe cooling system like an uphill lake, biomass steam generated power supply to pump coolant, or what?
    Yes.

    Quote Originally Posted by DaveFagan View Post
    If huge solar flares cause power failures on a National level, what is the backup?
    If you're talking about solar flares taking out power, then the backup is the fact that the natural state of most, if not all, reactors is going to be shutdown. They are designed (especially here in the US) to take into account that problems may occur, especially after TMI, and there may not be someone who can safely shutdown the reactor(s).

    Quote Originally Posted by DaveFagan View Post
    If EMP device is detonated, what is the backup?
    Shutdown will occur. Reactor stops making radiation causing events.

    Quote Originally Posted by DaveFagan View Post
    Is insanity endemic in the Nuclear Industry?
    Why would you think this to begin with? Have we not had devastating disasters with other energy sources? Do we not have devastating natural disasters occur that cause a lot of damage on a pretty regular basis (mere years apart)?

    It is one thing to say that the nuclear energy community of the world could do a better job at ensuring that there are backups and good contingency plans in place to try to prevent incidents like the one in Japan from occurring and/or becoming that bad. It is quite another to accuse the majority, if not the whole, nuclear community of being insane simply because you have no idea what the fail-safes and/or backup plans are, especially here in the US, if something did occur.
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    Re: Fukushima fuel rods may have completely melted

    All of the deaths and lives cut short caused by nuclear accidents pales in comparison to the annual number of people who die as a result of mining coal or breathing in coal emissions.
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    Re: Fukushima fuel rods may have completely melted

    If some madmen detonated a 1 megaton nuclear warhead in the upper atmosphere above say Ks, right in the heart of America, and hit the country with an EMP blast, the last worry you'll have is if the reactors shut down right. You'd be worrying about survival as society would cease and hell would unleash. You could easily see half the US population dying from the aftermath. Starvation, disease, violence, fires... hell would be the name of this land, and cursed would be it's people. (actually, to do a proper EMP attack you'd use three 1MT warheads, west coast, central, east coast. Just to cover all possibilities.
    Climate, changes. It takes a particularly uneducated population to buy into the idea that it's their fault climate is changing and further political solutions can fix it.



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    Re: Fukushima fuel rods may have completely melted

    EMP damage is not permanent, you understand that right. That concept is nothing more than a Hollywood fantasy. While it would impact the area, things could be rebuilt and electricity would be restored.

    Furthermore, the range of a 1 megaton be approximately 300 mile radius from the detonation point. So one detonation over middle American w/ a 1 megaton nuke will not result in a coast to coast EMP. Also, you need a sophisticated delivery system. MAD strategy would certainly be applicable in this scenario.

    This was tested with the Starfish Prime detonation prior to the prohibition of above ground nuclear testing.
    Last edited by Fishstyx; 12-04-11 at 12:23 PM.

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    Re: Fukushima fuel rods may have completely melted

    Wonders how a thread about the Fukushima meltdown and consequences got turned into a thread on nuclear warfare. LOL.
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    Re: Fukushima fuel rods may have completely melted

    I'd like to see us take a closer look at thorium. From what I've read, it seems to have some potential.

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