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[Various] Japan Nuclear Emergency - Continuous Coverage of Damage and Radiation Risks - Page 47  

post #461 of 2836
Quote:
Originally Posted by damric View Post
The radioactive gases are quite short-lived. The worst one is Nitrogen (I think it is N-18), but it literally decays in minutes. The hydrogen is so chemically reactive (and has such a small neutron absorption rate) that it would never escape the primary coolant. Hydrogen gas is really only a problem during a continuous control rod withdrawal casualty (don't worry it's too late for this to happen), where control rods withdrawal so fast that hydrogen explodes.

I only know all this crap because it was crammed down my throat at gunpoint at Navy Nuclear Power School
I just want to be clear here, (and no, I'm no nuclear power expert, far from it) that because of the actual fuel used to power the reactors, we're not looking at a large-scale explosion, however we could be looking at land/water contamination should it leak out, correct? Or would it be insignificant?
post #462 of 2836
Quote:
Originally Posted by Lampen View Post
Have any thoughts on the earlier explosion that largely destroyed the building surrounding Reactor One?
No idea. My guess would be a switchgear fire (arcflash). There's so much electrical controls, motors, generators, hydraulic systems, secondary steam plant systems and other crap that could explode. We had a circuit breaker blow up on the USS Nimitz in #2 reactor aux-room and it was quite the bang, though short lived. Our main danger was a bad lube-oil fire in the engine room, but we did have Halon and AFFF sprinkler systems just in case.

As bad as that sounds, I always felt safe working there. I feel not so safe at the steel mill that I work at now. I swear there is 99 ways to die everywhere I look, even the drive to work is dangerous!


Quote:
I just want to be clear here, (and no, I'm no nuclear power expert, far from it) that because of the actual fuel used to power the reactors, we're not looking at a large-scale explosion, however we could be looking at land/water contamination should it leak out, correct? Or would it be insignificant
Correct. It's not going to explode. The water isn't going to leak out either. What will leak out is the radioactive gases when they are purposely vented to atmosphere. These are short lived (hours), but they may need to vent several times until it is cooled down. The really bad stuff (heavy metal fission products) are going to stay in the coolant system. Temporarily evacuating the immediate area is not a bad idea. You wouldn't x-ray yourself for fun ~
Edited by damric - 3/12/11 at 4:51pm
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post #463 of 2836
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Quote:
Originally Posted by damric View Post
[COLOR="Sienna"]No idea. My guess would be a switchgear fire (arcflash). There's so much electrical controls, motors, generators, hydraulic systems, secondary steam plant systems and other crap that could explode. We had a circuit breaker blow up on the USS Nimitz in #2 reactor aux-room and it was quite the bang, though short lived. Our main danger was a bad lube-oil fire in the engine room, but we did have Halon and AFFF sprinkler systems just in case.
I figured as much. Japanese Government just reported that the earlier explosion that destroyed the building surrounding Reactor One was caused by a malfunction in the pumping system.
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post #464 of 2836
Quote:
Originally Posted by damric View Post
Correct. It's not going to explode. The water isn't going to leak out either. What will leak out is the radioactive gases when they are purposely vented to atmosphere. These are short lived (hours), but they may need to vent several times until it is cooled down. The really bad stuff (heavy metal fission products) are going to stay in the coolant system. Temporarily evacuating the immediate area is not a bad idea. You wouldn't x-ray yourself for fun ~
Interesting. Thank you for the clarification and the intelligent, factual posts. +Rep to you.
post #465 of 2836
Quote:
Originally Posted by GIPrice View Post
Awesome now I get to die from it too, damn radiation.
its that or the end of the world (2012)
post #466 of 2836
christ thats one hell of a pump malfunction.
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post #467 of 2836
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Originally Posted by Lazloisdavrock View Post
christ thats one hell of a pump malfunction.
^This
post #468 of 2836
Okay, I gave up reading after page #20.

Honestly, do those of us on the West Coast have to worry? I mean it sounds quite far fetched that we'd all instantly die within a week's time if it explodes all the way over there in Japan.

But it does make me worry .
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post #469 of 2836
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Originally Posted by pioneerisloud View Post
Okay, I gave up reading after page #20.

Honestly, do those of us on the West Coast have to worry? I mean it sounds quite far fetched that we'd all instantly die within a week's time if it explodes all the way over there in Japan.

But it does make me worry .
No no and no. It's 47 pages with my posts per page and i've read it all.
post #470 of 2836
Quote:
Originally Posted by Lazloisdavrock View Post
christ thats one hell of a pump malfunction.
The Main Coolant Pumps on USS Nimitz (512MW reactors) were as big as an apartment. I could only imagine how big they are in that huge commercial reactor. These huge centrifugal pumps take a ton of power to operate, so you could image the electrical explosion of you crossed the 3-phase lines under load.

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Overclock.net › Forums › Industry News › Technology and Science News › [Various] Japan Nuclear Emergency - Continuous Coverage of Damage and Radiation Risks