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[Various] Japan Nuclear Emergency - Continuous Coverage of Damage and Radiation Risks - Page 93  

post #921 of 2836
Quote:
Originally Posted by xd_1771 View Post
So there are radioactive clouds deifnitely heading eastward...
Oh sh--- evacuation time?
EDIT: It appears the doses weren't harmful, nvm
you have your underwear in a suitcase ready to go don't you.
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post #922 of 2836
Thread Starter 
Quote:
Originally Posted by Eagle1337 View Post
thanks lampen I can read the op better try size 2 font though.
Better? Hard for me to tell. I'm using my three computer screens to stream a ton of different feeds and streams and doing all the posting on my TV.

Edit: OP updated - John Keeley from the Nuclear Energy Institute in Washington has told the BBC the hydrogen explosion was similar to the first blast at the plant: "Japanese officials to their credit have come out here quite quickly and suggested that at least at this moment they don't believe there has been any significant radiological release - we will cross our fingers and hope that's the case. It appears that was the case with Unit 1's explosion, we'll hope that's certainly the case with Unit 3.
Edited by Lampen - 3/13/11 at 9:55pm
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post #923 of 2836
Quote:
Originally Posted by Lampen View Post
Better? Hard for me to tell. I'm using my three computer screens to stream a ton of different feeds and streams and doing all the posting on my TV.
Now it's nice, not a wall o text but not large enough to be annoying.
post #924 of 2836
Quote:
Originally Posted by scyy View Post
They are venting radioactive steam, the radioactive material will dissipate soon enough. This isn't the same type of radioactive cloud as say Chernobyl.
Oh, I know that. That was still a rather potent cloud however. Now, I don't know the half-lives of the elements, but if they got a month's worth in an hour at 60+ miles out, imagine what that cloud was to the people trying to bring the plant under control.


Quote:
Originally Posted by Lampen View Post
Better? Hard for me to tell. I'm using my three computer screens to stream a ton of different feeds and streams and doing all the posting on my TV.

Edit: OP updated - John Keeley from the Nuclear Energy Institute in Washington has told the BBC the hydrogen explosion was similar to the first blast at the plant: "Japanese officials to their credit have come out here quite quickly and suggested that at least at this moment they don't believe there has been any significant radiological release - we will cross our fingers and hope that's the case. It appears that was the case with Unit 1's explosion, we'll hope that's certainly the case with Unit 3.
Your eyes are about to either mutiny or go on strike.... But still, I'm envious of that setup. Keep up the flow of information.
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post #925 of 2836
post #926 of 2836
I don't understand.

First, that a meltdown is possible.

Then some users here say that it is NOT possible.

And they will NEVER explode.

But...if the cooling system is down and it is obviously overheating, then there IS possibility of it exploding due to the heat?

And mass radiation in the air is possible either way right?

I think there should be an FAQ on the OP as well, but the OP has done enough work on the updating.

+REP for him by the way.
post #927 of 2836
Actually, it's been reported that there's a chance that mass radiation already is in the air
post #928 of 2836
Thread Starter 
Fukushima Nuclear Facility Update:

Fukushima I Nuclear Facility- Emergency Cooling Operations being conducted at Fukushima Plant #1, Reactors #1, #2, and#3. Seawater and Boric Acid are being injected into all three reactors in order to slow cool them as quickly as possible. Earlier in the crisis a hydrogen explosion caused by emergency venting of the reactor damaged an external containment building however the reactor pressure vessel is believed to be intact. Officials are still unsure whether a meltdown has occurred, but are actively working to assess the situation as it develops. During the morning of March 14 a second explosion caused by emergency venting of a reactor destroyed the external containment building of Reactor #3 in the Fukushima I Nuclear Facility(Plant #1). All government announcements have indicated that the situation is under control but there is particular concern over this reactor because it is a MOX reactor, meaning it utilizes Uranium-235 and Plutonium-239 as fuel. The pressure in the reactor was last reported as normal. Teams are currently trying to assess how much, if any, radiation or radioactive material was released during the venting and subsequent explosion.

Fukushima II Nuclear Facility - Plant operators were able to restore Reactor One's residual heat remover system, which is now being used to cool the reactor. Work is in progress to achieve a cold shutdown of the reactor. Technicians are currently attempting to restore residual heat removal systems for Reactor Two and Four. Reactor Three is currently in safe, shutdown.

It seems that Fukushima II is almost out of the woods at this point. Fukushima has quite a way to go.
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post #929 of 2836
Thread Starter 
Quote:
Originally Posted by 8-Ball View Post
I don't understand.

First, that a meltdown is possible.

Then some users here say that it is NOT possible.

And they will NEVER explode.

But...if the cooling system is down and it is obviously overheating, then there IS possibility of it exploding due to the heat?

And mass radiation in the air is possible either way right?

I think there should be an FAQ on the OP as well, but the OP has done enough work on the updating.

+REP for him by the way.
Meltdowns are possible but improbable. If a meltdown does occur it will likely be a partial meltdown, only affecting a small amount of the nuclear fuel. If this happens it's highly unlikely that the reactor vessel would be breached and everything would be contained within the vessel.

They can explode from excessive pressure. If the heat is great enough and the cooling is inadequate the reactor vessel could rupture. The Japanese however are doing everything they can to ensure adequate cooling(sea water and boric acid injection) and pressure stability(emergency venting).

Mass radiation would require either a massive rupture of the reactor vessel or numerous (were talking weeks to months) of emergency ventilations.

Edit: And time for me to get some sleep. I sleep with the radio on though so if something major happens and I hear it I'll be back.
Edited by Lampen - 3/13/11 at 10:29pm
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post #930 of 2836
good news on Fukushima II, but that explosion at reactor 3 sure was unsettling, even if it was a hydrogen one just like reactor 1. Hopefully that plant can completely finish the shutdown and coolant procedures. The mixed reports on radiation being released and spread to the USS Reagan don't seem good.
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