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This process decreased the temperature of the fuel rods to a non-damaging level. Because the reactor had been shut down a long time ago, the decay heat had decreased to a significantly lower level, so the pressure in the plant stabilized, and venting was no longer required.
***UPDATE – 3/14 8:15 pm EST***
Units 1 and 3 are currently in a stable condition according to TEPCO press releases, but the extent of the fuel damage is unknown. That said, radiation levels at the Fukushima plant have fallen to 231 micro sieverts (23.1 millirem) as of 2:30 pm March 14th (local time).
Originally posted by Konah
Live Feed: Post PM/Cabinet Address
The Japanese government said that the appropriate units are actually MILIseiverts, not micro-, so that article from MIT is being based off of radiation levels that are incredibly lower. The actually radiation levels are 1000x stronger, and there is also now neutron radiation.edit on 3/14/2011 by Konah because: (no reason given)
Originally posted by Konah
Reread what I just told you and possibly listen in to the live feed.
The radiation levels were incorrectly labeled in microsieverts - the Prime Minister of Japan said the proper unit is millisieverts. So the number in the article is incorrect, which would mean their conversion is also vastly incorrect.edit on 3/14/2011 by Konah because: (no reason given)
Originally posted by Konah
Reread what I just told you and possibly listen in to the live feed.
The radiation levels were incorrectly labeled in microsieverts - the Prime Minister of Japan said the proper unit is millisieverts. So the number in the article is incorrect, which would mean their conversion is also vastly incorrect.edit on 3/14/2011 by Konah because: (no reason given)
The details about what happened at the Unit 2 reactor are still being determined. The post on what is happening at the Unit 2 reactor contains more up-to-date information. Radiation levels have increased, but to what level remains unknown.
Confirmation of loud sounds this morning came from the Nuclear and Industrial Safety Agency (NISA). It noted that “the suppression chamber may be damaged.” It is not clear that the sounds were explosions.
Also known as the torus, this large doughnut-shaped structure sits in the centre of the reactor building at a lower level than the reactor. It contains a very large body of water to which steam can be directed in emergency situations. The steam then condenses and reduces pressure in the reactor system.
The pressure in the pool was seen to decrease from three atmospheres to one atmosphere after the noise, suggesting possible damage. Radiation levels on the edge of the plant compound briefly spiked at 8217 microsieverts per hour but later fell to about a third that.
Originally posted by ProtoplasmicTraveler
The truth is that the situation in Japan is fluid, and while the guys at MIT seeking publicity for the Institute are sitting in their staid respectable classroom environs, the nuclear reactor 10,000 plus miles away, plant has been battered by explosions, an earthquake and a tsunami.
These are nerds with pocket protectors talking out of the side of their arse in all their pompous don't have a clue detached glory.
The situation still continues to go from bad to worse, and I would be looking to people on the ground in Japan for information not the Dungeon and Dragons crowd.