Fukushima reactor cooling system suspended: Kyodo
Source: MarketWatch
The cooling system for the spent fuel pool at the crippled Fukushima Daiichi power plant's No. 4 reactor automatically suspended operation Saturday, Tokyo Electric Power Co. said, Kyodo News reported Saturday.
The utility known as Tepco has been unable to activate a backup cooling system for the pool and is looking into the cause of the trouble, officials of the plant operator said later in the day, adding it is unlikely the temperature will rise rapidly.
<snip>
If Tepco continues to be unable to cool the pool, the temperature could reach 65 C, which is the upper limit designated in the safety regulations, on Tuesday morning. The cooling system at the No. 4 reactor was previously suspended on June 4.
Read more: http://www.marketwatch.com/story/fukushima-reactor-cooling-system-suspended-kyodo-2012-06-30
XemaSab
(60,212 posts)bananas
(27,509 posts)In case I messed up editing the OP, here's the link: http://www.marketwatch.com/story/fukushima-reactor-cooling-system-suspended-kyodo-2012-06-30
I know we're frienemies on here, but I really appreciate the updates.
bananas
(27,509 posts)fuck
waddirum
(980 posts)"The water temperature of the pool was 31 C at the time of the suspension at around 6.25 a.m. local time and no leakage of water with radioactive materials has been found, Tepco said.
The temperature of the pool rose 0.26 C per hour by late Saturday afternoon, according to the utility."
You all can do the math, but that is 136 hours to reach 65 degrees C. Have a great weekend!
solarman350
(136 posts)Last edited Mon Jul 2, 2012, 12:39 AM - Edit history (3)
Is TEPCO spinning two different stories about the leakage of radioactive material-laden cooling water? Here's what I read and the site where I read it from:
"The water temperature of the pool was 31 C at the time of the suspension, and leakage of water with radioactive materials has not been confirmed, TEPCO said..."
Reference Link:
http://mainichi.jp/english/english/newsselect/news/20120630p2g00m0dm049000c.html
Building Housing Reactor #4
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Journeyman
(15,047 posts)freshwest
(53,661 posts)sulphurdunn
(6,891 posts)Because it can melt down. Because you can't turn it off. Because you can't safely eliminate the waste. Because it can kill and kill and keep on killing.
snappyturtle
(14,656 posts)They_Live
(3,250 posts)Solving this problem should be the top priority for every nation on earth, whether Japan is asking for help or not. It will impact all of us.
Solving this one and avoiding another one.
wordpix
(18,652 posts)dependence on electric grids, sites of plants on coasts and earthquake faults, cost of building new, extending for 20 more years the lives of plants designed for 40 yrs., or human error.
Try to spin the "problem" whatever way you want, this industry needs to be SHUT DOWN.
RobertEarl
(13,685 posts)Water circulating through the pool must be pumped up over 100 feet. When taken out of the pool it must go through a chiller that removes heat.
The circulating water is in a closed system. If it wasn't the radiated water would have no where to go but into the ocean. Since it is radiated water corrosion and other problems arise.
Probably a million gallons a day go through the system. An array of pipes, pumps and coolers are all involved and must all retain integrity under pressure.
And remember, there have been several earthquakes there recently. And the building itself is been taken down piece by piece. Lots of problems involved in the whole mess.
You tube links of the deconstruction:
http://www.youtube.comusernuckelchenblogde?feature=watch
librechik
(30,678 posts)and for months they have been pouring water over it and it leaks out the bottom into the ocean.
Tepco is understandably reluctant to admit this, so hard to find a definitice "yes it's leaking" but that seems to be the suggested conclusion.
http://www.nytimes.com/2012/03/30/world/asia/inquiry-suggests-worse-damage-at-japan-nuclear-plant.html
RobertEarl
(13,685 posts)No telling how much is still running off into the Pacific.
Science has determined that sea sediments close to Fukushima are many times above 'allowed' levels.
What is really scary is the fact that the highly radiated water that was formerly in the 3 melted cores and spent fuel pools, all ended up in the ocean. No telling how many tons/gallons/acre feet of deadly water is now circulating around the world.
However, like they say: Dilution is the solution to pollution!
muriel_volestrangler
(101,422 posts)...
The temperature in the damaged pool touched 43 degrees before the fault was fixed.
TEPCO says it should now gradually fall back to normal.
Meanwhile, Japan is due to restart its first nuclear reactor since the crisis hit Fukushima last year.
...
http://www.abc.net.au/news/2012-07-01/fukushima-operators-repair-cooling-to-spent-fuel/4103506
wordpix
(18,652 posts)holding pools until the rods could be removed to permanent nuke graveyards.
Yeah, "normal." How about solving the nuke waste issue, nuclear industry and the governments that subsidize it, before stating everything's back to "normal?"