(UPDATE: TEPCO started the backup system at 12:30PM, and nitrogen injection has started. Still no word about why the system stopped in the first place. Since TEPCO is incurious, don't hold your breath for the answer.)
(2nd UPDATE 4/4/2012: TEPCO monitors the system every 6 hours. A worker just happened to look at the monitor screen and noticed the amount of nitrogen injected showed zero. No one seems to know how long the system had stopped, and no one seem eager to find out.)
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From Jiji Tsushin (4/4/2012, 12:24PM):
１～３号機の窒素封入装置停止＝水素濃度抑制へ、復旧急ぐ－福島第１原発
Nitrogen injection system for Reactors 1, 2, 3 at Fukushima I Nuke Plant stopped, TEPCO trying to restore the system to keep the hydrogen concentration low.
東京電力福島第１原発事故で、東電は４日、１～３号機の格納容器に窒素を封入する装置が停止したと発表した。窒素は水素爆発の原因となる格納容器内の水素濃度を抑えるために封入されているが、東電は水素が危険な濃度になるまでは３０時間かかるとしており、復旧を急いでいる。
TEPCO announced on April 4 that the system that injects nitrogen gas into the Containment Vessels of Reactors 1, 2 and 3 had stopped. Nitrogen is being injected into the Containment Vessels to suppress the rise of hydrogen gas concentration , which could cause hydrogen explosions. According to TEPCO, it takes 30 hours before the hydrogen concentration reaches a dangerous level. The company is currently trying to restore the system.
東電によると、同日午前１１時前、窒素封入装置が止まっているのを作業員が見つけた。同社は装置の復旧作業を進めるとともに、原因を調べている。
According to TEPCO, before 11AM on April 4, a worker found the nitrogen injection system had stopped. The company is restoring the system, and trying to identify the cause.
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18 comments:
Looks like everything's under control, I doubt the whole reactor site will be over a sievert unless something bad happens, but what can go wrong?
Let's see, what can go wrong? Talk of Reactor 4 listing or falling is back in vogue, it seems, both in the US and in Japan. Soon people will start saying "neutron beam!"
That aside, I think contaminated water storage will be the biggest problem. They are fast running out of tanks and place to put the tanks.
Japan was good at "muddling through". Maybe still is. Look at their economic mess over the past 20 years, without citizens noticing anything bad. When some of them finally realized something was wrong, debt to GDP ratio was over 230%.
ya but... that's 'sposed to be a secret....
can you imagine if word got out, it would knock down the whole global financial systems, domino effect etc, so let's keep that little secret between you and me shall we. "wink wink"
"wink wink"-- and the secret debt to GDP ratio of the USA is different? Japan certainly has a "smoking gun" --the international community is trying to hide the economic coverups.
Well, there is "one word" about why the system stopped in the first place. "due to failure alert of compressor" http://www.tepco.co.jp/en/nu/fukushima-np/images/handouts_120404_02-e.pdf
So something has got wrong in the compressor.
"They are fast running out of tanks and place to put the tanks." They are building a new water treatment facility to remove strontium and other nuclides. They hope that after such treatment, the water will be clean enough so that they can release it into to the sea. "By 2012, new decontaminated water processing facilities against multi-radioactive nuclides,
which can not be removed by existing Cesium treatment facilities, will be installed." http://www.tepco.co.jp/en/press/corp-com/release/betu11_e/images/111221e10.pdf
Fast running out are the audience to the murderous Japanese Government.
Fast running out are the Cesium, Plutonium....radiations and particles.
Fast running out are the rooms for Governments to lie.
Out of rooms for the zombies they creating.
Maybe OT but Japan has an utmost population problem. Generations are declining constantly. There will not be enough young people to overcome the mistakes of the generation that made them. I have been here long enough to make me 40% Japanese. They do not think about the future generations to come. The big question is when do they admit this is no longer an "in house" problem. I just feel sad for the kids.
Well according to their status update it was because of 'failure alert' of a compressor. Why the compressor stopped is the question.
"Approx 10:55 am A TEPCO employee found the measurement flow volume of the nitrogen injection line to PCV of Unit 1-3 and RPV was 0 m3/h. After that we checked the equipment and found the Nitrogen supply system (Nitrogen/Gas separator B) was stopped due to failure alert of compressor."
from http://www.tepco.co.jp/en/nu/fukushima-np/images/handouts_120404_02-e.pdf
Why do they have to worry about the accumulation of hydrogen concentration when the Zircaloy cladding of the fuel rods has already been compromised?
Are they trying to cover up the fact that nuclear fission, and prompt criticality is occurring, whereby neutron emission is causing the hydrogen?
The whole world is doomed.
AND we can all eat the discount cat-food,er,tuna fish. Such luxuries are now things of the past. Don't take it from me, go ask a honey bee. This has been nothing but a deceit, and find out the truth, game. Soon the salmon go as quick as bear from marauding feral hogs;rooting rill the land was useless, uprooting trees making mud slide conditions - barren soil.
I think the problem isn't the compressor failure itself, but the missing backup system that automatically initiates when the main system fails.
And, what happens at a new tsunami when the compressors and all this plastic tubing spaghetti get washed away?
Do they actually have any plans what to do if a new tsunami happens?
Will Tepco then be able to install a new nitrogen injection system in less than 30 hours?
My immediate question would be: We know when they found that the system had stopped. Do we know when it actually DID stop (was last checked and found working) and, therefore, how much time is left to get it going again before hydrogen may become a serious danger?
*mscharisma*
Ooops, overlooked that the backup system kicked in. Still would like to know how long the main system was not working and, as Atomfritz touched on, why the backup system didn't kick in automatically.
*mscharisma*
This story says it was stopped for over 2 hours. And it took them an hour to realise after the alarm went off because the alarm is not directly monitored by the operation center!
http://english.kyodonews.jp/news/2012/04/150722.html?utm_source=dlvr.it&utm_medium=twitter
Lets see, by happen stance a worker glanced at a monitor and saw the problem. No alarms, no constant surveillance of the monitor, no worry in the World!
Having TEPCO run this circus is like watching a KeyStone Cops movie...only, this is not funny.
Anon @2:25PM Well,said and exactly what I was thinking too. Those gauges should be monitored and documented on data sheets. Some thing has happened that they are not reporting.
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