Sorry I’ve been offline. Bad cold and need rest. Will post a few things here and be back in a few days.
I hope you have been following EX-SKF. He has the best up-to-date IMPORTANT info on the nuclear situation. Too many to post here, so please check that website.
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First it was reported that “over 10,000 ppm” or over 1% of hydrogen gas was detected at 2 locations in the pipe that connects to the Containment Vessel of Reactor 1 at Fukushima I Nuclear Power Plant. Then it was allegedly “over 40,000 ppm” or 4%.
According to Jiji Tsushin, TEPCO thinks the hydrogen gas concentration in the pipe may be 100%. 1,000,000 ppm.
Still, TEPCO says possibility of explosion is not necessarily high because there is no source nearby that could cause sparks. (Never mind that they were going to use blow torches to cut the pipes…)
Jiji Tsushin (12:28PM JST 6/24/2011):
Concerning the detection of hydrogen gas in more than 1% concentration inside the pipe that connects to the Containment Vessel of Reactor 1 at Fukushia I Nuclear Power Plant, TEPCO announced on September 24 that it is highly probable that almost all the gas inside the pipe is hydrogen gas. TEPCO’s Matsumoto said in the press conference, “Since there is no source for sparks, it cannot be said that there is a high risk of explosion immediately”.
According to TEPCO, they measured the gas at the pipe exit several times in the afternoon of September 23. Each time, the result showed “flammable gas including hydrogen gas, over 100% “. The company plans to use the instrument that only measures hydrogen, in order to accurately measure the concentration of hydrogen.
It’s so TEPCO. First they used the device that could only measure up to 10,000 ppm, and that maxed out. Then they apparently used the device that could only measure up to 40,000 ppm, and that maxed out. So they brought in a bit more powerful instrument, but it measures all flammable gases including hydrogen.
I suppose they were hoping that one of these devices would suffice. But now, even they have admitted that the air inside the pipe may be 100% hydrogen.
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Hartmann: A Fukushima survivor reveals all
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See for yourself. An expat from California measured the radiation level inside the train to Narita, and found it was extremely high right where he was sitting.
No, it was not his suitcase. It seems it was that particular seat where he was sitting.
Yes, his personal survey meter could be broken, as he repeatedly wonders in the video, and people just ignore the gaijin telling them the radiation level inside the train is the Fukushima level, while a woman sitting next to him praises his Japanese as native level. Surreal.
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In case you’re wondering what happened to the precise measurement of the hydrogen gas inside the pipe that leads to the Reactor 1 Containment Vessel, the worker who tweets from Fukushima I Nuke Plantsays (in Japanese) it will be a few more days till TEPCO can even get the instrument for measurement.
“I’m so glad that we didn’t cut the pipe. It may sound incredible but there was no measurement [of flammable gas] scheduled in the initial work plan. But they decided to measure one day before they were going to cut the pipe. Close call. There is no instrument that can measure hydrogen alone, at Fuku I. It will come on September 28, so the measurement may be done on either September 28 or 29. The result seems obvious, but…”
You have to give TEPCO some praise for their dare. They were going to cut the pipe without measuring what could be inside the pipe. But don’t breathe a sigh of relief just yet, because the worker also says TEPCO currently plans to cut the pipe anyway while purging the hydrogen gas inside the pipe with nitrogen gas. There seems to be no plan to deal with anything else than this particular pipe, although the regulatory agency NISA has asked TEPCO to conduct similar tests in Reactors 2 and 3.
TEPCO sort of knows how to operate a nuclear power plant. They have zero expertise in how to fix an utterly broken nuclear power plant, but they continue to be allowed to attempt, to the horror and dismay of the northern hemisphere.
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Q: And just where does all that contaminated water go? (Not to mention brushes, rags, topsoil, buckets, and other stuff that can’t be un-contaminated)?
Fukushima City to decontaminate all houses
Fukushima City, about 60 kilometers from the crippled Dai-ichi nuclear power plant, plans to remove radioactive materials from all private houses in the city.
The plan was decided after high levels of radiation were detected in some areas of the city. The amounts were close to a level that would prompt authorities to recommend evacuation of nearby residents.
Some people concerned about possible health risks to their children have already moved out of the city.
The plan aimed at substantially lowering radiation levels in the air for the next 2 years includes decontamination of all 110,000 households in the city.
Of those, highly contaminated houses where children of high school age or younger live will be given extra thorough cleaning.
Under the plan, professional cleaners commissioned by the city will scrub radioactive substances from roofs and ditches of the houses, and remove concrete, which radioactive material tends to adhere to. They will also decontaminate roofs and ditches of other nearby houses, but residents will be required to remove surface soil and weed gardens by themselves.
The city says it will recruit volunteers from around the nation, if necessary, and send them to households that need manpower. The city also plans to decontaminate parks and community halls.
But it has yet to be determined how the contaminated soil and other materials will be disposed of.
Tuesday, September 27, 2011 10:39 +0900 (JST)
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And this, from Fukushima Diary. Read this entire article at:
Breaking News: High level of radiation is making hydrogen from H2O
These are the tonight’s tweets of actual Fukushima worker called Happy20790.
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I managed to come back safely today. We couldn’t work at reactor 1 today, again. Last week,they said they detected 4% of hydrogen but it turned out to be over 100%. The current measurement tool is to detected only flammable gas, but Tepco says probably it is all hydrogen.
We would have been all dead if we cut of the pipe. Unbelievable story, but as our original schedule, we didn’t plan to check the presence of flammable gas. The process was added the day before the day. It’s so scary.
The measurement tool to detect only hydrogen is not in Fukushima plant right now.
It’s coming on 9/28. We are to measure it on 28th or 29th but the result is already obvious. Most of the gas is hydrogen.
then we are going to inject nitrogen to cut out to pipes. but normal air contains 18% of oxygen, which is enough to cause a hydrogen explosion even without fire. It’s so scary. Injecting nitrogen may also cause lack of oxygen..
They say there are two possibilities why there’s so much hydrogen remain there still.
- (1) Some of it remained even after the hydrogen explosion.
- (2) New hydrogen came out ..
From looking at variety of information, it seems like it’s not from the (thermal) Zircaloy reaction.
It’s probably that high radiation is producing hydrogen out of H2O.
It’s impossible to know how much hydrogen is stocked and where. It could be everywhere. and the amount of the pipes are crazy..If we can identify the pipe that has hydrogen inside,we could isolate the part butthe valves are broken and it’s not enough to stop gas.
Tepco is planning to do with only the “troubled” pipes, but from the view of us, actual workers, we want them to check the whole plant first..
In the last explosion of the reactor 1, they told us there would never be an explosion. We were working at reactor 2, and fire fighters and self defense force were working at the yard, when it exploded.
–> then self defense force quit trusting Tepco anymore and they withdrew.
In this situation, they are going to lift the mandatory evacuating area on 9/28. They should wait at least until we finish making the cover for reactor 1.
Recently mass media don’t broadcast any details so they might not be afraid anymore. Even the water purifying system is broken and being stopped.
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From his valuable statements, we can tell the hydrogen is still being produced by the very high radiation hitting H2O in the reactor.
Nobody has seen it by their own eyes,but the melted fuel rods must be very active still.
Hydrogen keeps being supplied.