Day 201 Uh, Henry, don’t you think you should check for gas BEFORE you cut that pipe?

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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TEPCO: It May Be 100% Hydrogen Gas Inside the Pipe Connecting to Reactor I Containment Vessel

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):

福島第1原発1号機の格納容器につながる配管から1%を超える濃度の水素が検出された問題で、東京電力は24日、配管内部の気体はほとんどが水素である可能性が高いと発表した。東電の松本純一原子力・立地本部長代理は同日の記者会見で、「着火源がないので、直ちに爆発のリスクが高いとは言えない」と述べた。

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”.

東電によると、23日午後に配管の出口部分の気体を複数回測定したところ、いずれも「水素を含む可燃性ガスが100%以上」との数字が出た。今後、水素だけを計れる測定器を用意し、正確な濃度を測定する方針。

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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MUST VIEW:

Hartmann: A Fukushima survivor reveals all

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From EX-SKF:

Radioactive Train in Tokyo Metropolitan Area? Over 10 Microsievert/Hour Inside the Train

 http://ex-skf.blogspot.com/2011/09/radioactive-train-in-tokyo-metropolitan.html

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.

This line, Sobu-Yokosuka Line, belongs to JR East, which covers the entire Tohoku, Kanto and about half of Chubu.

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Fuku I Hydrogen Gas Update: TEPCO Was Going to Cut the Pipe Without Testing

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

http://www3.nhk.or.jp/daily/english/27_08.html

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:

http://fukushima-diary.com/2011/09/breaking-news-high-level-of-radiation-is-making-hydrogen-from-h2o/

Breaking News: High level of radiation is making hydrogen from H2O

Posted by Mochizuki on September 26th, 2011

These are the tonight’s tweets of actual Fukushima worker called Happy20790.

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今日も無事帰って来ましたっ。1号機の原子炉建屋は今日も作業中止でし。先週、可燃性ガス測定器で4%Maxって言ったけどまさかの100%越え(*_*)今ある測定器は可燃性ガスを計るものだから水素単体はわからないけど東電はほとんどが水素だろうだって言ってる。

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.

配管切んなくて良かった~。あり得ない事だけど、最初の工程には測定なんて項目なくて前日に決まったから、ヤバかったよ。水素単体の測定器は今1Fにはなくて、28日に準備出来る予定なんだ。28か29日に測定出来ると思う。結果は明らかだけどね。

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.

その後は窒素置換して窒素パージしながら切断する計画を検討してる。空気中の酸素濃度は18%位だから空気に触れても爆発だから凄く怖いんだけど…。窒素も大量に使うから酸欠事故も心配だし…。

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..

水素が配管内に溜まってるのは事故当初のものが抜けてないやつや、新たな水素が溜まって…と両方の理由があるみたい。新たな水素は色々な情報によると、どうも燃料被覆管のジルカロイの反応ではなくて水蒸気が高線量を浴びると水素が発生するみたい。

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.

どこにどれだけ溜まってるかわかんないから大変だよ。原子炉建屋だけじゃなくてタービン建屋の配管だって危ないし…。凄い配管の量だよ。対象配管だけアイソレ(仕切る)出来ればいいんだけど、仕切れる(アイソレ)バルブも壊れてるし、健全でも気体を止めるには難しいし…。

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.

東電は対象配管だけなんとか対応して工事進めるみたいだけど、作業側としては先に全体をなんとかしないとって考えるけど多分無理なんだろうな。

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..

東電は1号機爆発の時も絶対爆発は無いって言ってオイラ達は2号機の中の作業、自衛隊や消防はヤード作業してた時にドドドッカーンてきたからなぁ。自衛隊は東電信じないって撤退しちゃうし…。あれがなきゃもっと自衛隊手伝ったかもなのに。

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.

そんな今の現状で28日に避難準備区域が解除される。もう少し待てないのかなぁ…。せめてカバーリングが出来るまで。最近ニュースも詳しく伝えないから危険性がわからないのかなぁ。汚染水処理だってサリーが止まったりまだまだ安心出来ないし…。

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.

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