These are the tonight’s tweets of actual Fukushima worker called Happy20790.
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ｼﾞ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ﾋﾞ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 but the 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ﾄﾞﾄﾞ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.
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.
Science journalist Hirose Takashi commented to Shukan Asahi on 9/23,
３月に福島の原子炉でメルトダウンした核燃料の温度は、４０００℃にもなって、危険な放射性物質は、ほとんどすべてが気化する温度をはるかに超えていた。内部被曝で特にストロンチウムとプルトニウムが、ガス化して大量に放出された
In March, fuel rods started meltdown in the reactor.They became hot as 4000℃, which is hot enough to make most of the radioactive material evaporated.
Especially plutonium and strontium were evaporated, spread around as gas.
We were afraid of melt through, but we mustn’t forget it’s still HIGHLY radioactive.
Now Tepco is checking reactor 2 and 3,but both of them will turn to be bull of hydrogen.
Now Tokyo is facing fateful crisis.