EX SKF
http://ex-skf.blogspot.com/2013/11/fukushima-i-nuke-plant-reactor-4-sfp.html
( Hmm , Tepco wants everyone to believe a damaged fuel assembly - bent 90 degrees , occurred 25 years ago ? Are they lying even before they start this most dangerous and unprecedented project the world has seen regarding a nuclear disaster ? If yes , how can you trust what they might say about the work moving forward ? )
It must be from the explosion! Or from something TEPCO has done since the accident, whatever it is!
No.
If TEPCO is to be believed, TEPCO has been hiding the damages for at least 10 years; the oldest damage was from 25 years ago.
According to Yomiuri Shinbun (11/12/2013), that's not clear, and you would be excused if you thought the damages were recent (after March 11, 2011).
From Yomiuri Shinbun (11/12/2013):
Fukushima Diary.....
http://ex-skf.blogspot.com/2013/11/fukushima-i-nuke-plant-reactor-4-sfp.html
( Hmm , Tepco wants everyone to believe a damaged fuel assembly - bent 90 degrees , occurred 25 years ago ? Are they lying even before they start this most dangerous and unprecedented project the world has seen regarding a nuclear disaster ? If yes , how can you trust what they might say about the work moving forward ? )
TUESDAY, NOVEMBER 12, 2013
#Fukushima I Nuke Plant Reactor 4 SFP: Three Fuel Assemblies Deformed or Damaged, Says TEPCO
It must be from the explosion! Or from something TEPCO has done since the accident, whatever it is!
No.
If TEPCO is to be believed, TEPCO has been hiding the damages for at least 10 years; the oldest damage was from 25 years ago.
According to Yomiuri Shinbun (11/12/2013), that's not clear, and you would be excused if you thought the damages were recent (after March 11, 2011).
From Yomiuri Shinbun (11/12/2013):
東京電力は１２日、今月中に取り出し作業が始まる福島第一原子力発電所４号機の使用済み核燃料プールの１５３３本の燃料に、変形などのために取り出しが困難なものが３本あることを明らかにした。
On November 12, TEPCO disclosed that there were three fuel assemblies out of 1533 fuel assemblies in the Spent Fuel Pool of Reactor 4 at Fukushima I Nuclear Power Plant that were deformed and would be difficult to remove. The removal of fuel assemblies from the Reactor 4 SFP will start this month.
問題の３本には、過去の作業で生じたわずかな変形や損傷がある。放射性物質の漏れは確認されていない。東電は、ほかの燃料の移送を優先させ、３本の取り出しと移送の方法は今後検討する。原子力規制委員会は、取り出し作業の安全性を認めており、作業は月内に予定通り開始される。
The three fuel assemblies has slight deformation or damage caused by the past work [in the SFP]. No leak of radioactive materials has been observed. TEPCO will transport other fuel assemblies first, while they figure out how to remove and transport these three fuel assemblies. Nuclear Regulation Authority has already approved the fuel removal, and the work will start within this month as scheduled.
So, are these fuel assemblies new? used? How long ago was the "past work"?
I found the answer in Fukushima Minyu, one of the local newspapers in Fukushima Prefecture. It was long before the start of the March 11, 2011 nuclear accident, with the oldest "past work" 25 years ago...
From Fukushima Minyu (11/13/2013; part):
I found the answer in Fukushima Minyu, one of the local newspapers in Fukushima Prefecture. It was long before the start of the March 11, 2011 nuclear accident, with the oldest "past work" 25 years ago...
From Fukushima Minyu (11/13/2013; part):
東電によると、損傷した燃料の1体は「く」の字に折れ曲がっている状態。25年ほど前に燃料を取り扱う際に失敗し曲がった。ほかの2体は10年ほど前に破損が分かり、異物などの混入で外側に小さな穴が開いた状態という。
According to TEPCO, one of the damaged fuel assemblies is bent at a 90-degree angle [literal meaning: bent in the shape of a Japanese character "く"; actual angle could be less]. It was bent 25 years ago when a mistake occurred in handling the fuel. The other two were found to be damaged 10 years ago; there are small holes on the outside from foreign objects.
燃料損傷について当時公表したかどうかは東電が調査中。
TEPCO is investigating whether the damages to the fuel assemblies were made public when they were discovered.
According to Fukushima Minyu, the occasion was a visit by the delegation of the Fukushima Prefectural Council for Decommission Safety Monitoring. The council members include officials from the Fukushima prefectural government, municipalities around Fukushima I Nuclear Power Plant, and experts.
How do you bend a fuel assembly at a 90-degree angle, handling it in the spent fuel pool?
And how could Yomiuri call a fuel assembly bent at a 90-degree angle "slight deformation"? Slight?
--------------
For your information, there are 1533 fuel assemblies (each of which contains 50 to 60 fuel rods in channels inside the casing) in the Spent Fuel Pool of Reactor 4 at Fukushima I Nuclear Power Plant.
There used to be 1535 fuel assemblies there, but two new fuel assemblies were taken out from the Reactor 4 SFP last year for examination.
Of 1533 fuel assemblies currently in the Reactor 4 SFP, 202 of them are never-used, brand-new fuel assemblies. The rest, 1331 are used fuel assemblies. Of 1331, 783 are spent fuel assemblies that have been stored in the SFP at least for several years; 548 are the fuel assemblies that had been used in the Reactor Pressure Vessel until Reactor 4 went into extended maintenance to replace the core shroud. These 548 "hot" fuel assemblies were taken out of the Reactor Pressure Vessel and placed temporarily in the Spent Fuel Pool.
How do you bend a fuel assembly at a 90-degree angle, handling it in the spent fuel pool?
And how could Yomiuri call a fuel assembly bent at a 90-degree angle "slight deformation"? Slight?
--------------
For your information, there are 1533 fuel assemblies (each of which contains 50 to 60 fuel rods in channels inside the casing) in the Spent Fuel Pool of Reactor 4 at Fukushima I Nuclear Power Plant.
There used to be 1535 fuel assemblies there, but two new fuel assemblies were taken out from the Reactor 4 SFP last year for examination.
Of 1533 fuel assemblies currently in the Reactor 4 SFP, 202 of them are never-used, brand-new fuel assemblies. The rest, 1331 are used fuel assemblies. Of 1331, 783 are spent fuel assemblies that have been stored in the SFP at least for several years; 548 are the fuel assemblies that had been used in the Reactor Pressure Vessel until Reactor 4 went into extended maintenance to replace the core shroud. These 548 "hot" fuel assemblies were taken out of the Reactor Pressure Vessel and placed temporarily in the Spent Fuel Pool.
Fukushima Diary.....
[Column] What’s going on underground of Fukushima plant ?
Posted by Mochizuki on November 12th, 2013 · 3 Comments
Note : If you are from the international mass media, Don’t read this site before taking a contact with me.
Something might be occurring underground of Fukushima plant.
It was months ago when the last tank leakage was stopped.
However, radiation density of groundwater is increasing around the tanks.
(cf, All β nuclide density of groundwater still increasing beside the tank area / “Where is the contamination source ?” [URL])
It can’t be explained.
It is not only the radioactive density.
The groundwater level is also rising.
At some borings around the tanks, the groundwater level is already up 40cm to the surface of the ground. It means the ground stabilization is dipped underground.
It’s not the end.
Huge drains run through the plant area. For some reason, the contamination level is higher upstream of the tank areas.
The drains start at a water reservoir, which has been there since before 311.
Tepco doesn’t give any details / explanation about this reservoir. The contamination level of the water is not announced either.
Either way, this reservoir doesn’t seem to be the only source of contamination.
From the question of press at Tepco’s press conference, Tritium density of retained water in the turbine buildings is also increasing. It’s hard to assume it was concentrated given 400 m3 of groundwater keeps flowing into the buildings everyday.
Optimistically, Tepco has not made any investigation for the possible source of the contamination. They also state the groundwater level will naturally decrease.
Whether they don’t want to know the truth or they don’t want to announce the truth, it is doubtful if there are any countermeasures.
Energy News........
Nuclear Professor: Centuries before attempting any work on Fukushima molten fuel? — Concern over “potential phase separations” in corium
More cancers in Fukushima children — Mother: We don’t know what’s actually going on, I can’t trust gov’t — TV: Private hospital finds cysts after ‘official’ tests were all clear (VIDEO)
http://enenews.com/reuters-unit-4-buckled-tilted-could-collapse-fukushima-building-be-listing-concerns-punctured-pool-tepco-fuel-quickly-heat
Reuters, Nov. 12, 2013: The urgency to clear Reactor No. 4 of the fuel assemblies is because of the risk in having spent fuel stored at such a height – some 18 meters above ground level – in a building that has buckled and tilted and could collapse if another quake strikes. Also, if the pool housing the fuel assemblies is punctured and the water drains away, there could be a fire [...] threatening Tokyo […] As the water used to cool the rods has had to be pumped in from the ocean, there is a risk that some may have corroded from the seawater. […] [The fuel rods] contain plutonium, one of the most toxic substances known [...]
Bloomberg, Nov. 8, 2013: Engineers have been examining the stability of the reactor building to make sure no new vulnerabilities have developed that could lead to accidents during removal. Quarterly tests have also been conducted to ensure the building isn’t sinking because of soil subsidence, [Akira Ono, head of the Fukushima Daiichi plant] said.
Independent (UK), Nov. 8, 2013: Engineers must remove the fuel assemblies one by one, without incident, and each time deal with the risk of fire or the cooling water boiling dry. The building lists slightly but Tepco says it has been reinforced [...] Tepco had built an alarm system that would warn workers to evacuate if radiation climbed dangerously high. […]
Takashi Hara, head of the spent fuel removal operation at Unit 4, Nov. 12, 2013: “A lot of debris fell into the fuel pool as a result of the March 2011 hydrogen explosion. The large pieces of debris have been removed […] If, for some reason, the water levels drop, the fuel would quickly heat up.”
Ichiro Kazawa, 61, a former real estate manager from Hirono, nearby the plant, Nov. 12, 2013: “We are all worried … Every day we read news about the plant, and we are aware of their plans to remove the spent fuel rods […] Everybody’s concerned and just hoping there will be no major accidents. No one here trusts Tokyo Electric.”
Simply Info......
Japan’s WHO Radiation Expert Admits Giving Bad Information, “Oops”
Many following the Fukushima disaster are familiar with Dr. Shunichi Yamashita (aka: Dr. 100 mSv). He headed the Fukushima Health Survey for the first years and dispensed advice right after the disaster that has been repeatedly found to be wrong. In the latest problem Asahi Shimbun (translated by Ex-SKF) found that Dr. Yamashita didn’t even understand the basics of the ongoing disaster and did nothing to seek out information so he could give informed opinions about … Read entire article »
59 Total Thyroid Tumors In Fukushima Children
New data has been released from the government study of thyroid abnormalities and cancer in Fukushima children. Of those screened 59 have been found to have tumors. 27 of those have had surgery to remove the tumor. One was found to be benign and 26 were classified as papillary cancers. It was not clear what the status of the remaining … Read entire article »
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