Serious deterioration found in absorption tower of multiple nuclide removing system ALPS
Posted by Mochizuki on August 8th, 2013 · No Comments
Following up this article..Multiple nuclide removing system ALPS had leakage due to “corrosion” / Only 2 months after test operation started [URL]
While ALPS is suspended, Tepco inspected the inside of the absorption tower (6A). In the inspection, Tepco found the access door and the part around the welding line severely deteriorated. The color is changed to be rusty red.
The reason is not verified yet.
↓ In the green box
WEDNESDAY, AUGUST 7, 2013
#Fukushima I Nuke Plant: ALPS Multi-Nuclide Absorption Vessel Itself Had Rust and Corrosion
TEPCO kindly updated us with the bad weld and rust on the batch processing tanks in ALPS multi-nuclide removal system (see my posts from June this year here, here,here and here) on August 7, 2013. But I thought the title of the page was funny (emphasis is by me):
「多核種除去設備バッチ処理タンクからの漏えいを踏まえたＢ系統の停止計画と追加調査結果」
"Plan to halt Line B because of the leak from the batch processing tanks in Multi-Nuclide Removal System and the result of additional investigation"
Additional investigation?
It turns out that this additional investigation has found corrosion and rust in one of the multi-nuclide absorption tower vessels. The absorption material inside the vessel was due for exchange, so TEPCO decided to take a look inside the vessel. This is what they found:
From TEPCO's Photos and Videos Library 8/7/2013:
It turns out that this additional investigation has found corrosion and rust in one of the multi-nuclide absorption tower vessels. The absorption material inside the vessel was due for exchange, so TEPCO decided to take a look inside the vessel. This is what they found:
From TEPCO's Photos and Videos Library 8/7/2013:
Flange of the inspection hole:
Rust around the weld, inside the vessel:
Here's the system diagram of ALPS. There are three lines, A, B and C.
In my June 20, 2013 post, I wondered:
how about the same tanks in other two lines? What about other tanks and vessels that are all welded?
The tanks and towers for ALPS were made by Toshiba (most likely Toshiba's subcontractor), and the weld was inspected by Toshiba before they were deployed at Fukushima I Nuclear Power Plant, according to independent journalist Ryuichi Kino when I asked him back in June when the batch processing tanks were found with bad weld and leak.
What has happened to the technological and manufacturing might of Japan? (Or was it a myth after all?)
What has happened to the technological and manufacturing might of Japan? (Or was it a myth after all?)
Asahi: Huge island made of “contaminated soil and rubble” proposed off Fukushima coast — Place for disposal of radioactive debris — “Measures will be taken to prevent adverse impact on ocean”
http://www.zerohedge.com/news/2013-08-07/abe-sanctions-government-funding-freeze-fukushima-giant-ice-wall
Abe- normal thinking from PM Abe ......
Abe Sanctions Government Funding To "Freeze" Fukushima With Giant Ice Wall
Ripped from the pages of Marvel Comics, Japanese Anime, or Game of Thrones; the latest cunning solution to what the Japanese admit is an ongoing emergency in Fukushima is, well, creative... Now that TEPCO has been shown to be inept, Abe and his government have sanctioned the funding of a 1.4km wall of ice to surround the building that holds Reactors 1 to 4. No this is not Pacific Rim; as Kyodo reports, chemical refrigerants will keep the underground wall frozen to stop the 400 tons of ground water being pumped into the reactors to cool them from leaking further into the sea water surrounding the catastrophe. This must be a positive for GDP, if 'broken windows' can help the Keynesians (and digging and refilling holes) then why not build a giant ice wall that will require unending energy to refrigerate what is a constantly melting-down core of nuclear awfulness. We wish them luck.
...leaked an estimated 300 tons of water per day from the damaged nuclear plant into the ocean, said a representative of the Ministry of Industry on Wednesday...The countermeasures of the operating company Tepco are obviously insufficient . The energy company has "dry walls" claims to be injected into the soil, which should be there to harden a lock. However, as the company announced on Tuesday , the water flows around the wall into the sea....To further penetration of water into the damaged nuclear plant to prevent, is now anunderground wall to be built from the ground is frozen to the reactor building, the Japanese news agency Kyodo reported on. To this end pipes with chemical refrigerants to promote the building of reactors 1 to 4 are laid in the ground. The thus created barrier was expected to have a length of 1.4 kilometers....Thanks to the already heavily burdened financially operator TEPCO Group the necessary funding will not be able to apply for the state to step in as a government spokesman said on Wednesday. The construction of a protective wall of such proportions was unprecedented in the world. In order to build such a thing, the state must helpthe spokesman was quoted as saying.
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