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Fukushima inner leaks possibly from opening
The operator of the Fukushima Daiichi nuclear plant says water leaks inside the No. 3 reactor building likely came from an opening in the containment vessel.
Officials of the Tokyo Electric Power Company said high levels of radioactivity in the leaked water suggest the water is most likely from that used for cooling down nuclear fuel that melted after the accident in March 2011.
They spotted the leak on the first floor of the reactor building last Saturday when watching images filmed by a camera on a remote-controlled robot.
The officials suspect the water is leaking from around an opening for a steam pipe in the wall of the containment vessel.
They said the extra space around the opening had been tightly sealed with resin. But they suspect the substance may have deteriorated after being exposed to the heat of the melted fuel and to salt from sea water poured into the vessel immediately after the accident.
TEPCO engineers are planning to locate cracks in the containment vessel and seal them. They will then fill the vessel with water and remove the melted fuel.
The removal is key to dismantling the Fukushima plant.
But they cannot enter the reactor building to study the leak further due to high levels of radiation. They said they are looking into alternative ways to investigate.
Jan. 20, 2014 - Updated 21:20 UTC
TEPCO engineers are planning to locate cracks in the containment vessel and seal them. They will then fill the vessel with water and remove the melted fuel.
China Syndrome. This has usually been meant jokingly (including in the film): to bore through the Earth to China, the molten fissile material would have to go both with gravity and then against gravity, and also somehow manage to withstand the hotter material at the core of the planet. In reality, a melting reactor is estimated to be able to sink at most 15 meters; once radioactive slag reached the water table beneath the plant, the enormous steam release could throw the material into the air, for it to land as fallout across a wide area.
The report, which is to be submitted to the International Atomic Energy Agency (IAEA), said fuel rods in reactors No 1, 2 and 3 had probably not only melted, but also breached their inner containment vessels and accumulated in the outer steel containment vessels. The plant's operator, Tokyo Electric Power (Tepco), says it believes the molten fuel is being cooled by water that has built up in the bottom of the three reactor buildings. The report includes an apology to the international community for the nuclear crisis – the world's worst since Chernobyl in 1986 – and expresses "remorse that this accident has raised concerns around the world about the safety of nuclear power generation".
Human0815
reply to post by Purplechive
Here you can see that it is impossible for the Corium
to cause that Leak!
And the Water is no problem, it get collected and filtered like
the other cooling Water.
More strange is the Leak itself but i still do not understand it
and need to dig deeper.
(Why is the Steamline still needed?)
“We’ve allowed Tokyo Electric to deal with the contaminated water situation on its own and they’ve essentially turned it into a game of ‘Whack-a-Mole,’” Trade Minister Toshimitsu Motegi told reporters today at Fukushima.
More than two years after the March 2011 nuclear disaster, Tokyo Electric’s recovery effort has taken a turn for the worse. Japan’s nuclear regulator last week questioned the company’s ability to deal with the crisis, echoing comments earlier in the month by Prime Minister Shinzo Abe.
Motegi’s visit to the plant comes a week after a storage tank leaked 300 metric tons of highly radioactive water, which Japan’s nuclear regulator labeled a “serious incident” in its worst assessment of the problems at Fukushima since the earthquake and tsunami of 2011 caused reactors to melt down.
In addition to the leaky tank, Tepco has admitted that irradiated water is flowing into the Pacific Ocean, which the government estimates at 300 tons a day.
Tepco’s monitoring of the storage tanks was inadequate and it failed to keep records of its inspections, Kinjo said.
The regulator rated the leak as a 3 on the 7-stage International Nuclear and Radiological Event Scale or INES, denoting a “serious incident.” That’s the highest-level accident since the March 2011 nuclear crisis itself.
December 31st, 2013 | Add a Comment Lack of planning again foils efforts at Fukushima Daiichi. Ex-SKF found the very bad news in a METI report from a closed meeting. The report explains how the ALPS treatment system is unable to properly filter out the radioactive contamination properly in the state it exists in. The portion of the system capable of extracting that contamination does so but makes a huge amount of waste in the process. So now Toshiba, TEPCO and Energy Solutions are at a stalemate. They can run ALPS but it will be highly inefficient at the stated purpose and create a large volume of solid waste canisters that will need to be stored. So now ALPS fate appears to be up in the air. All of this is over a very rudimentary mistake. Water testing before ALPS was prepared for implementation would have told the condition of the contamination states within the water. So did nobody do extensive analysis of the water before designing the system to treat it? This multi-million dollar failure sits squarely with Toshiba and Energy Solutions who should have known better. In this case TEPCO appears to be the unlucky customer stuck with the bill.
Human0815
reply to post by RickinVa
Because 99% of the Radioactivity get filtered by ALPS,
i told you that you have to look for it,
the remain is only Tritium!
I have no problems with a Release of all this stored Waste-Water
because the amount of Radioactivity is very, very small compared to the Initial-Release
from the first Week, that Tepco is keeping it is just a "White-Wash"
(now i used this Word, lol)
@ Dw.
In the Pic above you can see the Pressure Vessel,
this is breached and the Core melted down into the
Primary Containment!
Look one more time for the First Progress Report because
of better Graphics!edit on 23-1-2014 by Human0815 because: (no reason given)
Last week, Tepco vowed to filter all of the tainted water through ALPS by the end of March 2015, after Prime Minister Shinzo Abe asked the utility to set a deadline.
Tepco halted test runs of the high-tech water processor in June after corrosion holes were found in the equipment. ALPS consists of three individual processing systems, labeled A, B and C. Each has the same level of decontamination ability. Tepco conducted a test run on system C on Friday, with system A to be tested late next month and B in November. If all three are cleared for full operation, ALPS will be able to decontaminate 750 tons of toxic water a day, according to Tepco. More than 300,000 tons of tainted water is currently stored at Fukushima No. 1.
Lack of planning again foils efforts at Fukushima Daiichi. Ex-SKF found the very bad news in a METI report from a closed meeting. The report explains how the ALPS treatment system is unable to properly filter out the radioactive contamination properly in the state it exists in. The portion of the system capable of extracting that contamination does so but makes a huge amount of waste in the process. So now Toshiba, TEPCO and Energy Solutions are at a stalemate. They can run ALPS but it will be highly inefficient at the stated purpose and create a large volume of solid waste canisters that will need to be stored. So now ALPS fate appears to be up in the air.
The operator of the crippled Fukushima nuclear plant, TEPCO (Tokyo Electric Power Company) has stopped using its systems to decontaminate radioactive water at the facility, Japanese broadcaster NHK reported. The Advanced Liquid Processing System, or ALPS, has been utilized to liquidate radioactive substances from contaminated water stored at the plant. The crane to get rid of the container from the ALPS ceased working on Tuesday. On Wednesday, TEPCO stopped operating all 3 ALPS systems at the facility. The company officials say the system may take a long time to restart.
Human0815
reply to post by RickinVa
It is not filtering 99% of the Water,
ALPS filter Radiation and ca. 99% of this different Isotopes get
collected in the Filter!
And i told you: "read the Files" this is the only Way to understand the Process
of Waste-, Ground- or Cooling Water.
Also i said it already they do not only have ALPS to filter the Water!
Sometimes i get really angry that my English is so bad that i cant make it
clearer for you but to explain Technic is highly complicated.
That's just peachy. Just because there is so much water in the ocean, it is acceptable to dump the tanks and the radioactive water there?
But, even if they dump every single tank they have, it will still dissipate in the vastness of the Pacific Ocean.
qmantoo
That's just peachy. Just because there is so much water in the ocean, it is acceptable to dump the tanks and the radioactive water there?
But, even if they dump every single tank they have, it will still dissipate in the vastness of the Pacific Ocean.
The radiation will sink to the bottom, be moved around by currents and by taken up by animals and plants at the bottom of the food chain, slowly concentrating in higher organisms as each gets eaten.
=======================
You remember I mentioned the TEPCO video sky being strange? Well the crane has a piece missing from the upright section so I guess the software which blanks out the background is also blanking out part of the crane too. I dont think it is because it is white against a white sky background as there are other white structures against the sky in that scene.edit on 24 Jan 2014 by qmantoo because: adding the video para