Nuclear Power Safety

Unable to find recent news of Fukushima processing more radiactive water. Water purifyinf operation suspended June 18, 2011


" until they knew what was causing the rising levels they would not know when the operation would be able to resume.

"But I'd say it's not something that would take weeks," he added.

Dealing with the radioactive water is a key step to bringing the crisis at the Fukushima Daiichi plant under control, reports the BBC's Roland Buerk from Tokyo.

It is the rainy season in Japan and the pools of contaminated water could overflow, adding to radiation already released into the sea, adds our correspondent.

Earlier this week, officials had warned the radioactive pools were in danger of spilling into the sea within a week."



BBC News - Japan nuclear: Radiation halts water clean-up


2030 Uranium depleted on Earth?


Fukushima's Water Cleanup Halted - The Daily Beast




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BmanMcfly said:

I chose my words more carefully then that... get it on a big screen and zoomed in as much as possible, then tell me, what do YOU suppose that was??

Click to expand...

There is more inforamtion being learned and released about he effects of the hydrogen explosions. Structural damage also occurred to the concrete containment floor of the reactors.

JAIF website was down.

http://www.jaif.or.jp/english/



Tepco releases don't seem cover the capacity of processing the radio-active water, and what is being done with the filtered out materials.

TEPCO : Press Room | Press Releases



IAEA releases don't seem to give the details on processign radioactive water at fukushima,

Fukushima Nuclear Accident Update Log




"Water treatment system at Fukushima plant achieves decontamination"

Photo of water Treatment baskets and residue,



http://english.kyodonews.jp/news/2011/06/99153.html



"The successful trial run of the water treatment system paves the way for the start, possibly by the end of June, of operations to cool the damaged nuclear power reactors using water recycled in the decontamination system to establish a circulating cooling system as part of efforts to contain the crisis triggered by the earthquake and tsunami in March.

The utility known as TEPCO said the level of both radioactive cesium-134 and cesium-137 in the toxic water had dropped to one hundred-thousandth, achieving the target of 100 becquerels per cubic centimeter or less."



http://mdn.mainichi.jp/mdnnews/news/20110625p2g00m0dm015000c.html



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"FUKUSHIMA, Japan, July 15 (UPI) -- A unit treating radioactive water at Japan's Fukushima No. 1 nuclear power plant was shut down after a pipe junction snapped, officials said

Read more: Water system at Fukushima breaks again - UPI.com

"Tepco said repairing the break will require human intervention, but the high radiation levels of 100-150 millisieverts per hour in the surrounding area make it very difficult to get to the machine and it was unclear when the repairs would be completed, The Asahi Shimbun reported."

Read more: Water system at Fukushima breaks again - UPI.com





Water system at Fukushima breaks again - UPI.com

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Not get off track but I wonder if some will demand that any investigation check for explosives since it is reported/known that explosions took place at the reactors? The reason I am asking is this seems to be a common complaint by some regarding 911. Also should they not also check for thermite? How can we be sure that the earthquake resulted in the reactor failures:mrgreen:

mike2810 said:

Not get off track but I wonder if some will demand that any investigation check for explosives since it is reported/known that explosions took place at the reactors? The reason I am asking is this seems to be a common complaint by some regarding 911. Also should they not also check for thermite? How can we be sure that the earthquake resulted in the reactor failures:mrgreen:

Click to expand...

I think there definitely should be an investigation into Tepco's response to this situation... the difference being, in this situation the investigation would be more along the lines of determining wrong-doing that could have helped mitigate some of the problems...

Oh, and there is NO EVIDENCE to even suggest any level of sabotage, though even if there were, because of the secure nature of a nuclear power plant like that, I doubt any real outside information could be garnered.

Any criminality in this situation would only deal with the cover-up / slow release of information.

(also, not everything is a conspiracy)

Not all stupidity is conspiracy.

The US said that hardened vents would prevent hydrogen explosions in the USplants. But apparently Japan had the upgraded hardened vents, and still had hydrogen explosions. Why are teh US plnats now safer than Fukushima?

Radioactive water has been aproblem since day 1, and having only one plant on line that keeps breaking down seems unresponsive to the reaqlities of the problem. There should probably be 5 water treatment plants, and the plants should have been built months ago. Where are the plans to build more plants for treating readiactive water?


Maybe one plant should be able to handle enough radiactive water under ideal circumstances, and without a need for safety factors. The radioactive water is ruining the ocean, leaking out, and without sufficiently treated water, the spent fuel rod pools and reactors cannot be cooled to safer levels. Radiactive gasses are being released by the reacotrs, because there is not enough water to keep the reactors and pools cool enough.

Maybe Tepco is confident that ordinary people will not see that Tepco is trying to save money, by not building more radiactive water treatment plants.



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"A desalination device that forms part of the crisis-hit Fukushima Daiichi nuclear power plant's key water decontamination system halted for a number of hours Sunday in the latest glitch at the plant, Tokyo Electric Power Co. said late Sunday.

The plant operator said it resumed desalinating decontaminated water to be recycled as coolant for troubled reactors with a backup device about seven and a half hours after the halt occurred around noon, while continuing to cool the reactors with water supplemented from a nearby dam.

While looking into the cause of the latest trouble, Tokyo Electric said it will also add piping for the system's cesium decontamination component made by Areva SA of France because the volume of flow has not reached the expected level."


Trouble continues at Fukushima nuclear plant's water treatment system - The Mainichi Daily News

Would a second or even third water processing system hel to purify radiation contmainated water?



"Prime Minister Naoto Kan removed three top officials in charge of Japanese nuclear energy policy Thursday, taking aim at the cozy ties between regulators and the power industry that were exposed after the Fukushima Dai-ichi nuclear plant accident.

The three officials include Nobuaki Terasaka, the leader of the Nuclear and Industrial Safety Agency, the nation's main nuclear regulatory body. The agency has been criticized for allowing inadequate safety measures at the Fukushima plant, including insufficient defenses against the tsunami that was unleashed by a deadly earthquake on March 11.


Read more: Japan's top nuclear energy officials fired

Japan's top nuclear energy officials fired






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Thanks for posting updates - like fashion trends, no one really cares anymore which makes finding reliable updates harder.

Here is a Link to a Breaking News Thread about how far the fuel rods melted into the containement vessel:

http://www.debatepolitics.com/break...ima-fuel-rods-may-have-completely-melted.html



"Almost no fuel remains at its original position," Tepco said. The simulation shows that the fuel may have penetrated the concrete floor by up to 65cm, just 37cm from the reactor's outer steel wall.
Tepco said that about 60% of the fuel in the two other reactors that experienced meltdown had dropped onto the concrete base, but had caused less damage.

Fukushima fuel rods may have completely melted | World news | guardian.co.uk


Fukushima fuel rods may have completely melted | World news | guardian.co.uk




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"The firm said as much as 45 tonnes of water had leaked through the concrete wall of a building being used to purify contaminated water that is then used to cool molten fuel in the plant's three damaged reactors.

The firm has piled up sandbags to prevent further leaks but fears some water may have already found its way into a gutter that connects to the Pacific ocean about 600 metres away."

"Workers temporarily halted the purification apparatus after spotting a puddle of water on Sunday [12-4-11]. They later recorded 1.8 millisieverts [mSv] per hour of gamma radiation and 110mSv per hour of beta radiation on the surface of the puddle, the company said in a statement.



Fukushima plant leaks radioactive water | World news | guardian.co.uk




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