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Originally posted by Tallone
I ought to start off here with the warning 'beware the shills on this thread'.
But this must be a game of tag. Because now we have ZWorlds post straight after yours. More cut and pastes from the last two articles in the post by Human0815. Perhaps in case none of us saw them and your combined effort went to waste?
Originally posted by vox2442
Originally posted by Human0815
Edit: i forgot: i am not a Engineer, i am not a Nuclear Physician and i am not very educated
in the Physics,
You're also clearly not Japanese. You make too many mistakes in your Japanese when you post it, and your writing style certainly doesn't contain any of the mistakes that a Japanese person with your level of English would make.
Where are you really from?
Originally posted by Silverlok
We speculated back then that 5 and 6 in cold shut down might have lost cooling ( cold shut down needs constant cooling too just , obviously not as much as active reactors ) and had some criticalies in the cores , or spent fuel pools
A Japanese nuclear plant had a malfunction in its ventilation system, the country’s atomic regulator said. There was no radiation leakage outside the reprocessing plant northeast of Tokyo. Three ventilation units failed to restart for about 20 minutes yesterday due to a timer malfunction, the Nuclear and Industrial Safety Agency said in a statement today. The plant in Tokai village in Ibaraki prefecture is operated by the Japan Atomic Energy Agency. The incident was rated 1, the lowest level, on the seven- step International Nuclear and Radiological Event Scale, the agency known as NISA said. Tokai was the site of an incident in 1999, when workers at a uranium processing plant started a chain reaction while producing nuclear fuel. Two employees later died from radiation exposure and the event was rated 4 on the INES scale. The Fukushima accident north of Tokyo, where Tokyo Electric Power Co. is still trying to contain radiation leaks after the March earthquake and tsunami caused three meltdowns, is rated 7 on the INES scale.
An extensive area of more than 8,000 square kilometers has accumulated cesium 137 levels of 30,000 becquerels per square meter or more after the accident at the Fukushima No. 1 nuclear power plant, according to Asahi Shimbun estimates. The affected area is one-18th of about 145,000 square kilometers contaminated with cesium 137 levels of 37,000 becquerels per square meter or more following the 1986 Chernobyl accident in the former Soviet Union. The contaminated area includes about 6,000 square kilometers in Fukushima Prefecture, or nearly half of the prefecture.
Fukushima Prefecture, the third largest in Japan, covers 13,782 square kilometers. The government has not disclosed the size of the area contaminated with cesium 137 released from the crippled Fukushima No. 1 plant. Cesium 137 has a long half-life of about 30 years. The Asahi Shimbun calculated the size of the contaminated area based on a distribution map of accumulated cesium 137 levels measured from aircraft, which was released by the science ministry on Sept. 8.
The estimated size may increase in the future because the distribution map will be subject to corrections and because it currently covers only five prefectures. The contaminated area includes about 1,370 square kilometers in northern Tochigi Prefecture, about 380 square kilometers in southern Miyagi Prefecture and about 260 square kilometers in Ibaraki Prefecture.
Tokyo, Sept. 13 (Jiji Press)--A Japanese research team has come up with a new explanation to how a blast occurred at the No. 4 reactor building of Tokyo Electric Power Co.'s Fukushima No. 1 power plant on March 15 in the early days of the country's worst nuclear accident. The No. 4 reactor is different from the three severely damaged reactors at the plant in that it contained no fuel. Fuel for the No. 4 reactor was being stored in a pool in the reactor building when the March 11 earthquake and tsunami hit the plant, because the facility was undergoing routine inspections. Hydrogen and steam from the fuel storage pool is likely to have been a major cause of the March 15 explosion, said the team of researchers from the University of Tokyo, the Japan Atomic Energy Agency and others.
The conclusion will be announced at an Atomic Energy Society of Japan meeting that begins Monday in the southwestern Japan city of Kitakyushu, Fukuoka Prefecture. TEPCO says the blast was caused by hydrogen generated at the No. 3 reactor. The hydrogen made its way into the No. 4 reactor through pipes common to the two facilities, according to the power company. But the research team is doubtful, saying TEPCO's explanation does not explain why the explosion at the No. 4 reactor building occurred 20 hours after a blast at the No. 3 reactor building.
The team used a flask filled with water in an experiment to better understand the situation at the No. 4 reactor's fuel storage pool just before its explosion. The team exposed water to radiation under three conditions. In one, the temperature of the water was set at room temperature, in another at 97 degrees Celsius, and in the third at boiling point.
TOKYO (Kyodo) -- Radioactive cesium that was released into the ocean in the nuclear accident at the Fukushima Daiichi power plant is likely to flow back to Japan's coast in 20 to 30 years after circulating in the northern Pacific Ocean in a clockwise pattern, researchers said Wednesday.
A total of 13,500 terabecquerels of radioactive cesium-137 is slightly more than 10 percent of that of the residual substance left in the northern Pacific after previous nuclear tests, according to the researchers.
Originally posted by qmantoo
Daiichi sea dumping of 9070 + 1323 tons 'low level waste' and monitoring a "deep well" (last paragraph) - whatever that is? How deep is a 'deep well' I wonder?
6 partner company's workers, who maintained water treatment faculties, conducted contamination check of full-face masks when they returned from the work site to 1F's Main Anti-Earthquake Building. As a result, inner side of the filter for 4 out of the 6 workers were confirmed to be contaminated. We will confirm whether the 6 workers might have absorbed contaminated materials inside of their bodies using whole body counter.
As much as 50 percent to 90 percent of radioactive cesium on the ground in forested areas as a result of the Fukushima No. 1 nuclear power plant accident is concentrated on fallen leaves and branches, according to a measurement by experts. The discovery indicates it is possible to reduce large amounts of ground radiation by removing fallen forest materials, and likely will become basic data for decontamination measures. A research team led by Tsukuba University Prof. Yuichi Onda reported the results of the measurement, which was carried out between June and August, at a review meeting of the Education, Culture, Sports, Science and Technology Ministry on Tuesday.
The research team compared densities of radioactive cesium and its cumulative quantities at a coniferous cedar forest and a forest with ample broad-leaved beech trees, both in Kawamatamachi, Fukushima Prefecture, and within the government-designated evacuation zone. The cumulative amount of radioactive cesium in living leaves at the cedar forest was found to be higher than in the broad leaf forest.
However, in fallen leaves at the broad leaf forest, the cumulative amount of radioactive cesium was three times to six times higher than in fallen material at the cedar forest. Of the cumulative quantity of radioactive cesium in the cedar forest, about 50 percent to 90 percent was found to be concentrated on fallen branches. In the broad leaf forest, more than 90 percent of radioactive cesium was found to be accumulated on fallen leaves, according to the research.
The horrible news from Japan continues to be ignored by the western corporate media. Fukushima’s radioactive fallout continues to spread throughout the archipelago, deep into the ocean and around the globe—including the US. It will ultimately impact millions, including many here in North America. The potentially thankful news is that Fukushima’s three melting cores may have not have melted deep into the earth, thus barely avoiding an unimaginably worse apocalyptic reality. But it’s a horror that humankind has yet to fully comprehend. As Fukushima’s owners now claim its three melted reactors approach cold shutdown, think of this:
At numerous sites worldwide—including several in the US—three or more reactors could simultaneously melt, side-by-side. At two sites in California—Diablo Canyon and San Onofre—two reactors each sit very close to major earthquake faults, in coastal tsunami zones.
Should one or more such cores melt through their reactor pressure vessels (as happened at Fukushima) and then through the bottoms of the containments (which, thankfully, may not have happened at Fukushima), thousands of tons of molten radioactive lava would burn into the Earth.
The molten mass(es) would be further fed by thousands of tons of intensely radioactive spent fuel rods stored on site that could melt into the molten masses or be otherwise compromised.
All that lava would soon hit groundwater, causing steam and hydrogen explosions of enormous power.
Those explosions would blow untold quantities of radioactive particles into the global environment, causing apocalyptic damage to all living beings and life support systems on this planet. The unmeasurable clouds would do unimaginable, inescapable injury to all human life.
Fukushima is far from over. There is much at the site still fraught with peril, far from the public eye. Among other things, Unit Four’s compromised spent fuel pool is perched high in the air. The building is sinking and tilting. Seismic aftershocks could send that whole complex—and much more—tumbling down, with apocalyptic consequences.
Six months after the Fukushima Dai-1 nuclear incident began, Tokyo Electric Power Co. (TEPCO) is still struggling to gain control of the crippled reactors by cooling them to safe temperature. Yoshinori Moriyama, deputy director-general of the Nuclear and Industrial Safety Agency (NISA) and in charge of nuclear accident measures, told the foreign press on 7 September TEPCO has begun using another cooling system the “core spray line” of the No. 3 reactor to help bring the temperature down in that unit. The core spray line is a part of the Emergency Core Cooling System (ECCS), a collection of sub-systems that can be called on in emergencies to cool a reactor when normal cooling operations are lost. It’s being used is in addition to the feed water line system currently cooling all three reactors. Until the core spray line was put into operation on 1 September, the reactor’s core was cooled by rising steam from the bottom of the pressure vessel supplied by the feed water line. With the addition of the core spray line, water is now being pumped into the core spray ring header situated above the core causing water droplets to fall onto the core and cool it directly. As it has increased the amount of water pumped through the core spray line, TEPCO has been reducing the amount of water used in the feed water line. Right now, the latter is maintaining a flow of 4 cubic meters and hour, while the core spray line is maintaining a flow of 3 cubic meters/h. The core spray line could not be used until recently because TEPCO first had to survey the pertinent piping and valves of this subsystem, both inside and outside the reactor building, to see if they were still operable. Given the high radiation in the area, this was difficult, but workers completed the job in July. After the system’s feasibility was confirmed in August, workers attached a temporary hose connection to the core spray line using a make-up water line and began pumping. “As a result, the temperature at the bottom of reactor number 3 is now below 100 degrees Centigrade,” said Moriyama. “And we can see it is being cooled quite steadily.” Given the success of the operation, TEPCO reported today that it has begun employing the core spray line of reactor No. 2. The bottom of reactor No. 1 has been registering below 100 degrees since July even without that reactor’s core spray line.please continue:
Originally posted by zworld
Now, I need someone to find maps of the local currents at different times of the year. I could do it but I am piled high and still trying to take a break. Hopefully someone else will do it. If you would like to I appreciate it greatly.
i think this is all not very helpful,
maybe we should split the Topic of "F'Shima" into different Topics,
like i wrote one Thread dedicated only for the technical Matters
and one with a Humanistic Approach and Media-Information?
Originally posted by Tallone
As for your suggestion to create another thread, well, go right ahead if you must. There are already more than 200 threads on the topic of the Fukushima nuclear disaster already - just on ATS. One more won't matter here or there.