– Fission feared at Fukushima reactor No. 2 (Japan Times, Nov. 2, 2011):
Tokyo Electric Power Co. said Wednesday that particles from melted fuel in reactor 2 at the Fukushima No. 1 plant may have temporarily triggered a criticality incident.
Although the Nuclear and Industrial Safety Agency said there have been no drastic changes in the reactor’s temperature and pressure level, and the reactor itself is stable overall, the discovery may affect the plan by Tepco and the government to achieve cold shutdown of all three crippled reactors by the end of the year.
Suggesting that criticality, or a sustained nuclear chain reaction, may have occurred temporarily or partially, Tepco said one hundred thousandth of a becquerel per cubic centimeter of xenon-133 and xenon-135 was detected in gas samples.
Xenon-133 and xenon-135 are materials created through nuclear fission, and are not usually detected even when a reactor is in operation, as fuel rods are covered with zirconium metal. This means fission may have occurred in the melted fuel.
As the half-life of these two materials is short — five days for xenon-133 and nine hours for xenon-135, the xenon was probably created recently.
Tepco injected boric acid, which can prevent nuclear fission, into the reactor early Wednesday morning.
Tsuyoshi Misawa, a reactor physics and engineering professor at Kyoto University’s Research Reactor Institute, said if Tepco’s data are correct, “it’s clear that the detection (of xenon-133 and -135) comes from nuclear fission.”
“This amount of xenon would not be detected unless there was a certain degree of fission chain reaction,” so it is highly possible criticality took place, Misawa said.
Tepco will conduct detailed research on the gas survey to confirm if the data are accurate.
Yoshinori Moriyama, a NISA spokesman, said there is a possibility fission started from some small pieces of melted fuel. But the fission was probably small and partial, he said, adding, “large-scale fission was unlikely.”
He explained that most of the fuel core and control rods, which act to stop fission, may have melted together, so it is hard to imagine that a major criticality accident occurred.
Tepco spokesman Junichi Matsumoto said the test results suggest that either small-scale fission occurred in the melted fuel, or conditions to trigger criticality were temporarily met for some other reason.
But because the reactor’s temperature and pressure level have not changed, the fission would not have been on a large scale, Matsumoto said.
He said the same thing could also happen at reactors 1 and 3.
Misawa meanwhile said the government has been aiming for cold shutdown, in which the temperatures at the reactors are constant and controlled, under the assumption that criticality would not occur. The latest development indicates cold shutdown is still a long way off, he said.
But NISA’s Moriyama brushed aside such concerns. “We are still trying to achieve cold shutdown by year’s end,” he said, adding the important thing is to bring the reactors to safe and stable status rather than meeting the deadline.
More info:
– Japanese Physician’s Diagnose Radiation As Cause Of Unusual Changes In Children (Video)
– Japanese Government Official Drinks Fukushima Nuclear Plant Water!
– Tokyo’s High Radiation Supermarket: It’s Radium Again, Emitting 40 Millisieverts/Hr Radiation
– The Fukushima Melt-Outs: Chernobyl Versus Fukushima – An Overview
– Japanese Government Still Refusing To Evacuate Fukushima Children (Video)
– Cesium-137 Flow Into Ocean 30 Times Greater Than Stated By TEPCO: Report (Kyodo)
– AND NOW: 110 Volunteers and Residents to ‘DECONTAMINATE’ High Radiation Area in Fukushima City
– Fukushima Beef Now Officially Banned (BBC News – Video)
– AND NOW: 110 Microsieverts Per Hour Detected At Tokyo Supermarket
– France’s IRSN Estimate Of Radioactive Cesium-137 Leaked Into The Pacific Ocean: 27,100 Terabequerels = 20 Times TEPCO’s Estimate!
– AND NOW: Burned Radioactive Sewage Sludge Dumped In Tokyo Bay (Video)
– Japan Considers Building New Capital In Case Of Emergency (Telegraph, Oct. 27, 2011)
– If Fukushima Reactor No. 4 Fuel Rods Spill On The Ground Tokyo And Yokohama Will Be Lost
– 80-120 Microsieverts Per Hour in Koriyama City, 60 Km From Fukushima Nuclear Plant
– Fukushima: Water Containing 2,600 Bq/Liter Tritium Sprayed In Plant Compound
– BBC Report: Fukushima Engineer Warns Of Nuclear Power Nightmare (Oct. 24, 2011 – Video)
– AND NOW: Japanese Government BURNS HIGHLY RADIOACTIVE SOIL In New Experiment To Remove Radioactive Cesium (!!!)
– Extremely High Levels Of Radiation Detected At 2 Schools In Chiba Prefecture
– Total Insanity: ‘Decontamination’ In Japan (Video)
– 58 Microsieverts Per Hour Detected In Used Car At Japanese Port
– AND NOW: Dangerously Radioactive Second-Hand Cars Haunting Japan
– AND NOW: Radioactive Concrete At 2.5 Microsieverts Per Hour Sold In Japan Home Center Store
– Fukushima Re-Criticality Neutron Feast – Dancing With The Devil In North America (VIDEO)
– Kashiwa City’s Radioactive Dirt: 276,000 Bq/Kg of Cesium!!!!!
– High Internal Radiation Exposure Found In Japanese Children
– Germany’s ZDF ‘Heute Show’ Making Fun Of TEPCO & Japanese Government Criminals
– Radiation in Fukushima Rivers, Wells Soars
– Over 50% Of Tested Seafood Samples From Japanese Supermarkets Contain Radioactive Cesium
– Neutron Ray From Uranium Detected In Tokyo (Video)
– Fukushima Nuclear Plant: 450 Tonnes of Groundwater Per Day Seeping into Reactor/Turbine Buildings
– Japanese Communities Detect Chernoblyl-Level Radiation (ABC News – Video)
– TOKYO: 29 Out Of 30 Teas Contaminated With Radioactive Cesium, 3 Exceeding Provisional Safety Limit
– Local Government Official Oyama Koichi Tells Young People To Leave Japan
– Prof. Chris Busby Update On Supplements To Block Fukushima Radiation (Video)
– Radioactive Debris In Japan: Government To Municipalities: Don’t Tell Anyone – Don’t Say No
– Massive Amounts Radioactive Ash And Sludge Pile Up In Japan
– Tokyo: 3.60 Microsieverts Per Hour In Roadside Mud (Video – Oct. 16, 2011)
– 20 Radiation Hot Spots Around Tokyo
– High Concentrations Of Radioactive Cesium Found In PLANKTON (NHK, Oct. 15, 2011)
– Japan Nuclear Agency Secretly Calculated Fukushima Meltdown Risks
– Radioactive Fukushima Rice Headed For Restaurants And Schools … And Consumers In Tokyo!
– Tokyo’s Setagaya Officials: Radiation Spike Unlikely From Fukushima (Sure!)
– ALL Fukushima Rice All Cleared For Shipment … Radioactive Or Not!
– Fukushima Journalist Takes On TEPCO
– Prof. Hirotada Ohashi, One Of The ‘Plutonium Brothers’, Was A TEPCO Employee!
– NHK Caught Manipulating Truth About Radiation Danger Again
– High Radiation Dose Readings Marked In Spots In Tokyo, Chiba
– How Kindergartens and Elementary Schools Enjoy Radioactive Autumn in Japan!
– TEPCO Uses Low-Level Radioactive Water To Spray Fukushima Nuclear Compound
– 300,000 Bq/m² of Radioactive Cesium at Okutama Region Where Tokyo’s Drinking Water Comes From
– Tokyo Tap Water In Crisis, Comes From Chernobyl-Like Contaminated Area (100,000 – 300,000 Bq/m2):
However, Okutama area, where Tokyo tap water comes is as dangerous as “contaminated area” in Chernobyl.
According to the data above, 100,000 ~ 300,000 Bq/m2 was measured in Okutama area.
– Casualties Mount in Japanese Radiation War – Fukushima on Facebook
– Osaka: Fukushima Made Bridge Girders Read 700 Microsieverts
– Senior Fukushima Nuclear Engineer: ‘It’s Endless, Endless’ – ‘The Task Will Never End’
– Incinerator Near Tokyo Shut Down, High Levels Of Radioactive Cesium Detected In Ash
– CRIMINALS OF THE WORST KIND: Japanese Government Will No Longer Measure PLUTONIUM (The Deadliest Substance On The Planet)!!!
– Japan: New Government Maps Show Wide Dispersion of Plutonium and Strontium
– Whistleblower Prof. Kenichi Matsumoto: Japan’s PM ‘Isolated, Out Of His Depth’ (Video)
– Tokyo To Burn Massive Amounts Of Radioactive Debris From Tohoku
– Japanese PM Considered EVACUATION of Tokyo (ABC News)
– Fukushima Desolation Worst Since Nagasaki As Residents Flee
– Fukushima Evacuation-Ready Zone To Be Abolished On Sep. 30, 2011
– Radioactive Train In Tokyo Metropolitan Area: Over 10 Microsievert/Hour Inside Train (Video)
– 105,600 Bq/Kg of Radioactive Cesium Found On Apartment Bldg Rooftop in Yokohama City
– BBC Fukushima Propaganda Debunked (Video)
– Fairewinds: Safety Problems In All (Mark I) Reactors Designed Like Fukushima – Introducing A Japanese Language Edition
– Tokyo: 60,000 Rally Against Nukes
– Japanese Government To Send Seafood, Goods Made in Fukushima, Miyagi, Iwate As AID To Developing Nations
– Radioactive Japan: 42,000 Bq/Kg Cesium In Dirt In Yokohama City
– Japan To Promote Use Of Potentially Radioactive Lumber With ‘Eco-Point’ Incentive
– Japan: Area Of More Than 8,000 Square Km Accumulated Cesium-137 Levels Of 30,000 Bec/Sq Meter
– Huge Amounts Of Neptunium 239 Detected 60 Km From Fukushima!!!
– Prof. Chris Busby On Children Suffering Heart Attacks In Fukushima
– Geiger Counter Measures 0.378 Microsieverts In Tokyo Train Station 1 Meter Above Ground!!!
– Japan ‘Misstated’ Radiation … ‘And So Exposed People Unnecessarily’ (WSJ)
– Fukushima Nuclear Plant Back Into Recriticality
– Fukushima: Radioactive Release Into Sea Estimated Triple
– More Cover-Ups: TEPCO’s Extreme Blackout (Submits Almost Entirely Redacted Documents – Video)
– Former Japan PM Kan: TEPCO Wanted To Abandon Fukushima! … ‘NOBODY MIGHT LIVE IN TOKYO NOW’
– Mystery Flash At Fukushima Nuclear Plant (Video – Sep. 5, 2011)
– 4 Above Limit Radioactive Cesium Tea Products Reach Market
– 28,000 Becquerels/Kg Of Radioactive Cesium In Wild Mushrooms in Fukushima
– Fukushima Released 76 TRILLION Bequerels Of Plutonium 239
– DOOMED: Japan Gov. To Allow All RADIOACTIVE Material To Be Burned And Buried
– Fukushima Cesium-137 Leaks ‘Equal 168 Hiroshimas’
Fukushima City should have been evacuated a long time ago:
– Japanese Government To Finally Admit Forced Indefinite Long-Term Depopulation Of Fukushima Communities
– Fukushima Now Equal To 50 Plus Chernobyls & 3,000 Billion Lethal Doses Of Radiation
How about Tokyo?
– ‘Severely Contaminated Hotspots’ Found In Tokyo
Here is what the Japanese and all the other elite puppet governments are really doing here:
TREASON! GENOCIDE! RADIATION EXPERIMENTS!
Watch these Japanese officials just walk away from begging Fukushima citizens:
– This Is Outrageous: Japanese Government Killing Its Own People In Fukushima (Video)
The Japanese people are used as guinea pigs:
– Wall Street Journal: How the Japanese Government Failed Residents of Namie, Fukushima
– Japan’s Nuclear Agency Hides Children Radiation Results
– AND NOW: Japanese Government Sets 100 Millisieverts As New Lifetime Standard
… these are not “dosimeters” but “glass badges” that passively collect radiation information. It won’t help these children or their parents to avoid high-radiation areas and spots, it won’t tell them how much radiation they will have been exposed unless they are sent in to a company to interpret the data.
This is outrageous and it is called mind-control:
– AND NOW … Meet The 3 Japanese Scientists That Say: ‘Plutonium is Not That Dangerous’ (Video)
There are no safe levels of radiation:
– Prof. Karl Grossman: ‘Radiation Hormesis An Incredible Lie’
– Japanese Cancer Expert on the Fukushima Situation: ‘I Just Cannot Feel Any Hope For Japan’s Future’
– IAEA Admits: There Is No Such Thing As ‘Safe’ Levels Of Radiation
– Dr. Helen Caldicott On The Japan Nuclear Disaster – The Truth MSM Won’t Tell You! (Video)
– Dr. Helen Caldicott: How Nuclear Apologists Mislead The World Over Radiation
– Dr. Brian Moench: There Is No ‘Safe’ Exposure To Radiation
– Are There Safe Levels of Radiation? How Much Radiation Is Safe? (Must-read!!!!!)
Radiation exposure is increased by a factor of a trillion. Inhaling even the tiniest particle, that’s the danger.
Yo: So making comparisons with X-rays and CT scans has no meaning. Because you can breathe in radioactive material.
Hirose: That’s right. When it enters your body, there’s no telling where it will go. The biggest danger is women, especially pregnant women, and little children. Now they’re talking about iodine and cesium, but that’s only part of it, they’re not using the proper detection instruments. What they call monitoring means only measuring the amount of radiation in the air. Their instruments don’t eat. What they measure has no connection with the amount of radioactive material.
Dr. Helen Caldicott (Co-founder of Physicians for Social Responsibility):
You’ve bought the propaganda from the nuclear industry. They say it’s low-level radiation. That’s absolute rubbish. If you inhale a millionth of a gram of plutonium, the surrounding cells receive a very, very high dose. Most die within that area, because it’s an alpha emitter. The cells on the periphery remain viable. They mutate, and the regulatory genes are damaged. Years later, that person develops cancer. Now, that’s true for radioactive iodine, that goes to the thyroid; cesium-137, that goes to the brain and muscles; strontium-90 goes to bone, causing bone cancer and leukemia. It’s imperative … that you understand internal emitters and radiation, and it’s not low level to the cells that are exposed. Radiobiology is imperative to understand these days.”
Bizarre:
Big Brother Japan:
Radiation is now everywhere:
– 27,000 Becquerels/Kg Found At Kindergarten Over 200 Miles From Fukushima Nuke Plant
– 4,000 Potentially Radioactive Cows Shipped from One Farm in Namie-Machi, Fukushima
– Japan Government To Lift Ban On Sales And Shipment Of Radioactive Fukushima Beef
– Fukushima: 186,000 Becquerels Per Kg Radioactive Cesium in Aizu Wakamatsu City
– Japan: Radioactive Beef Served in 296 Schools in 12 Prefectures
– Japan: Radioactive Compost Has Already Spread Wide
– Radioactive Fukushima Eggs: 60 Becquerels/Kg Cesium (Ukraine Safety Limit Is 6 Becquerels/Kg)
– And Now Over 2,600 Meat Cows Suspected Of Being Fed With Radioactive Rice Hay!
– And Now: Government To Survey Half Of Japan For Soil Contamination
– Radiation in Fukushima City Order of Magnitude Higher Than Official Numbers?