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Quake's jolts were double nuke plant's design - North Anna Plant, USA [08Sep11] - 5 views

shared by D'coda Dcoda on 08 Sep 11 - No Cached
  • The magnitude-5.8 earthquake last month in Virginia caused about twice as much ground shaking as a nearby nuclear power plant was designed to withstand, according to a preliminary federal analysis.
  • Parts of the North Anna Power Station in Mineral, Va., 11 miles from its epicenter, endured jolts equal to 26% of the force of gravity (0.26g) from some of the higher-frequency vibrations unleashed by the quake, said Scott Burnell, spokesman of the Nuclear Regulatory Commission.
  • An NRC document says the reactors' containment structure was built to withstand 12% of the force of gravity (0.12g.) Dominion, the power company that operates the plant, says parts of the plant can handle up to 0.18g.STORY: Quake readiness of nuclear power plants unclear
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  • "It's the things inside the buildings that may have been shaken more than the design called for," Burnell said, adding that the buildings themselves appear to have been less affected. He said the analysis is based on a seismograph reading taken about 30 miles away by the U.S. Geological Survey.
  • Whatever the final numbers on shaking or ground motion, the plant withstood the jolts, Burnell said, indicating there's a "great deal" of safety margin."That margin was certainly enough for North Anna this time," he said.
  • "Maybe you shouldn't rely on the margin," said Edwin Lyman at the Union of Concerned Scientists, an organization critical of nuclear energy. "The jury is still out," he said, on whether the plant was adequately designed.The two reactors at the North Anna plant, which began operation in 1978 and 1980, have remained closed since the Aug. 23 quake. They automatically shut down after losing off-site power. Backup diesel generators kept their cores cool until electricity was restored several hours later.
  • Dan Stoddard, Dominion's senior vice president of operations, said Friday that initial readings from the facility's scratch plates and other monitors indicate its shaking during the quake exceeded its design, but he declined to give numbers. Dominion officials plan to brief the NRC today on those findings.
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Occupy Tokyo: Mass demonstrations go unreported by Japanese media [16Nov11] - 1 views

  • did you know that huge demonstrations have been taking place in Tokyo as well? We certainly didn't until a SOTT forum member posted a report on our forum. The general lack of awareness of the protests in Japan is probably due to the fact that there has been zero coverage of 'Occupy Tokyo' - which has grown out of the country's large (and growing) grassroots anti-nuclear movement - in Japan's mainstream media.
  • Several large demonstrations have taken place all over Japan in recent months, especially in Tokyo. The general mood is the same as elsewhere: ordinary people in Japan are fed up with their leaders' lies, particularly the lies told by TEPCO, the Tokyo Electric Power Company, and how the government has handled the Fukushima disaster. Or rather, how it has avoided handling it. This should all be eerily familiar to Americans of course; BP's lies and the US government's enabling role from the moment the Deepwater Horizon rig exploded in April 2010 has continued to this day, with the tragedy continuing to unfold in deathly silence. What is happening in Japan is almost a carbon copy; denial, smear campaigns, heavy-handed tactics and, of course, total media blackout. Up to one million people may have died as a result of Chernobyl, although we'll never really know the true death toll. Fukushima is many orders of magnitude worse...
  • People in Japan are very angry. Even though the Fukushima disaster is nowhere near ending (in fact, it is getting worse), Japanese media are simply not covering the fallout of the worst nuclear accident in history. Aftershocks from the Magnitude 9 earthquake which struck off the coast of Japan on March 11th are hardly mentioned in the Japanese media, but the fact is they are still ongoing and people are constantly stressed out by them. The economic aftershock is also beginning to take hold in a big way. The good news, says the SOTT forum member in Japan, is that people are now starting to wake up the fact that the Japanese government, TEPCO, and the media have been lying all this time and that more people are starting to take action to actually deal with the situation rather than wishfully think it will just blow away out into the Pacific Ocean.
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Physician: International medical community must immediately assist Japanese - Radioacti... - 1 views

  • : Dr. Helen Caldicott
  • All areas of Japan should be tested to assess how radioactive the soil and water are because the winds can blow the radioactive pollution hundreds of miles from the point source at Fukushima. Under no circumstances should radioactive rubbish and debris be incinerated as this simply spreads the isotopes far and wide to re-concentrate in food and fish. All batches of food must be adequately tested for specific radioactive elements using spectrometers. No radioactive food must be sold or consumed, nor must radioactive food be diluted for sale with non-radioactive food as radioactive elements re-concentrate in various bodily organs. All water used for human consumption should be tested weekly. All fish caught off the east coast must be tested for years to come. All people, particularly children, pregnant women and women of childbearing age still living in high radiation zones should be immediately evacuated to non-radioactive areas of Japan. All people who have been exposed to radiation from Fukushima – particularly babies, children, immunosuppressed, old people and others — must be medically thoroughly and routinely examined for malignancy, bone marrow suppression, diabetes, thyroid abnormalities, heart disease, premature aging, and cataracts for the rest of their lives and appropriate treatment instituted. Leukemia will start to manifest within the next couple of years, peak at five years and solid cancers will start appearing 10 to 15 years post-accident and will continue to increase in frequency in this generation over the next 70 to 90 years. All physicians and medical care providers in Japan must read and examine Chernobyl–Consequences of the Catastrophe for People and the Environment by the New York Academy of Sciences to understand the true medical gravity of the situation they face. I also suggest with humility that doctors in particular but also politicians and the general public refer to my web page, nuclearfreeplanet.org for more information, that they listen to the interviews related to Fukushima and Chernobyl on my radio program at ifyoulovethisplanet.org and they read my book NUCLEAR POWER IS NOT THE ANSWER. The international medical community and in particular the WHO must be mobilized immediately to assist the Japanese medical profession and politicians to implement this massive task outlined above. The Japanese government must be willing to accept international advice and help. As a matter of extreme urgency Japan must request and receive international advice and help from the IAEA and the NRC in the U.S., and nuclear specialists from Canada, Europe, etc., to prevent the collapse of Fukushima Dai-ichi Unit 4 and the spent fuel pool if there was an earthquake greater than 7 on the Richter scale.As the fuel pool crashed to earth it would heat and burn causing a massive radioactive release 10 times larger than the release from Chernobyl. There is no time to spare and at the moment the world community sits passively by waiting for catastrophe to happen. The international and Japanese media must immediately start reporting the facts from Japan as outlined above. Not to do so is courting global disaster.
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    Like is the wrong word, totally! Will share, thanks for the heads up.
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No Meltdowns or Bombs with Thorium Electrical Power Generation [09Jul11] - 0 views

  • After Fukushima, the Chinese governement have decided to finance the development of the much safer Thorium Fuelled Molten Salt Reactor - this way of producing energy is far safer than Pressure Water Reactor - it does not need pressure and there is no meltdown possibility at all. Further Thorium reactors cannot be used to make nuclear bombs.
  • Thorium is as common as lead, and should have been chosen after the war.At the end of the 2nd World War war plutonium was needed to make nuclear bombs, and this was the main reason for taking the PWR route, because Thorium reactors cannot. Edward Teller - the designer of the atomic bomb - on his death bed - said that a Thorium Fuelled Molten Salt Reactor was a safer design and that the basic Thorium fuel more available than Uranium. He was working on a paper for this type of reactor at his death (see below).
  • It would cost about 1 billion to design a Thorium reactor (Twitter is valued at 7 billion).
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Babcock to tackle Berkeley waste - UK [01Sep11] - 4 views

  • Babcock has been awarded a contract by Magnox for an intermediate-level waste (ILW) retrieval and processing project at the Berkeley site in the UK.
  • The contract has been awarded under the Magnox ILW Management Program, for which a framework contract was awarded to Babcock by Magnox in February 2011. ILW comprises a range of material including debris from the fuel elements, resins, sludges and graphite.
  • Under the new contract, Babcock will be undertaking ILW retrieval and processing of the fuel element debris from the Active Waste Vault 2 at the Berkeley site. The £14 million ($23 million) project will take some four years to complete.   Babcock said that key areas to be addressed under the contract include the fuel element debris retrieval from Vault 2 and the waste transfer module which will facilitate the transport of the waste to the sorting module, where low-level waste (LLW) and ILW can be separated. The waste can then be prepared for packaging in containers.
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  • The initial contracted phase involves concept design through to completion of the engineering design. Phase two will include the detail design, manufacture, integrated works testing, installation and inactive and active commissioning. Once the equipment has been formally accepted, the third and final phase of the project will cover the operation of the installed plant to remove the fuel element debris, and carry out the sorting and packaging into the appropriate containers.
  • Babcock said that it is "one of six companies to be awarded a framework contract for ILW retrieval and processing work across all the Magnox sites, and one of only three to have secured a contract for both solid and wet wastes." The value of the framework contract (within which individual projects are competed) is expected to be £300 million ($480 million) over ten years. The company noted that the Berkeley contract is one of the first projects to be competed under this framework.   Nuvia Ltd - which has also been appointed by Magnox to the framework contract - was awarded a contract in late June for the retrieval and processing of ILW from the chute silo at the Berkeley site. The contract pertains to the retrieval of "miscellaneous activated components" from the silo and packing them into shielded containers.
  • In December 2010, the two Magnox reactors at Berkeley became the first UK units to be placed in Safestore, a passive state during which they will be monitored and maintained until the site is completely cleared in about 65 years' time. With the fuel already having been removed from the reactors, final dismantlement is scheduled to begin in 2074, by which time the residual radioactivity will have decreased significantly.
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Green sidewalk makes electricity -- one footstep at a time - CNN.com - 0 views

  • London, England (CNN) -- Paving slabs that convert energy from people's footsteps into electricity are set to help power Europe's largest urban mall, at the 2012 London Olympics site.
  • The recycled rubber "PaveGen" paving slabs harvest kinetic energy from the impact of people stepping on them and instantly deliver tiny bursts of electricity to nearby appliances. The slabs can also store energy for up to three days in an on-board battery, according to its creator.
  • The young inventor envisages PaveGen systems being used to power off-grid appliances such as public lighting, illuminated street maps and advertising, and to be installed in areas of dense human traffic such as city centers, underground stations and school corridors
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    This is great innovative design... it will take another generation until ideas like this are standard place, but it shows the potential we have to solve energy issues.
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Pennsylvania nuclear plants prepare for possible flooding [09Sep11] - 3 views

  • Nuclear power plants in Pennsylvania are preparing to cope with flooding, but none has declared a state of emergency, US Nuclear Regulatory Commission spokesman Neil Sheehan said Thursday. All the Pennsylvania nuclear plants that could potentially be affected by flooding are in close communication with NRC, and with state and local officials, and the agency has resident inspectors at each plant who are monitoring the situation, Sheehan said. The plants were all operating at full power early Thursday, according to NRC data, except for Exelon Nuclear's Peach Bottom-3, which was at 88% power and has been gradually reducing its output for several days ahead of refueling outage.
  • Emergency diesel generators and their fuel tanks at those plants are "located at a higher elevation, in buildings designed to keep them dry," Sheehan said. Exelon Nuclear's Three Mile Island-1, located along the Susquehanna River, 10 miles southeast of Harrisburg, began its abnormal operating procedure for river flooding early Wednesday, Sheehan said. The river peaked at 291 feet above sea level Wednesday and was at 288 feet above sea level early Thursday. It is expected to crest Thursday at about 297 feet above sea level, he said.
  • If the river reaches 300 feet above sea level, then the plant would have to declare an unusual event, the least significant of NRC's four emergency levels, Sheehan said. If the river reaches 302 feet above sea level, the plant would need to shut and an alert, the next highest level of emergency, would need to be declared. "Important equipment" at Three Mile Island-1 is protected against flooding up to about 315 feet above sea level, Sheehan said.
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  • At Exelon Nuclear's Peach Bottom-2 and -3 reactors, about 18 miles south of Lancaster, Pennsylvania, the Conowingo Pond is expected to crest at 109 feet above sea level, Sheehan said.
  • Plant procedures require the reactors to be shut down if the pond reaches 111 feet above sea level. Exelon is working to control pond levels by using the spillways at the Conowingo Dam, he said. Exelon Nuclear does not anticipate it will need to shut down Three Mile Island-1 due to flooding, company spokeswoman April Schilpp said Thursday. "We have several feet of margin before any action would be required," Schilpp said. She declined to disclose at what point the plant would be required to shut down, but said it is a function of the rate of river flow and river level.
  • At PPL's Susquehanna-1 and -2 units in Salem Township, about 70 miles northeast of Harrisburg, the Susquehanna River is cresting at 39 feet above river level, Sheehan said. The plant entered its abnormal operating procedure for flooding earlier Thursday. "Major safety-related structures and components" of the plants are located about 75 feet above river level, he said. "The biggest impact on the plant" might be on its water intakes, which are being closely monitored, he said. There might be problems getting plant personnel to and from the site, so some staff might remain at the plant overnight, he said
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Savannah River Site Gets Nuclear Waste - National Academy of Sciences Draft Report Conf... - 3 views

  • Under Secretary of State for Arms Control Ellen Tauscher said on Monday, September 19, 2011, that high-level nuclear waste once destined for the Yucca Mountain repository will be sent, instead, to the Department of Energy’s Savannah River Site.
  • The Obama Administration has spent more than $1 billion in Stimulus Act funds cleaning up legacy Cold War nuclear and chemical waste at the site. Despite this effort, there is now more radioactive waste at SRS than when the clean-up started. The idea of bringing nuclear reactor waste and surplus weapons plutonium from around the world to SRS only exacerbates already chronic problems. The 312 square mile site near Aiken, South Carolina, was once the home of five reactors that churned out nuclear materials for H-bombs. The last reactor at SRS had to be shuttered for safety reasons during the Reagan Administration. Tritium, which is needed for nuclear weapons, is produced by Tennessee Valley Authority reactors and processed into gas for nuclear weapons at SRS.
  • The decision to use the Savannah River Site in South Carolina as a permanent storage facility is controversial. It is the most radioactive site in the United States. Aiken County, in which part of the site is located, sued the Department of Energy unsuccessfully when the Obama Administration decided not to use the multi-billion-dollar Yucca Mountain facility in Nevada for high-level nuclear waste storage that was supposed to be removed from SRS. Currently, millions of gallons of high-level nuclear waste are stored in 49 leaking tanks on the site as well as huge amounts of surplus plutonium. Deadly chemicals and radiation will contaminate the facility for thousands of years. “The Bomb Plant,” as locals refer to the site, is uniquely unsuitable for a permanent nuclear waste repository, according to leading geologists. It sits on an earthquake fault and one of the most important aquifers in the South. The sandy soil and swampy conditions make it highly vulnerable to waste seepage.
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  • Today, DOE’s National Nuclear Security Administration is paying the French-government-owned-company AREVA to supervise the construction of a new, multi-billion dollar facility to convert excess weapons plutonium into mixed oxide (MOX) fuel for use in civilian nuclear power reactors. (AREVA provided a less potent MOX fuel to Fukushima Daiichi Reactor Number Three last September that suffered a hydrogen explosion after the March earthquake and tsunami.) NNSA’s MOX plant is behind schedule and billions of dollars over budget. It does not have any paying customers for its fuel if it is ever made. It will create its own new waste stream. The Nuclear Regulatory Commission has not licensed the plant, and SRS and DOE management are late reporting on the cost overruns.
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The Death Of The Pacific Ocean [06Dec11] - 3 views

  • An unstoppable tide of radioactive trash and chemical waste from Fukushima is pushing ever closer to North America. An estimated 20 million tons of smashed timber, capsized boats and industrial wreckage is more than halfway across the ocean, based on sightings off Midway by a Russian ship's crew. Safe disposal of the solid waste will be monumental task, but the greater threat lies in the invisible chemical stew mixed with sea water.
  • This new triple disaster floating from northeast Japan is an unprecedented nuclear, biological and chemical (NBC) contamination event. Radioactive isotopes cesium and strontium are by now in the marine food chain, moving up the bio-ladder from plankton to invertebrates like squid and then into fish like salmon and halibut. Sea animals are also exposed to the millions of tons of biological waste from pig farms and untreated sludge from tsunami-engulfed coast of Japan, transporting pathogens including the avian influenza virus, which is known to infect fish and turtles. The chemical contamination, either liquid or leached out of plastic and painted metal, will likely have the most immediate effects of harming human health and exterminating marine animals.
  • Many chemical compounds are volatile and can evaporate with water to form clouds, which will eventually precipitate as rainfall across Canada and the northern United States. The long-term threat extends far inland to the Rockies and beyond, affecting agriculture, rivers, reservoirs and, eventually, aquifers and well water.   Falsifying Oceanography
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  • Soon after the Fukushima disaster, a spokesman for the International Atomic Energy Agency (IAEA) at its annual meeting in Vienna said that most of the radioactive water released from the devastated Fukushima No.1 nuclear plant was expected to disperse harmlessly in the Pacific Ocean. Another expert in a BBC interview also suggested that nuclear sea-dumping is nothing to worry about because the "Pacific extension" of the Kuroshio Current would deposit the radiation into the middle of the ocean, where the heavy isotopes would sink into Davy Jones's Locker.
  • The current is a relatively narrow band that acts like a conveyer belt, meaning radioactive materials will not disperse and settle but should remain concentrated   Soon thereafter, the IAEA backtracked, revising its earlier implausible scenario. In a newsletter, the atomic agency projected that cesium-137 might reach the shores of other countries in "several years or months." To be accurate, the text should have been written "in several months rather than years."
  • chemicals dissolved in the water have already started to reach the Pacific seaboard of North America, a reality being ignored by the U.S. and Canadian governments.   It is all-too easy for governments to downplay the threat. Radiation levels are difficult to detect in water, with readings often measuring 1/20th of the actual content. Dilution is a major challenge, given the vast volume of sea water. Yet the fact remains that radioactive isotopes, including cesium, strontium, cobalt and plutonium, are present in sea water on a scale at least five times greater than the fallout over land in Japan.
  • Japan along with many other industrial powers is addicted not just to nuclear power but also to the products from the chemical industry and petroleum producers. Based on the work of the toxicologist in our consulting group who worked on nano-treatment system to destroy organic compounds in sewage (for the Hong Kong government), it is possible to outline the major types of hazardous chemicals released into sea water by the tsunami.   - Polychlorinated biphenols (PCBs), from destroyed electric-power transformers. PCBs are hormone disrupters that wreck reproductive organs, nerves and endocrine and immune system.   - Ethylene glycol, used as a coolant for freezer units in coastal seafood packing plans and as antifreeze in cars, causes damage to kidneys and other internal organs.
  • - The 9-11 carbon compounds in the water soluble fraction of gasoline and diesel cause cancers.   - Surfactants, including detergents, soap and laundry powder, are basic (versus to acidic) compounds that cause lesions on eyes, skin and intestines of fish and marine mammals.   - Pesticides from coastal farms, organophosphates that damage nerve cells and brain tissue.   - Drugs, from pharmacies and clinics swept out to sea, which in tiny amounts can trigger major side-effects.
  • Start of a Kill-Off   Radiation and chemical-affected sea creatures are showing up along the West Coast of North America, judging from reports of unusual injuries and mortality.   - Hundreds of large squid washed up dead on the Southern California coast in August (squid move much faster than the current).   - Pelicans are being punctured by attacking sea lions, apparently in competition for scarce fish.   - Orcas, killer whales, have been dying upstream in Alaskan rivers, where they normally would never seek shelter.
  • Ringed seals, the main food source for polar bears in northern Alaska, are suffering lesions on their flippers and in their mouths. Since the Arctic seas are outside the flow from the North Pacific Current, these small mammals could be suffering from airborne nuclear fallout carried by the jet stream.   These initial reports indicate a decline in invertebrates, which are the feed stock of higher bony species. Squid, and perhaps eels, that form much of the ocean's biomass are dying off. The decline in squid population is causing malnutrition and infighting among higher species. Sea mammals, birds and larger fish are not directly dying from radiation poisoning ­ it is too early for fatal cancers to development. They are dying from malnutrition and starvation because their more vulnerable prey are succumbing to the toxic mix of radiation and chemicals.
  • The vulnerability of invertebrates to radiation is being confirmed in waters immediately south of Fukushima. Japanese diving teams have reported a 90 percent decline in local abalone colonies and sea urchins or uni. The Mainichi newspaper speculated the losses were due to the tsunami. Based on my youthful experience at body surfing and foraging in the region, I dispute that conjecture. These invertebrates can withstand the coast's powerful rip-tide. The only thing that dislodges them besides a crowbar is a small crab-like crustacean that catches them off-guard and quickly pries them off the rocks. Suction can't pull these hardy gastropods off the rocks.
  • hundreds of leather-backed sea slugs washed ashore near Choshi. These unsightly bottom dwellers were not dragged out to sea but drifted down with the Liman current from Fukushima. Most were still barely alive and could eject water although with weak force, unlike a healthy sea squirt. In contrast to most other invertebrates, the Tunicate group possesses enclosed circulatory systems, which gives them stronger resistance to radiation poisoning. Unlike the more vulnerable abalone, the sea slugs were going through slow death.
  • Instead of containment, the Japanese government promoted sea-dumping of nuclear and chemical waste from the TEPCO Fukushima No.1 plant. The subsequent "decontamination" campaign using soapy water jets is transporting even more land-based toxins to the sea.   What can Americans and Canadians do to minimize the waste coming ashore? Since the federal governments in the U.S. (home of GE) and Canada (site of the Japanese-owned Cigar Lake uranium mine) have decided to do absolutely nothing, it is up to local communities to protect the coast.  
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TEPCO: It May Be 100% Hydrogen Gas Inside the Pipe Connecting to Reactor I Containment ... - 2 views

  • First it was reported that "over 10,000 ppm" or over 1% of hydrogen gas was detected at 2 locations in the pipe that connects to the Containment Vessel of Reactor 1 at Fukushima I Nuclear Power Plant. Then it was allegedly "over 40,000 ppm" or 4%.According to Jiji Tsushin, TEPCO thinks the hydrogen gas concentration in the pipe may be 100%. 1,000,000 ppm.
  • Still, TEPCO says possibility of explosion is not necessarily high because there is no source nearby that could cause sparks. (Never mind that they were going to use blow torches to cut the pipes...)
  • Jiji Tsushin (12:28PM JST 6/24/2011):
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  • Concerning the detection of hydrogen gas in more than 1% concentration inside the pipe that connects to the Containment Vessel of Reactor 1 at Fukushia I Nuclear Power Plant, TEPCO announced on September 24 that it is highly probable that almost all the gas inside the pipe is hydrogen gas. TEPCO's Matsumoto said in the press conference, "Since there is no source for sparks, it cannot be said that there is a high risk of explosion immediately".
  • According to TEPCO, they measured the gas at the pipe exit several times in the afternoon of September 23. Each time, the result showed "flammable gas including hydrogen gas, over 100% ". The company plans to use the instrument that only measures hydrogen, in order to accurately measure the concentration of hydrogen.It's so TEPCO. First they used the device that could only measure up to 10,000 ppm, and that maxed out. Then they apparently used the device that could only measure up to 40,000 ppm, and that maxed out. So they brought in a bit more powerful instrument, but it measures all flammable gases including hydrogen.
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GE warns nuclear reactors could struggle in earthquake [03Oct11] - 2 views

  • A manufacturer of dozens of boiling water nuclear reactors in the country, including many on the East Coast, warned the Nuclear Regulatory Commission last year and reiterated last week that earthquakes could hinder its reactors from shutting down. GE Hitachi Nuclear Energy, which manufactured the boiling water reactors at Oyster Creek, Hope Creek and two plants in Pennsylvania, said that an earthquake could prevent rods that cool the reactor from being inserted. The rods cool the reactor down because they contain boron, which attracts neutrons. Without the rods, boron would be injected, a messier emergency solution.
  • "Earlier this week, they submitted the results of this evaluation they did and they found that friction that could result from an earthquake could impact the ability of control rods to insert all the way," said NRC spokesman Neil Sheehan Friday. "They serve a very important function and if there was a change of alignment in an earthquake and they could not insert all the way, it would be a problem." It’s not ideal to have a shutdown system fail at a moment of emergency, Sheehan said. "In a significant event like an earthquake, you would want to stop that from happening," Sheehan said, "because your safety systems could be challenged at the same time."
  • A spokesman for GE Hitachi Nuclear Energy said that when plants start up and shut down which amounts to about 1 percent of the time they run, added shaking from an earthquake could stop rods from easily sliding into the core. "There’s some friction," said spokesman Michael Tetuan. "They still insert, it’s just more friction than there would normally be." Last week’s NRC filing identified more than a dozen plants around the country that could be vulnerable, including Oyster Creek, Hope Creek and Limerick and Peach Bottom in Pennsylvania. Those plants were notified by GE Hitachi Nuclear Energy and recommended to participate in a surveillance program.
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  • "They identified this before Fukushima and before the earthquake in Virginia, but that takes on heightened significance now," Sheehan said.
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#Fukushima I Nuke Plant: TEPCO Stopped Water Treatment System [17Jun11] - 1 views

  • TEPCO announced on June 18 that it stopped the water treatment system for the highly contaminated water at Fukushima I Nuclear Power Plant at 12:54AM on June 18.
  • ted water at Fukushima I Nuclear Power Plant at 12:54AM on Jun
  • The stoppage was not due to system malfunction, TEPCO explained. The company stopped the system when the radiation level of the cesium absorption subsystem [by Kurion] had reached the set limit earlier than expected. TEPCO had planned to start the cooling water circulation system whereby the treated water is injected back into the Reactor Pressure Vessels on June 18, but it is not clear whether it will start as scheduled.
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  • The cesium absorption subsystem is set up inside the Central Waste Processing Facility. There are 4 rows of 6 cylinders that contain cesium absorption material [zeolite], and when the radiation level reaches 4 millisieverts/hour the cylinders are to be replaced. According to TEPCO, the system started the full run at 8PM on June 17, but the worker who was remote-operating the system noticed that the radiation measurement device on the surface of the cesium absorption cylinders was 4.7 millisieverts/hour.
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Beyond Nuclear White Paper on "Nuclear Power's Toxic Assets" and why Wall Str... - 1 views

  • The financial meltdown has amplified the already profound risks of investment in new nuclear reactors. The nuclear industry - recognizing this - is chasing potentially hundreds of billions of dollars in federal loan guarantees and taxpayer subsidies. Read the White Paper and the Fact Sheet synopsis
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Staff Tells N.R.C. That U.S. Rules Need Overhaul After Fukushima [18Jul11] - 1 views

  • The Nuclear Regulatory Commission’s rules are a patchwork that needs to be reorganized and integrated into a new structure to improve safety, the agency’s staff told the five members of the commission on Tuesday at a meeting.The session was called to consider reforms after a tsunami caused the triple meltdown at the Fukushima Daiichi nuclear plant in Japan. But how speedily the commission will take up the recommendations is not clear.
  • After the terrorist attacks of Sept. 11, 2011, the nuclear industry agreed to bring in assorted extra equipment, including batteries and generators, to cope with circumstances beyond what the plants were designed for. Such preparations are among the reasons that the commission has suggested that American reactors are better protected than Fukushima was. But back then, because their focus was on a potential terrorist attack, much of that equipment was located in spots that were not protected against floods, staff officials said.
  • “The insight that we drew from that is that if you make these decisions in a more holistic way, and you are more cognizant of what kinds of protections you are trying to foster, perhaps you can do them in a more useful way,’’ Gary Holahan, a member of the staff task force that reported to the commission, said on Tuesday. Another likely area of restructuring is to review the distinction that the commission makes between “design basis” and “beyond design basis” accidents. In the 1960s and 1970s, when the commission and a predecessor agency, the Atomic Energy Commission, issued construction permits for the 104 commercial reactors now running, they established requirements for hardware and training based on the safety factors arising from the characteristics of each site, including its vulnerability to flood or earthquake. Those are known as design-basis accidents.A variety of additional requirements involving potential problems that would be more severe but less likely (beyond design-basis accidents) have been added over the years.
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  • Yet much more is known today about quake vulnerability, the potential for flooding and other safety factors than when many plants were designed. As a result, according to the task force’s report, sometimes two adjacent reactors that were designed at different times will apply different assumptions about the biggest natural hazard they face.One of the study’s recommendations is that the reactors be periodically re-evaluated for hazards like floods and earthquakes.
  • There are a dozen recommendations in all. The commission’s chairman, Gregory B. Jaczko, said the five commissioners should decide within 90 days (the same period it took to develop the recommendations) whether to accept or reject them, although actually acting on them would take far longer.
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Areva, TVA Discuss Use of Mixed-Oxide Nuclear Fuel From Retired Weapons [21Feb11] - 1 views

  • French energy group Areva has entered tentative talks with the Tennessee Valley Authority that could pave the way for TVA’s nuclear plants to use fuel made from retired weapons. On Friday, the company announced it signed a letter of intent with TVA to initiate discussions on the use of fuel from the Department of Energy’s Mixed-Oxide Fuel Fabrication Facility. While it would not obligate TVA to use the fuel, the letter highlights the agency’s ongoing relationship with DOE in evaluating the fuel-from-weapons program
  • Scheduled to begin operating in 2016, the mixed-oxide facility at DOE’s Savannah River site in South Carolina will blend plutonium from disassembled weapons with depleted uranium oxide, according to the National Nuclear Security Administration. Using the fuel in commercial reactors would make the plutonium unfit for explosives and help meet a commitment made by the United States and Russia in 2000 to dispose of 68 metric tons of surplus plutonium. Shaw Areva MOX Services Llc. holds the contract to build and operate the South Carolina facility
  • According to NNSA, more than 30 commercial reactors currently use mixed-oxide fuel, including at plants in the United Kingdom, Germany, France, Belgium and Switzerland.
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  • “As the world leader in MOX fuel production, Areva has a long, successful history of producing reliable mixed-oxide fuel in Europe and has many satisfied customers around the globe. We look forward to partnering with TVA as it evaluates the potential use of MOX fuel in its nuclear plants,” Jacques Besnainou, CEO of Areva North America, said in a release
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    pushing the notorious MOX fuel
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Insider in charge of monitoring radiation at TMI says radioactive release was 100s or 1... - 1 views

  • Startling Revelations about Three Mile Island Disaster Raise Doubts Over Nuke Safety, Institute for Southern Studies by Sue Sturgis, April 3, 2009:
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Japan's Nukes Following Earthquake - 1 views

  • TEPCO has just released "diaries" from early in the accident giving us a better view of the sequence of events from the operators point of view.
  • The bulk of the materials, distributed on discs with digital files, show reams of raw numerical data. They include photos of broadsheet computer printouts and other formatted charts with thousands of data points for measurements of reactor heat, pressure, water levels, fuel rod positions and the status of cooling pumps, among other functions. Tokyo Electric, or Tepco, also released a smaller batch of more recent documents highlighting its various efforts to restore electric power to each of the reactors, a task that was achieved on April 26. But a series of what Tepco terms reactor "diaries" from the first 48 hours after the quake include the most visually arresting materials. These feature snapshots of whiteboards on which plant employees—11 of whom remained in each of the plant's three control rooms—jotted down status updates on the progress of the reactor shutdowns and steadily increasing radiation levels around the facility.
  • Using red, black or blue ink markers, the plant operators appear to have scribbled down the notes quickly. Many are smudged or illegible. Others depict complex diagrams and are peppered with technical jargon or acronyms such as SBO for "station blackout." http://online.wsj.com/article/SB10001424052748704281504576329011846064194.html
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  • So helpless were the plant's engineers that, as dusk fell after Japan's devastating March 11 quake and tsunami, they were forced to scavenge flashlights from nearby homes. They pulled batteries from cars not washed away by the tsunami in a desperate effort to revive reactor gauges that weren't working properly. The plant's complete power loss contributed to a failure of relief vents on a dangerously overheating reactor, forcing workers to open valves by hand.And in a significant miscalculation: At first, engineers weren't aware that the plant's emergency batteries were barely working, the investigation found—giving them a false impression that they had more time to make repairs. As a result, nuclear fuel began melting down hours earlier than previously assumed. This week Tokyo Electric Power Co., or Tepco, confirmed that one of the plant's six reactors suffered a substantial meltdown early in Day 1. http://online.wsj.com/article/SB10001424052748704322804576302553455643510.html
  • Lots of interesting information in this paper from TEPCO:http://www.tepco.co.jp/en/nu/fukushima-np/images/handouts_110525_01-e.pdfUnits 1-4 did not have RCIC.  They had isolation condensers.  Not only that, the isolation condensers were water cooled with 8 hours of water in the condenser reservoir. 
  • HPCI required DC power to operate.  The turbine lube oil pump was DC; it didn't have a shaft oil pump.  I think this may be common here too, anyone willing to verify that?That's why they had trouble so quick:  8 hours later and without AC power they had no way to get water to the pressure vessel.  About the same time the instruments died from a lack of battery power is about the time they lost the isolation condenser from a lack of water.They also verify that they didn't have the hardened vent modification.
  • Fukushima may have a group that could tackle the nuclear crisis looming over Japan. The Skilled Veterans Corps, retired engineers and professionals, want to volunteer to work in the dangerous conditions instead of putting younger generations at risk. More than 200 Japanese retirees are seeking to replace younger workers at Fukushima while the plant is being stabilized. http://www.digitaljournal.com/article/307378
  • The Nuclear and Industrial Safety Agency (NISA) on June 6 revised the level of radioactivity of materials emitted from the crisis hit Fukushima No. 1 Nuclear Power Plant from 370,000 terabecquerels to 850,000 terabecquerels. (from 10,000,000 curies to 22,972,972.97 curies)http://mdn.mainichi.jp/mdnnews/news/20110606p2a00m0na009000c.html
  • The following article focus's on US spent fuel storage safety, Several members of Congress are calling for the fuel to be moved from the pools into dry casks at a faster clip, noting that the casks are thought to be capable of withstanding an earthquake or a plane crash, they have no moving parts and they require no electricity. but there is a reference to Fukishima's dry storage casks farther into the article.But Robert Alvarez, a former senior adviser to the secretary of energy and expert on nuclear power, points out that unlike the fuel pools, dry casks survived the tsunami at Fukushima unscathed. “They don’t get much attention because they didn’t fail,” he said.http://www.nytimes.com/2011/07/06/business/energy-environment/06cask.html?_r=2&pagewanted=1&ref=science
  • In 1967, Tepco chopped 25 meters off the 35-meter natural seawall where the reactors were to be located, according to documents filed at the time with Japanese authorities. That little-noticed action was taken to make it easier to ferry equipment to the site and pump seawater to the reactors. It was also seen as an efficient way to build the complex atop the solid base of bedrock needed to better protect the plant from earthquakes.But the razing of the cliff also placed the reactors five meters below the level of 14- to 15-meter tsunami hitting the plant March 11, triggering a major nuclear disaster resulting in the meltdown of three reactor cores.http://online.wsj.com/article/SB10001424052702303982504576425312941820794.html
  • Toyota was a key executive who was involved in the Fukushima No. 1 plant construction.It is actually common practice to build primary nuclear plant facilities directly on bedrock because of the temblor factor.Toyota also cited two other reasons for Tepco clearing away the bluff — seawater pumps used to provide coolant water needed to be set up on the ground up to 10 meters from the sea, and extremely heavy equipment, including the 500-ton reator pressure vessels, were expected to be brought in by boat.In fact, Tepco decided to build the plant on low ground based on a cost-benefit calculation of the operating costs of the seawater pumps, according to two research papers separately written by senior Tepco engineers in the 1960s.
  • If the seawater pumps were placed on high ground, their operating costs would be accordingly higher."We decided to build the plant at ground level after comparing the ground construction costs and operating costs of the circulation water pumps," wrote Hiroshi Kaburaki, then deputy head of the Tepco's construction office at the Fukushima No. 1 plant, in the January 1969 edition of Hatsuden Suiryoku, a technical magazine on power plants.Still, Tepco believed ground level was "high enough to sufficiently secure safety against tsunami and typhoon waves," wrote Seiji Saeki, then civil engineering section head of Tepco's construction office, in his research paper published in October 1967.
  • Engineers at Tohoku Electric Power Co., on the other hand, had a different take on the tsunami threat when the Onagawa nuclear plant was built in Miyagi Prefecture in the 1980s.Like Fukushima, the plant was built along the Tohoku coast and was hit by tsunami as high as 13 meters on March 11.Before building the plant, Tohoku Electric, examining historic records of tsunami reported in the region, conducted computer simulations and concluded the local coast could face tsumani of up to 9.1 meters.Tohoku Electric had set the construction ground level at 14.8 meters above sea level — which barely spared the Onagawa plant from major damage from 13-meter-high tsunami that hit in March.
  • Former Tepco worker Naganuma said many locals now feel they have been duped by Tepco's long-running propaganda on the safety of its nuclear facilities, despite the huge economic benefits the plant brought to his hometown of Okuma, which hosts the Fukushima No. 1 plant.
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    from a nuclear worker's forum so the dates run from May 20, 2011 to July 15, 2011...these are the points these nuclear workers thought important about Fukushima
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Is there a big crack in the ground at Fukushima?[02Aug11] - 1 views

  • http://translate.google.com/translate?js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&sl=ja&tl=en&u=http%3A%2F%2Falcyone.seesaa.net%2Farticle%2F218011433.html&act=url  Perhaps a better Japanese translation is available for paragraphs like this: The first crack to expand premises Fukushima If released into the atmosphere as steam began to black biennial magma underground, dozens of days, until it could cause radioactive contamination of large magnitude I think strong. The other people on campus would not have started already. Again can not even approach. It can only be death from exposure. 
  • http://youtu.be/9RrwDxS9S8E 
  • August 2, 2011 at 9:39 am I don’t see anything that looks like Liquid Air in the video, but I do see what appears to me to be the Shared Spent Fuel Pool on fire and with open criticality – which is more shocking than anything I’ve ever witnessed. 
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  • The first day we heard about the possibility of open criticality at Fukushima, a week or so after the Earthquake in March- I was shocked. It didn’t even register that this was possible. Now, it’s a regular occurrence to see it openly on these videos. (again – look for the gamma artifacts on the video – little white flashes that appear randomly on the screen) Five months ago everyone in the nuclear industry would have said what this video depicts is impossible and should be avoided at all human costs – and yet here we see it. 
  • Most of them are still unwilling to admit that it’s happening, yet it has. The jig is up, the noose is out….
  • f you need a definition of ‘criticality’ here it is (from BBC) This means the fuel rods are exposed to the air. Without water, they will get much hotter, allowing radioactive material to escape.
  • More remarkably, the Tokyo Electric Power Company (Tepco), which owns the power station, has warned: “The possibility of re-criticality is not zero“. If you are in any doubt as to what this means, it is that in the company’s view, it is possible that enough fissile uranium is present in the cooling pond in enough density to form a critical mass – meaning that a nuclear fission chain reaction could start.
  • The pool lies outside the containment chamber.  So if it happened, it would lead to the enhanced and sustained release of radioactive materials – though not to a nuclear explosion – with nothing to stop the radioactive particles escaping.  http://www.bbc.co.uk/news/science-environment-12762608
  • Looks like they have that now – F.C.
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    Starts with a rough translation from Japanese, there's a video link here as well.
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Dark horse tipped to lead RWE's nuclear phase-out [04Aug11] - 1 views

  • Dutch energy executive Peter Terium is the most likely successor to RWE chief executive Jürgen Grossmann, according to company insiders cited in German news reports. Grossmann, whose contract expires at the end of September 2012, defended RWE's investments in nuclear power plants vigorously but unsuccessfully against government plans to phase out atomic energy by 2022. The 59-year-old's lobbying earned him the nickname "Atom-Rambo" and even prompted Germany's Nature and Biodiversity Conservation Union to award him the dubious title of "Dinosaur of the Year 2010."
  • News that Peter Terium, 47, is likely to be the fresh face to replace Grossmann surprised many observers. But the dark-horse candidate has been with RWE since 2003. He first RWE Supply & Trading and later oversaw the takeover of Dutch energy company Essent, which he currently heads.
  • Reinventing the wheel Hubertus Bardt, an energy and environmental policy expert at the Cologne Institute for Economic Research, said Grossmann shouldn't be faulted for aggressively defending his company's substantial investment into nuclear power
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  • Other potential successors to Grossmann are RWE chief commercial officer Leonhard Birnbaum and chief operating officer Rolf Martin Schmitz. Whoever lands the top job is likely to face a turbulent time. "One large challenge will be the task of bringing RWE's image - and the image of other energy companies - back into a positive light," a labor union representative told Reuters. "We expect a new orientation towards international and national energy politics from the new RWE chief."
  • "Jürgen Grossmann is very well known as someone who fought for the future of nuclear power plants," he told Deutsche Welle. "But the fact is that he was fighting for the future of his company, and for the investment his company has made over decades."
  • Nevertheless, Grossmann in June characterized the political movement to phase out nuclear power as reckless, saying consumers would be hit with higher electricity prices and expressing fear that a slump in RWE stock value could leave the company vulnerable to a hostile takeover. According to Bardt, Grossmann's stance runs counter to broader societal trends and political activity.
  • "He has been very, very prominent in a position advocating longer use of nuclear power, which in the end was not successful," Bardt said. "So that may be a problem in terms of public relations and of public acceptance of RWE." Bardt added that RWE and companies like it needed to "find new markets and new business opportunities."
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Accelerate decontamination , Japan [26Aug11] - 1 views

  • Some 100,000 people are still living as evacuees away from their homes in the wake of the severe accidents at Tokyo Electric Power Co.'s Fukushima No. 1 nuclear power plant. Kyodo News has reported that some 17,000 children in Fukushima Prefecture have changed schools or kindergartens because of radiation fears. Of these children, some 8,000 moved out of the prefecture.
  • Given this situation, it is imperative that the central government vigorously push the work of decontaminating areas contaminated with radioactive substances released from the nuclear power reactors. The central and local governments also should provide psychological care to both children who moved to new schools or kindergartens and children who have remained at their schools and kindergartens.
  • The Diet is expected to soon enact a special law under which the central government will be responsible for disposing of highly radioactive rubble and sludge, and decontaminating radioactive soil. In some cases, the central and local governments will carry out decontamination work together. The cost will be shouldered by Tepco.
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  • To accelerate the decontamination work, the Kan administration has decided to set up an office to deal with radioactive contamination within the Cabinet and a decontamination team in Fukushima Prefecture.
  • The education and science ministry estimates that radiation accumulation at 35 places inside the warning area in a period of one year from the start of the nuclear fiasco will exceed 20 millisieverts per year, a level sufficient enough to trigger an evacuation order. At 14 of these places, it is estimated that the radiation level will be more than 100 millisieverts per year. At one place, it is estimated that the level will be 508.1 millisieverts per year and at another 223.7 millisieverts per year.
  • The data underline the need for the central government to carry out decontamination work methodically and with perseverance. It also should take a serious look at the fact that radioactive contamination has spread outside Fukushima Prefecture. Beef cows in many parts of eastern Japan were fed on radioactive rice straw and the cows were was shipped to all the prefectures except Okinawa. Radioactive contamination has also been detected in sludge of sewage treatment plants in many parts of eastern Japan.
  • The central government must establish methods to decontaminate areas so that local governments can easily emulate them. It is expected to collect necessary data from a model project in the Ryozan area in Date, Fukushima Prefecture. Decontamination will be carried out in an area of 100-meter-by-100-meter square that will include agricultural fields and houses with extremely high radiation levels.
  • Depending on the nature of soil, the central government will try several decontamination methods such as directing high pressure water to wash away radioactive substances and removing soil after hardening it with chemicals. After determining the cost and benefit of the contamination work, and the amount of radioactive substances collected, it will write a decontamination manual as well as develop computer software to measure the effect of decontamination work.
  • Another problem is how to deal with radioactive rubble in areas devastated by the March 11 earthquake and tsunami, and radioactive sludge that has accumulated at sewage treatment plants. Decontamination of areas contaminated with radioactive substances will also produce contaminated soil. The central government must hurriedly find places for long-term storage of contaminated rubble, sludge and soil.
  • Your Party has made a reasonable proposal concerning decontamination work. It calls for giving priority to decontaminating areas close to Fukushima No. 1, radiation "hot spots," as well as kindergartens and parks. Its main aim is to minimize the effect of radiation on children and pregnant women. The central government and other parties should carefully study the proposal and take legislative and other necessary actions.
  • To ensure effective decontamination, detailed radiation maps will be indispensable. A reliable system to accurately gauge radiation levels of various foods also should be set up. Decontamination will be a difficult and time-consuming task. It is important that the central and local governments give accurate information about the situation to local residents and avoid giving a false hope about when evacuees can return to their homes. The central government envisages a long-term goal of limiting people's radiation exposure to 1 millisievert per year. But Mr. Shunichi Tanaka, a former acting chairman of the Atomic Energy Commission, who carried out decontamination work in Iidate and Date in Fukushima Prefecture, says that in some places in the prefecture, it is impossible to lower the radiation level to 1 millisievert per year and that a realistic goal should be 5 millisieverts per year. Informed public discussions should be held on this point.
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    A letter to the editor of Japan Times
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