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D'coda Dcoda

Japan Nuclear Disaster Models From 2002 [26Aug11] - 0 views

  • A Japan Atomic Energy Institute paper from 2002 recently surfaced online. This paper was the technical estimations of what would happen if a nuclear reactor on the Pacific coast of Japan were to have a catastrophic accident. The models included radiation dispersal under a variety of scenarios and also illness and death rates under multiple scenarios. The plant for the experiment is  “1100MWe BWR5 with Mark-II type containment– One of the most common plant type in Japan“. Based on the location on the maps included in the paper the reactor used was either unit 6 at Fukushima Daiichi or one of units 1-4 at Fukushima Daini. The scenario is for one reactor failure, not 3 reactor failures plus spent fuel pools as was experienced at Fukushima Daiichi. Of the included reactor scenarios the one that closest resembles the Fukushima disaster is failure of cooling + overpressure damage. Below are two graphs, one in English, another in Japanese. They show the reactor damage scenarios, distance from the plant and mortality.
  • 20 km away will cause max. 1 out of 500 deaths, an exclusion zone of 100 km will cause max. 1 out of 5000 deaths. The diagram may explain the 20 km exclusion zone. all curves go down beond 20 km away from the plant. Acute deaths = deaths for direct exposure to NPP wave radiaton + explosion deaths. The two sharply-dropping lines on the Japanese chart show acute death. Please make note that at 100 Km. distance values are not 0. Moreover X axis is logarithmic. Tokio-Fuku distance= 230 Km. Our estimate for 230 Km. death rate ~ 10*-4.Tokio Metropolis population 34,500,000 (2007)34500000/10000.  3450 deaths in Tokio only. Again, this is based on this model scenario, not exact situations currently going on. These mortality models include late onset cancers and also survivable cancers based on the details in the report.
  • Some interpretations of the data in this report using the closest to Fukushima Daiichi model available. These do not mean specifically these things will happen, this is what the model shows under the scenario details they used: The model used does not differentiate between a unit 2 style containment failure and a unit 3 or Chernobyl style containment failure. A containment failure can vary greatly in how much of the nuclear fuel is released into the environment. The containment system in the model reactor is newer, technically improved and larger than the containment used in units 1-4 at Fukushima Daiichi. Unit 1 at Fukushima Daiichi has a slightly smaller containment than units 2-4. There have been concerns expressed that the smaller containment had less volume, making it more prone to failure. These slight differences in the reactors would result in changes to the amount of radiation released and would then change all these other outcomes.
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  • There’s the MOX factor to consider too, the addition of MOX fuel is not included in the model. MOX fuel in reactor 3 may have played a role in the speed of the meltdown and adds plutonium and related isotopes into the releases different than what would be seen with uranium fuel. The report in English, includes a series of PowerPoint slides at the end. *This report also talks at length about ways radiation is absorbed by people, they may not be included in the Japanese language report.
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    has charts
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Chris Huhne: Nuclear power a costly failure [15Oct11] - 0 views

  • Britain is still paying for nuclear-generated electricity consumed a generation ago because of the hidden costs of an industry reared on the expectation of public subsidies, the Energy Secretary Chris Huhne said yesterday. He told the Royal Society in London that the nuclear industry and the Government should show that they have learned from their past mistakes if they are to retain public support for a renaissance in nuclear power. “And some of those mistakes are not small,” he said in a keynote address. “Nuclear policy is a runner to be the most expensive failure of post-war British policy-making, and I am aware that this is a crowded and highly contested field.” http://www.independent.co.uk/news/science/chris-huhne-nuclear-power-a-costly-failure-2370340.html
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Report: Fireman dies after working in Fukushima after quake - "Vomited blood frequently... - 0 views

  • This video clip is from the Q&A session after the lecture by an actor-and-anti-nuke-activist Taro Yamada (man on the right), at the “National Forum of School Lunch” held in Sapporo City on November 6、2011. The death of the member of the special rescue unit of the Fire Department, whom the questioner in the video is talking about, hasn’t been confirmed officially nor reported in MSM. The person called “Dr. Sakiyama” in the video is Dr. Hisako Sakiyama, a specialist in radiation exposure at Takagi School and ex-chief researcher at National Institute of Radiological Sciences. She was a researcher at MIT before working for the Institute. Translation and captioning by tokyobrowntabby.
  • Transcript Excerpts On October 26, a friend of mine in Osaka passed away. He was a rescue squad member and had been sent to work in disaster-affected areas for a long time, such as Iwate or Fukushima. In July, he was found to have been internally exposed to radiation. All his team members had been, too. But their mission didn’t end. [...] Eventually they got sick and realized they couldn’t continue their duties any more. All the team members including him quit the rescue squad. Before they quit, they had been berated by their supervisors as unpatriotic. In a little more than 3 months since his internal exposure was found in July, my friend vomited blood frequently and finally died of renal failure.
  • About renal failure after a nuclear catastrophe (via study): The main pathologies in both districts [near the Chernobyl meltdown] were anemia of pregnancy, renal disorders, transient hypertension, and abnormalities of fat metabolism.
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4 generator failures hit US nuclear plants [09Oct11] - 0 views

  • Four generators that power emergency systems at U.S. nuclear plants have failed when needed since April, an unusual cluster that has attracted the attention of federal inspectors and could prompt the industry to re-examine its maintenance plans. None of these failures has threatened the public. But the diesel generators serve the crucial function of supplying electricity to cooling systems that prevent a nuclear plant’s hot, radioactive fuel from overheating, melting and potentially releasing radiation into the environment. That worst-case scenario happened this year when the Fukushima Dai-ichi nuclear plant in Japan lost all backup power for its cooling systems after an earthquake and tsunami. Three diesel generators failed after tornadoes ripped across Alabama and knocked out electric lines serving the Tennessee Valley Authority’s Browns Ferry nuclear plant in April. Two failed because of mechanical problems and one was unavailable because of planned maintenance.
  • Another generator failed at the North Anna plant in Virginia following an August earthquake. Generators have not worked when needed in at least a dozen other instances since 1997 because of mechanical failures or because they were offline for maintenance, according to an Associated Press review of reports compiled by the U.S. Nuclear Regulatory Commission. “To me it’s not an alarming thing,” said Michael Golay, a professor at the Massachusetts Institute of Technology who studies risk at nuclear plants. “But if this trend were to continue, you’d certainly want to look into it.”
Dan R.D.

Those with nothing are coping best - Asia-Pacific, World News - Independent.ie [20Mar11] - 0 views

  • nine-tenths of the country which suffered no damage at all, that strength appears to have gone missing. Japan as a whole is suffering a kind of nervous breakdown. In towns nowhere near the tsunami zone, normal life has effectively stopped, with offices and shops closed, pavements empty and factory production lines silent. The only cars on the streets are queuing for petrol.
  • Even before the disaster, Japan's Prime Minister Naoto Kan was dogged by cabinet resignations, leadership plots and a 20 per cent approval rating. His government still appears paralysed.And there is, of course, another problem large enough to poleaxe a better man than Mr Kan. Some 150 miles north of Tokyo, the crippled Fukushima nuclear plant is leaking radiation in quantities which the government admits could have an impact on human health.
  • The morale meltdown is, in fact, another symptom of government failure: an immediate failure to be clear and upfront about the risks, and a longer-term failure to behave trustworthily over nuclear power.
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  • Only four years ago, another, milder, tsunami on the other side of Japan damaged another Tepco reactor, causing a leak of radioactivity.Few, if any, lessons appear to have been learned from this earlier incident.
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Report Assails Japan Response to Fukushima Daiichi Nuclear Accident [26Dec11] - 0 views

  • From inspectors’ abandoning of the Fukushima Daiichi nuclear power plant as it succumbed to disaster to a delay in disclosing radiation leaks, Japan’s response to the nuclear accident caused by the March tsunami fell tragically short, a government-appointed investigative panel said on Monday.
  • The failures, which the panel said worsened the extent of the disaster, were outlined in a 500-page interim report detailing Japan’s response to the calamitous events that unfolded at the Fukushima plant after the March 11 earthquake and tsunami knocked out all of the site’s power.
  • The panel attacked the use of the term “soteigai,” or “unforeseen,” that plant and government officials used both to describe the unprecedented scale of the disaster and to explain why they were unable to stop it. Running a nuclear power plant inherently required officials to foresee the unforeseen, said the panel’s chairman, Yotaro Hatamura, a professor emeritus in engineering at the University of Tokyo. “There was a lot of talk of soteigai, but that only bred perceptions among the public that officials were shirking their responsibilities,” Mr. Hatamura said.
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  • Tokyo Electric had assumed that no wave would reach more than about 20 feet. The tsunami hit at more than twice that height.
  • Officials of Japan’s nuclear regulator present at the plant during the quake quickly left the site, and when ordered to return by the government, they proved of little help to workers racing to restore power and find water to cool temperatures at the plant, the report said.
  • the workers left at Fukushima Daiichi had not been trained to handle multiple failures, and lacked a clear manual to follow, the report said. A communications breakdown meant that workers at the plant had no clear sense of what was happening.
  • In particular, an erroneous assumption that an emergency cooling system was working led to hours of delay in finding alternative ways to draw cooling water to the plant, the report said. All the while, the system was not working, and the uranium fuel rods at the cores were starting to melt.
  • devastatingly, the government failed to make use of data on the radioactive plumes released from the plant to warn local towns and direct evacuations, the report said. The failure allowed entire communities to be exposed to harmful radiation, the report said. “Authorities failed to think of the disaster response from the perspective of victims,” Mr. Hatamura said.
  • But the interim report seems to leave ultimate responsibility for the disaster ambiguous. Even if workers had realized that the emergency cooling system was not working, they might not have been able to prevent the meltdowns. The panel limited itself to suggesting that a quicker response might have mitigated the core damage and lessened the release of radiation into the environment.
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U.S. nuke regulators weaken safety rules [20Jun11] - 0 views

  • Federal regulators have been working closely with the nuclear power industry to keep the nation's aging reactors operating within safety standards by repeatedly weakening standards or simply failing to enforce them, an investigation by The Associated Press has found.Officials at the U.S. Nuclear Regulatory Commission regularly have decided original regulations were too strict, arguing that safety margins could be eased without peril, according to records and interviews.The result? Rising fears that these accommodations are undermining safety -- and inching the reactors closer to an accident that could harm the public and jeopardize nuclear power's future.
  • Examples abound. When valves leaked, more leakage was allowed -- up to 20 times the original limit. When cracking caused radioactive leaks in steam generator tubing, an easier test was devised so plants could meet standards.Failed cables. Busted seals. Broken nozzles, clogged screens, cracked concrete, dented containers, corroded metals and rusty underground pipes and thousands of other problems linked to aging were uncovered in AP's yearlong investigation. And many of them could escalate dangers during an accident.
  • Despite the problems, not a single official body in government or industry has studied the overall frequency and potential impact on safety of such breakdowns in recent years, even as the NRC has extended dozens of reactor licenses.Industry and government officials defend their actions and insist no chances are being taken. But the AP investigation found that with billions of dollars and 19 percent of America's electricity supply at stake, a cozy relationship prevails between industry and the NRC.Records show a recurring pattern: Reactor parts or systems fall out of compliance. Studies are conducted by industry and government, and all agree existing standards are "unnecessarily conservative."
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  • Regulations are loosened, and reactors are back in compliance."That's what they say for everything ...," said Demetrios Basdekas, a retired NRC engineer. "Every time you turn around, they say, 'We have all this built-in conservatism.' "The crisis at the decades-old Fukushima Dai-ichi nuclear facility in Japan has focused attention on nuclear safety and prompted the NRC to look at U.S. reactors. A report is due in July.But the factor of aging goes far beyond issues posed by Fukushima.
  • Commercial nuclear reactors in the United States were designed and licensed for 40 years. When the first were built in the 1960s and 1970s, it was expected that they would be replaced with improved models long before their licenses expired.That never happened. The 1979 accident at Three Mile Island, massive cost overruns, crushing debt and high interest rates halted new construction in the 1980s.Instead, 66 of the 104 operating units have been relicensed for 20 more years. Renewal applications are under review for 16 other reactors.As of today, 82 reactors are more than 25 years old.The AP found proof that aging reactors have been allowed to run less safely to prolong operations.
  • Last year, the NRC weakened the safety margin for acceptable radiation damage to reactor vessels -- for a second time. The standard is based on a reactor vessel's "reference temperature," which predicts when it will become dangerously brittle and vulnerable to failure. Through the years, many plants have violated or come close to violating the standard.As a result, the minimum standard was relaxed first by raising the reference temperature 50 percent, and then 78 percent above the original -- even though a broken vessel could spill radioactive contents."We've seen the pattern," said nuclear safety scientist Dana Powers, who works for Sandia National Laboratories and also sits on an NRC advisory committee. "They're ... trying to get more and more out of these plants."
  • Sharpening the pencilThe AP study collected and analyzed government and industry documents -- some never-before released -- of both reactor types: pressurized water units that keep radioactivity confined to the reactor building and the less common boiling water types like those at Fukushima, which send radioactive water away from the reactor to drive electricity-generating turbines.The Energy Northwest Columbia Generating Station north of Richland is a boiling water design that's a newer generation than the Fukushima plants.Tens of thousands of pages of studies, test results, inspection reports and policy statements filed during four decades were reviewed. Interviews were conducted with scores of managers, regulators, engineers, scientists, whistleblowers, activists and residents living near the reactors at 65 sites, mostly in the East and Midwest.
  • AP reporters toured some of the oldest reactors -- Oyster Creek, N.J., near the Atlantic coast 50 miles east of Philadelphia and two at Indian Point, 25 miles north of New York City on the Hudson River.Called "Oyster Creak" by some critics, this boiling water reactor began running in 1969 and is the country's oldest operating commercial nuclear power plant. Its license was extended in 2009 until 2029, though utility officials announced in December they will shut the reactor 10 years earlier rather than build state-ordered cooling towers. Applications to extend the lives of pressurized water units 2 and 3 at Indian Point, each more than 36 years old, are under NRC review.Unprompted, several nuclear engineers and former regulators used nearly identical terminology to describe how industry and government research has frequently justified loosening safety standards. They call it "sharpening the pencil" or "pencil engineering" -- fudging calculations and assumptions to keep aging plants in compliance.
  • "Many utilities are doing that sort of thing," said engineer Richard T. Lahey Jr., who used to design nuclear safety systems for General Electric Co., which makes boiling water reactors. "I think we need nuclear power, but we can't compromise on safety. I think the vulnerability is on these older plants."Added Paul Blanch, an engineer who left the industry over safety issues, but later returned to work on solving them: "It's a philosophical position that (federal regulators) take that's driven by the industry and by the economics: What do we need to do to let those plants continue to operate?"Publicly, industry and government say that aging is well under control. "I see an effort on the part of this agency to always make sure that we're doing the right things for safety. I'm not sure that I see a pattern of staff simply doing things because there's an interest to reduce requirements -- that's certainly not the case," NRC chairman Gregory Jaczko said in an interview.
  • Neil Wilmshurst, director of plant technology for the industry's Electric Power Research Institute, acknowledged the industry and NRC often collaborate on research that supports rule changes. But he maintained there's "no kind of misplaced alliance ... to get the right answer."Yet agency staff, plant operators and consultants paint a different picture:* The AP reviewed 226 preliminary notifications -- alerts on emerging safety problems -- NRC has issued since 2005. Wear and tear in the form of clogged lines, cracked parts, leaky seals, rust and other deterioration contributed to at least 26 of the alerts. Other notifications lack detail, but aging was a probable factor in 113 more, or 62 percent in all. For example, the 39-year-old Palisades reactor in Michigan shut Jan. 22 when an electrical cable failed, a fuse blew and a valve stuck shut, expelling steam with low levels of radioactive tritium into the outside air. And a 1-inch crack in a valve weld aborted a restart in February at the LaSalle site west of Chicago.
  • * A 2008 NRC report blamed 70 percent of potentially serious safety problems on "degraded conditions" such as cracked nozzles, loose paint, electrical problems or offline cooling components.* Confronted with worn parts, the industry has repeatedly requested -- and regulators often have allowed -- inspections and repairs to be delayed for months until scheduled refueling outages. Again and again, problems worsened before being fixed. Postponed inspections inside a steam generator at Indian Point allowed tubing to burst, leading to a radioactive release in 2000. Two years later, cracking grew so bad in nozzles on the reactor vessel at the Davis-Besse plant near Toledo, Ohio, that it came within two months of a possible breach, an NRC report said, which could release radiation. Yet inspections failed to catch the same problem on the replacement vessel head until more nozzles were found to be cracked last year.
  • Time crumbles thingsNuclear plants are fundamentally no more immune to aging than our cars or homes: Metals grow weak and rusty, concrete crumbles, paint peels, crud accumulates. Big components like 17-story-tall concrete containment buildings or 800-ton reactor vessels are all but impossible to replace. Smaller parts and systems can be swapped but still pose risks as a result of weak maintenance and lax regulation or hard-to-predict failures.Even mundane deterioration can carry harsh consequences.For example, peeling paint and debris can be swept toward pumps that circulate cooling water in a reactor accident. A properly functioning containment building is needed to create air pressure that helps clear those pumps. But a containment building could fail in a severe accident. Yet the NRC has allowed safety calculations that assume the buildings will hold.
  • In a 2009 letter, Mario V. Bonaca, then-chairman of the NRC's Advisory Committee on Reactor Safeguards, warned that this approach represents "a decrease in the safety margin" and makes a fuel-melting accident more likely.Many photos in NRC archives -- some released in response to AP requests under the federal Freedom of Information Act -- show rust accumulated in a thick crust or paint peeling in long sheets on untended equipment.Four areas stand out:
  • Brittle vessels: For years, operators have rearranged fuel rods to limit gradual radiation damage to the steel vessels protecting the core and keep them strong enough to meet safety standards.But even with last year's weakening of the safety margins, engineers and metal scientists say some plants may be forced to close over these concerns before their licenses run out -- unless, of course, new regulatory compromises are made.
  • Leaky valves: Operators have repeatedly violated leakage standards for valves designed to bottle up radioactive steam in an earthquake or other accident at boiling water reactors.Many plants have found they could not adhere to the general standard allowing main steam isolation valves to leak at a rate of no more than 11.5 cubic feet per hour. In 1999, the NRC decided to allow individual plants to seek amendments of up to 200 cubic feet per hour for all four steam valves combined.But plants have violated even those higher limits. For example, in 2007, Hatch Unit 2, in Baxley, Ga., reported combined leakage of 574 cubic feet per hour.
  • Cracked tubing: The industry has long known of cracking in steel alloy tubing used in the steam generators of pressurized water reactors. Ruptures have been common in these tubes containing radioactive coolant; in 1993 alone, there were seven. As many as 18 reactors still run on old generators.Problems can arise even in a newer metal alloy, according to a report of a 2008 industry-government workshop.
  • Corroded piping: Nuclear operators have failed to stop an epidemic of leaks in pipes and other underground equipment in damp settings. Nuclear sites have suffered more than 400 accidental radioactive leaks, the activist Union of Concerned Scientists reported in September.Plant operators have been drilling monitoring wells and patching buried piping and other equipment for several years to control an escalating outbreak.But there have been failures. Between 2000 and 2009, the annual number of leaks from underground piping shot up fivefold, according to an internal industry document.
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BP's Deception in the Gulf : Part 1- The farcical 3 leaks on the broken riser story [10... - 0 views

  • Of all the lies that came out of the Gulf disaster, the most preposterous has been the 3 leaks on the riser story. Figure 165-0a to 165-0c were the first few schematic illustrations of BP’s blowout incident. They were so embarrassingly stupid and logic defying, most experts believed the schematics were deliberately drawn by cartoonists to confuse the average Joe Public. The patchwork of realities resembled a makeshift car hastily assembled from parts of different size vehicles. Obviously a mini car body does not match the oversize truck tires. It is obvious the 5½ inch drill pipe at leak(3) cannot be the same 21inch diameter riser (actually a well casing) at leak(2). Yet the world's technical experts willfully overlooked this fundamental discrepancy and allowed the criminals to get away with murders. And America, the world's greatest nation shouting human rights abuses all over the world, allowed this hideous crime of mass destruction in its own backyard to go unpunished? In China, the corporate criminals responsible for this environmental carnage would have been executed instead of having their lives back. Can the 11 dead crewmen, their young families and thousands of Gulf victims who suffered numerous medical problems from the toxic contaminated Gulf waters and corexit sprayed on them, ever have their lives back?
  • Surely the world's most technologically advanced country could not have been so easily fooled by this “3 wells & 3 leaks on a single riser” fairy tale (concocted Beyond Phantasm). Besides the many controversial circumstances surrounding the sinking of the burning rig (DWH) and the sudden breaking of the super-strong riser in calm water, how could a third open-ended leak (3) be even possible beyond the completely severed riser at the second leak (2)? See fig165-0c. Leak(2) has to be the blown crater of well no.#3 as illustrated in many of our previous articles and irrefutably shown in Figure 165-5 with the right coordinates in the few undoctored videos.
  • “When you have eliminated the impossible, whatever remains, however improbable, must be the truth.” S Homes.
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  • ince June 2010, we have illustrated many physics of impossibilities concocted by BP. Two years later, it seems the world has not awaken from its ignorantly blissful slumber. This disaster is more than just a disastrous mega oil spill. If the world's foremost scientists and investigators cannot figure out the many fundamental flaws in the simple “3 leaks-3 wells” fairy tale, how can there be any hope of ever solving problems beyond kindergarten level? Forget the carbon tax, the ban on hazardous gas emission and just about any anti-pollution measures designed to improve the global environment. All these schemes have sinister undertones with profiting on mass miseries of others.
  • In the Gulf disaster, you have the biggest environmental polluter in human history. The punishment for a crime of mass destruction that could have been averted, was just a slap on the wrist? If this is not the clearest proof of corruption at the highest level and biggest HSE (health, safety & environment) farce, then what is?
  • It was not the failure of safety regulations but the enforcement of regulations. The government admitted this much by sacking MMS's director and changing it to BOEMRE. It was not the failure of technology but the devious use of technology to cloak unfair business practices or safety farce at the very least. But would shrewd corporate criminals risk billions of investment dollars just to skimp on some daily operation expenses and safety devices? Just like the fairy tale of the 3 leaks, this was just the red herring. The oil industry will start on its decline just as the coal industry did, after its replacement by alternative cheaper and cleaner energy sources (The Future of Free Energy).
  • Giant global oil corporations may not have the next 10 years to recover their mega billion dollar investments. With the writings on the wall and their failures to control (prevent) the advent of free energy, the oil oligarchs had to devise emergency exit schemes before oil independence becomes public knowledge. High crude oil prices cannot be manipulated too high or long enough to recoup their billions of investment dollars globally. They risk becoming economic dinosaurs.
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    Lengthy article with lots of visuals, only partially annotated so read the entire article at the site
Dan R.D.

Lessons Learned from Fukushima: part I - the Technical [24Jun11] - 0 views

  • 1)     Natural disasters
  • In the U.S. this is an ongoing effort. Every time something happens through the INPO reporting systems and the NRC assessments, the entire industry looks at each facility and assesses any lessons learned or changes that need to be made.However, it is clear that we need to remain vigilant against complacency while balancing cost vs. risk assessments of these potentials.
  • 2)   Long term Station Blackout (SBO)
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  • Generally two issues stand out. Either the possibility of common cause failure needs to be eliminated, or the facility needs to be able to manage for a longer period before regaining power. The inherent issue here is how long is long enough and the fact that batteries aren’t really a practical option for driving pump power.
  • 3)   Ultimate Heat Sink
  • The underlying issue of SBO is one of maintaining the ultimate heat sink during those early critical hours when the decay heat in the reactor is significant and can cause major fuel failure. Loss of the heat sink is the ultimate reason for the catastrophic failure of the fuel in core. Whether a solution separate from the SBO issues is required isn’t clear, but the issue is one to consider.
  • 4)   Spent Fuel Pools
  • The issues with the spent fuel pools are still evolving. Claims made internationally regarding the status of the pools in the early days of the event have been clearly proven false. However, at a minimum these pools represented a significant diversion of resources for TEPCO that could have been better spent elsewhere.
  • 5)    Hydrogen
  • aside: I’ve been told that many believe that hydrogen explosion to be like a hydrogen bomb. That is not the case. The explosion we’re talking about here is that of hydrogen and oxygen recombining rather violently to make water. It is the same mechanism that caused the explosion of the Challenger Shuttle in the 1980’s :end aside.
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Questions of Competence at Ft. Calhoun Plant [25sep11] - 0 views

  • The switch — one that's tripped when Fort Calhoun Nuclear Station needs to safely shut down its reactor — was making an unusual buzzing sound.Plant engineers looked into it, made some repairs and overall didn't think it was a big deal.Turns out they didn't understand the problem as well as they thought they did. During a later test, the switch malfunctioned.
  • The kind of thinking that led to the switch failure at the nuclear power plant 19 miles north of Omaha has now landed the plant in some hot water with federal regulators. More than a mechanical failing, it suggests a culture that's out of step with the assume-nothing, take-no-chances, stay-on-top-of-things approach that's demanded when working with a technology where multiple errors and failures can cascade into very, very bad results. The switch issue came on the heels of another regulatory write-up Fort Calhoun had received for having inadequate plans for dealing with extremely massive flooding — flooding even greater than the historic high water levels seen at the plant this summer.
  • Fort Calhoun is one of only two out of the nation's 104 nuclear reactors currently on the U.S. Nuclear Regulatory Commission's list of most-troubled plants, and one of only eight to land on it over the past decade.It's all caused a great deal of introspection within the plant's owner, the Omaha Public Power District. While the utility's top leaders say the plant remains a safe one, in hindsight they say the staff's safety focus had slipped."We had a slow, subtle decline,'' Gary Gates, OPPD's president and CEO, said in an interview during a plant visit last week. "This plant is used to running at a high level of performance. We're embarrassed to be in this situation. This is not how Fort Calhoun runs.
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  • Gates said he and OPPD are committed to making any changes necessary to restore the NRC's confidence, and he hasn't ruled out management changes. He believes the plant and its 700 workers will emerge in the end stronger and more focused.Despite the regulatory issues, the plant that typically provides almost one-sixth of the electricity powering lights, TVs and toasters in the Omaha area is preparing to resume operations later this fall after months in a flood-related shutdown mode.
  • The NRC, OPPD and nuclear power experts all say that the public has nothing to fear from Fort Calhoun's troubles or the restarting of its reactor. They say U.S. nuclear plants are engineered and scrutinized in ways intended to ensure they never reach the point of catastrophe.Take, for example, that recent switch failure. There are three identical switches that perform the same function at Fort Calhoun, a multiple redundancy built in just in case of such a problem, with two needing to work to shut down the reactor.And operators also have five different ways they can shut it down manually. They train on each method several times a year in a simulator that is identical to the plant's actual control room, right down to the shade of carpeting.
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Nuke plants' generator failures draw scrutiny [12Oct11] - 0 views

  • ATLANTA - Four generators that power emergency systems at nuclear plants have failed when needed since April, an unusual cluster that has attracted the attention of federal inspectors and could prompt the industry to re-examine its maintenance plans. None of these failures has threatened the public. But the diesel generators serve the crucial function of supplying electricity to cooling systems that prevent a nuclear plant's hot, radioactive fuel from overheating, melting and potentially releasing radiation into the environment. That worst-case scenario happened this year when the Fukushima Dai-ichi nuclear plant in Japan lost all backup power for its cooling systems after an earthquake and tsunami.
  • hree diesel generators failed after tornadoes ripped across Alabama and knocked out electric lines serving the Tennessee Valley Authority's Browns Ferry nuclear plant in April. Two failed because of mechanical problems and one was unavailable because of planned maintenance. Alabama nuclear plant cited for safety lapses Another generator failed at the North Anna plant in Virginia following an August earthquake. Generators have not worked when needed in at least a dozen other instances since 1997 because of mechanical failures or because they were offline for maintenance, according to an Associated Press review of reports compiled by the U.S. Nuclear Regulatory Commission.
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Worst Nuclear Disasters - Civilian [15Apr11] - 0 views

  • The top civilian nuclear disasters, ranked by International Nuclear and Radiological Event Scale. Worst Civilian Nuclear Disasters 1. Chernobyl, Soviet Union (now Ukraine) April 26, 1986 INES Rating: 7 (major impact on people and environment)
  • The worst nuclear disaster of all time resulted from a test of the reactor’s systems. A power surge while the safety systems were shut down resulted in the dreaded nuclear meltdown. Fuel elements ruptured and a violent explosion rocked the facility. Fuel rods meted and the graphite covering the reactor burned. Authorities reported that 56 have died as a direct result of the disaster—47 plant workers and nine children who died of thyroid disease. However, given the Soviet Union’s tendency to cover up unfavorable information, that number likely is low.  International Atomic Energy Agency reports estimate that the death toll may ultimately be as high as 4,000. The World Health Organization claims that it’s as high as 9,000. In addition to the deaths, 200,000 people had to be permanently relocated after the disaster. The area remains unsuitable for human habitation. 2. Fukushima, Japan March 11, 2011 INES Rating: 7 (major impact on people and environment) Following a 9.0 magnitude earthquake and tsunami, Japan’s Fukushima nuclear power facility suffered a series of ongoing equipment failures accompanied by the release of nuclear material into the air. The death toll for this currently is at two but is expected to rise and as of April 2011, the crisis still ongoing. A 12 mile evacuation area has been established around the plant.
  • 3. Kyshtym, Soviet Union Sept. 29, 1957 INES Rating: 6 (serious impact on people and environment) Poor construction is blamed for the September 1957 failure of this nuclear plant. Although there was no meltdown or nuclear explosion, a radioactive cloud escaped from the plant and spread for hundreds of miles. Soviet reports say that 10,000 people were evacuated, and 200 deaths were cause by cancer.
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  • 4. Winscale Fire, Great Britain Oct. 10, 1957 INES Rating: 5 (accident with wider consequences) The uranium core of Britain’s first nuclear facility had been on fire for two days before maintenance workers noticed the rising temperatures. By that time, a radioactive cloud had already spread across the UK and Europe. Plant operators delayed further efforts in fighting the fire, fearing that pouring water on it would cause an explosion. Instead, they tried cooling fan and carbon dioxide. Finally, they applied water and on Oct. 12, the fire was out. British officials, worried about the political ramifications of this incident, suppressed information. One report, however, says that in the long run, as many as 240 may have died from accident related cancers. 5.
  • Three Mile Island, Pennsylvania, US March 28, 1979 INES Rating: 5 (accident with wider consequences) Failure of a pressure valve resulted in an overheating of the plant’s core and the release of 13 million curies of radioactive gases. A full meltdown was avoided when the plant’s designers and operators were able to stabilize the situation before contaminated water reached the fuel rods. A full investigation by the US Nuclear Regulatory Commission suggests that there were no deaths or injuries resulting from the incident.
  • 6. Golania, Brazil Sept, 1987 INES Rating: 5 (accident with wider consequences) Scavengers at an abandoned radiotherapy institute found a billiard ball sized capsule of radioactive cesium chloride, opened it and then sold it to a junkyard dealer. The deadly material was not identified for more than two year, during which time it had been handled by hundreds, including some who used the glittery blue material for face paint. Of the 130,000 tested, 250 were discovered to be contaminated and 20 required treatment for radiation sickness. Four died, including the two who originally found the capsule, the wife of the junkyard owner and a small girl who used the powder as face paint. 7. Lucens, Switzerland January 1, 1969 INES Rating: 5 (accident with wider consequences) When the coolant on a test reactor facility in a cave in Switzerland failed during startup, the system suffered a partial core meltdown and contaminated the cavern with radioactivity. The facility was sealed and later decontaminated. No known deaths or injuries.
  • 8. Chalk River, Canada INES Rating: 5 (accident with wider consequences) May 24, 1958 Inadequate cooling lead to a fuel rod fire, contaminating the plant and surrounding labs. 9. Tokaimura,Japan Sept. 30, 1999 INES Rating: 4 (accident with local consequences) The nuclear plant near Tokai had not been used for three years when a group of unqualified workers attempted to put more highly enriched uranium in a precipitation tank than was permitted. A critical reaction occurred and two of the workers eventually died of radiation exposure. Fifty six plant workers and 21 others also received high doses of radiation. Residents within a thousand feet of the plant were evacuated.
  • 10. National Reactor Testing Station, Idaho Falls, Idaho January 3, 1961 INES Rating: 4 (accident with local consequences) Improper withdrawal of a control rod led to a steam explosion and partial meltdown at this Army facility. Three operators were killed in what is the only known US nuclear facility accident with casualties. In addition to these, there have been a number of deadly medical radiotherapy accidents, many of which killed more people than the more commonly feared nuclear plant accidents: 17 fatalities – Instituto Oncologico Nacional of Panama, August 2000 -March 2001. patients receiving treatment for prostate cancer and cancer of the cervix receive lethal doses of radiation.[7][8] 13 fatalities – Radiotherapy accident in Costa Rica, 1996. 114 patients received an overdose of radiation from a Cobalt-60 source that was being used for radiotherapy.[9]
  • 11 fatalities – Radiotherapy accident in Zaragoza, Spain, December 1990. Cancer patients receiving radiotherapy; 27 patients were injured.[10] 10 fatalities – Columbus radiotherapy accident, 1974–1976, 88 injuries from Cobalt-60 source. 7 fatalities – Houston radiotherapy accident, 1980.Alamos National Laboratory.[18] 1 fatality – Malfunction INES level 4 at RA2 in Buenos Aires, Argentina, operator Osvaldo Rogulich dies days later.
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Revealed: £2bn cost of failed Sellafield plant - 0 views

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    An internal report revealing the full extent of the failure of the SellafieldMixed-Oxide (MOX) plant concluded that the facility was "not fit for purpose" and its performance over a decade was "very poor". The report is embarrassing for the Government which is proposing to build a new MOX plant at Sellafield to deal with Britain's civil plutonium stockpile - the biggest in the world.
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Greg Palast » Fukushima: They Knew [10Nov11] - 0 views

  • Here was the handwritten log kept by a senior engineer at the nuclear power plant:
  • Wiesel was very upset. He seemed very nervous. Very agitated. . . . In fact, the plant was riddled with problems that, no way on earth, could stand an earth- quake. The team of engineers sent in to inspect found that most of these components could "completely and utterly fail" during an earthquake. "Utterly fail during an earthquake." And here in Japan was the quake and here is the utter failure. The warning was in what the investigations team called The Notebook, which I'm not supposed to have.  Good thing I've kept a copy anyway, because the file cabinets went down with my office building .... WORLD TRADE CENTER TOWER 1, FIFTY-SECOND FLOOR
  • [This is an excerpt in FreePress.org from Vultures' Picnic: In Pursuit of Petroleum Pigs, Power Pirates and High-Finance Fraudsters, to be released this Monday.  Click here to get the videos and the book.] Two senior nuclear plant engineers were spilling out their souls and files on our huge conference table, blowing away my government investigations team with the inside stuff about the construction of the Shoreham, New York, power station. The meeting was secret. Very secret. Their courage could destroy their careers: No engineering firm wants to hire a snitch, even one who has saved thousands of lives. They could lose their jobs; they could lose everything. They did. That’s what happens. Have a nice day.
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  • On March 12 this year, as I watched Fukushima melt, I knew:  the "SQ" had been faked.  Anderson Cooper said it would all be OK.  He'd flown to Japan, to suck up the radiation and official company bullshit.  The horror show was not the fault of Tokyo Electric, he said, because the plant was built to withstand only an 8.0 earthquake on the Richter scale, and this was 9.0.  Anderson must have been in the gym when they handed out the facts.  The 9.0 shake was in the middle of the Pacific Ocean, 90 miles away.  It was barely a tenth of that power at Fukushima. I was ready to vomit.  Because I knew who had designed the plant, who had built it and whom Tokyo Electric Power was having rebuild it:  Shaw Construction.  The latest alias of Stone & Webster, the designated builder for every one of the four new nuclear plants that the Obama Administration has approved for billions in federal studies.
  • But I had The Notebook, the diaries of the earthquake inspector for the company.  I'd squirreled it out sometime before the Trade Center went down.  I shouldn't have done that.  Too bad. All field engineers keep a diary. Gordon Dick, a supervisor, wasn’t sup- posed to show his to us. I asked him to show it to us and, reluctantly, he directed me to these notes about the “SQ” tests.
  • SQ is nuclear-speak for “Seismic Qualification.” A seismically qualified nuclear plant won’t melt down if you shake it. A “seismic event” can be an earthquake or a Christmas present from Al Qaeda. You can’t run a nuclear reactor in the USA or Europe or Japan without certified SQ. This much is clear from his notebook: This nuclear plant will melt down in an earthquake. The plant dismally failed to meet the Seismic I (shaking) standards required by U.S. and international rules.
  • From The Notebook: Wiesel was very upset. He seemed very nervous. Very agitated. [He said,] “I believe these are bad results and I believe it’s reportable,” and then he took the volume of federal regulations from the shelf and went to section 50.55(e), which describes reportable deficiencies at a nuclear plant and [they] read the section together, with Wiesel pointing to the appropriate paragraphs that federal law clearly required [them and the company] to report the Category II, Seismic I deficiencies. Wiesel then expressed his concern that he was afraid that if he [Wiesel] reported the deficiencies, he would be fired, but that if he didn’t report the deficiencies, he would be breaking a federal law. . . . The law is clear. It is a crime not to report a safety failure. I could imagine Wiesel standing there with that big, thick rule book in his hands, The Law. It must have been heavy. So was his paycheck. He weighed the choices: Break the law, possibly a jail-time crime, or keep his job.
  • I think we should all worry about Bob. The company he worked for, Stone & Webster Engineering, built or designed about a third of the nuclear plants in the United States.
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    "Completely and Utterly Fail in an Earthquake"The Fukushima story you didn't hear on CNN.Plant engineers knew it would fail in an earthquake.
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Regulator Approves Southern's Reactors as Chairman Dissents [10Feb12] - 0 views

  • The U.S. Nuclear Regulatory Commission approved Southern Co.’s (SO) application for the first licenses to build reactors in more than 30 years, with the chairman’s dissenting vote sparking new controversy over whether safety upgrades are needed after Japan’s 2011 disaster.
  • The split vote mars the start of a new atomic era as Southern builds the first U.S. nuclear reactor from a standardized design that promises to speed construction and reduce risks of runaway costs that plagued nuclear development during the 1970s and 1980s. “I simply cannot ignore what happened at Fukushima,” Chairman Gregory Jaczko said in a statement after the 4-1 vote today at NRC headquarters in Rockville, Maryland.
  • Jaczko said in an interview he couldn’t support the licenses without a binding agreement from Atlanta-based Southern and its partners that the new reactors would be able to handle a power failure, earthquake, flooding and other hazards that contributed to explosions and meltdowns at the stricken Japanese station. The licensing process “is a little bit like buying a house,” where home inspectors identify things that need to be fixed, Jaczko said. “Once you close on your house, which would be like issuing a license, you own those problems.”
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  • Southern Co. and industry officials said Jaczko’s concerns were appropriate for the old generation of reactors operated at Fukushima Dai-Ichi and in the U.S., but were overblown for the atomic generators under construction at Vogtle, about 26 miles (42 kilometers) southeast of Augusta, Georgia. “Greg Jaczko, I think, was making a statement that it is a new day and we’re clearly prioritizing safety,” said Michaele “Mikey” Brady Raap, a nuclear engineer and board member of the American Nuclear Society, an organization of nuclear engineers and scientists. “It was kind of a strange way to do it.”
  • Southern’s plans for Vogtle and the new reactors themselves were vetted by the commission over a five-and-a-half-year process, Thomas Fanning, Southern’s chairman and chief executive officer, said during an interview today.
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#Radioactive Compost Has Already Spread Wide [27Jul11] - 0 views

  • From the press release by Akita prefectural government on July 25:A resident in Akita Prefecture alerted the authorities when the bag of leaf compost that he purchased from a local garden/home center measured high in radiation with his portable survey meter. The authorities tested the content of the bag, and it had 11,000 becquerels/kg of cesium.
  • At the garden/home center (2 locations) the air radiation 1 meter from the pile of the leaf compost bags measured as high as 0.48 microsievert/hr.
  • The press release is somewhat misleading, as it says the air radiation 1 meter from one bag of the leaf compost is 0.06 microsievert/hr. If you measure in front of the pile of the same bags, the radiation is as high as 0.48 microsievert/hr. Akita's air radiation level (which the prefectural government measures only at 2 locations) is between 0.04 and 0.06 microsievert/hr.According to Yomiuri Shinbun (7/27/2011), these bags were packed in Tochigi Prefecture, and 20,000 bags have already been sold in Akita Prefecture alone.
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  • Shimotsuke Shinbun (local Tochigi paper; 7/27/2011) reports that Tochigi Prefecture tested the leaves that went into the leaf compost bags, and they found 72,000 becquerels/kg of radioactive cesium. The leaves were collected in the northern Tochigi in April, and was sold outside the prefecture from mid June to early July. The Tochigi prefectural government ordered the two sellers of leaf compost in Tochigi to recall what's been sold and refrain from shipping "voluntarily" (i.e. at the sellers' own cost, with no support from the government).Leaf composts are mainly used by the home gardeners. There may be many who hoped to grow their own, radiation-free vegetables and bought these bags to amend the soil for better growth of the seedlings. Well, that hope is dashed. The home gardeners may have ended up contaminating their own soil which may not have been contaminated before they put in the compost.
  • The Ministry of Agriculture, Forestry and Fisheries couldn't even figure out that cattle farmers feed their cows with rice hay. What the individual home gardeners use for their small gardens was probably none of their concern, as the Ministry is there for the producers.
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    By allowing contamination to spread to the entire island, if not the country, epidemiological studies of the impact on health in the medium and long-term will be made impossible, as there will be no "control" group with which to compare that has not been exposed. The risk, of course, is to the export economy as eventually export products will become contaminated also and international trade with Japan may suffer. Who is going to buy a Japanese car, if they think it is likely to glow in the dark (for example)? And radioactive electronics will show higher failure rates. - comment from reader
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