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Rising water, falling journalism | Bulletin of the Atomic Scientists [17Jun11] - 0 views

  • at the Fort Calhoun Nuclear Power Station near Blair, Nebraska, the river is already lapping at the Aqua Dams -- giant plastic tubes filled with water -- that form a stockade around the plant's buildings. The plant has become an island.
  • The Nuclear Regulatory Commission (NRC) issued a "yellow finding PDF" (indicating a safety significance somewhere between moderate and high) for the plant last October, after determining that the Omaha Public Power District (OPPD) "did not adequately prescribe steps to mitigate external flood conditions in the auxiliary building and intake structure" in the event of a worst-case Missouri River flood. The auxiliary building -- which surrounds the reactor building like a horseshoe flung around a stake -- is where the plant's spent-fuel pool and emergency generators are located.
  • OPPD has since taken corrective measures, including sealing potential floodwater-penetration points, installing emergency flood panels, and revising sandbagging procedures. It's extremely unlikely that this year's flood, no matter how historic, will turn into a worst-case scenario: That would happen only if an upstream dam were to instantaneously disintegrate. Nevertheless, in March of this year the NRC identified Fort Calhoun as one of three nuclear plants requiring the agency's highest level of oversight. In the meantime, the water continues to rise
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  • On June 7, there was a fire -- apparently unrelated to the flooding -- in an electrical switchgear room at Fort Calhoun. For about 90 minutes, the pool where spent fuel is stored had no power for cooling. OPPD reported that "offsite power remained available, as well as the emergency diesel generators if needed." But the incident was yet another reminder of the plant's potential vulnerability
  • And so, Fort Calhoun remains on emergency alert because of the flood -- which is expected to worsen by early next week. On June 9, the Army Corps of Engineers announced PDF that the Missouri River would crest at least two feet higher in Blair than previously anticipated
  • The Fort Calhoun plant has never experienced a flood like this before
  • this spring, heavy rains and high snowpack levels in Montana, northern Wyoming, and the western Dakotas have filled reservoirs to capacity, and unprecedented releases from the dams are now reaching Omaha and other cities in the Missouri River valley. Floodgates that haven't been opened in 50 years are spilling 150,000 cubic feet per second -- enough water to fill more than a hundred Olympic-size swimming pools in one minute. And Fort Calhoun isn't the only power plant affected by flooding on the Missouri: The much larger Cooper Nuclear Station in Brownville, Nebraska, sits below the Missouri's confluence with the Platte River -- which is also flooding. Workers at Cooper have constructed barriers and stockpiled fuel for the plant's three diesel generators while, like their colleagues at Fort Calhoun, they wait for the inevitable.
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    about the risk to the Ft. Calhoun Nuclear Plant due to Missouri River flooding and other nuclear facilities in the area
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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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Regulator signs off on threatened nuclear plant [27Jun11] - 0 views

  • A top regulator said on Sunday that a nuclear power plant threatened by flooding from the swollen Missouri River was operating safely and according to standards. "I got to see a lot of efforts they're taking to deal with flooding and the challenges that presents," Gregory Jaczko, the chairman of the federal Nuclear Regulatory Commission, said after touring the Cooper Nuclear Station near the village of Brownville and meeting with plant officials and executives.
  • Right now, we think they're taking an appropriate approach. This is a plant that is operating safely and meeting our standards," he added.The plant is located about 80 miles south of Omaha, where snow melt and heavy rains have forced the waters of the Missouri River over its banks, although they have not flooded the plant and receded slightly on Sunday.Jaczko said he was not doing an official plant inspection. He was briefed by NRC resident inspectors -- the agency staff who work on-site every day -- plant officials and executives, said Mark Becker, a spokesman at the Nebraska Public Power District, the agency that runs the plant.The power plant sat about 4 feet above the river's level on Sunday. The river had surged over its banks near the plant and filled in low-lying land near the Cooper plant.Water levels there are down after upstream levees failed, Becker said, relieving worries that water will rise around the Brownville plant as it has at another nuclear plant north of Omaha in Fort Calhoun.Art Zaremba, director of nuclear safety at Cooper, backed the assessment."The plant is very safe right now, and we've taken a lot of steps to make sure it stays that way," Zaremba said.
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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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NRC increases oversight at Fort Calhoun nuke plant [07Sep11] - 0 views

  • OMAHA, Neb. (AP) — A federal agency has ordered additional oversight for the Fort Calhoun nuclear power plant because of regulatory violations found last year at the site north of Omaha.Fort Calhoun will be subject to additional inspections and public meetings, and the Omaha Public Power District must submit a detailed improvement plan, according to a letter released Tuesday from the Nuclear Regulatory Commission.
  • The NRC and OPPD both said none of the problems identified at Fort Calhoun represented a public safety threat. Regulators say a key electrical part failed during a test and deficiencies in flood planning were found last year.OPPD officials promised improvement at Fort Calhoun, which sits about 20 miles north of Omaha on the west bank of the Missouri River."We take this situation very seriously," OPPD CEO Gary Gates said. "We will work to find ways to improve and we will seek assistance from other high performing power plants as well."
  • Besides the regulatory violations already on the books at the NRC, a small fire at Fort Calhoun briefly knocked out the cooling system for used fuel in June. Temperaturs at the plant never exceeded safe levels and power was quickly restored.That fire is still being investigated and the NRC has not determined the severity of the problem under its regulations.
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  • The violations found at Fort Calhoun are not related to this summer's flooding along the Missouri River.At the height of the flooding, the Missouri River rose about two feet above the elevation of the base of the plant. That forced OPPD to erect a network of barriers and set up an assortment of pumps to help protect its buildings. But the plant remained dry inside, and officials said Fort Calhoun could withstand flooding as much as seven or eight feet higher.
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Feds:Fort Calhoun Nuke plant among two worst [06Sep11] - 0 views

shared by D'coda Dcoda on 09 Sep 11 - No Cached
  • Federal regulators have downgraded the flood-idled nuclear power plant 20 miles north of Omaha, ranking it as one of the two poorest performing reactors in the United States.The U.S. Nuclear Regulatory Commission, in a letter to the Omaha Public Power District released Tuesday, faulted Fort Calhoun Nuclear Station for the performance of its safety systems — those needed to prevent potential problems from becoming potentially catastrophic.The U.S. has 104 licensed nuclear reactors, and Fort Calhoun is now in a category with one other plant that in laymen's terms could be considered a letter grade of “D.” No plants have an “F,” which requires a plant be shut down.
  • Fort Calhoun already was under heightened supervision as the Fukushima disaster unfolded in Japan because it was one of three reactors at the time being closely monitored by American regulators. This move is a step below where the OPPD plant was then.Officials with the utility say they realize they have issues to address.Gary Gates, president and chief executive officer, and David Bannister, chief nuclear officer, said they are committed to getting Fort Calhoun back to a higher grade and are confident in the utility's ability to do so.
  • Lara Uselding, spokeswoman for the NRC, said the downgrade is the result of two specific problems in safety systems at the plant.One had to do with a bad contact in an electrical system the NRC said OPPD failed to act aggressively enough to address. The other had to do with flood preparations before the current flooding. That discovery by federal regulators resulted in major improvements to the plant's flood protections before the Missouri River rose.
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  • The NRC noted in its letter that Fort Calhoun has been safely operated. Otherwise, based on the way the federal regulatory process works, it would have given OPPD the equivalent of an “F.”
  • Late last week, the NRC gave OPPD the green light to take steps toward resuming normal operations at the reactor. Uselding said that decision, a separate matter, put in writing the steps OPPD agreed to take before the plant can be brought back on line.
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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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Nuclear Stress tests take on Fukushima lessons [19Sep11] - 0 views

  • European regulators have been publishing progress reports on the program of stress tests being carried out at nuclear power plants in response to the Fukushima accident. In the weeks following the Fukushima accident, the European Council (EC) requested a review of safety at European nuclear power plants when faced by challenging situations. The criteria for the reviews, now known as stress tests, were produced for the European Commission by the European Nuclear Safety Regulatory Group (ENSREG). Progress reports were due to be submitted to the European Commission by 15 September, and many nuclear regulators and in some cases plant operators have published summaries, including regulators in Belgium, France, Hungary, Romania, Slovakia, Slovenia, Spain, Sweden and the UK.
  • The reports vary from country to country, but the take-home story emerging from the reports is that Europe's nuclear plants are generally well placed to withstand beyond-design-basis events. Some plants have already put into practice initial measures to improve safety in response to Fukushima, and the tests are bringing to light more measures that need to be taken to improve resilience on a plant-by-plant basis.   Some measures that have already been identified are simple to put into place: for example, housekeeping routines have been changed to reduce the potential for seismic interactions (where non-safety related equipment could impact or fall onto seismically qualified equipment) at UK power plants.
  • stress tests focus on three areas highlighted by events in Japan: external threats from earthquake and flooding, specifically tsunami; the consequences of loss of safety functions, that is, a total loss of electricity supply (also referred to as station black-out, or SBO), the loss of ultimate heat sink (UHS), or both; and issues connected with the management of severe accidents. The UHS is a medium to which the residual heat from the reactor is transferred, for example the sea or a river.
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  • While tsunami are not foreseen as a problem in Europe, the plants have been obliged to consider other external and internal initiating events that could trigger a loss of safety functions.In France, a total of 150 nuclear facilities including operating reactors, reactors under construction, research reactors and other nuclear facilities are affected. In its progress report, French regulator Autorité de Sûreté Nucléaire (ASN) notes that the risk of similar phenomena to those that triggered the Fukushima accident is negligible and says that it prefers to submit a more comprehensive report for all of its affected installations later in the year. However, reports for the 80 facilities identified as priorities have been submitted and those for the country's 58 operating power reactors have already been published on the ASN's web site.
  • No fundamental weaknesses in the definition of design basis events or the safety systems to withstand them has been revealed for UK nuclear power plants from either the stress tests or from earlier national reviews, according to the progress report from the UK's Office for Nuclear Regulation (ONR). However, lessons are being learnt about improving resilience for beyond-design-basis events and removing or reducing cliff-edges, and will be applied in a timely manner, the regulator says.
  • Measures under consideration in the UK include the provision of additional local flood protection to key equipment and the provision of further emergency back-up equipment to provide cooling and power, while EDF Energy, operator of the country's AGRs and single PWR plant, is preparing additional studies to reconsider flood modelling for specific sites and to review recent climate change information that arrived subsequent to recent routine ten-yearly safety reviews. The main focus for the country's Magnox reactors will be to improve the reliability of cooling systems in the face of a variety of beyond-design-basis faults to reduce or minimise the potential for cliff-edges. Evaluations of findings are still ongoing. Operators have up to 31 October to make their full report back to their national regulator, and regulators have until 31 December to make their full reports to the European Commission.
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Des Moines Register: "Nuclear plants need scrutiny, not hysteria" [02Jul11] - 0 views

  • this is a June 29 Des Moines Register editorial, telling readers "Don't be irrational, don't be hysterical, and don't you dare be anti-nuke". And don't listen to those "baseless rumors": Nuclear plants need scrutiny, not hysteria "Right now the plants are safe."That's what the chairman of the U.S. Nuclear Regulatory Commission said of the two nuclear power plants along the Missouri River in Nebraska after recent flooding. There have been no "nuclear releases." Vital systems to ensure safety are protected. Flood waters are not expected to become unmanageable
  • Gov. Terry Branstad said that state officials are monitoring the plants and that the public should not worry.Yet some people worry
  • A healthy dose of concern about nuclear energy is necessary to help keep this country's power plants are safe. The United States must remain dedicated to rigorous scrutiny of plant safety regulations and emergency measures
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  • This country has 104 nuclear power plants in 31 states, including Iowa. What's going on in Nebraska is a reminder of the need to ensure they are safe and there are plans in place to respond in the event of a natural or man-made disaster
  • They are also a reminder of the importance this country must place on protecting key areas -- including those with nuclear plants -- from flooding. While the U.S. must continue to focus on conservation and cultivating alternative sources of energy like wind, the reality is nuclear energy provides 20 percent of the nation's electricity. Along with coal, petroleum, natural gas and wind, it is an important part of this country's energy portfolio.
  • That portfolio must be more, not less, diverse. As the world has seen in Japan, a disrupted energy supply can lead to an economic crisis.Americans use a lot of energy. It has to come from somewhere, and providing it comes with risks. Yet we do not stop drilling for oil because there is an oil spill. We do not stop mining for coal because of a cave-in. We cannot allow fears about nuclear energy -- unfounded fears, as of now in Nebraska -- scare us away from this important power source
  • I particularly like the last three paragraphs
  • A disrupted energy supply in Japan is not because of nuclear power plant shutdowns, but because too many thermal and hydro power generating plants had been shut down. Rolling blackouts were intentional, to teach the Japanese the lesson - "nuclear power is necessary". Besides, an economic crisis is the last thing that ordinary people in Japan care about right now. (I don't know about the politicians and big power company execs.)
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Regulators up scrutiny of Fort Calhoun nuclear plant after finding more problems [17Dec11] - 0 views

  • Several new problems have been found at a Nebraska power plant that suffered flood damage earlier this year
  • tougher oversight for the Omaha Public Power District plant in Fort Calhoun will likely further delay its restart from early next year until sometime in the spring
  • The Nuclear Regulatory Commission said none of the new issues represents a public safety threat, but the growing number of problems, combined with the prolonged shutdown, requires more scrutiny.
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  • new problems at the plant include deficiencies in the Omaha Public Power District’s emergency response and either a design or installation flaw that contributed to a fire in June. Inspectors also found flaws in the way the utility’s analysis of how the plant would withstand different accident conditions such as earthquakes, tornadoes or loss of coolant.
  • The plant was already facing extra oversight because of the failure of a key electrical part during a test in 2010 and deficiencies in flood planning that were also found last year. Fort Calhoun might not be receiving so much attention if it hadn’t had the other recent regulatory problems.
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NRC Event at flooded Ft. Calhoun nuke plant: Both Fire Suppression Pumps are inoperable... - 0 views

  • Event Notification Report for July 25, 2011, U.S. Nuclear Regulatory Commission Operations Center:
  • Event Number: 47088Facility: FORT CALHOUNEvent Date: 07/22/2011Event Time: 08:30 [CDT]Emergency Class: NON EMERGENCY10 CFR Section: 50.72(b)(3)(ii)(B) – UNANALYZED CONDITION Event Text FIRE SUPRESSION PUMPS INOPERABLE “Both Fire Suppression Pumps are not operable because the required monthly surveillance tests will not be completed for June and July. The surveillance tests will be completed when flood waters recede to below 1004 feet MSL. The current river level is 1006.3 feet. Both fire pumps, FP-1A and FP-1B, are available and lined up for use. Other options are also available to provide a means of backup fire water supply that include: - Water Plant Pumps DW-8A and DW-8B aligned to the Fire Protection (FP) system.- Temporary connection to the fire protection water distribution system by the Fort Calhoun Fire Truck that is staged on site or any other fire pumper truck via fire hydrant FP-3G.- Admin Building/Training Center fire hydrant via fire hoses or water truck. This supply is from Blair water system and FP storage tank west of Highway 75.- Drafting from the Missouri River via temporary pumps.” The licensee notified the NRC Resident Inspector.
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Japan Radiation after the typhoon [22Sep11] - 0 views

  • After the typhoon hit Fukushima,massive scale of contamination is detected. It has been about 21.0 uSv/h around in Futabamachi all day long.
  • Even NHK reported that they detected double amount of cesium in the sea around reactor 3. http://www3.nhk.or.jp/news/html/20110921/k10015758171000.html (Though this article reports the radiation level of around reactor 3,it mentions only cesium amount around reactor 2.) Also,Tepco reported they found the water level was raised by about 44 cm in the basement floor of reactor 1.
  • http://headlines.yahoo.co.jp/hl?a=20110922-00000053-jij-soci However,in Onagawa nuc plant ,which is about 100km north to Fukushima plant, 2800 tons of water flowed in the the basement floor. Looking from this flooding in Onagawa nuc plant,it is natural to assume that the same or even worse scale of flooding happened to each reactor of Fukushima plant.
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  • This is as much as they detected in March,and there was no detection of cesium 137,so some people recognize it to be an error. http://savechild.net/archives/9208.html However,just like after the rain in March,yellow powder was found in North Kanto area,where Utsunomiya is.
  • http://headlines.yahoo.co.jp/hl?a=20110922-00000554-san-soci There are also a lot of the forum posts to report illness after touching the rain too.
  • “Good evening! I’m in Saitama.(North to Tokyo) I got soaked up in the rain twice yesterday,I couldn’t help it. I’ve been suffering from headache since last night.Today I feel sick slightly too. I feel fatigue in the evening recently.have unclear sight too. piles of hair get off from head as well. I’m concerned..” In Utsunomiya,where is south west to Fukushima,they measured 330 Mbq/km2 of cesium 134.
  • n March,the yellow powder phenomena was found everywhere after the rain too.(around 3/24) http://www.tostem-fc.jp/blog.php?post_cmd=kosin&post_blogdir=5000457&post_eid=153277
  • In March,Japanese government explained it was pollen or yellow sand from China,but strangely,nobody had ever seen it before though pollen and yellow sand fly every year. The yellow powder was found in Chernobyl too. It looks “like” cesium powder actually.
  •  
    Contains maps & charts
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NRDC Document Bank: NRDC's petitions to the NRC in response to the Near-Term Task Force... - 0 views

  • In July 2011 the NRDC Nuclear Program submitted to the Nuclear Regulatory Commission (NRC) twelve 10 CFR 2.206 petitions for immediate agency action and six 10 CFR 2.802 petitions for rulemaking that track the nuclear safety recommendations in the NRC Task Force's recently-released 90 day report on the lessons from the Fukushima Daiichi disaster. The 10 CFR 2.206 petitions ask the Commission to directly issue orders to nuclear power plant license holders on specific reactor safety upgrades. And the 10 CFR 2.802 rulemaking petitions request the NRC to commence a public process to alter specific rules that govern the nuclear industry's safety requirements. Prior to our petitions, the New York Times recently discussed the NRC's Near Term Task Force Review and also provided an explanation of the different processes that we have invoked. Here are brief descriptions of the specific petitions we filed.
  • 10 CFR 2.206 Petitions nuc_11081201a.pdf 2.1 Order licensees to reevaluate the seismic and flooding hazards at their sites against current NRC requirements and guidance, and if necessary, update the design basis and SSCs important to safety to protect against the updated hazards.[p.30] nuc_11081201b.pdf 2.3 Order licensees to perform seismic and flood protection walkdowns to identify and address plant-specific vulnerabilities and verify the adequacy of monitoring and maintenance for protection features such as watertight barriers and seals in the interim period until longer term actions are completed to update the design basis for external events. [p.30] nuc_11081201c.pdf 4.2 Order licensees to provide reasonable protection for equipment currently provided pursuant to 10 CFR 50.54(hh)(2) from the effects of design-basis external events and to add equipment as needed to address multiunit events while other requirements are being revised and implemented.[p.39]
  • nuc_11081201i.pdf 8.1 Order licensees to modify the EOP technical guidelines (required by Supplement 1, “Requirements for Emergency Response Capability,” to NUREG-0737, issued January 1983 (GL 82-33), to (1) include EOPs, SAMGs, and EDMGs in an integrated manner, (2) specify clear command and control strategies for their implementation, and (3) stipulate appropriate qualification and training for those who make decisions during emergencies.[p. 49] nuc_11081201j.pdf 8.3 Order licensees to modify each plant’s technical specifications to conform to the above changes.[p.50]
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  • nuc_11081201k.pdf 9.3 Order licensees to do the following until rulemaking is complete:Determine and implement the required staff to fill all necessary positions for responding to a multiunit event. Add guidance to the emergency plan that documents how to perform a multiunit dose assessment (including releases from spent fuel pools) using the licensee's site-specific dose assessment software and approach.Conduct periodic training and exercises for multiunit and prolonged SBO scenarios. Practice (simulate) the identification and acquisition of offsite resources, to the extent possible.Ensure that EP equipment and facilities are sufficient for dealing with multiunit and prolonged SBO scenarios. Provide a means to power communications equipment needed to communicate onsite (e.g., radios for response teams and between facilities) and offsite (e.g., cellular telephones, satellite telephones) during a prolonged SBO.Maintain ERDS capability throughout the accident.[p.57]
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Plugging leaks will end crisis, not cold shutdown: analysts [12Sep11] - 0 views

  • Ever since the nuclear crisis erupted six months ago, the public has been clamoring to know when the damaged reactors at the Fu ku shi ma No. 1 power plant will be brought under control and when the nightmare will end. The government and Tokyo Electric Power Co., which runs the crippled plant, are working to bring the three reactors into cold shutdown by mid-January.
  • Cold shutdown means the temperature at the bottom of the pressure vessel, which holds the core, has been lowered to less than 100 degrees. This critical milestone, known as "Step 2" in Tepco's road map for containing the crisis, would limit the release of radioactive materials from the plant to less than 1 millisievert per year, a level that poses no health risks.
  • Since work at the plant is proceeding relatively smoothly, it appears likely the mid-January target will be met. But Fukushima No. 1 will still have a long way to go before the flooded plant's reactors are stable enough to be considered safe, experts warn. The main reason is the abundance of highly radioactive water.
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  • "There are about 110,00 tons of contaminated water (in the plant) and the situation is still not completely under control because coolant water is leaking from the containment vessels. There is no guarantee that the irradiated water won't leak from the plant (and contaminate the environment)" if another natural disaster strikes, said Hisashi Ninokata, a professor of reactor engineering at the Tokyo Institute of Technology.
  • After achieving cold shutdowns of reactors 1, 2 and 3, the government may declare parts of the 20-km no-go zone around the plant safe. It may even let the evacuees return, as long as the area is decontaminated and crucial infrastructure restored.
  • But the longer the tainted water leaks, the more the radioactive waste will grow, leaving the Fukushima plant vulnerable to further disasters, Ninokata said. Before the Fukushima crisis can be said contained, the holes and cracks from which the water and fuel are escaping must be located and sealed. But this extremely difficult task could take years because the radiation near the reactors is simply too high to let workers get near them.
  • "It'll be too early to say that the situation has reached a stable phase even after Step 2 is completed," said Chihiro Kamisawa, a researcher at Citizens' Nuclear Information Center, a nonprofit group of scientists and activists opposed to nuclear power. When a reactor is in cold shutdown, the water cooling its fuel is still hot but no longer boiling, which significantly reduces the amount of radioactive emissions.
  • In late July, the temperature in reactor No. 1's pressure vessel fell below 100 degrees. On Monday, the same thing was achieved in reactor 3 after Tepco activated a system that pumps water deep into the containment vessel. But on Friday, reactor No. 2 was still boiling away with a reading of 112.6. "Efforts seem to be making smooth progress, and I think Step 2 is likely to be achieved by mid-January," said Shinichi Morooka, a Waseda University professor and reactor expert.
  • Another reason for optimism is the progress being made with the water decontamination system. The cleaning rate has greatly improved in the past few weeks and exceeded 90 percent of capacity last week. If the decontamination system ever reaches its full potential, it will allow Tepco to inject coolant at a higher rate and bring the melted cores to lower and stabler temperatures.
  • The government also plans to start decontaminating soil in various hot spots so the evacuees can return once the second step is completed. But some experts are questioning whether residents should be allowed to return so soon. The cracks and holes in the leaking reactors haven't even been pinpointed yet, let alone fixed, they say.
  • "As an engineer, I am worried (about the plan to let residents return) when it is still unclear what is really going on inside the reactors," said Morooka. For the time being, Tepco can only guess where the water is leaking from and which parts need repair, because radiation has prevented workers from fully exploring the buildings.
  • Spokesman Junichi Matsumoto said that since no extensive damage to the reactors was found during inspections of the first and second floors of the buildings, any holes or cracks are probably at the basement level. But with the basement floors flooded, Tepco's top priority is just to get the water out. Plans to fix the reactors aren't even being discussed yet, Matsumoto said.
  • Asked if the containment vessels can take another quake, the Tokyo Institute of Technology's Ninokata said he believes the impact would likely be distributed evenly through the structure without widening existing cracks or holes. But if the impact somehow focuses on parts damaged by the March 11 disasters, there could be further damage, he said. "The containment vessel is what really ensures the safety of a nuclear reactor," Ninokata said, warning that if radioactive materials are still leaking out, allowing residents to return would risk harming their health.
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Atomic Energy: Unsafe in the Real World [30Jun11] - 0 views

  • In We Almost Lost Detroit, Hocevar described the blind faith of scientists in atomic energy and their wrong assumptions
  • he wrote in his foreword to the book We Almost Lost Detroit.
  • Nuclear power requires “perfection” and “no acts of God,” we were warned years ago. This has been brought home by the ongoing disaster caused by the earthquake and tsunami that struck the Fukushimi Daiichi nuclear plant complex, the flooding along the Missouri River in Nebraska now threatening two nuclear plants, and the wildfire laying siege to Los Alamos National Laboratory, the birthplace of atomic energy
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  • Nuclear power is an unforgiving technology. It allows no room for error,” wrote Carl J. Hocevar of the Union of Concerned Scientists in 1975. Hocevar had earlier been an engineer working on reactor safety at Idaho National Engineering Laboratory. “Perfection must be achieved if accidents that affect the general public are to be prevented
  • Earthquakes, tsunamis, floods, fire -- these and other disasters will inevitably occur. Add nuclear power with its potential to release massive amounts of deadly radioactive poisons when impacted by such a disaster, and it is clear that atomic energy is incompatible with the real world.
  • Nobel Prize-winning physicist Dr. Hannes Alfven explained in 1972 in declaring his strong opposition to nuclear power: “Fission energy is safe only if a number of critical devices work as they should, if a number of people in key positions follow all their instructions, if there is no sabotage, no hijacking of the transports, if no reactor processing plant or reprocessing plant or repository anywhere in the world is situated in a region of riots or guerilla activity, and no revolution or war -- even a ‘conventional one’ -- takes place in those regions. The enormous quantities of extremely dangerous material must not get into the hands of ignorant people or desperados. No acts of God can be permitted.” Dr. Alfven was writing in the Bulletin of the Atomic Scientists
  • Wei Zhaofeng, an energy official in China, which is now reconsidering its plans for nuclear power because of the Fukushima catastrophe, said recently: “We have to ensure 100 percent safety of these nuclear power plants
  • As physicist Amory Lovins, chairman and chief scientist at the Rocky Mountain Institute, recently wrote: “Nuclear power is uniquely unforgiving.” It’s “the only energy source where mishap or malice can kill so many people so far away
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    Diigo didn't highlight this properly (skipped text) but it still makes sense
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US Orders News Blackout Over Crippled Nebraska Nuclear Plant [17Jun11] - 0 views

  • A shocking report prepared by Russia’s Federal Atomic Energy Agency (FAAE) on information provided to them by the International Atomic Energy Agency (IAEA) states that the Obama regime has ordered a “total and complete” news blackout relating to any information regarding the near catastrophic meltdown of the Fort Calhoun Nuclear Power Plant [photo top left] located in Nebraska. According to this report, the Fort Calhoun Nuclear Plant suffered a “catastrophic loss of cooling” to one of its idle spent fuel rod pools on 7 June after this plant was deluged with water caused by the historic flooding of the Missouri River which resulted in a fire causing the Federal Aviation Agency (FAA) to issue a “no-fly ban” over the area.
  • Though this report confirms independent readings in the United States of “negligible release of nuclear gasses” related to this accident it warns that by the Obama regimes censoring of this event for “political purposes” it risks a “serious blowback” from the American public should they gain knowledge of this being hidden from them. Interesting to note about this event was the Nuclear Regulatory Commission (NRC) Chief, Gregory B. Jaczko, blasting the Obama regime just days before the near meltdown of the Fort Calhoun Nuclear Power Plant by declaring that “the policy of not enforcing most fire code violations at dozens of nuclear plants is “unacceptable” and has tied the hands of NRC inspectors.”
  • This report further notes that the “cover-up” of this nuclear disaster by President Obama is being based on his “fantasy” of creating so-called green jobs which he (strangely) includes nuclear power into as his efforts to bankrupt the US coal industry proceed at a record breaking pace.
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Scientists Radically Raise Estimates of Fukushima Fallout [25Oct11] - 0 views

  • The disaster at the Fukushima Daiichi nuclear plant in March released far more radiation than the Japanese government has claimed. So concludes a study1 that combines radioactivity data from across the globe to estimate the scale and fate of emissions from the shattered plant. The study also suggests that, contrary to government claims, pools used to store spent nuclear fuel played a significant part in the release of the long-lived environmental contaminant caesium-137, which could have been prevented by prompt action. The analysis has been posted online for open peer review by the journal Atmospheric Chemistry and Physics.
  • Andreas Stohl, an atmospheric scientist with the Norwegian Institute for Air Research in Kjeller, who led the research, believes that the analysis is the most comprehensive effort yet to understand how much radiation was released from Fukushima Daiichi. "It's a very valuable contribution," says Lars-Erik De Geer, an atmospheric modeller with the Swedish Defense Research Agency in Stockholm, who was not involved with the study. The reconstruction relies on data from dozens of radiation monitoring stations in Japan and around the world. Many are part of a global network to watch for tests of nuclear weapons that is run by the Comprehensive Nuclear-Test-Ban Treaty Organization in Vienna. The scientists added data from independent stations in Canada, Japan and Europe, and then combined those with large European and American caches of global meteorological data.
  • Stohl cautions that the resulting model is far from perfect. Measurements were scarce in the immediate aftermath of the Fukushima accident, and some monitoring posts were too contaminated by radioactivity to provide reliable data. More importantly, exactly what happened inside the reactors — a crucial part of understanding what they emitted — remains a mystery that may never be solved. "If you look at the estimates for Chernobyl, you still have a large uncertainty 25 years later," says Stohl. Nevertheless, the study provides a sweeping view of the accident. "They really took a global view and used all the data available," says De Geer.
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  • Challenging numbers Japanese investigators had already developed a detailed timeline of events following the 11 March earthquake that precipitated the disaster. Hours after the quake rocked the six reactors at Fukushima Daiichi, the tsunami arrived, knocking out crucial diesel back-up generators designed to cool the reactors in an emergency. Within days, the three reactors operating at the time of the accident overheated and released hydrogen gas, leading to massive explosions. Radioactive fuel recently removed from a fourth reactor was being held in a storage pool at the time of the quake, and on 14 March the pool overheated, possibly sparking fires in the building over the next few days.
  • But accounting for the radiation that came from the plants has proved much harder than reconstructing this chain of events. The latest report from the Japanese government, published in June, says that the plant released 1.5 × 1016 bequerels of caesium-137, an isotope with a 30-year half-life that is responsible for most of the long-term contamination from the plant2. A far larger amount of xenon-133, 1.1 × 1019 Bq, was released, according to official government estimates.
  • Stohl believes that the discrepancy between the team's results and those of the Japanese government can be partly explained by the larger data set used. Japanese estimates rely primarily on data from monitoring posts inside Japan3, which never recorded the large quantities of radioactivity that blew out over the Pacific Ocean, and eventually reached North America and Europe. "Taking account of the radiation that has drifted out to the Pacific is essential for getting a real picture of the size and character of the accident," says Tomoya Yamauchi, a radiation physicist at Kobe University who has been measuring radioisotope contamination in soil around Fukushima. Click for full imageStohl adds that he is sympathetic to the Japanese teams responsible for the official estimate. "They wanted to get something out quickly," he says. The differences between the two studies may seem large, notes Yukio Hayakawa, a volcanologist at Gunma University who has also modelled the accident, but uncertainties in the models mean that the estimates are actually quite similar.
  • The new study challenges those numbers. On the basis of its reconstructions, the team claims that the accident released around 1.7 × 1019 Bq of xenon-133, greater than the estimated total radioactive release of 1.4 × 1019 Bq from Chernobyl. The fact that three reactors exploded in the Fukushima accident accounts for the huge xenon tally, says De Geer. Xenon-133 does not pose serious health risks because it is not absorbed by the body or the environment. Caesium-137 fallout, however, is a much greater concern because it will linger in the environment for decades. The new model shows that Fukushima released 3.5 × 1016 Bq caesium-137, roughly twice the official government figure, and half the release from Chernobyl. The higher number is obviously worrying, says De Geer, although ongoing ground surveys are the only way to truly establish the public-health risk.
  • The new analysis also claims that the spent fuel being stored in the unit 4 pool emitted copious quantities of caesium-137. Japanese officials have maintained that virtually no radioactivity leaked from the pool. Yet Stohl's model clearly shows that dousing the pool with water caused the plant's caesium-137 emissions to drop markedly (see 'Radiation crisis'). The finding implies that much of the fallout could have been prevented by flooding the pool earlier. The Japanese authorities continue to maintain that the spent fuel was not a significant source of contamination, because the pool itself did not seem to suffer major damage. "I think the release from unit 4 is not important," says Masamichi Chino, a scientist with the Japanese Atomic Energy Authority in Ibaraki, who helped to develop the Japanese official estimate. But De Geer says the new analysis implicating the fuel pool "looks convincing".
  • The latest analysis also presents evidence that xenon-133 began to vent from Fukushima Daiichi immediately after the quake, and before the tsunami swamped the area. This implies that even without the devastating flood, the earthquake alone was sufficient to cause damage at the plant.

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    The Japanese government's report has already acknowledged that the shaking at Fukushima Daiichi exceeded the plant's design specifications. Anti-nuclear activists have long been concerned that the government has failed to adequately address geological hazards when licensing nuclear plants (see Nature 448, 392–393; 2007), and the whiff of xenon could prompt a major rethink of reactor safety assessments, says Yamauchi.

  • The model also shows that the accident could easily have had a much more devastating impact on the people of Tokyo. In the first days after the accident the wind was blowing out to sea, but on the afternoon of 14 March it turned back towards shore, bringing clouds of radioactive caesium-137 over a huge swathe of the country (see 'Radioisotope reconstruction'). Where precipitation fell, along the country's central mountain ranges and to the northwest of the plant, higher levels of radioactivity were later recorded in the soil; thankfully, the capital and other densely populated areas had dry weather. "There was a period when quite a high concentration went over Tokyo, but it didn't rain," says Stohl. "It could have been much worse." 
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US Radiation Monitoring May Have Been Handed Off To Nuclear Industry [04Nov11] Lobbyist... - 0 views

  • Lucas W Hixson may have uncovered a major abuse of the public trust by the NRC. In late March 2011 the NRC issued a directive that allowed the nuclear industry lobbyist group NEI to supply radiation monitoring data to the NRC who would then forward it to the EPA. March 24th the NRC discussed handing over radiation monitoring to nuclear industry lobbyists, April 14th RadNet was shut down and went back to routine monitoring schedules. This meant no ongoing food,water and air filter testing. Only the radiation level monitors were left operating. The EPA claimed that levels were going down as the reason for shutting down the expanded monitoring, but places like Idaho did not have the decreases seen at other sites.
  • The NRC directive put commercial nuclear power plant owners in charge of voluntarily providing the public with radiation monitoring data but it would be run through their nuclear industry lobbyists before it would then be provided to the NRC. Raw data was not provided directly to the NRC. Considering the massive US nuclear industry offensive to flood the media with propaganda downplaying the Fukushima nuclear disaster, they are hardly a reliable source to tell the public what the radiation levels are.
  • RadNet itself had many problems, stations didn’t work, some were not calibrated before the disaster. Even more disturbing is that the EPA does not even handle their own radiation monitoring network. The important function falls to a former Bush administration appointee running a business out of a rundown storefront in New Mexico. Under a $238,000 no bid contract Environmental Dimensions supposedly manages, maintains and operates RadNet, the only tool the public has to see if we are being subjected to nuclear fallout. The blogger that broke this story states that Environmental Dimensions has tripled their revenue in recent years. The company cites a different address as their mailing address. This shows up as a tiny house in Albuquerque. EDI was also part of a 12 million dollar contract in 2010 along with a couple of other contractors. The contract provides environmental & remediation services to the US Corps of Engineers. EDI claims to have been in business since 1990 but owner, Ms. Bradshaw worked for the DoD in 2006.
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  • What little system the public has for radiation notification through the EPA has been shuffled off to a no bid contract with spurious origins and the system experienced widespread problems when it was needed most. That system was mostly turned off just over a month after the disaster. The NRC, the agency tasked with protecting the public from nuclear disasters decided to hand everything over to the nuclear industry’s lobbyists.
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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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