“NuScale Power, LLC, Design-Specific Review Standard and Safety Review Matrix“Docket Folder Summaryhttp://www.regulations.gov/#!docketDetail;D=NRC-2015-0160 (If you don’t like the questions answer a different question, as per the advice that an MIT Ph.D. gave their grad student, and MIT is big on nuclear, the head of the US DOE, Moniz, teaches there, so it should be ok for this!)
NuScale in 2003 when it belonged to the US Gov and was called “MULTI-APPLICATION, SMALL, LIGHT WATER REACTOR (MASLWR)” INEEL/EXT-04-01626
Greenpeace’s Justin McKeating made an excellent analysis of NuScale last year (see below our commentary).
However, he overlooked that the US DOE actually invented NuScale under the name of MASLWR. So, this is at least a second round of government funding. The US government dropped MASLWR and former DOE workers picked it up, probably after the patent expired, dubbing it NuScale. And, they are still feeding off the taxpayer pork barrel dole. Plus, it’s NuScale Not! The nuclear industry only knows how to recycle the same old stuff.
There doesn’t appear to be much, if anything, new about NuScale. The only known immediate nuclear deaths from a nuclear accident, in the US, were from a mini-SL-1 reactor that made nuclear fallout in rural Idaho.  In 1968, in Lucens Switzerland, there was a mini-underground nuclear reactor, which had a major accident. Although smaller than NuScale, 100 Rem (1 Sievert; 1000 mSv) was measured in the reactor cavern, and it is ranked as a major nuclear accident. Radiation was measured in the nearby village; it continues to leak radiation from the cavern. From the beginning the Lucens Reactor was plagued by leaks in the underground cavern and corrosion issues due to its underground location.  NuScale too will suffer from additional corrosion and extra problems of hydrogen attack because it is part underground and stuck in water on all sides. Underground nuclear isn’t a magic fix, on the contrary.
NuScale is apparently not really passive either “Conduction through the vessel wall is by itself not a sufficient mechanism for heat removal in the present design. A circulation path is required to effectively remove the core decay heat. The sump makeup system is required.”  Furthermore, Italian researchers found that if if “SUMP valves are not operated and the ADS vent valves stuck open“, then there was a six hour “grace” period before CHF [Critical Heat Flux] “conditions are reached at top of the core. The dryout cannot be quenched. Primary system coolant released thorugh the HTC top valve outside the contaiment” . Six hour grace period to meltdown-nuclear accident. So, these are neither passive, nor perfectly safe. And, they are proposing putting them in large groups, which makes one wonder what’s the point. A quick look online shows that NuScale has just submitted a laundry list of patents (July 2015) which, looking at the list alone, sound less original, than trying to patent a chicken sandwich, as someone recently did.
“When it comes to nuclear power, small isn’t beautiful. Or safe or cheap.
Blogpost by Justin McKeating – June 19, 2014 at 11:55
Not beautiful, safe or cheap: a message to the United States, where the Obama administration has pledged to waste money financing the Small Modular Reactor (SMR).
SMRs are supposed to be small and prefab – constructed from parts made in a central location and slapped together onsite like a cheap prefab home. Those parts can then be shipped out and built by staff who don’t necessarily have the skills to build larger, more complex reactors.
The trouble is, this is merely old nuclear technology in new clothes. So why is the US Department of Energy (DoE) is giving $217 million dollars over five years to NuScale, a SMR manufacturer.
Let’s note, with a weary shake of the head, that this is yet another public subsidy for the failing economics of nuclear power, and take a look why this is a bad investment of taxpayer dollars by the Obama administration.
Dr. Mark Cooper, senior fellow for economic analysis at the Institute for Energy and the Environment at Vermont Law School, has published a paper titled, The Economic Failure of Nuclear Power and the Development of a Low-Carbon Electricity Future: Why Small Modular Reactors Are Part of the Problem, Not the Solution.
In his paper, Dr. Cooper finds SMRs won’t be cheaper and, more worryingly, manufacturers and supporters of the technology want to short-circuit safety regulations to get them built.
With the Fukushima disaster in its fourth year and no real solution to the ongoing problems and massive contamination in the foreseeable future, maybe now is not the time to talk about reducing nuclear safety, particularly with experimental, untested technology.
Dr Cooper adds SMRs will be more expensive than traditional nuclear technologies and that up to $90 billion dollars will be needed to make SMRs commercially viable. That’s a huge sum that will drag financing away from renewable power projects that are vital in the fight against climate change.
We’ve been here before: the story of the nuclear industry wasting billions is an old one…….. https://miningawareness.wordpress.com/2015/08/30/when-it-comes-to-nuclear-power-small-isnt-beautiful-nor-safe-nor-cheap-nor-even-new-usnrc-nuscale-comment-deadline-monday-night-31-august-one-minute-to-midnight-ny-dc-time/
nuClear news No.77, September 20156. Plutonium Conundrum A US Energy Department-commissioned study, which has been leaked to the Union of Concerned Scientists, concludes that it would be cheaper and far less risky to dispose of 34 metric tons of U.S. surplus plutonium at a federal nuclear waste repository in New Mexico than convert it into mixed-oxide (MOX) fuel for commercial nuclear power plants at the MOX Fuel Fabrication Facility in South Carolina.
The unreleased report describes in detail the delays and massive cost overruns at the half-built MOX facility, located at the federal Savannah River Site. High staff turnover, the need to replace improperly installed equipment, and an antagonistic relationship between the local federal project director and the contractor are only some of the factors undermining the project. The new report also notes that there are “no obvious silver bullets” to reduce the life-cycle cost of the MOX approach.
According to UCS, a better alternative to turning the surplus plutonium into commercial nuclear fuel would be to “downblend” it, a method the Energy Department has already used to dispose of several metric tons of plutonium. It involves diluting the plutonium with an inert, nonradioactive material and then sending it to the nuclear waste site in New Mexico, the Waste Isolation Pilot Plant (WIPP), for burial. The new report’s analysis supports that assessment. …….
Concerns over reliability, safety, chemistry of planned Advanced Boiling Water Nuclear Reactors (ABWR)
New nuclear fuel bank a welcome development, Japan Times, 25 Aug 15 BY GARETH EVANS “………(on Aug. 27), Kazakhstan is establishing a major new international fuel bank, which it will operate on behalf of the IAEA. The new facility should once and for all remove the main excuse that has been advanced, sincerely or not, for building and maintaining homegrown enrichment capability.
Scheduled to commence operations in 2017, the Kazakh fuel bank will store up to 90 tons of LEU, sufficient to refuel three typical power-producing light water reactors. While Kazakhstan will physically operate the bank, the uranium will be owned and controlled by the IAEA, and made available to non-nuclear-weapon states if, for any reason, they cannot secure the LEU they need from the commercial market.
Provided the state in question is in compliance with its comprehensive non-proliferation safeguards agreement with the IAEA, it can draw the required fuel from the bank and transfer it to a fuel fabricator to make fuel assemblies for the reactors involved…….
The bank has been funded by voluntary contributions, including $50 million from the Nuclear Threat Initiative, a U.S.-based NGO, $49 million from the U.S. government, up to $25 million from the European Union, $10 million each from Kuwait and the United Arab Emirates, and $5 million from Norway…… http://www.japantimes.co.jp/opinion/2015/08/25/commentary/world-commentary/new-nuclear-fuel-bank-a-welcome-development/#.VdzQBSWqpHx
Fitch: ‘Failure’ of new nuke construction means fewer plants https://www.snl.com/InteractiveX/Article.aspx?cdid=A-33617164-10551 , Thursday, August 20, 2015 By Matthew Bandyk The troubled construction of new nuclear reactors in Georgia and South Carolina will likely chill the pursuit of more nuclear plants in the U.S., although recent actions by the U.S. EPA and the Department of Energy could improve the outlook over time, according to an analysis by Fitch Ratings.
As a result, there will be less new nuclear to replace the increasing number of retiring plants. Fitch said that the U.S. Energy Information Administration’s forecast of nuclear generation falling by 10,800 MW by 2020 might be too conservative if more plants retire due to local political pressure and the need for costly upgrades.
The nuclear projects at the Vogtle and V.C. Summer plants, the first new nuclear generation built in the U.S. in decades, use the Westinghouse Electric Co. LLC AP1000 reactor design, which promised to be cheaper and more efficient to build than past nuclear plants that saw spiraling cost overruns during construction. In particular, Westinghouse touted the “modern, modular” construction technique in which major plant components would be built off-site as modules, allowing pieces of the project to be completed in parallel and in turn speeding up construction.
But “the recent failure of modular construction to deliver lower prices and shorter timelines will likely keep a cap on U.S. nuclear development into the midterm,” Fitch analysts said in a statement Aug. 20. The Vogtle and Summer projects are each running about three years behind schedule and are now expected to cost a few billion dollars more than originally estimated.
The blame for much of the delays has been centered on subpar work on the modules at facilities like Chicago Bridge & Iron Co. N.V.‘s Lake Charles fabrication facility in Louisiana. CB&I has since shifted work to other facilities, and monitors of the Vogtle project recently reported that the module work has “improved significantly.” But the contractors continue to miss their own deadlines and there is still risk of more delays, the same monitors said.
In addition, four AP1000 reactors under construction in China are also seeing rising costs and delays, Fitch noted.
One of the best hopes for the U.S. nuclear industry comes from the EPA’s recently finalized Clean Power Plan, according to Fitch. The rule allows new nuclear plants and capacity uprates at existing plants to generate credits that states can use to reduce their CO2 emissions levels and comply with the rule. In addition, the DOE continues to try to lower the financing costs for the nuclear industry through loan guarantees. Last year the DOE said it is accepting applications from nuclear developers for $12.5 billion in loan guarantees.
Both the EPA and DOE efforts could “yield growth factors longer term,” Fitch said.
Disposal beats MOX in US comparison http://www.world-nuclear-news.org/WR-Disposal-beats-MOX-in-US-comparison-2108151.html?utm_source=dlvr.it&utm_medium=twitter 21 August 2015
America is reconsidering how it will dispose of 34 tonnes of plutonium as the previous plan involving a MOX plant has been said to be twice as costly as a dilution and disposal option in a leaked Department of Energy (DOE) report.
The plutonium arises from a June 2000 nuclear weapons reduction agreement with Russia under which both countries would put 34 tonnes of plutonium beyond military use. Russia opted to use its plutonium as fuel for fast reactors generating power at Beloyarsk.
The USA, meanwhile, decided to build a mixed-oxide (MOX) nuclear fuel plant at Savannah River, where the plutonium would be mixed with uranium and made into fuel for light-water reactors. The design is similar to Areva’s Melox facility at Marcoule, but modified to handle metal plutonium ‘pits’ from US weapons and their conversion from metal to plutonium oxide. It is this part of the process that has been problematic. Construction started in 2007 with an estimated cost of $4.9 billion but work ran into serious trouble before being ‘zeroed’ in the DOE’s 2014 budget, putting development on ice.
The Union of Concerned Scientists yesterday published what it said was an unreleased DOE report that compared the cost of completing the MOX plant to other options. Use in fast reactors was considered briefly, but with this technology not readily available in the near term, the prime comparison was against a ‘dilution and disposal’ option which would see the plutonium mixed with inert materials and disposed of in the Waste Isolation Pilot Plant, or WIPP, in New Mexico.
Despite being 60% built, the MOX plant still needs some 15 years of construction work, said the leaked report, and then about three years of commissioning. Once in operation the plant would work through the plutonium over about 10 years with this 28-year program to cost $700-800 million per year – a total of $19.6-22.4 billion on top of what has already been spent. Not only is the price tag very high, but the timescale is too long: the report said this would not meet the disposal timeframe agreed with Russia.
The cost of the MOX plant could not be mitigated by income from sales of the MOX fuel because the regulatory process to gain approval to use MOX would be too burdensome for a commercial utility. The report said “it may be unlikely” that even a utility in a regulated market where fuel costs are passed on to consumers would “bear the risk of MOX fuel even if it is free”.
Dilution and disposal would cost $400 million per year, said the report, “over a similar duration” as MOX, working out at close to half the cost. Other advantages for dilution and disposal are that it requires no new facilities to be created or decommissioned after use, although the increase in WIPP disposal means “it may eventually become desirable to explore expansion of WIPP’s capacity” beyond currently legislated limits. This unique geologic disposal facility was said to be of “tremendous value to both DOE and the State of New Mexico”.
Critics cite the lack of any track record on cost or safety for small modular reactors, plus concerns over the nation’s lack of a permanent place to store used nuclear fuel. No one has built a commercial small modular reactor yet.
Tri-Cities interests hope to attract mass production of small modular reactors to the never-finished Energy Northwest reactor site at the Hanford nuclear reservation.
Small nukes: a long-term prospect for Tri-Cities?, by John Stang, Crosscut, 18 Aug 15 “……..economics and proximity to buyers will probably be the deciding factors on where NuScale will build both individual small modular reactors and its manufacturing plant, said McGough and John Dobken, spokesman for Energy Northwest (a consortium of Washington public utilities, including Seattle City Light).
Small modular reactors are prefab reactors whose parts are manufactured in one location, and then transported to the reactor site for final assembly. A modular segment would be a mini-reactor of 50 to 300 megawatts. Energy Northwest’s Columbia Generating Station, a nuclear plant, produces more than 1,190 megawatts of electricity, equal to about a tenth of the state’s energy needs. Small modular reactors are supposed to be designed so extra modules can be added as needed — with 12 modules being the theoretical maximum. They are similar to the small reactors that operate on U.S. Navy ships.
The initial cost estimate to take the project from design to the first Idaho Falls reactor is roughly $1 billion. In recent years, the deep-pocketed global giant Fluor Corp. bought NuScale.
NuScale, Energy Northwest, the Utah Associated Municipal Power Systems (a Utah version of Energy Northwest) and the U.S. Department of Energy facility at Idaho Falls have agreed to build the first such reactor in Idaho by 2023. NuScale plans to submit its design to the Nuclear Regulatory Commission by late this year, hoping for a green light about 40 months later.
Rep. Gerald Pollett, D-Seattle and a leading Northwest nuclear power critic, said, “Talking about siting such a thing is premature.”
Critics cite the lack of any track record on cost or safety for small modular reactors, plus concerns over the nation’s lack of a permanent place to store used nuclear fuel. No one has built a commercial small modular reactor yet, although supporters contend they are similar to the small reactors that operate on U.S. Navy ships.
Energy Northwest’s interest in getting its own small modular reactor will depend on if and when Energy Northwest’s member utilities will need extra power. At this time, the consortium does not expect that need to grow for the next few years, Dobken said.
Another wrinkle is that a 1981 state law requires that a public utilities group conduct a public ballot on any significant energy generation project that is likely to increase utility rates. Consequently, a public vote stretching from Seattle to Kennewick could lurk in the future of a small modular reactor project if Energy Northwest’s rates might be affected.
Chuck Johnson of the nuclear watchdog organization Physicians for Social Responsibility voiced concern about a scenario in which a single 50-megawatt reactor module would fall beneath the ballot threshold of the 1981 Washington law, and the addition of 50-megawatt modules one at a time could keep a state project below that public-vote benchmark.
“We’re big on the technology and believe the technology should be made available,” Dobken said.
Such a manufacturing plant would need about 1.9 million square feet of space, employ about 1,000 people and would aim to produce 36 to 52 modules a year, McGough said. NuScale is looking at Hanford, the Southwest, Utah and several Midwest, Southern and Eastern seaboard states as potential manufacturing sites.
“The site is still up in the air. … It depends on who shows up with the orders first,” McGough said……http://crosscut.com/2015/08/small-nukes-a-long-term-prospect-for-tri-cities/
Review: MOX needs $800M a year http://www.aikenstandard.com/article/20150820/AIK0101/150829974/1121
Earlier this year, the Department of Energy commissioned the Red Team, a group led by Thom Mason, the director of the Oak Ridge National Laboratory, to evaluate cost projections and alternatives to the MOX method of plutonium disposition. The method includes the Mixed Oxide Fuel Fabrication Facility under construction at SRS.
The project is part of a nonproliferation agreement with Russia to dispose of 34 metric tons of weapons grade plutonium.
“The Red Team concluded that if the MOX pathway is to be successful, then annual funding for the whole program would have to increase from the current $400 million per year to $700 to 800 million per year over the next 2-3 years, and then remain at $700 to $800 million until all 34 metric tons are dispositioned,” officials wrote.
The Aiken Standard will have more on the MOX review in Friday’s paper.
UK invests in advanced nuclear fuel research, World Nuclear News, 7 Aug 15 “……The Department of Energy and Climate Change (DECC) has awarded £1.5 million ($2.3 million) to the NNL and £1.0 million ($1.6 million) to the University of Manchester to fund new capital equipment for nuclear fuel and manufacturing research……..
Meanwhile the Wall Street Journal reports that using modular construction techniques for the AP1000 reactor hasn’t worked. Building nuclear reactors out of factory-produced modules was supposed to make construction swifter and cheaper, but costly delays have shaken faith in the new construction method at the two US sites. “Modular construction has not worked out to be the solution that the utilities promised”
NuClearNews August 2015 New energy minister Andrea Leadsom has given the strongest signal yet that the Government is looking to support a new era of factory-built, nuclear power stations – with a Newcastle company leading the way on their development in the UK. Speaking at the Nuclear Industry Association conference Ms Leadsom said: “Small Modular Reactors are an option we are investigating further. These have the potential to drive down the cost of nuclear energy and make financing easier through shorter construction times and lower initial capital investment requirements, in addition to high value commercial opportunities.” (1)
Amidst a growing sense of frustration and hand-wringing over the delays in the current nuclear programme, new hope has emerged that support is on the way for a home-grown generation of Small Modular Reactors (SMR). Continue reading
This is quite an old article, but I find it remarkable because, for once, it mentions the enormous cost of security measures needed for small nuclear reactors in remote areas.
That is what is being proposed for Australia – by both the thorium enthusiasts, and the overseas companies desperate to keep the nuclear industry alive by selling small reactors to Australa (or, even more insidiously, by providing them to Australia “for free”, in exchange for South Australia importing radioactive trash, as outlined by nuclear proponent Oscar Archer )
the PM-2A’s purpose was to test whether reactors could be built in remote locations using prefabricated parts.
After the reactor was closed down, the US shipped 7700 cubic metres of radioactive contaminated rock and dirt to California, but passed through Dunedin, with a population of 124,000, the second largest city on New Zealand’s South Island, where it stayed for four days, raising local concerns, the New Zealand news site stuff.co.nz.
Russia has found that the logistics of even finding customers for its ANPP’s outweigh even the logistics of operating the plants. Russia has staked a financial bonanza on prospective orders for the plants, but there are, simply, no takers. And if there were, the logistics of securing such a plant against terrorists or accidents in remote areas would require at least the staff of a stationary plant.
Small-scale US nuclear reactor blamed for spiking cancer rates, casting pall over Russia’s FNPP fetish AMSTERDAM – A small nuclear power plant operated the United States at Antarctica’s McMurdo Sound has been implicated in dozens of cases of an unusual cancer in personnel who worked at or near the station between the years 1964 and 1973, US and New Zealand media have indicated. March 7, 2011 by Bellona Continue reading
Could Next-Gen Reactors Spark Revival In Nuclear Power?, National Geographic By Wendy Koch, JULY 24, 2015 Tech titans like Bill Gates are helping fund a new generation of commercial nuclear reactors,………..These are complex systems…They look good on paper but could be difficult to realize in practice.
Matthew McKinzie “These are complex systems,” says Matthew McKinzie, director of the nuclear program at the Natural Resources Defense Council, an environmental group that prefers solar, wind and energy efficiency—rather than nuclear—as climate solutions.
“They look great on paper but could be difficult to realize in practice,” he says of the advanced reactors. “A lot of projects in the past have led to disappointment.” He says reactors that don’t use the light-water design common in today’s nuclear power plants will need prototypes for testing and their private funds aren’t enough to cover the cost.
In addition, “molten salt is corrosive and messy to work with,” says McKinzie, who holds a doctorate in experimental nuclear physics..
Russ Bell, senior director of new plant licensing for the Nuclear Energy Institute says many new reactor designs are safe and “extremely innovative,” but since they need to be prototyped, it will take 20 to 25 years to bring them to market……
Bill Gates has visited China several times to seek its cooperation in developing a next-gen reactor. He chairs TerraPower, which has designed a traveling wave reactor that runs on depleted uranium and produces very little nuclear waste……
“It’s American technology. I personally want the United States to get it first,” says Leslie Dewan. Her company, Transatomic, plans five more years of experimental and design work before aiming to build a 20-megawatt prototype.
“We’ve been talking with the national labs about it,” she says, noting the Department of Energy has a new loan guarantee program for advanced nuclear reactors. “There’s really good buy-in from DOE for developing a wide range of technologies.”
Even if all goes well, Dewan says, it will take at least a decade to develop a commercial molten salt reactor.
Construction starts and delays. Deconstructing the nuclear industry
Myle Schneider,Antony Froggatt, 27 July 15 “…………WNISR 2015 goes further and deeper than previous reports in analyzing the pace of nuclear power plant construction: the length of the process, the reasons for delays, the number of projects that have been cancelled or suspended, and how construction trends vary from country to country. These are limiting factors in any plan for a global scale-up of nuclear power.
The average construction time of the 40 units that started up in nine countries since 2005—all but one (in Argentina) in Asia or Eastern Europe—was 9.4 years, with a large range from 4 to 36 years. Construction starts plunged from 15 in 2010 to three in 2014. There are currently 62 reactors under construction, five fewer than a year ago, and at least three-quarters of these projects are facing delays. In 10 of 14 countries that are building new reactors, all projects are delayed, many by years. Five reactors that are “under construction” are projects that began more than 30 years ago.
For the first time, this year’s report devotes a full chapter to Generation III+ reactors such as the Westinghouse AP1000, Rosatom AES-2006, and Areva EPR—advanced reactors designed to improve the safety and economics of nuclear power. These reactors are not proving easy to build: By May 2015, 18 next-generation reactors were under construction, but only two projects were still on schedule; the rest were running behind by two to nine years. This includes the AP1000s being built at the Summer and Vogtle nuclear plants in the United States, which after only two years of construction are late by at least two years.
Generation III+ reactors were originally seen as a transition to even more advanced Generation IV reactors, but if Generation III+ reactors fail, the future for the nuclear industry looks bleak. Small Modular Reactors (SMRs) or radically new reactor designs, known as Generation IV and optimistically touted by some nuclear lobbyists as the key to de-carbonizing the global economy, are still decades away from commercial deployment. Meantime, existing nuclear plants around the world are edging toward retirement, with an average age that has been increasing steadily and now stands at 28.8 years……. http://thebulletin.org/deconstructing-nuclear-industry8565
Around the World, Nuclear Can’t Compete With Growing Renewables “What is spectacular is the extent to which the nuclear industry is appearing to ignore reality.” Katherine Tweed Greentech Media, July 16, 2015 “……..For the reactors that are in operation, many are aging rapidly. The mean age for reactors worldwide is about 29 years, and most were designed for life spans of 40 years, but many will operate beyond that. The cost of going beyond 40 years isn’t cheap — about $1 billion to $5 billion per reactor. By 2050, nuclear’s share of global electricity generation is expected to be similar to its role today, which amounts to about 10 percent.
Given the cost and time necessary to build large reactors, many in the industry have argued for a move to small modular reactors. Yet SMRs have also suffered from higher-than-expected costs and long development timelines, the report states.
The U.S. Department of Energy has been one of the proponents of this technology, yet none of the designs it said in 2001 could be available by the end of the decade were deployed. Of the two companies the DOE chose years later for SMR development funding, one slashed its spending on SMRs in 2014. NuScale, the other SMR manufacturer, is still continuing with development. Even so, “there is no evidence that SMRs will be constructed in the United States anytime soon,” the report states.
The picture is not rosier in other countries that have lent support to SMRs. South Korea, for example, has been developing an SMR since the 1990s, and while it was approved in 2012, no orders have yet been received. Saudi Arabia did say earlier this year it would test the technology in a three-year pilot.
“The static, top-heavy, monstrously expensive world of nuclear power has less and less to deploy against today’s increasingly agile, dynamic, cost-effective alternatives,” wrote Porritt. “The sole remaining issue is that not everyone sees it that way — as yet.”http://www.greentechmedia.com/articles/read/renewables-outpace-nuclear-in-major-economies
USA’s Experimental Breeder Reactor-II now permanently entombed, World Nuclear News
01 July 2015 The main clean-up contractor at the US Department of Energy’s (DOE’s) Idaho Site, has entombed an historic nuclear reactor in place and treated the reactor’s remaining sodium coolant….CH2M-WG, Idaho, LLC (CWI) said yesterday that crews with the Decontamination and Decommissioning (D&D) Program recently completed pouring more than 3400 cubic yards of concrete grout into the basement of the Experimental Breeder Reactor-II (EBR-II) building to fill in any remaining void spaces and effectively entomb the reactor.
Workers also removed and treated the last of the sodium coolant from the reactor’s nine heat exchangers. The exchangers were used to cool the liquid metal and direct the steam to a generating turbine to produce electricity when the reactor was operating.
The EBR-II was the basis of the US Integral Fast Reactor (IFR) program…….. The reactor was shut down in 1994 and its fuel was removed and transported to another site facility for safe storage.
The DOE grouted the reactor in place instead of removing it to protect workers from industrial hazards and radiological risks, CWI said. Crews filled the reactor vessel with grout over two years ago and recently completed the remainder of grouting at the facility under CWI’s contract.
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