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The News That Matters about the Nuclear Industry Fukushima Chernobyl Mayak Three Mile Island Atomic Testing Radiation Isotope

Sad to see U.S. progessive politician Alexandria Ocasio-Cortez sucked in by the nuclear lobby?

Say It Ain’t So, #Ocasio! (#AOC)   https://www.fairewinds.org/demystify/say-it-aint-so-ocasio-aoc?fbclid=IwAR1J2uPjFoiyDMFfHBT7Ucb6I-MmxZbu4rQ2VrYDzg5reSSvc3M6Yqb0Oc0.by Arnie Gundersen

Since early 2019 we’ve been hearing about the Green New Deal, a program that did not initially include nuclear power. Then suddenly, after an extensive lobbying effort by the atomic power industry, we heard: Ocasio-Cortez: Green New Deal ‘Leaves the Door Open’ on Nuclear.

How Green are the atomic power reactors proposed by the nuclear power industry?  Fairewinds has produced a two minute animation showing that carbon reduction via atomic power reactors is a nuclear industry marketing ploy.

Let’s look at the history of atomic power and the way governments and the atomic weapons and power industries have worked together to promote nuclear power. Nuclear physicists  discovered the nuclear chain reaction in 1938, and power has been produced using the atom since the 1940’s beginning with the Manhattan Project for the creation of the atomic bomb. Splitting the atom and creating nuclear weapons and power are old technologies that began more than 80 years ago! During that 80-year timespan, Americans and ratepayers in other capitalist countries were told  that using nuclear power as a source of electricity would be “too cheap to meter” if taxpayers would only subsidize more research.

Now we see impending financial collapse of almost all of the US nuclear power plants due to green energy! Solar, wind, wave, battery storage, and even newer technologies have proved that electricity can be created anywhere in the world in a manner that creates jobs, saves billions of dollars, and makes the air we breathe, the food we eat, and the water we drink much safer for all of us.

Instead of admitting nukes cannot compete with renewable energy, the atomic industrial complex is now proposing dozens of new designs that it claims on paper will compete in timeliness to successfully impact the growing climate crisis, including atomic reactors utilizing thorium and molten salt and new designs like Small Modular Reactors (SMRs), Micro-reactors, Traveling Wave, etc. Once again, the atomic power industry, which is the handmaiden to the nuclear weapons manufacturers, is sending lobbyists to convince your Congressional representatives that the atomic future will be different than the past. Lobbyists now claim that society will be so much better off when taxpayer funds bail out the aged, dangerous, and non-performing nukes and if the atomic power and weapons lobbies are given even more research subsidies.

Since the early 1960s there have been 250 applications to the Nuclear Regulatory Commission (NRC) and its precursor the Atomic Energy Commission (AEC) to generate electricity for profit using atomic power reactors. None of these 250 proposed atomic reactors  have been built on time or within budget. You did not misread; truly, every single proposed nuke went millions and then billions of dollars over budget and have started generating electricity years later if at all.

If a baseball player was at bat 250 times and struck out 250 times, would he still be playing baseball? Yet, the atomic lobbyists marketing nuclear power want us to pay them for more chances to use our money and strike out one more time.

Renewables, storage and conservation already have a well-proven track-record of lower costs, more jobs, and environmental compatibility than any of these newly imagined nukes will ever have – I say newly imagined because I have spent my career life as a nuclear engineer. When I first began my career, I drank the Kool-Aid and believed that nuclear power reactors were the solution to the world’s energy shortages and that atomic power created from the same technology as the atomic bomb was as safe as the nuke power industry claimed. As the 5 commercial meltdowns during the last 40-years have proved, especially the 3 major meltdowns that included explosions at Fukushima, nuclear power is simply not a safe method of generating electricity. The impact of the devastation from three simultaneous meltdowns at Fukushima Daiichi to the social culture, environmental legacy, personal health, and financial welfare of Japan in 2011 is not a legacy that should be passed onto future generations.

Why then is the US Congress, including AOC – one of the brightest members of this new Congress and the creator of the Green New Deal (#GND) – “leaving the door open” for the  same old atomic power marketing ploys? For more than 80-years, we have witnessed the economic failure, ratepayer bailouts, subsidized atomic meltdown insurance, and actual catastrophic meltdowns.

When will they ever learn?

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June 17, 2019 Posted by | election USA 2020, politics | Leave a comment

Nuclear power is far from “emissions free”

Nuclear energy not emissions-free, too lethal https://www.toledoblade.com/opinion/letters-to-the-editor/2019/06/15/nuclear-energy-not-emissions-free-dangerous/stories/20   Nuclear power is not a panacea for climate change and doesn’t deserve bailouts like House Bill 6. It is a catastrophically dangerous, dirty, expensive, deteriorating technology that is not “clean”, “indispensable”, “carbon-free”, or “renewable.”

Gregory Jazcko, former Nuclear Regulatory Commission chairman, warned, “I oversaw the U.S. nuclear power industry. Now I think it should be banned. The danger from climate change no longer outweighs the risks of nuclear accidents.”

Perry and Davis Besse cost a whopping $8.7 billion to build and billions more in maintenance, repairs, and subsidies. Grid operator PJM has determined that closing Perry and Davis-Besse would not destabilize the grid.

The nuclear power life cycle produces copious carbon and other greenhouse gases from uranium mining, milling, refining, conversion, and enrichment; fuel fabrication; transportation; reactor construction, maintenance, decommissioning; and radioactive waste management.

While nuclear generated electricity is low in carbon, it has never been zero emissions. Reactors emit methane, a greenhouse gas, and radioactive Carbon-14, with a 5,700-year half-life. The scientific and medical communities have determined that there is no safe dose of radiation exposure.

Ingested or inhaled radioactive strontium-90 and cesium-137 replace calcium and potassium respectively, irradiating bones and muscles for decades. Carcinogenic radioactive iodine-131 is absorbed by the thyroid which is why potassium iodide is provided to residents near reactors. Cobalt-60 is a liver, kidney, and bone carcinogen. Specks of inhaled plutonium-239, with a half-life of 24,000 years, can cause lung cancer. Miles of buried, inaccessible, deteriorating pipes have leaked tritium, which is radioactive hydrogen; no technology can remove it from contaminated water.

Over 32 years, disasters occurred at Three Mile Island, Chernobyl, and Fukushima. The U.S. has 23 Fukushima-type reactors at 16 sites. The NRC and other researchers postulate a 50 percent chance of another catastrophic accident in approximately the next 20 years.

To limit utility liability, Congress passed the 1957 Price Anderson Act which caps accident compensation at $12.6 billion; a 1982 NRC study calculated a severe accident could cause 50,000 fatalities and $314 billion in property damage which is $720 billion today.

A 1,000-megawatt reactor contains as much long-lived radiation as 1,000 Hiroshima-sized bombs from which humans and the environment must be protected forever, but the NRC admits that no engineered structure can last the time required to isolate these wastes and that leakage will occur.

Early warnings to resolve radioactive waste before licensing new reactors were ignored. There are 88,000 tons of irradiated fuel “temporarily” stored in problematic pools and casks at 75 environmentally unsuitable reactor sites in 33 states because no permanent repository exists.

In 2012, Ohio was 13th in the U.S. for wind capacity and investment; this virtually ceased due to a 2014 law which mandated the country’s most restrictive wind turbine setbacks and severely impeded Ohio’s 2008 renewable energy and efficiency standards. HB 6 will finish the job.

Even conservative voters prefer solar, wind, and efficiency and oppose fees to keep old nuclear plants operating. Conservative groups testified against HB 6, as corporate welfare and a glorified slush fund.

Ohio needs to strengthen renewable energy and efficiency standards, stop throwing good money after bad, close Perry and Davis Besse as scheduled, and retrain workers in renewable energy jobs.

The writer is past chairman, Ohio Sierra Club Nuclear-Free Committee, of Willoughby Hills, Ohio.

June 17, 2019 Posted by | climate change, USA | Leave a comment

U.S. Rep. Tulsi Gabbard from Hawaii wants the U.S, government to provide unclassified report on Runit nuclear waste dome

June 17, 2019 Posted by | environment, OCEANIA, USA, wastes | Leave a comment

Nevada Gov. Steve Sisolak restates opposition to Yucca Mountain restart plan

June 17, 2019 Posted by | politics, USA, wastes | Leave a comment

In USA Catholic priests, some in gaol, some facing gaol – for dramatic opposition to nuclear weapons

June 17, 2019 Posted by | opposition to nuclear, USA | Leave a comment

U.S. military intelligence agency increases accusations against Russia about nuclear testing

U.S. military intelligence steps up accusation against Russia over nuclear testing, WP,    By Paul Sonne,  14 June 19 The U.S. military intelligence agency stepped up its accusations against Russia over low-yield nuclear testing on Thursday, saying that the country has conducted nuclear weapons tests that resulted in nuclear yield.

The new statement from the Defense Intelligence Agency amounted to a more direct accusation against Russia, compared to hedged comments about Russian nuclear testing that DIA Director Lt. Gen. Robert P. Ashley Jr. made in a speech in Washington in late May.

“The U.S. Government, including the Intelligence Community, has assessed that Russia has conducted nuclear weapons tests that have created nuclear yield,” the DIA statement released Thursday said. The agency didn’t give any details about the alleged tests or release any evidence backing the accusation.

Previously, the agency’s director said that Russia “probably” was not adhering to the “zero-yield” standard the United States applies for nuclear testing. He suggested that Russia was probably conducting tests with explosions above a subcritical yield as part of its development of a suite of more-sophisticated nuclear weapons.

Russia has vehemently rejected Washington’s accusations, with Russian Foreign Minister Sergei Lavrov describing them as delusional.

“We consider claims that Russia may be conducting very low-yield nuclear tests as a crude provocation,” Russia’s Foreign Ministry said in a statement after the DIA first aired the allegations. “This accusation is absolutely groundless and is no more than another attempt to smear Russia’s image.”

DIA’s latest accusation came a day after Under Secretary of State for Arms Control and International Security Andrea L. Thompson met with Russian Deputy Foreign Minister Sergei Ryabkov in Prague to discuss arms control.

The meeting didn’t result in any significant decisions. After the meeting, Thompson said in a message on Twitter that she raised a range of issues on which the United States would like to engage in a more constructive dialogue with Russia. …… https://www.washingtonpost.com/world/national-security/us-military-intelligence-steps-up-accusation-against-russia-over-nuclear-testing/2019/06/13/2dadf2e2-8e26-11e9-b162-8f6f41ec3c04_story.html?utm_term=.9b2400d2dfbe

June 15, 2019 Posted by | politics international, Russia, USA, weapons and war | Leave a comment

The continuing and ever-increasing costs of America’s nuclear wastes

Americans Are Paying More Than Ever to Store Deadly Nuclear Waste as Plants Shut Down  https://www.bloomberg.com/news/articles/2019-06-14/u-s-bill-to-store-nuke-waste-poised-to-balloon-to-35-5-billion, By June 14, 2019, The Maine Yankee nuclear power plant hasn’t produced a single watt of energy in more than two decades, but it cost U.S. taxpayers about $35 million this year.Almost 40 years after Congress decided the U.S., and not private companies, would be responsible for storing radioactive waste, the cost of that effort has grown to $7.5 billion, and it’s about to get even pricier.

With no place of its own to keep the waste, the government now says it expects to pay $35.5 billion to private companies as more and more nuclear plants close down, unable to compete with cheaper natural gas and renewables. Storing spent fuel at an operating plant with staff and technology on hand can cost $300,000 a year. The price tag for a closed facility: More than $8 million, according to the Nuclear Energy Institute.

The U.S. Energy Department “has been clinging to unrealistic expectations,” said Rodney McCulllum, senior director for decommissioning and used fuel at the institute, an industry trade group. “The industry was never supposed to have this problem.”

Higher and Higher

DOE’s estimates of its nuclear-waste storage liabilities increase every year

The issue has been long-discussed. Initially, the plan was to store the radioactive waste deep underground at Yucca Mountain in Nevada, starting in 1998. But the project faced strong opposition from environmental groups, state residents and Democratic Senator Harry Reid of Nevada, who served as the U.S. Senate majority leader.

After years of legal challenges, President Barack Obama cut funding for the project in 2009. Since then, there have been few realistic alternatives. Lawmakers in Washington held a hearing Thursday to evaluate bills aimed at how best to handle the waste.

In the meantime, the U.S. has no permanent place of its own to store radioactive material that will remain deadly for several thousand years.

About 80,000 metric tons of nuclear waste have been stored at 72 private locations across the U.S., or enough to cover a football field to a depth of 20 meters (66 feet), according to the Government Accountability Office. While most are at operating plants, incorporated into the plant’s daily activities, 17 are at closed facilities, with seven at sites — including Maine — where the plant itself has been demolished.

In those cases, only the storage casks remain, and keeping them monitored and protected as they get older can be an expensive operation.

After a legal battle with the U.S., the Maine Yankee plant and two sister facilities in Connecticut and Massachusetts — responsible for 123 casks of nuclear waste — were awarded $103 million from a U.S. Treasury Department fund in February, covering their expenses from 2013 through 2016.

“We only remain in business because the federal government has not met its obligation to remove the fuel,” said Eric Howes, director of public and government affairs at Maine Yankee. “Our only purpose is to store the fuel.”

Meanwhile, the growing number of shuttered plants, along with the aging of existing facilities, means these costs are about to surge. Once a storage site hits the 20-year mark it has to be relicensed. Older ones require more thorough inspections and additional paperwork, including submitting a so-called aging management plan.

About 30 of these licenses have been renewed, and that figure will more than double by the end of next year, according to the NEI. Some sites have more than one license.

“As we shut down more plants, the costs of used-fuel storage is going to go up,” McCulllum said by telephone.

A Shrinking Fleet

U.S. nuclear reactors are losing ground

Most of the waste involves spent fuel rods, and some sites include casks with radioactive components from reactors that have been torn down. Even though the government is legally responsible for storage expenses, it doesn’t make it easy for companies to recover the costs. The Yankee companies have had to file four lawsuits over the years, and the Energy Department sometimes pushes back.

In the most recent case, the agency challenged about $1 million in legal fees and administrative costs that it successfully argued weren’t related to fuel-storage expenses.

“They’ve contested every step of the way,” Howes, the Yankee spokesman, said.

June 15, 2019 Posted by | USA, wastes | Leave a comment

Oyster Creek Nuclear Station’s nuclear waste, and opposition to the Holtec plan

June 15, 2019 Posted by | politics, USA, wastes | Leave a comment

Multibillion dollar plutonium pit factory – jobs, jobs – yeah – but is it safe, or even necessary?

Atomic bomb factory could produce more than 1,000 jobs for SC. But how safe is it?   https://www.charlotteobserver.com/news/state/south-carolina/article231568153.html, BY SAMMY FRETWELL. JUNE 14, 2019     Anti-nuclear activists fired away Friday at what they said is a dangerous and little known plan to produce deadly atomic weapons components at the Savannah River Site near Aiken.

The federal government has proposed a multibillion dollar plutonium pit factory that could create as many as 1,700 jobs as part of an effort to make fresh plutonium, a major ingredient in atomic bombs.

But the proposed factory is raising concerns about its risk to the environment and the public, in addition to how it would be viewed by world leaders. Critics say the government may use the pits in a new type of nuclear weapon, instead of only replenishing the existing stockpile with fresh plutonium.

Savannah River Site Watch, a nuclear watchdog organization that tracks SRS, planned a public meeting Friday night in Aiken County to brief people on the government’s plan at SRS, a 310-square-mile complex in western South Carolina.

“We don’t think people are really aware of what is going on: that this new mission is fraught with risk that could come to SRS,’’ Savannah River Site Watch director Tom Clements told The State.

Nuclear watchdog groups from New Mexico and California joined SRS Watch for the forum in Aiken County, where many SRS workers live. Before the Friday meeting, the groups held a news conference to voice concerns. The U.S. Department of Energy plans its own forum on the proposal June 27 in North Augusta.

The Energy Department is proposing to convert its failed and unfinished mixed oxide fuel plant at SRS for use as a plutonium pit plant. The cost to convert the plant could be up to $5 billion, nuclear watchdogs said.

Federal records show the new SRS plant would produce at least 50 pits for nuclear weapons each year. A federal site in Los Alamos, N.M., would produce another 30 pits, according to the government’s plan. Part of the reason for needing more pits is to refresh the nation’s aging stockpile of atomic weapons, federal officials have said.

Officials with the U.S. Department of Energy were not immediately available Friday for comment, but a public notice this week said the pits it wants to replace were made from 1978-89. Most plutonium cores were produced at the Rocky Flats, Colo., nuclear site decades ago, but that site has since closed.

“Today, the United States’ capability to produce plutonium pits is limited,’’ according to a DOE public notice. The notice said producing 80 pits per year, beginning in 2030, would “mitigate the risk of plutonium aging.’’

“The security policies of the United States require the maintenance of a safe, secure and reliable nuclear weapons stockpile,’’ the public notice said.

Pro-nuclear groups say the pit plant is a good replacement for the MOX facility. Not only will it provide jobs, but it will help keep the United States safe, they say.

“We are 100 percent supportive,’’ said Jim Marra, director of Citizens for Nuclear Technology Awareness. ‘’From a national defense standpoint, it is vitally important. Quite frankly, there’s no better place to do it, at least part of it, than Savannah River Site. The expertise in dealing with plutonium, and the existing work now going on with plutonium, is huge.’’

Clements and Jay Coghlan, who directs Nuclear Watch New Mexico, don’t see it that way.

“It will be a great waste of taxpayer’s money,’’ Coghlan said. “There also is a long history of chronic safety problems and environmental or waste problems associated with pit production.’’

Clements said plutonium, one of the most dangerous parts of a nuclear weapon, is toxic and a potential threat to the environment. Workers would be exposed to plutonium at SRS, and the public could be exposed to plutonium if an accident occurs, he said.

SRS was a vital cog in Cold War weapons production. Built in the early 1950s, it produced materials, such as tritium, that were used for nuclear weapons. It has been largely in a cleanup mode and looking for new missions since the early 1990s. More than 10,000 people work there.

One of the biggest questions raised by pit project critics is whether the pits are needed as badly as the DOE contends.

Existing plutonium pits, essentially the cores of nuclear bombs, have a longer shelf life than the government has recently said they have, said Marylia Kelley, executive director of Tri-Valley CARES in California. She said past government studies have shown that. One study shows that plutonium pits can last 85- 100 years, about 25-40 years longer than previously thought.

But the government today is working on a new type of nuclear weapon the pits could be used in — and nuclear proliferation is a bad idea, critics say.

“If you don’t design new nuclear weapons, you will need to do very few pits every year,’’ Kelley said. “This enterprise is not necessary, and I would argue that we need a very robust discussion here.’’

She said if the U.S. develops a new weapon and tests it, other countries may do the same, potentially leading to an escalation of nuclear arms.

Marra said he’s not opposed to plutonium pits being used for new weapons.

“’If that includes new weapons systems, I think that’s the right thing to do,’’ he said. “Our adversaries are not standing still in this regard. China and Russia are continuing to modernize their nuclear weapons, and we all know about North Korea.’’

Plans to develop the plutonium pit factory are not final. A bill in the U.S. House of Representatives, discussed recently in a key committee, would derail the plan.

The Department of Energy plans to conduct an environmental impact statement on how the plant would affect the environment and human health. The current proposal isn’t the first time the DOE has brought up the matter of a new pit plant. The agency proposed a pit factory more than 17 years ago, but the plan never went anywhere.

Reach Fretwell at 803-771-8537. @sfretwell83

June 15, 2019 Posted by | USA, weapons and war | Leave a comment

Shelby Surdyk, Alaska’s nuclear disarmament youth campaigner

From NYC to Sitka, this Alaskan is taking on nuclear disarmament https://www.ktoo.org/2019/06/13/alaskans-chip-away-at-nuclear-disarmament/  

By Sheli DeLaney, KRNN,  June 13, 2019   On Wednesday’s Juneau Afternoon, the Treaty on the Non-Proliferation of Nuclear Weaponswas a topic of discussion as host Sheli DeLaney sat down with nuclear disarmament advocate Shelby Surdyk.Nuclear disarmament became Surdyk’s cause when she was in high school in Skagway and met a new teacher who had previously taught at the U.S. military base on Kwajalein Island in the Marshall Islands. The central Pacific Ocean nation was the site of U.S. nuclear testing between 1946 and 1958.

The teacher educated students about the history and impact that nuclear weapons testing had on the Marshallese people, and their story left a lasting impression on Surdyk.

“I think that once you become connected to people whose lives have been touched by nuclear weapons testing, it’s a path you can’t turn back from,” she said.

Today, Surdyk is the project manager for HOPE: Alaska’s Youth Congress for the Global Elimination of Nuclear Weapons, a five-day conference for high school students to be held in Sitka in April 2020. The idea for the youth congress was introduced by Veterans for Peace, an organization that opposes the proliferation of nuclear weapons as part of their philosophy.

Surdyk recently attended the 2019 NPT PrepCom, a conference held at the United Nations headquarters in New York City this spring. She will be speaking about her experience over a brown-bag lunch hosted by Veterans for Peace this Friday at noon at the Juneau Arts and Culture Center.

June 15, 2019 Posted by | opposition to nuclear, PERSONAL STORIES, USA | Leave a comment

U.S. Department of Energy moves to redefine ‘high-level’ nuclear waste. More waste coming to WIPP?

June 15, 2019 Posted by | politics, USA, wastes | Leave a comment

NUCLEAR ENERGY LEADERSHIP ACT Some USA politicians push legislationfor USA to be global chieftan in new nuclear reactors

June 13, 2019 Posted by | politics, USA | 1 Comment

In US House, Democrats stop Republicans’ push for low-yield nuclear weapons

Democrats rebuff GOP push for low-yield nuclear weapons, By SUSANNAH GEORGE, 12 June 19, WASHINGTON (AP) — House Democrats rebuffed attempts by Republicans Wednesday to authorize funding for so-called low-yield nuclear weapons that the Trump administration says are key to deterring Russia.

Republicans put forward two amendments to fund the weapons in a defense bill, but both were rejected in a voice vote Wednesday. A formal roll-call vote on the amendments was planned for later.

Armed Services Committee Chairman Adam Smith, D-Wash., eliminated funding in the legislation for low-yield nuclear weapons that could be placed on submarines. He said the weapons increase the likelihood of nuclear conflict. …..

Nuclear policy issues will likely reemerge in the Republican-controlled Senate. The House and Senate will have to negotiate a final version of the annual policy bill before it becomes law……

Republicans and Democrats also disagree over the total amount of money needed to properly fund the Pentagon and nuclear elements of the Energy Department. The White House requested a $750 billion budget, but Smith said a slightly smaller budget of $733 billion would promote efficiency…..https://www.apnews.com/d04a6f8f5edb4c4490013aa32e78417f

June 13, 2019 Posted by | USA, weapons and war | Leave a comment

Danger in Trump’s decision to keep nuclear weapons data classified

June 13, 2019 Posted by | USA, weapons and war | 1 Comment

Holtec and Ukraine developing Small Modular Nuclear Reactors (dodgy underground devices)

Consortium established for SMR-160 deployment in Ukraine, WNN 12 June 2019

The consortium document was signed by Holtec CEO Kris Singh, Energoatom President Yury Nedashkovsky and SSTC President Igor Shevchenko. The signing ceremony – held at Holtec’s headquarters in Camden, New Jersey – was attended by senior Holtec officials and delegations from Mitsubishi Electric, the US Department of Energy and Energoatom.

The consortium is a US company registered in Delaware with each of the three parties owning allotted shares. Its technology operation centre will be based in Kiev, Ukraine…….

The MoU includes the licensing and construction of SMR-160 reactors in Ukraine, as well as the partial localisation of SMR-160 components. The Ukrainian manufacturing hub is to mirror the capabilities of Holtec’s Advanced Manufacturing Plant in Camden, and will be one of four manufacturing plants Holtec plans to build at distributed sites around the world by the mid-2020s.

Holtec’s 160 MWe factory-built SMR uses low-enriched uranium fuel. The reactor’s core and all nuclear steam supply system components would be located underground, and the design incorporates a wealth of features including a passive cooling system that would be able to operate indefinitely after shutdown….

The SMR-160 is planned for operation by 2026.

The SMR-160 is currently undergoing the first phase of the Canadian Nuclear Safety Commission’s three-phase pre-licensing vendor design review process. State Nuclear Regulatory Inspectorate of Ukraine, the nuclear regulatory authority in Ukraine, is expected to coordinate its regulatory assessment of SMR-160 under a collaborative arrangement with its Canadian counterpart.  http://www.world-nuclear-news.org/Articles/Consortium-established-for-SMR-160-deployment-in-U

Edwin lyman on the safety of these reactors “Holtec SMR-160. The Holtec SMR-160 will generate 160 MWe. Like the NuScale, it is designed for passive cooling of the primary system during both normal and accident conditions. However, the modules would be much taller than the NuScale modules and would not be submerged in a pool of water. Each reactor vessel would be located deep underground, with a large inventory of water above it that could be used to provide a passive heat sink for cooling the core in the event of an accident. Each containment building would be surrounded by an additional enclosure for safety, and the space between the two structures would be filled with water. Unlike the other iPWRs, the SMR-160 steam generators are not internal to the reactor vessel. The reactor system is tall and narrow to maximize the rate of natural convective flow, which is low in other passive designs. Holtec has not made precise dimensions available, but the reactor vessel is approximately 100 feet tall, and the aboveground portion of the containment is about 100 feet tall and 50 feet in diameter (Singh 2013)

For these and other SMRs, it is important to note that only limited information is available about the design, as well as about safety and security. A vast amount of information is considered commercially sensitive or security-related and is being withheld from the public. ….

 in the event of a serious accident, emergency crews could have greater difficulty accessing underground reactors.

Underground siting of reactors is not a new idea. Decades ago, both Edward Teller and Andrei Sakharov proposed siting reactors deep underground to enhance safety. However, it was recognized early on that building reactors underground increases cost. Numerous studies conducted in the 1970s found construction cost penalties for underground reactor construction ranging from 11 to 60 percent (Myers and Elkins). As a result, the industry lost interest in underground siting. This issue will require considerable analysis to evaluate trade-offs…. ” https://nuclearinformation.wordpress.com/2017/11/29/edwin-lyman-on-small-modular-reactors/  erious accident, emergency crews could have greater difficulty accessing underground reactors.

June 13, 2019 Posted by | Small Modular Nuclear Reactors, Ukraine, USA | Leave a comment