nuclear-news

Plutonium pit ‘panic’ threatens America’s nuclear ambitions

The Hill, BY BRAD DRESS – 03/06/24

This is the second story in a series about Sentinel, the Air Force’s nuclear missile modernization project. Other stories touch on the challenges in the surrounding communities near Sentinel construction and with the Air Force’s budget issues. 

At Los Alamos National Laboratory in New Mexico, where the U.S. built its first nuclear bomb, work on a key component of the next generation of nuclear missiles is already underway.

Workers have begun laying the groundwork for the first production later this year of plutonium “pits” — hollow spheres the size of a half grapefruit, made from the rare chemical element. They fit inside a warhead and create a nuclear explosion when compressed by explosives.

These pits are crucial: As a source of nuclear fuel, they will transform the Air Force’s new, modernized nuclear missiles, called Sentinel, into weapons of mass destruction. Sentinel is scheduled to be fielded in the Western rural U.S. in the 2030s, though that is likely to be delayed.

The pit work will first unfold at the nation’s only fully operational plutonium pit production facility, the Plutonium Facility at Technical Area 55, in a building known as PF-4 at Los Alamos.

Overseeing the production is the Department of Energy’s National Nuclear Security Administration (NNSA), which is pushing to get Los Alamos whirring to life this year to start making plutonium pits, with the hopes of eventually producing 30 per year at the site. The agency also plans to open a brand-new plutonium pit production plant in South Carolina, known as the Savannah River site, to meet an ultimate target goal of 80 pits a year.

But the NNSA hasn’t done large-scale pit production since the early 1990s, creating unease about restarting the process after decades of inactivity. And the agency is plagued by schedule delays, workforce challenges and budget concerns.

Sébastien Philippe, a research scientist at Princeton University who has closely tracked the Sentinel project, said the NNSA is struggling to meet its goals and raised concerns about the lack of a specific cost estimate for pit production.

“At this point, the deadline keeps moving, and the cost keeps growing,” he said.

The pit production is part of a U.S. scramble to modernize its entire triad after delaying such efforts for years due to the war on terrorism. The total modernizing effort is expected to exceed more than a trillion dollars.

Washington will replace its aging Minuteman III Intercontinental Ballistic Missiles and build new submarines and bomber planes capable of carrying nuclear weapons, with the latest 10-year projection cost putting the modernization effort at $750 billion……………………………………………………………..

The NNSA pit production effort has been flagged for several years by a government watchdog group, the Government Accountability Office (GAO). The GAO in a 2020 report said history has “cast doubt on NNSA’s ability to produce the required number of plutonium weapon cores on schedule.”

“We found NNSA’s plans for re-establishing pit production do not follow best practices and run the risk of cost increases and delays,” GAO said in an updated report last year. “The re-establishment of pit production capabilities is one of the most complex and potentially costly efforts presently operated by NNSA.” 

The NNSA budget for pit production proposed in Congress for the next fiscal year is around $3 billion. The overall NNSA budget is expected to be boosted by 8 percent to $24 billion, based on congressional budget documents.

Sen. Elizabeth Warren (D-Mass.), a member of the Senate Armed Services Committee, grilled NNSA Administrator Jill Hruby in a 2022 hearing over budget and schedule concerns………………….

n last year’s National Defense Authorization Act, which was signed into law in December, lawmakers inserted several amendments due to concern about NNSA’s work.

Congress noted that reports have flagged the management and oversight of the plutonium modernization program with “serious deficiencies,” and required the NNSA to develop a master schedule and a life-cycle cost estimate. ……………………………………………………..

NNSA facing workforce challenges, lawsuit 

…………………………………………………………..With the NNSA restarting pit production after so long, others are concerned about the potential for contamination and leakage from the hazardous practice.

Rocky Flats looms large over the debate. In 1957 and 1969, fires broke out at the facility and nearly created an environmental catastrophe on par with the meltdown in Ukraine’s Chernobyl plant.

The site was also known to have leaked barrels of radioactive waste into nearby fields. The FBI and the Environmental Protection Agency raided Rocky Flats in 1989 over environmental concerns.

The facility stopped production in 1992 and officially shut down in 1994. The Department of Energy took 10 years to clean up the area, which was designated as a hazardous waste site.

And Los Alamos itself has shut down in the past, from 2013-16, over safety concerns at PF-4.

The shaky history has spurred concerns in the communities around Los Alamos, where the “downwinders” — those who were affected by the winds carrying radioactivity after the Trinity test — have long kept a critical eye on NNSA operations. 

As part of the new pit production, remaining plutonium after conversion to a new pit will be stored as waste. That waste will be sent to a disposal plant in Carlsbad, N.M.

Los Alamos said the facility has upgraded fire suppression systems and checked nuclear containers to ensure safety in case of an accident. Additionally, plutonium pits are handled inside of sealed compartments, which technicians insert gloves into to prevent harmful exposure.

But Jay Coghlan, executive director of Nuclear Watch New Mexico, wasn’t convinced the safety measures were sufficient.

“Los Alamos has a very checkered nuclear safety track record,” he said, and “production always causes more contamination and more radioactive waste.” 

Coghlan sued the NNSA in 2021 for violating the National Environmental Policy Act (NEPA), which requires an environmental review and public input for government projects. He said the NNSA has not conducted a robust town hall or environmental review on the pit production.

“That is not just a paper document. It requires public hearings. It requires NNSA to essentially make its case,” he said. “It requires NNSA to respond to public comment.”……………………………………

Questions linger over Savannah River  

At the Savannah River site in South Carolina, the NNSA will have to start up a facility that has never produced plutonium pits……………………………………………………………

The new Savannah site is only half-designed and is estimated to finish construction sometime between 2032 and 2035 — missing the goal of the Air Force, which wants to field its 400 Sentinel missiles in 2030.

At the same time, the budget for the site to complete construction has ballooned from about $3 billion in 2017 to an estimated cost of $11 billion.

Von Hippel, the nuclear policy scientist, and Curtis Asplund, an assistant professor in the department of physics and astronomy at San José State University, said it would be better to focus on small-scale pit production at Los Alamos first.

“Trying to build a second pit production facility at the Savannah River Site in a building designed for another purpose while simultaneously re-equipping Los Alamos’s plutonium facility and crowding it with hundreds of trainees for both facilities is a prescription for a fiasco,” they wrote in an opinion last year………………………………………………….

With the challenges facing the NNSA, critics question if the pits are even needed, given the tens of thousands made during the Cold War period. The pits used today are about 40 years old, and while around 100 years is considered the end of a pit’s life, that’s a best guess…………………………………………….. more https://thehill.com/policy/defense/4510010-plutonium-pits-us-nuclear-ambitions-sentinel/

March 9, 2024 Posted by Christina Macpherson | - plutonium, USA, weapons and war | Leave a comment

Dose the US Need New Plutonium Pits?

Maintaining nuclear weapons is both dangerous and expensive.

 Inkstick, ALICIA INEZ GUZMÁN,  MARCH 4, 2024

Sprinkled across five western states, in silos buried deep underground and protected by reinforced concrete, sit 400 intercontinental ballistic missiles. Each of those missiles is equipped with a single nuclear warhead. And each of those warheads is itself equipped with one hollow, grapefruit-sized plutonium pit, designed to trigger a string of deadly reactions.

All of those missiles are on “hair-trigger alert,” poised for hundreds of targets in Russia — any one of which could raze all of downtown Moscow and cause hundreds of thousands of casualties.

Except — what if it doesn’t? What if, in a nuclear exchange, the pit fizzles because it’s just too old? In that case, would the weapon be a total dud or simply yield but a fraction of its latent power?

Outwardly, at least, that’s the question driving a whole new era of plutonium pit production at Los Alamos National Laboratory (LANL) and the Savannah River Plutonium Processing Facility in South Carolina……………………………………………………

Now, as the nuclear industrial complex awakens from its long slumber, the resumption of plutonium pit production has emerged as a deeply polarizing and political act. Anti-nuclear activists have accused the federal government of exploiting the uncertainty around aging to jumpstart a nearly $60 billion dollar manufacturing program. They assert that the real reason America has resumed the production of pits is for the purpose of introducing a new generation of warheads for a new generation of missiles — the first of which is the Sentinel, one of the most complex and expensive programs in the history of the US Air Force……………………………………………………..

“The issue of plutonium pit aging is a Trojan horse for the nuclear weaponeers enriching themselves through a dangerous new arms race,” said Jay Coghlan, executive director of Nuclear Watch New Mexico, an anti-nuclear group based in Santa Fe. “Future pit production is not about maintaining the existing, extensively tested stockpile. Instead, it’s for deploying multiple new warheads on new intercontinental ballistic missiles.”

……………………………………………..America’s plutonium pits are also estimated to hold their power for a good 85 years, and some estimates give them decades more. Much of the current stockpile is about 40 years old, which suggests there is no looming crisis.

The mystery of pit aging has nonetheless been at the heart of numerous studies conducted over decades at LANL and Lawrence Livermore National Laboratory (LLNL). In 2006, each lab released its findings to JASON, an independent and elite group of scientists that’s been advising the federal government since the Cold War, for review. JASON’s conclusion: “Most plutonium pit types have credible lifetimes of at least 100 years.” Half a dozen years later, researchers at LLNL were able to artificially age plutonium to 150 years. Those plutonium samples, researchers stated at the time “continue to age gracefully.”

But, come 2019, the political tide had changed. With President Donald Trump in office and a receptive Congress backing a plan to reinstate pit production, JASON was not convinced that enough studies on aging had been conducted in recent years. The group urged more studies. It also urged that “pit manufacturing be re-established as expeditiously as possible,” the brief report read………………………………………………………………………………………………….

Too Big to Fail”

The political machinations actually go back even further — to the 2010 concession that President Barack Obama made to a largely Republican bloc of Senators: arms control in exchange for a revival of the nuclear weapons complex.

“The deal was that in return for Senate ratification of the New [Strategic Arms Reduction Treaty], Obama would support a modernization plan that would modernize literally almost every aspect of the entire US nuclear arsenal,” explained Sharon Weiner, an associate professor at the School of International Service at American University.

At the time, the deal was heralded as a rare moment of bipartisan consensus. Today, experts look back on it as the beginning of a new era, a tectonic modernization of America’s nuclear triad — land, sea and air — now projected to cost close to $2 trillion over the next 30 years. That’s roughly the GDP of Canada.

Plutonium pits, of course, represent only a small fraction of the cost. That mind-boggling figure reflects a total reimagining of the nation’s entire nuclear program, complete with brand new ballistic missile submarines, 400 new Sentinel intercontinental ballistic missiles, tactical aircrafts, underground silos and 800 nuclear warheads.

The Sentinel program alone — cost, $131 billion — is a juggernaut. “I think this program has become too big to fail for an entrenched part of the military-industrial-congressional complex,” said Geoff Wilson, an expert on federal defense spending at the Independent watchdog, Project on Government Oversight.

And all of it together is being embraced in response to the same argument — that missiles, warheads, silos, and pits, nearly everything built during the Cold War — are getting too old. In a society defined by obsolescence, the language is potent.

……………………………………………………..A New Cold War

In the unthinkable scenario that a Sentinel is deployed, it would propel like a rocket beyond earth’s atmosphere and into space. As it reached its apogee, the missile would shed all its pieces and the warheads would descend toward their intended targets, half a world away.

For now, though, the Sentinel is barely a reality. The program is so complex and vastly over budget that some in the arms control community are calling for its complete cancellation. Experts question such a missile’s ability to deter China without provoking Russia. Other critics consider the plan to build new weapons as a dangerous return to the policies of the Cold War.

……………………………………even if all the timetables are met, intercontinental ballistic missiles will always be a “danger to the world as long as they are on launch-on-warning alert,” according to Frank N. von Hippel, senior research physicist and professor of public and international affairs emeritus with Princeton University’s Program on Science and Global Security.

The risk of a false alarm is enough reason to “do away with the ICBMs altogether,” as he and others — presidents, retired commanders, and at least one secretary of defense, alike — have long campaigned to do. “An accidental launch is a major contributor to the overall probability of an all out nuclear war.”

That’s because a president would have no more than a few minutes to decide whether a threat is real or false. As President George Bush was famously quoted, that wouldn’t give him enough time to get “off the crapper.”

And once an ICBM is launched, there would be no way to stop it, von Hippel emphasized.

It’s not the weapons so much that are archaic, but the thinking behind them, according to Wilson of the Project on Government Oversight. ICBMs were born in a different age, as was the entire nuclear triad: “a Cold War relic that the military-industrial complex has worked overtime to retroactively justify.”

In the world of today, Wilson is skeptical that ICBMs will actually protect Americans. “Practically, these weapons are strategic dinosaurs.”………………………………………. https://inkstickmedia.com/does-the-us-need-new-plutonium-pits/—

March 9, 2024 Posted by Christina Macpherson | - plutonium, USA, weapons and war | Leave a comment

The reawakening of America’s nuclear dinosaurs

“The issue of plutonium pit aging is a Trojan horse for the nuclear weaponeers enriching themselves through a dangerous new arms race,” said Jay Coghlan, executive director of Nuclear Watch New Mexico, an anti-nuclear group based in Santa Fe. “Future pit production is not about maintaining the existing, extensively tested stockpile. Instead, it’s for deploying multiple new warheads on new intercontinental ballistic missiles.”

The risk of a false alarm is enough reason to “do away with the ICBMs altogether,……. “An accidental launch is a major contributor to the overall probability of an all out nuclear war.”

Are America’s plutonium pits too old to perform in the new Cold War? Or are new ones necessary?

by Alicia Inez Guzmán February 28, 2024

Sprinkled across five western states, in silos buried deep underground and protected by reinforced concrete, sit 400 intercontinental ballistic missiles. Each of those missiles is equipped with a single nuclear warhead. And each of those warheads is itself equipped with one hollow, grapefruit-sized plutonium pit, designed to trigger a string of deadly reactions.

All of those missiles are on “hair-trigger alert,” poised for hundreds of targets in Russia — any one of which could raze all of downtown Moscow and cause hundreds of thousands of casualties.

Except — what if it doesn’t? What if, in a nuclear exchange, the pit fizzles because it’s just too old? In that case, would the weapon be a total dud or simply yield but a fraction of its latent power?

Outwardly, at least, that’s the question driving a whole new era of plutonium pit production at Los Alamos National Laboratory (LANL) and the Savannah River Plutonium Processing Facility in South Carolina.

Plutonium is widely known as one the most exotic elements in the periodic table. Trace amounts of it have been identified in the earth’s crust, though all of what’s now used for America’s nuclear weapons is manmade. For decades, these pits were cast with plutonium and other materials at a breakneck pace, installed in warheads and strapped into missiles that were regularly upgraded and modernized in an escalating arms race with the Soviet Union. Plutonium pits were never intended to grow old and senescent.

“We never worried about aging,” said Siegfried Hecker, former director of LANL and one of the world’s leading plutonium experts. “Because bombs were supposed to be out there for a dozen years or so.”

It’s been almost 40 years since America’s Cold War pit factory at Rocky Flats near Denver was raided by FBI agents and closed due to environmental crimes — among them, releases of radioactive effluent into nearby waterways. In that time, pit production went largely dormant, the USSR collapsed, arms reductions treaties were signed, stockpiles reduced and underground testing ceased.

Now, as the nuclear industrial complex awakens from its long slumber, the resumption of plutonium pit production has emerged as a deeply polarizing and political act. Anti-nuclear activists have accused the federal government of exploiting the uncertainty around aging to jumpstart a nearly $60 billion dollar manufacturing program. They assert that the real reason America has resumed the production of pits is for the purpose of introducing a new generation of warheads for a new generation of missiles — the first of which is the Sentinel, one of the most complex and expensive programs in the history of the U.S. Air Force.

The Sentinel ICBM has the capability to carry three separate warheads, each with its own target. Earlier versions of America’s missiles could and did have such capabilities and the option has remained available, but with post-Cold War weapons reductions, the number of warheads per missile was also reduced — one warhead, one intercontinental ballistic missile. As the U.S., Russia and China barrel toward a new Cold War, the U.S. will likely eschew such a convention in a matter of years.

“The issue of plutonium pit aging is a Trojan horse for the nuclear weaponeers enriching themselves through a dangerous new arms race,” said Jay Coghlan, executive director of Nuclear Watch New Mexico, an anti-nuclear group based in Santa Fe. “Future pit production is not about maintaining the existing, extensively tested stockpile. Instead, it’s for deploying multiple new warheads on new intercontinental ballistic missiles.”

But to hear Hecker and his colleagues tell it, the question of pit aging is as scientifically vexing as it is political. Plutonium, to its most studied acolytes, borders almost on the mystical, its properties as capricious as the human body. It can be brittle or soft under some circumstances or turn to powder when heated in air. It can disintegrate at room temperature. It can bombard itself with radiation and mar its own internal lattice structure. It can even heal that damage within fractions of a second, if not over the course of several decades.

According to Glenn Seaborg, former chair of the Atomic Energy Commission and the chemist credited with first synthesizing the element for use in weapons, plutonium is “so unusual as to approach the unbelievable.”

This quality means that even the most knowledgeable experts are reluctant to commit themselves to anything definitive when it comes to a plutonium pit’s long-term prospects. Does it last 50 years? One hundred? Is it comparable to a human body, whose bones weaken and whose mind is vulnerable to dementia? Or is it actually impervious to entropy?

“It is difficult to quantify how much the properties of a plutonium pit will change over time,”…………………………………………………………………………………………..

Too big to fail”

The political machinations actually go back even further — to the 2010 concession that President Barack Obama made to a largely Republican bloc of Senators: arms control in exchange for a revival of the nuclear weapons complex.

………………….

the beginning of a new era, a tectonic modernization of America’s nuclear triad — land, sea and air — now projected to cost close to $2 trillion over the next 30 years. That’s roughly the GDP of Canada.

Plutonium pits, of course, represent only a small fraction of the cost. That mind-boggling figure reflects a total reimagining of the nation’s entire nuclear program, complete with brand new ballistic missile submarines, 400 new Sentinel intercontinental ballistic missiles, tactical aircrafts, underground silos and 800 nuclear warheads.

The Sentinel program alone — cost, $131 billion — is a juggernaut. “I think this program has become too big to fail for an entrenched part of the military-industrial-congressional complex,” said Geoff Wilson, an expert on federal defense spending at the Independent watchdog, Project on Government Oversight.

…………………………………………………………. America’s warheads have also been regularly surveilled since the late 1990s, leading even the most cautious scientists to vouch for their reliability. In 2000, Raymond Jeanloz — a professor of earth and planetary science and astronomy at University of California, Berkeley— found little evidence that defects in those warheads increased significantly with age. His statistical models, based on data culled from LANL and LLNL, showed that such defects, if any, accumulate at the glacial rate of one percent per quarter century…………………….

A new Cold War

In the unthinkable scenario that a Sentinel is deployed, it would propel like a rocket beyond earth’s atmosphere and into space. As it reached its apogee, the missile would shed all its pieces and the warheads would descend toward their intended targets, half a world away.

For now, though, the Sentinel is barely a reality. The program is so complex and vastly over budget that some in the arms control community are calling for its complete cancellation. Experts question such a missile’s ability to deter China without provoking Russia. Other critics consider the plan to build new weapons as a dangerous return to the policies of the Cold War.

As for the plutonium pits, LANL is behind by at least four years; Savannah River by at least six. Indeed, to meet the projected quota demanded for future weapons could take decades.

But even if all the timetables are met, intercontinental ballistic missiles will always be a “danger to the world as long as they are on launch-on-warning alert,” according to Frank N. von Hippel, senior research physicist and professor of public and international affairs emeritus with Princeton University’s Program on Science and Global Security.

The risk of a false alarm is enough reason to “do away with the ICBMs altogether,” as he and others — presidents, retired commanders, and at least one secretary of defense, alike — have long campaigned to do. “An accidental launch is a major contributor to the overall probability of an all out nuclear war.”…………………………. And once an ICBM is launched, there would be no way to stop it

March 4, 2024 Posted by Christina Macpherson | - plutonium, USA, weapons and war | Leave a comment