Stockpile stewardship

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A Mk. 21 reentry vehicle is subjected to a wall of fire to determine how its aging components would react if used today. Peacekeeper Stockpile Stewardship.jpg
A Mk. 21 reentry vehicle is subjected to a wall of fire to determine how its aging components would react if used today.

Stockpile stewardship refers to the United States program of reliability testing and maintenance of its nuclear weapons without the use of nuclear testing.

Contents

Because no new nuclear weapons have been developed by the United States since 1992, [1] even its youngest weapons are at least 30 years old (as of 2023). Aging weapons can fail or act unpredictably in a number of ways: the high explosives that compress their fissile material can chemically degrade, their electronic components can suffer from decay, their radioactive plutonium/uranium cores are potentially unreliable, and the isotopes used by thermonuclear weapons may be chemically unstable as well. [2]

Since the United States has also not tested nuclear weapons since 1992, [3] this leaves the task of its stockpile maintenance resting on the use of simulations (using non-nuclear explosives tests and supercomputers, among other methods) and applications of scientific knowledge about physics and chemistry to the specific problems of weapons aging (the latter method is what is meant when various agencies refer to their work as "science-based"). It also involves the manufacture of additional plutonium "pits" to replace ones of unknown quality, and finding other methods to increase the lifespan of existing warheads and maintain a credible nuclear deterrent.

Most work for stockpile stewardship is undertaken at United States Department of Energy national laboratories, mostly at Los Alamos National Laboratory, Sandia National Laboratories, Lawrence Livermore National Laboratory, the Nevada Test Site, and Department of Energy productions facilities, which employ around 27,500 personnel and cost billions of dollars per year to operate.

Stockpile Stewardship and Management Program

The Stockpile Stewardship and Management Program is a United States Department of Energy program to ensure that the nuclear capabilities of the United States are not eroded as nuclear weapons age. It costs more than $4 billion annually [4] to test nuclear weapons and build advanced science facilities, such as the National Ignition Facility (NIF). Such facilities have been deemed necessary under the program since President Bill Clinton signed the Comprehensive Test Ban Treaty (CTBT) in 1996, [4] [5] The US Senate never ratified the CTBT. President Obama initiated a broad effort to modernize U.S. nuclear forces, which the Congressional Budget Office estimates will require approximately $494 billion to complete. [6]

Facilities

The stockpile stewardship program is supported by the following experimental facilities: [7]

The data produced by the experiments carried out in these facilities is used in combination with the Advanced Simulation and Computing Program. [7]

See also

Related Research Articles

<span class="mw-page-title-main">Los Alamos National Laboratory</span> Laboratory near Santa Fe, New Mexico

Los Alamos National Laboratory is one of the sixteen research and development laboratories of the United States Department of Energy (DOE), located a short distance northwest of Santa Fe, New Mexico, in the American southwest. Best known for its central role in helping develop the first atomic bomb, LANL is one of the world's largest and most advanced scientific institutions.

Lawrence Livermore National Laboratory (LLNL) is a federal research facility in Livermore, California, United States. The lab was originally established as the University of California Radiation Laboratory, Livermore Branch in 1952 in response to the detonation of the first atomic bomb by the Soviet Union during the Cold War. It later became autonomous in 1971 and was designated a national laboratory in 1981.

<span class="mw-page-title-main">United States Department of Energy</span> U.S. government department regulating energy production and nuclear material handling

The United States Department of Energy (DOE) is an executive department of the U.S. federal government that oversees U.S. national energy policy and manages the research and development of nuclear power and nuclear weapons in the United States. The DOE oversees the U.S. nuclear weapons program, nuclear reactor production for the United States Navy, energy-related research, and domestic energy production and energy conservation.

<span class="mw-page-title-main">Sandia National Laboratories</span> United States research lab

Sandia National Laboratories (SNL), also known as Sandia, is one of three research and development laboratories of the United States Department of Energy's National Nuclear Security Administration (NNSA). Headquartered in Kirtland Air Force Base in Albuquerque, New Mexico, it has a second principal facility next to Lawrence Livermore National Laboratory in California and a test facility in Waimea, Kauai, Hawaii. Sandia is owned by the U.S. federal government but privately managed and operated by National Technology and Engineering Solutions of Sandia, a wholly owned subsidiary of Honeywell International.

<span class="mw-page-title-main">National Ignition Facility</span> American nuclear fusion institute

The National Ignition Facility (NIF) is a laser-based inertial confinement fusion (ICF) research device, located at Lawrence Livermore National Laboratory in Livermore, California, United States. NIF's mission is to achieve fusion ignition with high energy gain. It achieved the first scientific breakeven controlled fusion experiment on December 5, 2022, with an energy gain factor of 1.5. It supports nuclear weapon maintenance and design by studying the behavior of matter under the conditions found within nuclear explosions.

Sandia Base was the principal nuclear weapons installation of the United States Department of Defense from 1946 to 1971. It was located on the southeastern edge of Albuquerque, New Mexico. For 25 years, the top-secret Sandia Base and its subsidiary installation, Manzano Base, carried on the atomic weapons research, development, design, testing, and training commenced by the Manhattan Project during World War II. Fabrication, assembly, and storage of nuclear weapons was also done at Sandia Base. The base played a key role in the United States nuclear deterrence capability during the Cold War. In 1971 it was merged into Kirtland Air Force Base.

<span class="mw-page-title-main">United States Department of Energy National Laboratories</span> Laboratories owned by the United States Department of Energy

The United States Department of Energy National Laboratories and Technology Centers is a system of facilities and laboratories overseen by the United States Department of Energy (DOE) for scientific and technological research. Sixteen of the seventeen DOE national laboratories are federally funded research and development centers administered, managed, operated and staffed by private-sector organizations under management and operating (M&O) contract with DOE.

<span class="mw-page-title-main">Advanced Simulation and Computing Program</span>

The Advanced Simulation and Computing Program is a super-computing program run by the National Nuclear Security Administration, in order to simulate, test, and maintain the United States nuclear stockpile. The program was created in 1995 in order to support the Stockpile Stewardship Program. The goal of the initiative is to extend the lifetime of the current aging stockpile.

<span class="mw-page-title-main">W80 (nuclear warhead)</span> Nuclear weapon

The W80 is a low to intermediate yield two-stage thermonuclear warhead deployed by the U.S. enduring stockpile with a variable yield ("dial-a-yield") of 5 or 150 kilotonnes of TNT.

<span class="mw-page-title-main">W84</span> Nuclear weapon

The W84 is an American thermonuclear warhead initially designed for use on the BGM-109G Gryphon Ground Launched Cruise Missile (GLCM).

<span class="mw-page-title-main">Mark 4 nuclear bomb</span> Air-dropped Nuclear fission weapon

The Mark 4 nuclear bomb was an American implosion-type nuclear bomb based on the earlier Mark 3 Fat Man design, used in the Trinity test and the bombing of Nagasaki. With the Mark 3 needing each individual component to be hand-assembled by only highly trained technicians under closely controlled conditions, the purpose of the Mark 4 was to produce an atomic weapon as a practical piece of ordnance. The Mark 4 Mod 0 entered the stockpile starting March 19, 1949 and was in use until 1953. With over 500 units procured, the Mark 4 was the first mass-produced nuclear weapon.

The Reliable Replacement Warhead (RRW) was a proposed new American nuclear warhead design and bomb family that was intended to be simple, reliable and to provide a long-lasting, low-maintenance future nuclear force for the United States. Initiated by the United States Congress in 2004, it became a centerpiece of the plans of the National Nuclear Security Administration (NNSA) to remake the nuclear weapons complex.

The Dual-Axis Radiographic Hydrodynamic Test Facility (DARHT) is a facility at Los Alamos National Laboratory which is part of the Department of Energy's stockpile stewardship program. It uses two large X-ray machines to record three-dimensional interior images of materials. In most experiments, materials undergo hydrodynamic shock to simulate the implosion process in nuclear bombs and/or the effects of severe hydrodynamic stress. The tests are described as "full-scale mockups of the events that trigger the nuclear detonation". The powerful pulsed X-ray beams allow for an ultra-fast motion picture to be constructed showing the details of the process being studied in three dimensions. The tests are often compared with computer simulations to help improve the accuracy of the computer code. Such testing falls under the category of sub-critical testing.

<span class="mw-page-title-main">John C. Browne</span> American physicist

John C. Browne is an American physicist.

The National Nuclear Security Administration (NNSA) is a United States federal agency responsible for safeguarding national security through the military application of nuclear science. NNSA maintains and enhances the safety, security, and effectiveness of the U.S. nuclear weapons stockpile; works to reduce the global danger from weapons of mass destruction; provides the United States Navy with safe and effective nuclear propulsion; and responds to nuclear and radiological emergencies in the United States and abroad.

<span class="mw-page-title-main">Los Alamos Neutron Science Center</span>

The Los Alamos Neutron Science Center (LANSCE), formerly known as the Los Alamos Meson Physics Facility (LAMPF), is one of the world's most powerful linear accelerators. It is located in Los Alamos National Laboratory in New Mexico in Technical Area 53. It was the most powerful linear accelerator in the world when it was opened in June 1972. The technology used in the accelerator was developed under the direction of nuclear physicist Louis Rosen. The facility is capable of accelerating protons up to 800 MeV. Multiple beamlines allow for a variety of experiments to be run at once, and the facility is used for many types of research in materials testing and neutron science. It is also used for medical radioisotope production.

<span class="mw-page-title-main">Ed Moses (physicist)</span>

Edward Moses is an American physicist and is the former president of the Giant Magellan Telescope Organization. He is a past principal associate director for the National Ignition Facility & Photon Science Directorate, where he led the California-based NIF, the largest experimental science facility in the US and the world's most energetic laser, that hopes to demonstrate the first feasible example of usable nuclear fusion.

<span class="mw-page-title-main">Area 27 (Nevada National Security Site)</span>

Area 27 is a division of the Nevada National Security Site. It occupies approximately 49 square miles (130 km2) in the south-central portion of the NNSS. A portion of Area 27 was originally known as Area 410.

<span class="mw-page-title-main">Renovation of the nuclear weapon arsenal of the United States</span> Military program

The renovation of the nuclear weapon arsenal of the United States is the modernization, refurbishment and rebuilding of the nuclear arsenal of the United States of America.

References

  1. "About the Global Governance Monitor". Council on Foreign Relations . Archived from the original on 2010-03-21. Retrieved 2021-08-15.
  2. "Stockpile Stewardship and Management - United States Nuclear Forces". GlobalSecurity.org. April 28, 2005. Retrieved 2009-10-24.
  3. Kyl, John (October 21, 2009). "Why We Need to Test Nuclear Weapons". Wall Street Journal . Moreover, unlike other nations, the U.S. has not conducted a nuclear-weapons test since 1992; it has not designed a new warhead since the 1980s or built one since the 1990s. It has reduced its nuclear-weapons stockpile by 75% since the end of the Cold War and 90% since the height of the Cold War.
  4. 1 2 Masco, Joseph (2006). The nuclear borderlands: the Manhattan Project in post-Cold War New Mexico (paperback ed.). Princeton University Press. p. 78. ISBN   978-0-691-12077-5.
  5. Mitchell, Alison (September 25, 1996). "Clinton, at U.N., Signs Treaty Banning All Nuclear Testing". New York Times . Retrieved 2009-10-24. President Clinton signed a treaty today that would ban all nuclear weapons testing and called on world leaders to take further steps to limit weapons of mass destruction.
  6. "Projected Costs of U.S. Nuclear Forces, 2019 to 2028 | Congressional Budget Office".
  7. 1 2 National Nuclear Security Administration, November 2011 Quarterly SSP Experiment Summary Archived 2013-03-07 at the Wayback Machine