NUCLEAR WEAPONS Action Needed to Address the W80-4 Warhead Program’S Schedule Constraints
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Heater Element Specifications Bulletin Number 592
Technical Data Heater Element Specifications Bulletin Number 592 Topic Page Description 2 Heater Element Selection Procedure 2 Index to Heater Element Selection Tables 5 Heater Element Selection Tables 6 Additional Resources These documents contain additional information concerning related products from Rockwell Automation. Resource Description Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1 Provides general guidelines for installing a Rockwell Automation industrial system. Product Certifications website, http://www.ab.com Provides declarations of conformity, certificates, and other certification details. You can view or download publications at http://www.rockwellautomation.com/literature/. To order paper copies of technical documentation, contact your local Allen-Bradley distributor or Rockwell Automation sales representative. For Application on Bulletin 100/500/609/1200 Line Starters Heater Element Specifications Eutectic Alloy Overload Relay Heater Elements Type J — CLASS 10 Type P — CLASS 20 (Bul. 600 ONLY) Type W — CLASS 20 Type WL — CLASS 30 Note: Heater Element Type W/WL does not currently meet the material Type W Heater Elements restrictions related to EU ROHS Description The following is for motors rated for Continuous Duty: For motors with marked service factor of not less than 1.15, or Overload Relay Class Designation motors with a marked temperature rise not over +40 °C United States Industry Standards (NEMA ICS 2 Part 4) designate an (+104 °F), apply application rules 1 through 3. Apply application overload relay by a class number indicating the maximum time in rules 2 and 3 when the temperature difference does not exceed seconds at which it will trip when carrying a current equal to 600 +10 °C (+18 °F). -
Weapons Summary Final 5.30.Indd
Workshop on U.S. Nuclear Weapons Stockpile Management Summary Report November 10, 2011 Summary Report Workshop on U.S. Nuclear Weapons Stockpile Management November 10, 2011 Sponsored by the american association for the advancement of Science, the hudson institute center for political- Military analysis and the Union of concerned Scientists Acknowledgments the center for Science, technology, and Security policy (cStSp) at the american association for the advancement of Science (AAAS) gratefully acknowledges support from the carnegie corporation of New york and the John D. and catherine t. Macarthur Foundation. also, the Union of concerned Scientists (UcS) wishes to thank the colombe Foundation, the David and katherine Moore Family Foundation, inc., the ploughshares Fund, and the prospect hill Foundation for their sustaining support. summaRy RepoRt: WoRkShop oN U.S. N UcleaR Weapons Stockpile Ma NageMeNt | i Introduction on November 10, 2011, the center for Science, technology, and Security policy at the american association for the advancement of Science (AAAS), the hudson institute center for political- Military analysis and the Union of concerned Scientists (UcS) hosted a workshop to discuss the future of the Department of energy’s stockpile management program.1 the meeting was unclassified and off the record.t o allow free discussion, it was carried out under the chatham house Rule in which statements made during the meeting (such as those reported here) can be cited but not attributed to individual speakers. in addition to those from -
CMRR Backgrounder 4 25 12.P65
The CMRR-NuclearTHE CMRR-NUCLEAR Facility: FACILITY 1 Why a Delay Makes Sense BACKGROUNDER APRIL 2012 LISBETH GRONLUND & STEPHEN YOUNG Executive Summary Looking ahead two decades, we find that the only plau- sible need to increase pit production capacity above the cur- In its FY2013 budget request, the Obama administration rent level is to support the upcoming life extension programs announced a delay of at least five years in the construction (LEP) for the W78 and W88 warheads—if they use newly built of a proposed new facility at the Los Alamos National Labo- pits. (A LEP could simply refurbish the existing warhead and ratory (LANL)—the Chemistry and Metallurgy Research use the existing pit, or could use an existing pit from another Replacement-Nuclear Facility warhead type.) However, even in this (CMRR-NF). Our analysis finds case, an annual production capacity of There will be no adverse effects that there will be no adverse effects 40-45 pits would be adequate, and this of delaying construction. More- of delaying construction. could be accomplished without build- over, there is no clear need for the Moreover, there is no clear need ing a new CMRR-NF. If the United CMRR-NF as currently proposed. for the CMRR-NF as currently States reduced its arsenal below 3,500 Delaying construction will also al- proposed. weapons over the next few decades, low the National Nuclear Security an even lower annual production ca- Administration (NNSA) to fully pacity could be sufficient. assess alternatives to building To date, NNSA has not made a CMRR-NF and to take into account forthcoming changes decision about whether it will use new pits for the W78 and to U.S. -
Explosive Weapon Effectsweapon Overview Effects
CHARACTERISATION OF EXPLOSIVE WEAPONS EXPLOSIVEEXPLOSIVE WEAPON EFFECTSWEAPON OVERVIEW EFFECTS FINAL REPORT ABOUT THE GICHD AND THE PROJECT The Geneva International Centre for Humanitarian Demining (GICHD) is an expert organisation working to reduce the impact of mines, cluster munitions and other explosive hazards, in close partnership with states, the UN and other human security actors. Based at the Maison de la paix in Geneva, the GICHD employs around 55 staff from over 15 countries with unique expertise and knowledge. Our work is made possible by core contributions, project funding and in-kind support from more than 20 governments and organisations. Motivated by its strategic goal to improve human security and equipped with subject expertise in explosive hazards, the GICHD launched a research project to characterise explosive weapons. The GICHD perceives the debate on explosive weapons in populated areas (EWIPA) as an important humanitarian issue. The aim of this research into explosive weapons characteristics and their immediate, destructive effects on humans and structures, is to help inform the ongoing discussions on EWIPA, intended to reduce harm to civilians. The intention of the research is not to discuss the moral, political or legal implications of using explosive weapon systems in populated areas, but to examine their characteristics, effects and use from a technical perspective. The research project started in January 2015 and was guided and advised by a group of 18 international experts dealing with weapons-related research and practitioners who address the implications of explosive weapons in the humanitarian, policy, advocacy and legal fields. This report and its annexes integrate the research efforts of the characterisation of explosive weapons (CEW) project in 2015-2016 and make reference to key information sources in this domain. -
The Plutonium Challenge-Stockpile Stewardship
Plutonium Overview The Plutonium Challenge Stockpile stewardship hallenging as it may be to understand and mitigate the problems of plutonium aging, by far the most difficult problem we face today is Cthe aging of our technical staff. Because plutonium science is enormously complex, we are just now beginning to understand it at a fundamental level. Our approach has therefore been largely empirical. But experience rests with the practitioners, and unfortunately, these practitioners are aging. We are in danger of losing their expertise and advice before we develop a more fundamental un- derstanding of plutonium—one that can more easily be taught and sustained over time. The plutonium pit is at the heart of the bomb. Fabrication of the first pits dur- ing the Manhattan Project was a tour de force. In 1944 and 1945, when gram and kilogram quantities of plutonium became available, this metal was found to be at odds not only with itself but also with everyone who touched it. Just enough was learned about this mysterious new element that the chemists and metallurgists were able to reduce the reactor product to metal. They could subsequently purify it, alloy it (so they could stabilize it and press it into shape), coat it (so they could handle it), and keep it together long enough before the plutonium bomb exploded at Trinity and Nagasaki. Over the following 50 years, Los Alamos scientists and many other scientists 22 around the world tried to decipher the mysteries of plutonium. Fortunately, many Los Alamos of the great academics recruited to Los Alamos during the Manhattan Project kept Met Lab, University an affiliation with the Laboratory. -
The Maintenance of a Capable, Credible
he maintenance of a capable, size of the deployed strategic arsenal B61 nuclear gravity bomb, carried by credible nuclear deterrent shrinks and the US reviews its nuclear the B-52 and B-2 bomber fleets. seems to have consensus gov- requirements. In the near future, officials want to Ternmental support. Defense and Energy Department lead- consolidate the number of warheads to Despite heavy investment in the nu- ers want to streamline and standardize the curb costs and accommodate an evolving clear mission over the last few years, Air maintenance of the nation’s warheads—a concept of nuclear deterrence, which Force and senior defense officials say process that has long been unpredictable may be far different from the policies much work lies ahead for the nation’s and irregular, according to a senior USAF and assumptions that dominated the Cold stockpile of nuclear warheads. official working in the Air Staff’s nuclear War. The task is to bring the nuclear Not long ago, ambitious plans were deterrence shop. weapons complex—the nation’s nuclear on the books for a new nuclear earth- warheads and the laboratories and facili- penetrating weapon and the first new- Consolidation ties charged with their care, testing, and build warhead since the Cold War. Then, “We are in a period of transition,” said maintenance—into the 21st century. Administrations changed and the budget Billy W. Mullins, the associate assistant As a result, over the coming decade- crunch hit. chief of staff for strategic deterrence plus, the National Nuclear Security In the aftermath of the New START and nuclear integration on the Air Staff. -
The Benefits of Moving to an All-W87 ICBM Force the NNSA Is Proposing
The Benefits of Moving to an All-W87 ICBM Force The NNSA is proposing to replace the W78 ICBM warhead with a new W87-1 warhead using a “W87- like” pit. A better alternative Replacing the 200 deployed W78s with the some of the 340 W87s in storage would bring several benefits: 1. Enhanced safety—much sooner: A major feature of the W87-1 is that it would use insensitive high explosives (IHE). As NNSA states in its report W78 Replacement Program (W87-1): Cost Estimates and Insensitive High Explosives: “Replacing the conventional high explosives (CHE) in the current W78 warhead with IHE is the single most significant weapon system change that improves the warhead’s safety and security.” But the W87 also uses IHE and could be deployed now, not in several decades. 2. Less demanding pit production schedule: The W87-1 would use new plutonium pits, which requires the NNSA to start up and then quickly ramp up its pit production from the current zero (and none since 2013) to 80 per year by 2030. As the NNSA states, this will be “challenging.” The alternative would obviate or significantly delay the need to produce 80 pits by 2030. 3. More realistic schedule overall: The NNSA faces significant schedule challenges in producing the W87-1, as it states in the FY19 Stockpile Stewardship & Management Plan: “Production is predicated on all newly manufactured components and a nuclear material manufacturing modernization strategy that relies on large, multi-year investments in component and material capabilities.” 4. Reduced NNSA workload: The NNSA and the weapons complex are already struggling to manage five simultaneous major work programs on weapons in the stockpile while also building the UPF and trying to establish a pit production capacity. -
OSP11: Nuclear Weapons Policy 1967-1998
OPERATIONAL SELECTION POLICY OSP11 NUCLEAR WEAPONS POLICY 1967-1998 Revised November 2005 1 Authority 1.1 The National Archives' Acquisition Policy announced the Archive's intention of developing Operational Selection Policies across government. These would apply the collection themes described in the overall policy to the records of individual departments and agencies. 1.2 Operational Selection Policies are intended to be working tools for those involved in the selection of public records. This policy may therefore be reviewed and revised in the light of comments from users of the records or from archive professionals, the experience of departments in using the policy, or as a result of newly discovered information. There is no formal cycle of review, but comments would be welcomed at any time. The extent of any review or revision exercise will be determined according to the nature of the comments received. If you have any comments upon this policy, please e-mail records- [email protected] or write to: Acquisition and Disposition Policy Manager Records Management Department The National Archives Kew Richmond Surrey TW9 4DU 1.3 Operational Selection Policies do not provide guidance on access to selected records. 2 Scope 2.1 This policy relates to all public records on British nuclear weapons policy and development. The departments and agencies concerned are the Prime Minister’s Office, the Cabinet Office, the Foreign and Commonwealth Office (Security Policy Department, Defence Department, Atomic Energy and Disarmament Department, and Arms Control and Disarmament Department), HM Treasury (Defence and Material Department), the Department of Trade and Industry (Atomic Energy, and Export Control and Non-Proliferation Directorate), the Ministry of Defence (MOD), the Atomic Weapons Establishment (AWE) and the United Kingdom Atomic Energy Authority (UKAEA). -
JASON Letter Report on Pit Aging
UNCLASSIFIED Department of Energy ///A···~~' IIVA.~~4~ Under Secretary for Nuclear Security National Nuclear Security Administration Administrator, National Nuclear Security Administration Washington, DC 20585 April 06, 2020 The Honorable Deb Fischer Chairman, Subcommittee on Strategic Forces Committee on Armed Services United States Senate Washington, DC 20510 Dear Madam Chairman: This letter is provided in response to language within the Senate Energy and Water Development (SEWD) Committee report (S .R. 115-258) accompanying the Energy and Water Development Appropriations Bill, 2019. The provision directed the Department of Energy's National Nuclear Security Administration (DOE/NNSA) to enter into a contract with the JASON Defense Advisory Group to assess NNSA's efforts to understand plutonium aging. The report requested by the SEWD was too wide in scope for JASON to complete during its 2019 Summer Study. NNSA, JASON, and SEWD staff agreed to divide the study into two phases: • Phase One: Perform a 2019 JASON Summer Study that would generate a letter report covering updates since the prior JASON study on plutonium aging, Pit Lifetime, delivered in 2006. • Phase Two: Assess the need for the full study, and if deemed necessary and timely, perform a more detailed, multi-year JASON study. NNSA concurs with the findings, observations, and recommendations of JASON's Phase One report, Pit Aging. NNSA recognizes that there is continued uncertainty in assessing performance of older pits due to radioactive decay of the plutonium, and is committed to a variety of risk mitigation options, including placing higher priority on studies of plutonium aging and its effect on performance. The NNSA strategy is a combination of reusing existing legacy pits and also replacement with newly manufactured pits. -
The Reliable Replacement Warhead Program and the Life Extension Program
Order Code RL33748 Nuclear Warheads: The Reliable Replacement Warhead Program and the Life Extension Program Updated December 3, 2007 Jonathan Medalia Specialist in National Defense Foreign Affairs, Defense, and Trade Division Nuclear Warheads: The Reliable Replacement Warhead Program and the Life Extension Program Summary Current U.S. nuclear warheads were deployed during the Cold War. The National Nuclear Security Administration (NNSA) maintains them with a Life Extension Program (LEP). NNSA questions if LEP can maintain them indefinitely on grounds that an accretion of minor changes introduced in replacement components will inevitably reduce confidence in warhead safety and reliability over the long term. Congress mandated the Reliable Replacement Warhead (RRW) program in 2004 “to improve the reliability, longevity, and certifiability of existing weapons and their components.” Since then, Congress has specified more goals for the program, such as increasing safety, reducing the need for nuclear testing, designing for ease of manufacture, and reducing cost. RRW has become the principal program for designing new warheads to replace current ones. The program’s first step was a design competition. The winning design was selected in March 2007. If the program continues, NNSA would advance the design of the first RRW, assess its technical feasibility, and estimate cost and schedule in FY2008; start engineering development by FY2010; and produce the first deployable RRW between FY2012 and FY2016. Congressional actions on the FY2008 national defense authorization bills (H.R. 1585, S. 1547) and energy and water appropriations bills (H.R. 2641, S. 1751) have called this schedule into question. For details, see CRS Report RL32929, The Reliable Replacement Warhead Program: Background and Current Developments, which provides background and tracks legislation and developments. -
Weapon Physics Division
-!! Chapter XV WEAPON PHYSICS DIVISION Introduction 15.1 At the time of its organization in August 1944, the Weapon Physics or G Division (G for gadget, code for weapon) was given a directive to carry out experiments on the critical assembly of active materials, to de- vise methods for the study of the implosion, and to exploit these methods to gain information about the implosion. In April 1945, the G Division directive was extended to fnclude the responsibility for the design and procurement of the hnplosion tamper, as well as the active core. In addition to its primary work with critical assemblies and implosion studies, G Division undertook the design and testing of an implosion initiator and of electric detonators for the high explosive. The Electronics Group was transferred from the Experi- mental Physics Division to G Division, and the Photographic Section of the Ordnance Division became G Divisionts Photographic Group. 15.2 The initial organization of the division, unchanged during the year which this account covers, was as follows: G-1 Critical Assemblies O. R. Frisch G-2 The X-Ray Method L. W. Parratt G-3 The Magnetic Method E. W. McMillan G-4 Electronics W. A. Higginbotham G-5 The Betatron Method S. H. Neddermeyer G-6 The RaLa Method B. ROSSi G-7 Electric Detonators L. W. Alvarez G-8 The Electric Method D. K. Froman G-9 (Absorbed in Group G-1) G-10 Initiator Group C. L. Critchfield G-n Optics J. E. Mack - 228 - 15.3 For the work of G Division a large new laboratory building was constructed, Gamma Building. -
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SIX DECADES OF GUIDED MUNITIONS AND BATTLE NETWORKS: PROGRESS AND PROSPECTS Barry D. Watts Thinking Center for Strategic Smarter and Budgetary Assessments About Defense www.csbaonline.org Six Decades of Guided Munitions and Battle Networks: Progress and Prospects by Barry D. Watts Center for Strategic and Budgetary Assessments March 2007 ABOUT THE CENTER FOR STRATEGIC AND BUDGETARY ASSESSMENTS The Center for Strategic and Budgetary Assessments (CSBA) is an independent, nonprofit, public policy research institute established to make clear the inextricable link between near-term and long- range military planning and defense investment strategies. CSBA is directed by Dr. Andrew F. Krepinevich and funded by foundations, corporations, government, and individual grants and contributions. This report is one in a series of CSBA analyses on the emerging military revolution. Previous reports in this series include The Military-Technical Revolution: A Preliminary Assessment (2002), Meeting the Anti-Access and Area-Denial Challenge (2003), and The Revolution in War (2004). The first of these, on the military-technical revolution, reproduces the 1992 Pentagon assessment that precipitated the 1990s debate in the United States and abroad over revolutions in military affairs. Many friends and professional colleagues, both within CSBA and outside the Center, have contributed to this report. Those who made the most substantial improvements to the final manuscript are acknowledged below. However, the analysis and findings are solely the responsibility of the author and CSBA. 1667 K Street, NW, Suite 900 Washington, DC 20036 (202) 331-7990 CONTENTS ACKNOWLEGEMENTS .................................................. v SUMMARY ............................................................... ix GLOSSARY ………………………………………………………xix I. INTRODUCTION ..................................................... 1 Guided Munitions: Origins in the 1940s............. 3 Cold War Developments and Prospects ............