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in subjects: "Proliferation"

open access

Analysis of the Reuse of Uranium Recovered from the Reprocessing of Commercial LWR Spent Fuel

This report provides an analysis of the factors involved in the reuse of uranium recovered from commercial light-water-reactor (LWR) spent fuels (1) by reenrichment and recycling as fuel to LWRs and/or (2) by recycling directly as fuel to heavy-water-reactors (HWRs), such as the CANDU (registered trade name for the Canadian Deuterium Uranium Reactor). Reuse is an attractive alternative to the current Advanced Fuel Cycle Initiative (AFCI) Global Nuclear Energy Partnership (GNEP) baseline plan, w… more

Date: February 1, 2009

Creator: DelCul, Guillermo D; Trowbridge, Lee D; Renier, John-Paul; Ellis, Ronald James; Williams, Kent Alan; Spencer, Barry B et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Development of Research Infrastructure in Nevada for the Exploitation of Hyperspectral Image Data to Address Proliferation and Detection of Chemical and Biological Materials.

This research was to exploit hyperspectral reflectance imaging technology for the detection and mapping variability (clutter) of the natural background against which gases in the atmosphere are imaged. The natural background consists of landscape surface cover composed of consolidated rocks, unconsolidated rock weathering products, soils, coatings on rock materials, vegetation, water, materials constructed by humans, and mixtures of the above. Human made gases in the atmosphere may indicate ind… more

Date: December 31, 2007

Creator: Taranik, James V.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Nonaqueous reprocessing method for thorium-based fuels

A conceptual flow sheet for the pyrometallurgical reprocessing of thorium-based fuels has been presented which meets current concerns about nonproliferation and waste control. Preliminary results indicate the desired process streams, uranium/thorium and plutonium/thorium, can be obtained using actinide solubility differences in cadmium--magnesium alloys and that salt waste can be minimized by electrolyzing CaO produced during the reduction process and recycling the calcium. However, further opt… more

Date: January 1, 1979

Creator: Bates, J K; Jardine, L J & Krumpelt, M

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Annual report on the U. S. program of technical assistance to safeguards of the International Atomic Energy Agency (POTAS), January--December 1977

Major accomplishments are highlighted in the following six fields of IAEA safeguards: measurement technology, training, system studies, information processing, surveillance and containment, and support for field operations. (DLC)

Date: March 1, 1978

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Safeguards and nonproliferation aspects of a dry fuel recycling technology

Los Alamos National Laboratory undertook an independent assessment of the proliferation potentials and safeguardability of a dry fuel recycling technology, whereby spent pressurized-water reactor (PWR) fuels are used to fuel canadian deuterium uranium (CANDU) reactors. Objectives of this study included (1) the evaluation of presently available technologies that may be useful to safeguard technology options for dry fuel recycling (2) and identification of near-term and long-term research needs t… more

Date: May 1, 1993

Creator: Pillay, K. K. S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Fate of thymic lymphocytes. [/sup 125/IudR and /sup 3/HTdR tracer studies in mice]

Data are summarized from a number of studies on the fate of thymic lymphocytes. Results are reported from studies in mice in which /sup 125/IudR and /sup 3/HTdR were used as tracers to study the production, maturation, migration, and life span of thymic lymphocytes. It is pointed out that thymus-derived cells constitute the majority of recirculating lymphocytes and that peripheral, differentiated thymus-derived lymphocytes exhibit a number of immunological functions. 114 references.

Date: January 1, 1976

Creator: Laissue, J A; Chanana, A D; Cronkite, E P & Joel, D D

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Flow microfluorometric approaches to cell kinetics

We have presented in this report data obtained by FMF analysis of in vivo model tumor systems and the in vitro CHO cell culture system in an effort to demonstrate a few of the biological applications of flow systems, particularly for use in cell kinetics and cell growth studies. Flow systems are no longer viewed as laboratory novelty items or ''electronic gadgets,'' as they were referred to a decade or so ago. Experiments performed in laboratories throughout the world have provided credibility … more

Date: January 1, 1976

Creator: Crissman, H. A.; Kissane, R. J.; Oka, M. S.; Tobey, R. A. & Steinkamp, J. A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Inert Matrix Fuel Neutronic, Thermal-Hydraulic, and Transient Behavior in a Light Water Reactor

Currently, commercial power reactors in the United States operate on a once-through or open cycle, with the spent nuclear fuel eventually destined for long-term storage in a geologic repository. Since the fissile and transuranic (TRU) elements in the spent nuclear fuel present a proliferation risk, limit the repository capacity, and are the major contributors to the long-term toxicity and dose from the repository, methods and systems are needed to reduce the amount of TRU that will eventually r… more

Date: May 1, 2005

Creator: Carmack, Jon; Todoscow, Michael; Meyer, Mitchell K. & Pasamehmetoglu, Kemal O.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

The Integrated Waste Tracking Systems (IWTS) - A Comprehensive Waste Management Tool

The US Department of Energy (DOE) Idaho National Laboratory (INL) site located near Idaho Falls, ID USA, has developed a comprehensive waste management and tracking tool that integrates multiple operational activities with characterization data from waste declaration through final waste disposition. The Integrated Waste Tracking System (IWTS) provides information necessary to help facility personnel properly manage their waste and demonstrate a wide range of legal and regulatory compliance. As … more

Date: September 1, 2005

Creator: Anderson, Robert S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Neutronics Design of a Thorium-Fueled Fission Blanket for LIFE (Laser Inertial Fusion-based Energy)

The Laser Inertial Fusion-based Energy (LIFE) project at LLNL includes development of hybrid fusion-fission systems for energy generation. These hybrid LIFE engines use high-energy neutrons from laser-based inertial confinement fusion to drive a subcritical blanket of fission fuel that surrounds the fusion chamber. The fission blanket contains TRISO fuel particles packed into pebbles in a flowing bed geometry cooled by a molten salt (flibe). LIFE engines using a thorium fuel cycle provide poten… more

Date: March 8, 2010

Creator: Powers, J.; Abbott, R.; Fratoni, M.; Kramer, K.; Latkowski, J.; Seifried, J. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Leveraging U.S. nuclear weapons policy to advance U.S. nonproliferation goals : implications of major theories of international relations.

National policymakers are currently considering a dilemma of critical importance to the continued security of the United States: how can U.S. nuclear weapons policies be leveraged to benefit U.S. nuclear nonproliferation goals in the near-term, without sacrificing U.S. national security? In its role supporting U.S. nuclear weapons policy, Sandia National Laboratories has a responsibility to provide objective technical advice to support policy deliberations on this question. However, to best ful… more

Date: June 1, 2009

Creator: Walter, Andrew

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The secure, transportable, autonomous reactor (STAR): a small proliferation-resistant reactor system for developing countries

The Secure, Transportable, Autonomous Reactor (STAR), is an integrated concept for a small, proliferation-resistant nuclear power system capable of meeting the growing power demands of many regions of the developing world. The STAR approach builds on earlier work investigating the features required for implementation of such a system. The STAR approach includes establishing overall system requirements, conducting research into issues common to four reactor concepts (gas, liquid metal, light wat… more

Date: May 27, 1999

Creator: Brown, N W; Hassberger, J A & Smith, C F

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Modulation of lymphopoiesis. Comprehensive progress report, January 1, 1991--July 30, 1991

During the current project period we have demonstrated correspondence between animal models and in vitro models of modulated lymphopoiesis. Our finding that G-CSF, a growth factor for neutrophil granulocytes, suppresses lymphopoiesis in long term bone marrow cultures (LTBMC) has important implications both for understanding the regulatory mechanisms of hemopoiesis and for clinical use of recombinant growth factors that are beginning to be widely used for the treatment of a variety of diseases. … more

Date: December 31, 1991

Creator: Rosse, C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Stochastic Engine Final Report: Applying Markov Chain Monte Carlo Methods with Importance Sampling to Large-Scale Data-Driven Simulation

Accurate prediction of complex phenomena can be greatly enhanced through the use of data and observations to update simulations. The ability to create these data-driven simulations is limited by error and uncertainty in both the data and the simulation. The stochastic engine project addressed this problem through the development and application of a family of Markov Chain Monte Carlo methods utilizing importance sampling driven by forward simulators to minimize time spent search very large stat… more

Date: March 11, 2004

Creator: Glaser, R. E.; Johannesson, G.; Sengupta, S.; Kosovic, B.; Carle, S.; Franz, G. A. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Summary report of the screening process to determine reasonable alternatives for long-term storage and disposition of weapons-usable fissile materials

Significant quantities of weapons-usable fissile materials (primarily plutonium and highly enriched uranium) have become surplus to national defense needs both in the US and Russia. These stocks of fissile materials pose significant dangers to national and international security. The dangers exist not only in the potential proliferation of nuclear weapons but also in the potential for environmental, safety and health consequences if surplus fissile materials are not properly managed. As announc… more

Date: March 29, 1995

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Some thoughts on the nonproliferation of nuclear weapons

This paper discusses factors controlling the dissemination of nuclear technologies and especially fissile materials.

Date: May 1, 1996

Creator: N.H., Krikorian & Hawkins, H.T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Black Thunder Coal Mine and Los Alamos National Laboratory experimental study of seismic energy generated by large scale mine blasting

In an attempt to better understand the impact that large mining shots will have on verifying compliance with the international, worldwide, Comprehensive Test Ban Treaty (CTBT, no nuclear explosion tests), a series of seismic and videographic experiments has been conducted during the past two years at the Black Thunder Coal Mine. Personnel from the mine and Los Alamos National Laboratory have cooperated closely to design and perform experiments to produce results with mutual benefit to both orga… more

Date: December 31, 1996

Creator: Martin, R.L.; Gross, D.; Pearson, D.C.; Stump, B.W. & Anderson, D.P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Status report of propagation models: Middle East and North Africa (S5.3)

An improved understanding of the influence that tectonic structure has on regional seismic phases is needed to improve the current performance of regional discriminants and their transportability to the Middle East and North Africa. In the case that the crustal structure can be approximated by a flat layered laterally invariant medium, layer-cake reflectivity modeling can be used to obtain an accurate representation of regional phases. However, a laterally heterogeneous crust is just as common … more

Date: November 1, 1995

Creator: Schultz, C. A.; Patton, H. J. & Goldstein, P.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Cellophane sandwich explant system. [Tissue culture system]

No Description Available.

Date: January 1, 1975

Creator: Cole, R. & de Vellis, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

ANOLE Portable Radiation Detection System Field Test and Evaluation Campaign

Handheld, backpack, and mobile sensors are elements of the Global Nuclear Detection System for the interdiction and control of illicit radiological and nuclear materials. They are used by the U.S. Department of Homeland Security (DHS) and other government agencies and organizations in various roles for border protection, law enforcement, and nonproliferation monitoring. In order to systematically document the operational performance of the common commercial off-the-shelf portable radiation dete… more

Date: July 12, 2007

Creator: Hodge, Chris A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Economic analysis of nuclear power reactor dissemination to less developed nations with implications for nuclear proliferation

An economic model is applied to the transfer of nuclear-power reactors from industrialized nations to the less developed nations. The model includes demand and supply factors and predicts the success of US nonproliferation positions and policies. It is concluded that economic forces dominate the transfer of power reactors to less developed nations. Our study shows that attempts to either restrict or promote the spread of nuclear-power technology by ignoring natural economic incentives would hav… more

Date: September 1, 1979

Creator: Gustavson, R.L. & Howard, J.S. II

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Nuclear Materials Management and Safeguards System (NMMSS). Revision 1

This paper describes the Nuclear Materials Management and Safeguards System (NMMSS) which is sponsored by the Department of Energy and the Nuclear Regulatory Commission. The system serves national security and program management interests, and international interests in the programs for the peaceful application of nuclear energy and non-proliferation of nuclear weapons. Within the scope of the NMMSS are found all nuclear materials applied and controlled under United States law and related inter… more

Date: December 31, 1991

Creator: Jacobsen, S. E.; Matthews, W. B. III; McKamy, E. D. & Pedigo, R. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Nevada Test Site-Directed Research and Development FY 2010 Annual Report

This annual report of the Site-Directed Research and Development (SDRD) program represents the highly significant R&D accomplishments conducted during fiscal year 2010. This year was noteworthy historically, as the Nevada Test Site was renamed to the Nevada National Security Site (NNSS). This change not only recognizes how the site's mission has evolved, but also heralds a future of new challenges and opportunities for the NNSS. In many ways, since its inception in 2002, the SDRD program ha… more

Date: April 4, 2011

Creator: Howard Bender, comp.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The Non-Proliferation Experiment recorded at the Pinedale. Seismic research facility

The Non-Proliferation Experiment was recorded by five different seismic stations operated by Sandia National Laboratories at the Pinedale Seismic Research Facility, approximately 7.60 from the Nevada Test Site. Two stations are different versions of the Deployable Seismic Verification System developed by the Department of Energy to provide seismic data to verify compliance with a Comprehensive Test Ban Treaty. Vault and borehole versions of the Designated Seismic Stations also recorded the even… more

Date: June 1, 1994

Creator: Carr, D. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department