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Lithium Isotope Separation by Electrolysis

Description: Two approaches to lithium isotope separation have been followed in this research and are described and compared. One is electrolysis in non-aqueous systems at high cathode efficiency. The other is electrolysis in aqueous systems with anode depolarizers.
Date: September 4, 1950
Creator: Kennedy, Joseph W
Partner: UNT Libraries Government Documents Department

PACIFIC NORTHWEST LABORATORY DIVISION OF ISOTOPE DEVELOPMENT PROGRAMS QUARTERLY REPORT: FEBRUARY - APRIL 1970

Description: This report provides detailed and timely information on the results of the isotopic fuels program and related research being conducted at the Pacific Northwest Laboratory by Battelle-Northwest for the U.S. Atomic Energy Commission. This report covers the 3-month period, February through April 1970.
Date: May 1, 1970
Creator: Hansen, J. E.
Partner: UNT Libraries Government Documents Department

EXAMINATION OF THE FEASIBILITY FOR DEMONSTRATION AND USE OF RADIOLUMINESCENT LIGHTS FOR ALASKAN REMOTE RUNWAY LIGHTING

Description: This report examines the feasibility of radioluminescent light applications for rural Alaskan airports. The work presented in this report covers four tasks: State of the Art Evaluation of Radioluminescent Lights, Environmental, Radiological, and Regulatory Evaluations, Engineering Evaluations, and Demonstration Plan Development.
Date: January 1, 1984
Creator: Jensen, G.; Perrigo, L.; Leonard, L. & Hegdal, L
Partner: UNT Libraries Government Documents Department

Improved Production and Separation Technologies for Non-standard PET Radionuclides

Description: Brief summary of activity issues, concerns, successes: Project 1 is completed. We have optimized plating parameters with the new target bodies and slanted target plating system. The target station has been mounted on the end of the beamline, service lines have been nstalled to allow for helium and water cooling. We have routinely produced copper-64 using the new slanted target system in conjunction with our automated system. In project 2, we successfully fabricated and tested microfluidic extraction devices made out of two organic solvent-resistant polymers, thiolene and SIFEL. Initially, we developed analytical and computational models to describe the extraction process, and used the model to design the microfluidic devices. Then we optimized the microfabrication procedures to manufacture microreactors, followed by optimization of the operational parameters to obtain a stable aqueous-organic interface, which is critical for efficient extraction. When we tested the thiolene devices for extraction of copper-64, we observed very low extraction efficiencies (less than 5%) due to adhesion of copper to thiolene. However, we observed very high extraction efficiencies with SIFEL devices (greater than 95%), which are due to the high interfacial area for extraction and shorter diffusion lengths.
Date: December 1, 2012
Creator: Welch, Michael J. & Lapi, Suzanne
Partner: UNT Libraries Government Documents Department

IN-LINE CHEMICAL SENSOR DEPLOYMENT IN A TRITIUM PLANT

Description: The Savannah River Tritium Plant (TP) relies on well understood but aging sensor technology for process gas analysis. Though new sensor technologies have been brought to various readiness levels, the TP has been reluctant to install technologies that have not been tested in tritium service. This gap between sensor technology development and incorporating new technologies into practical applications demonstrates fundamental challenges that exist when transitioning from status quo to state-of-the-art in an extreme environment such as a tritium plant. These challenges stem from three root obstacles: 1) The need for a comprehensive assessment of process sensing needs and requirements; 2) The lack of a pick-list of process-compatible sensor technologies; and 3) The need to test technologies in a tritium-contaminated process environment without risking production. At Savannah River, these issues are being addressed in a two phase project. In the first phase, TP sensing requirements were determined by a team of process experts. Meanwhile, Savannah River National Laboratory sensor experts identified candidate technologies and related them to the TP processing requirements. The resulting roadmap links the candidate technologies to actual plant needs. To provide accurate assessments of how a candidate sensor technology would perform in a contaminated process environment, an instrument demonstration station was established within a TP glove box. This station was fabricated to TP process requirements and designed to handle high activity samples. The combination of roadmap and demonstration station provides the following assets: � Creates a partnership between the process engineers and researchers for sensor selection, maturation, and insertion, � Selects the right sensors for process conditions � Provides a means for safely inserting new sensor technology into the process without risking production, and � Provides a means to evaluate off normal occurrences where and when they occur. This paper discusses the process to identify and demonstrate new ...
Date: October 2, 2013
Creator: Tovo, L.; Wright, J.; Torres, R. & Peters, B.
Partner: UNT Libraries Government Documents Department

NNSA TRITIUM SUPPLY CHAIN

Description: Savannah River Site plays a critical role in the Tritium Production Supply Chain for the National Nuclear Security Administration (NNSA). The entire process includes: • Production of Tritium Producing Burnable Absorber Rods (TPBARs) at the Westinghouse WesDyne Nuclear Fuels Plant in Columbia, South Carolina • Production of unobligated Low Enriched Uranium (LEU) at the United States Enrichment Corporation (USEC) in Portsmouth, Ohio • Irradiation of TPBARs with the LEU at the Tennessee Valley Authority (TVA) Watts Bar Reactor • Extraction of tritium from the irradiated TPBARs at the Tritium Extraction Facility (TEF) at Savannah River Site • Processing the tritium at the Savannah River Site, which includes removal of nonhydrogen species and separation of the hydrogen isotopes of protium, deuterium and tritium.
Date: August 21, 2013
Creator: Wyrick, Steven; Cordaro, Joseph; Founds, Nanette & Chambellan, Curtis
Partner: UNT Libraries Government Documents Department

Novel Cyclotron-Based Radiometal Production

Description: Accomplishments: (1) Construction of prototype solution target for radiometal production; (2) Testing of prototype target for production of following isotopes: a. Zr-89. Investigation of Zr-89 production from Y-89 nitrate solution. i. Defined problems of gas evolution and salt precipitation. ii. Solved problem of precipitation by addition of nitric acid. iii. Solved gas evolution problem with addition of backpressure regulator and constant degassing of target during irradiations. iv. Investigated effects of Y-89 nitrate concentration and beam current. v. Published abstracts at SNM and ISRS meetings; (3) Design of 2nd generation radiometal solution target. a. Included reflux chamber and smaller target volume to conserve precious target materials. b. Included aluminum for prototype and tantalum for working model. c. Included greater varicosities for improved heat transfer; and, (4) Construction of 2nd generation radiometal solution target started.
Date: October 31, 2013
Creator: DeGrado, Timothy R.
Partner: UNT Libraries Government Documents Department

List of ERDA radioisotope customers with summary of radioisotope shipments FY 1977 (plus the transition quarter)

Description: The thirteenth edition of the radioisotope customer list gives ERDA's (now DOE) FY-1977 and transition quarter radioisotope production and distribution activities by its facilities at Argonne National Laboratory; Pacific Northwest Laboratory; Brookhaven National Laboratory; Hanford Engineering Development Laboratory; Idaho Operations Office; Los Alamos Scientific Laboratory; Mound Laboratory; Oak Ridge National Laboratory; Savannah River Laboratory; and United Nuclear Industries, Inc. The information is divided into four sections. Sect. I is an alphabetical list of domestic and foreign customers and their addresses. Sect. II is an alphabetical list of isotopes that are cross-referenced to customer numbers and divided into the domestic and foreign categories. Sect. III is an alphabetical list of states and countries, and is also cross-referenced to customer numbers, indicating geographical concentrations of isotope users. Sect. IV summarizes the FY-1977 radioisotope shipment activities of laboratories in a comprehensive table providing an alphabetical listing of the isotopes and their suppliers. The shipments, quantities, and dollars are broken down for each isotope under the domestic, foreign, and project (ERDA facilities) categories, and the total figures for each isotope are also provided.
Date: July 1, 1978
Creator: Simmons, J.L. (comp.)
Partner: UNT Libraries Government Documents Department

Advanced Neutron Source: The designer's perspective

Description: The Advanced Neutron Source (ANS) is a research facility based on a 350 MW beam reactor, to be brought into service at the Oak Ridge National Laboratory at the end of the century. The primary objective is to provide high-flux neutron beams and guides, with cold, thermal, hot, and ultra-cold neutrons, for research in many fields of science. Secondary objectives include isotopes production, materials irradiation and activation analysis. The design of the ANS is strongly influenced by the historical development of research and power reactor concepts, and of the regulatory infrastructure of the Department of Energy (DOE) and the Nuclear Regulatory Commission (NRC). Current trends in reactor safety also impact the climate for the design of such a reactor.
Date: January 1, 1990
Creator: Peretz, F.J.
Partner: UNT Libraries Government Documents Department

Cobalt Source Calibration

Description: The data obtained from these tests determine the dose rate of the two cobalt sources in SRTC. This testing used chemical dosimetry to measure the dose rate of a radioactive source.
Date: October 25, 1999
Creator: Barnes, M.
Partner: UNT Libraries Government Documents Department

Characteristics of the 7-GeV Advanced Photon Source : a Guide for Users

Description: In this document we present the characteristics of the electromagnetic radiation from various types of sources on the 7-GeV Advanced Photon Source (APS) storage ring. The sources include bending magnets, undulators, and wigglers. The characteristics are compared with those of other synchrotron sources when operated at their design specifications. The influence of positron beam size on the on-axis brilliance is discussed, along with the power distribution from these sources. The goal of this document is to provide users with enough information on the characteristics of radiation from the APS storage ring so that experiments can be efficiently planned.
Date: February 1988
Creator: Shenoy, G. K.; Viccaro, P. J. & Mills, Dennis M.
Partner: UNT Libraries Government Documents Department

New spallation neutron sources, their performance and applications

Description: Pulsed spallation sources now operating in the world are at the KEK Laboratory in Japan (the KENS source), at Los Alamos National Laboratory (WNR) and at Argonne National Laboratory (IPNS), both the latter being in the US. The Intense Pulsed Neutron Source (IPNS) is currently the world's most intense source with a peak neutron flux of 4 x 10/sup 14/ n cm/sup -2/s/sup -1/ at a repetition rate of 30 Hz, and globally producing approx. 1.5 x 10/sup 15/ n/sec. Present pulsed sources are still relatively weak compared to their potential. In 1985 the Rutherford Spallation Neutron Source will come on line, and eventually be approx. 30 more intense than the present IPNS. Later, in 1986 the WNR/PSR option at Los Alamos will make that facility of comparable intensity, while a subcritical fission booster at IPNS will keep IPNS competitive. These new sources will expand the applications of pulsed neutrons but are still based on accelerators built for other scientific purposes, usually nuclear or high-energy physics. Accelerator physicists are now designing machines expressly for spallation neutron research, and the proton currents attainable appear in the milliamps. (IPNS now runs at 0.5 GeV and 14 ..mu..A). Such design teams are at the KFA Laboratory Julich, Argonne National Laboratory and KEK. Characteristics, particularly the different time structure of the pulses, of these new sources will be discussed. S
Date: January 1, 1985
Partner: UNT Libraries Government Documents Department

Free electron lasers for the XUV spectral region

Description: Using the system described, an electron storage ring with an undulator in a special bypass section, we can obtain high intensity coherent radiation by sending the beam through the undulator and using the FEL collective instability to produce radiation. Compared to other systems, such as an FEL oscillator or a transverse optical klystron, this system has the advantage that it does not
Date: January 1, 1984
Creator: Murphy, J.B. & Pellegrini, C.
Partner: UNT Libraries Government Documents Department

LOCA mitigation studies for the advanced neutron source: The inertial flow diode concept

Description: This paper documents a study of the consequences of loss of coolant accidents in the Advanced Neutron Source reactor, and it introduces the concept of an inertial flow diodes to mitigate the effect of large cold leg breaks. 2 refs., 1 fig.
Date: January 1, 1991
Creator: Khayat, M.I.; Perez, R.B. (Tennessee Univ., Knoxville, TN (USA)) & March-Leuba, J. (Oak Ridge National Lab., TN (USA))
Partner: UNT Libraries Government Documents Department

(International Collaboration on Advanced Neutron Sources)

Description: The International Collaboration on Advanced Neutron Sources was started about a decade ago with the purpose of sharing information throughout the global neutron community. The collaboration has been extremely successful in optimizing the use of resources, and the discussions are open and detailed, with reasons for failure shared as well as reasons for success. Although the meetings have become increasingly oriented toward pulsed neutron sources, many of the neutron instrumentation techniques, such as the development of better monochromators, fast response detectors and various data analysis methods, are highly relevant to the Advanced Neutron Source (ANS). I presented one paper on the ANS, and another on the neutron optical polarizer design work which won a 1989 R D-100 Award. I also gained some valuable design ideas, in particular for the ANS hot source, in discussions with individual researchers from Canada, Western Europe, and Japan.
Date: November 8, 1990
Creator: Hayter, J.B.
Partner: UNT Libraries Government Documents Department

FORMATION OF TRANSURANIUM ISOTOPES IN POWER REACTORS

Description: In recent years there has been an increased interest in the use of transuranium isctopes for special power applications. Moreover, as the civilian power reactor economy expands, a large quantity of such isotopes will be formed in reactors using slightly enriched uranium fuel and, more particularly, in reactors which recycle the higher isotopes they form. This report, consisting mainly of computer printouts, indicates the yields of transuranium isotopes from different fueling methods. Since water reactors will be the predominate type of power reactor for at least a decade, most of the values presented here are derived from simulated water reactors.
Date: January 1, 1966
Creator: Deonigi, D.E.
Partner: UNT Libraries Government Documents Department