Search Results

Advanced search parameters have been applied.
open access

Ion exchange technology assessment report

Description: In the execution of its charter, the SRS Ion Exchange Technology Assessment Team has determined that ion exchange (IX) technology has evolved to the point where it should now be considered as a viable alternative to the SRS reference ITP/LW/PH process. The ion exchange media available today offer the ability to design ion exchange processing systems tailored to the unique physical and chemical properties of SRS soluble HLW's. The technical assessment of IX technology and its applicability to th… more
Date: January 1, 1992
Creator: Duhn, E. F.
Partner: UNT Libraries Government Documents Department
open access

Criticality experiments with mixed oxide fuel pin arrays in plutonium-uranium nitrate solution

Description: A series of critical experiments was completed with mixed plutonium-uranium solutions having a Pu/(Pu + U) ratio of approximately 0.22 in a boiler tube-type lattice assembly. These experiments were conducted as part of the Criticality Data Development Program between the United States Department of Energy (USDOE) and the Power Reactor and Nuclear Fuel Development Corporation (PNC) of Japan. A complete description of the experiments and data are included in this report. The experiments were perf… more
Date: August 1, 1988
Creator: Lloyd, R.C. (Pacific Northwest Lab., Richland, WA (United States)) & Smolen, G.R. (Oak Ridge National Lab., TN (United States))
Partner: UNT Libraries Government Documents Department
open access

Environmental monitoring at Argonne National Laboratory. Annual report, 1981

Description: The results of the environmental monitoring program at Argonne National Laboratory for 1981 are presented and discussed. To evaluate the effect of Argonne operations on the environment, measurements were made for a variety of radionuclides in air, surface water, soil, grass, bottom sediment, and milk; for a variety of chemical constituents in air, surface water, and Argonne effluent water; and of the environmental penetrating radiation dose. Sample collections and measurements were made at the … more
Date: March 1, 1982
Creator: Golchert, N.W.; Duffy, T.L. & Sedlet, J.
Partner: UNT Libraries Government Documents Department
open access

Environmental monitoring at the Lawrence Livermore National Laboratory. 1981 annual report

Description: This report gives methods and results of the 1981 radiation monitoring program at LLL for both radioactive and non-radioactive contamination from gaseous and liquid effluents. Off-site monitoring includes various radionuclides but especially tritium in the ecosystems. (PSB)
Date: March 11, 1982
Creator: Auyong, M.; Griggs, K.S. & Buddemeier, R.W.
Partner: UNT Libraries Government Documents Department
open access

Pyrochemical multiplicity counter development

Description: Impure plutonium-bearing materials from pyrochemical processes often display both significant self-multiplication and variable ({alpha},n) reaction rates. Standard neutron coincidence counting techniques usually fail to accurately measure these materials. Neutron multiplicity counters measure the third moment of the neutron multiplicity distribution and thus make it possible to deduce the fertile plutonium mass of a sample even when both the self-multiplication and the ({alpha},n) reaction rate… more
Date: January 1, 1991
Creator: Langner, D. G.; Dytlewski, N. & Krick, M. S.
Partner: UNT Libraries Government Documents Department
open access

Sediment and radionuclide transport in rivers. Phase I: field sampling program during mean flow Cattaraugus and Buttermilk Creeks, New York

Description: A field sampling program was conducted on Cattaraugus and Buttermilk Creeks, New York during November and December 1977 to investigate the transport of radionuclides in surface waters as part of a continuing program to provide data for application and verification of Pacific Northwest Laboratory's (PNL) sediment and radionuclide transport model, SERATRA. Suspended sediment, bed sediment, and water samples were collected during mean flow conditions over a 45 mile reach of stream channel. Radiolo… more
Date: August 1, 1979
Creator: Ecker, R.M. & Onishi, Y.
Partner: UNT Libraries Government Documents Department
open access

High-temperature gas-cooled reactor technology development program. Annual progress report for period ending December 31, 1980

Description: Research activities are described concerning HTGR chemistry; fueled graphite development; prestressed concrete pressure vessel development; structural materials; HTGR graphite studies; HTR core evaluation; reactor physics; shielding; application and project assessments; and HTR Core Flow Test Loop studies.
Date: August 1, 1981
Partner: UNT Libraries Government Documents Department
open access

Adaptation of the IBM ECR (electric cantilever robot) robot to plutonium processing applications

Description: The changing regulatory climate in the US is adding increasing incentive to reduce operator dose and TRU waste for DOE plutonium processing operations. To help achieve that goal the authors have begun adapting a small commercial overhead gantry robot, the IBM electric cantilever robot (ECR), to plutonium processing applications. Steps are being taken to harden this robot to withstand the dry, often abrasive, environment within a plutonium glove box and to protect the electronic components again… more
Date: December 1, 1990
Creator: Armantrout, G. A.; Pedrotti, L. R. (Lawrence Livermore National Lab., CA (USA)); Halter, E. A. & Crossfield, M. (International Business Machines Corp., Armonk, NY (USA))
Partner: UNT Libraries Government Documents Department
open access

Study plan for conducting a section 316(a) demonstration: K-Reactor cooling tower, Savannah River Site

Description: The K Reactor at the Savannah River Site (SRS) began operation in 1954. The K-Reactor pumped secondary cooling water from the Savannah River and discharged directly to the Indian Grave Branch, a tributary of Pen Branch which flows to the Savannah River. During earlier operations, the temperature and discharge rates of cooling water from the K-reactor were up to approximately 70{degree}C and 400 cfs, substantially altering the thermal and flow regimes of this stream. These discharges resulted in… more
Date: February 1, 1991
Creator: Paller, M.H.
Partner: UNT Libraries Government Documents Department
open access

Transmission-corrected x-ray fluorescence analysis of uranium and plutonium solutions using a dual transmission source

Description: The energy-dispersive x-ray fluorescence analysis (XRFA) technique has been implemented at several spent nuclear fuel reprocessing facilities for nondestructive measurements of uranium and/or plutonium concentrations in process streams and product storage tanks. An important factor in these quantitative measurements is the absorption of the fluoresced x-rays by the solution matrix, which must be taken into account to accurately quantify the U or Pu concentrations. We describe a new, accurate me… more
Date: November 24, 1987
Creator: Ruhter, W. D. & Camp, D. C.
Partner: UNT Libraries Government Documents Department
open access

Atomic energy as an humane endeavor: Retrospective on its development

Description: This report is a speech delivered in Tokyo, Japan, by the author. It covers the historical aspects of atomic energy, from the pre-fission days until present. Such pioneer experiments conducted by O. Hahn, L. Meitner, and F. Strassmann to describe barium isotopes as the result of bombardment of uranium with neutrons are discussed. The author also discussed in detail the pre-war nuclear research at Berkeley, a leading center of nuclear research. Such important events as the synthesis and identifi… more
Date: January 1, 1989
Creator: Seaborg, G. T. & Stahlkopf, K. E.
Partner: UNT Libraries Government Documents Department
open access

Fission product iodine during early Hanford-Site operations: Its production and behavior during fuel processing, off-gas treatment and release to the atmosphere

Description: The Hanford Environmental Dose Reconstruction (HEDR) Project was established to estimate the radiological dose impact that Hanford Site operations may have made on the local and regional population. This impact is estimated by examining operations involving radioactive materials that were conducted at the Hanford Site from the startup of the first reactor in 1944 to the present. HEDR Project work is divided among several technical tasks. One of these tasks, Source Terms, is designed to develop … more
Date: May 1, 1991
Creator: Burger, L.L.
Partner: UNT Libraries Government Documents Department
open access

A three-dimensional PDQ benchmarking comparison with the Advanced Test Reactor measurement data

Description: Flux wire measurements recorded during operation of the Advanced Test Reactor (ATR) were used to validate a three-dimensional (3D) PDQ model developed for the ATR physics analysis in the updated Final Safety Analysis Report (FSAR). The 3D PDQ benchmark analysis utilized the flux synthesis method as well as the explicit method in solving for the spatial flux distribution in the core. Measured data used for comparison were X-Y specific powers in flux wire monitors positioned at the core midplane … more
Date: January 1, 1991
Creator: Kim, S. S. & Judd, J. L.
Partner: UNT Libraries Government Documents Department
open access

Plutonium well logging with the photoneutron uranium exploration system

Description: The Los Alamos National Laboratory prototype photoneutron uranium exploration system was recently demonstrated at the Hanford site near Richland, Washington, for Rockwell-Hanford Operations (Rockwell). The demonstration determined the field performance capabilities of the uranium exploration system for in situ, downhole measurements of transuranic waste concentrations. The uranium exploration system is indeed capable of detecting plutonium in the test wells at the waste sites investigated. The … more
Date: September 1, 1982
Creator: Baker, M.P. & Marks, T.
Partner: UNT Libraries Government Documents Department
open access

Integral decay-heat measurements and comparisons to ENDF/B--IV and V

Description: Results from recent integral decay-power experiments are presented and compared with summation calculations. The experiments include the decay power following thermal fission of /sup 233/U, /sup 235/U, and /sup 239/Pu. The summation calculations use ENDF/B-IV decay data and yields from Versions IV and V. Limited comparisons of experimental ..beta.. and ..gamma.. spectra with summation calculations using ENDF/B-IV are included. Generalized least-squares methods are applied to the recent /sup 235… more
Date: May 22, 1978
Creator: England, T. R.; Schenter, R. E. & Schmittroth, F.
Partner: UNT Libraries Government Documents Department
open access

Code for internal dosimetry (CINDY): Part 1, Conceptual representation

Description: The computer code CINDY (Computerized Internal Dosimetry Software Package) has been developed by Pacific Northwest Laboratory to address the Department of Energy (DOE) Order 5480.11 by providing the capabilities to calculate organ dose equivalents and effective dose equivalents using the approach contained in International Commission on Radiological Protection (ICRP) Publication 30. The code assists in the interpretation of bioassay data, the evaluation of committed and calendar-year doses from… more
Date: October 1990
Creator: Strenge, D. L.; Peloquin, R. A.; Sula, M. J. & Johnson, J. R.
Partner: UNT Libraries Government Documents Department
open access

Technical basis for internal dosimetry at Hanford

Description: The Hanford Internal Dosimetry Program, administered by Pacific Northwest Laboratory for the US Department of Energy, provides routine bioassay monitoring for employees who are potentially exposed to radionuclides in the workplace. This report presents the technical basis for routine bioassay monitoring and the assessment of internal dose at Hanford. The radionuclides of concern include tritium, corrosion products (/sup 58/Co, /sup 60/Co, /sup 54/Mn, and /sup 59/Fe), strontium, cesium, iodine, … more
Date: April 1, 1989
Creator: Sula, M.J.; Carbaugh, E.H. & Bihl, D.E.
Partner: UNT Libraries Government Documents Department
open access

Thermal reactor design for a neutron scattering source facility

Description: The purpose of this paper is to present conclusions drawn from preliminary neutronic calculations and to present a possible reactor design configuration capable of meeting the above thermal flux level, flux location, and lifetime requirements. (JDB)
Date: January 1, 1985
Creator: Worley, B. A.; Difilippo, F. C. & Vondy, D. R.
Partner: UNT Libraries Government Documents Department
open access

Radiochemical analyses of soil and vegetation samples taken from the Hanford environs, 1971--1976

Description: Soil and vegetation have routinely been collected on the Hanford Site and surrounding environs as one method of monitoring radionuclide concentrations potentially attributable to Hanford operations. With the exception of a few locations, the data indicate that Hanford operations have made no significant contribution to existing radionuclide concentrations in soil and vegetation. Most of the activity seen in the samples can be attributed to natural causes or worldwide atmospheric fallout. The fe… more
Date: June 1, 1977
Creator: Miller, M. L.; Fix, J. J. & Bramson, P. E.
Partner: UNT Libraries Government Documents Department
open access

Environmental monitoring report on the status of ground water beneath the Hanford Site, January--December 1976. [/sup 60/Co, /sup 106/Ru, /sup 3/H, beta particles]

Description: Data collected during 1976 describe the movement of the major plumes (..beta.., /sup 3/H and NO/sub 3//sup -/) that respond to the influences of groundwater flow, ionic dispersion and radioactive decay. The total beta plume, which has been essentially stagnant in recent years, is starting to recede. However, detailed comprehensive analysis of water from within this plume indicates that some highly mobile ionic species may be present. These species, which include /sup 60/Co and /sup 106/Ru, occu… more
Date: April 1, 1977
Creator: Myers, D. A.; Fix, J. J. & Raymond, J. R.
Partner: UNT Libraries Government Documents Department
open access

Health and Safety Laboratory environmental quarterly, December 1, 1976--March 1, 1977

Description: Separate abstracts were prepared for four sections of this report that gives data on fallout radioactivity in environmental samples from throughout the world, Pb content in surface air samples, Pu deposits at the Rocky Flats plant, and chemical effects of SF/sub 6/ and Freon-II in the stratosphere. (CH)
Date: April 1, 1977
Creator: Hardy, E. P. Jr.
Partner: UNT Libraries Government Documents Department
open access

An assessment of criticality safety at the Department of Energy Rocky Flats Plant, Golden, Colorado, July--September 1989

Description: This is a report on the 1989 independent Criticality Safety Assessment of the Rocky Flats Plant, primarily in response to public concerns that nuclear criticality accidents involving plutonium may have occurred at this nuclear weapon component fabrication and processing plant. The report evaluates environmental issues, fissile material storage practices, ventilation system problem areas, and criticality safety practices. While no evidence of a criticality accident was found, several recommendat… more
Date: 1989-10~
Partner: UNT Libraries Government Documents Department
Back to Top of Screen