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Radiological Monitoring Equipment For Real-Time Quantification Of Area Contamination In Soils And Facility Decommissioning

Description: The environmental restoration industry offers several sys¬tems that perform scan-type characterization of radiologically contaminated areas. The Idaho National Laboratory (INL) has developed and deployed a suite of field systems that rapidly scan, characterize, and analyse radiological contamination in surface soils. The base system consists of a detector, such as sodium iodide (NaI) spectrometers, a global positioning system (GPS), and an integrated user-friendly computer interface. This mobil… more
Date: September 1, 2005
Creator: Carpenter, M. V.; Roach, Jay A.; Giles, John R & Roybal, Lyle G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fuel Fabrication for Surrogate Sphere-Pac Rodlet

Description: Sphere-pac fuel consists of a blend of spheres of two or three different size fractions contained in a fuel rod. The smear density of the sphere-pac fuel column can be adjusted to the values obtained for light-water reactor (LWR) pellets (91-95%) by using three size fractions, and to values typical of the fast-reactor oxide fuel column ({approx}85%) by using two size fractions. For optimum binary packing, the diameters of the two sphere fractions must differ by at least a factor of 7 (ref. 3). … more
Date: July 19, 2005
Creator: Del Cul, G.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ultrahigh Sensitivity Heavy Noble Gas Detectors for Long-Term Monitoring and for Monitoring Air

Description: The primary objective of this research project is to develop heavy noble gas (krypton, xenon, and radon) detectors for (1) long-term monitoring of transuranic waste, spent fuel, and other uranium and thorium bearing wastes and (2) alpha particle air monitors that discriminate between radon emissions and other alpha emitters. DOE needs that are addressed by this project include improved long-term monitoring capability and improved air monitoring capability during remedial activities. Successful … more
Date: July 28, 2005
Creator: Valentine, John D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Impacts of Uranium and Thorium on the Defense Waste Processing Facility (DWPF) Viscosity Model

Description: The Defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS) vitrifies high level liquid waste (HLLW) into borosilicate glass for stabilization and permanent disposal. The viscosity of the borosilicate glass melt as a function of temperature is the single most important variable affecting the melt rate and pour ability of the glass. The viscosity determines the rate of melting of the raw feed, the rate of glass bubble release (foaming and fining), the rate of homogenization, th… more
Date: February 28, 2005
Creator: CAROL, JANTZEN
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DISSOLVED CONCENTRATION LIMITS OF RADIOACTIVE ELEMENTS

Description: The purpose of this study is to evaluate dissolved concentration limits (also referred to as solubility limits) of elements with radioactive isotopes under probable repository conditions, based on geochemical modeling calculations using geochemical modeling tools, thermodynamic databases, field measurements, and laboratory experiments. The scope of this activity is to predict dissolved concentrations or solubility limits for elements with radioactive isotopes (actinium, americium, carbon, cesiu… more
Date: July 13, 2005
Creator: Bernot, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

GAMMA-RAY CHARACTERIZATION OF THE U-SERIES INTERMEDIATE DAUGHTERS FROM SOIL SAMPLES AT THE PENA BLANCA NATURAL ANALOG, CHIHUAHUA, MEXICO

Description: The Pena Blanca natural analog is located in the Sierra Pena Blanca, approximately 50 miles north of Chihuahua City, Mexico. The Sierra Pena Blanca is composed mainly of ash-flow tuffs, and the uranium in the region is contained in the brecciated zones of these tuffs. The Pena Blanca site is considered a natural analog to the proposed Yucca Mountain Nuclear Waste Repository because they share similar characteristics of structure, volcanic lithology, tectonic activity, and hydrologic regime. One… more
Date: July 18, 2005
Creator: French, D.C.; Anthony, E.Y. & Goodell, P.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report: Understanding the Chemistry of the Actinides in High Level Waste Tank Systems: The Impact of Temperature on Hydrolysis and Complexation with Organics

Description: The solubility of CeO2 and ThO2 in aqueous NaNO3 solutions was studied as a function of pH and ionic strength, and the concentration of the organic ligands: citrate, EDTA, and oxalate. The main findings of the study are that these organic ligands increase the solubility of CeO2 markedly via the formation of complexes. On the other hand, the solubility of ThO2 was not affected by the presence of these ligands at levels of several hundred micromolar. These results have implications for the behavi… more
Date: May 5, 2005
Creator: Wood, Scott A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Portable Hand-Held Electrochemical Sensor for the Transuranics

Description: During the four-year period of the grant all of the goals of the originally proposed work were achieved, and some additional accomplishments are here reported. Two types of sensors were designed and built in the lab, capable of detecting uranium, plutonium and thorium at the 10 part-per-trillion level. The basis of both sensor types is a specially designed polymer having selective binding sites for actinyl ions of the form MO{sub 2}{sup 2+}(aq), where M is any actinide in the +6 oxidation state… more
Date: November 25, 2005
Creator: Dale D. Russell, William B. Knowlton, Ph.D. & Russel Hertzog, Ph.D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Rapid Column Extraction Method for Actinides and Sr-89/90 in Water Samples

Description: The SRS Environmental Laboratory analyzes water samples for environmental monitoring, including river water and ground water samples. A new, faster actinide and strontium 89/90 separation method has been developed and implemented to improve productivity, reduce labor costs and add capacity to this laboratory. This method uses stacked TEVA Resin{reg_sign}, TRU Resin{reg_sign} and Sr-Resin{reg_sign} cartridges from Eichrom Technologies (Darien, IL, USA) that allows the rapid separation of plutoni… more
Date: June 15, 2005
Creator: Maxwell, Sherrod, L., III
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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