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DEVELOPMENT OF VADOSE-ZONE HYDRAULIC PARAMETER VALUES

Description: Several approaches have been developed to establish a relation between the soil-moisture retention curve and readily available soil properties. Those relationships are referred to as pedotransfer functions. Described in this paper are the rationale, approach, and corroboration for use of a nonparametric pedotransfer function for the estimation of soil hydraulic-parameter values at the yucca Mountain area in Nevada for simulations of net infiltration. This approach, shown to be applicable for us… more
Date: January 21, 2008
Creator: PM, ROGERS
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Drilling Specifications: Well Installations in the 300 Area to Support PNNL’s Integrated Field-Scale Subsurface Research Challenge (IFC) Project

Description: Part of the 300 Area Integrated Field-Scale Subsurface Research Challenge (IFC) will be installation of a network of high density borings and wells to monitor migration of fluids and contaminants (uranium), both in groundwater and vadose zone, away from an surface infiltration plot (Figure A-1). The infiltration plot will be located over an area of suspected contamination at the former 300 Area South Process Pond (SPP). The SPP is located in the southeastern portion of the Hanford Site, within … more
Date: January 21, 2008
Creator: Bjornstad, Bruce N. & Vermeul, Vince R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Compiler-Enhanced Incremental Checkpointing for OpenMP Applications

Description: As modern supercomputing systems reach the peta-flop performance range, they grow in both size and complexity. This makes them increasingly vulnerable to failures from a variety of causes. Checkpointing is a popular technique for tolerating such failures, enabling applications to periodically save their state and restart computation after a failure. Although a variety of automated system-level checkpointing solutions are currently available to HPC users, manual application-level checkpointing r… more
Date: January 21, 2008
Creator: Bronevetsky, Greg; Marques, Daniel; Pingali, Keshav; Rugina, Radu & McKee, Sally A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Crack growth rates and fracture toughness of irradiated austenitic stainless steels in BWR environments.

Description: In light water reactors, austenitic stainless steels (SSs) are used extensively as structural alloys in reactor core internal components because of their high strength, ductility, and fracture toughness. However, exposure to high levels of neutron irradiation for extended periods degrades the fracture properties of these steels by changing the material microstructure (e.g., radiation hardening) and microchemistry (e.g., radiation-induced segregation). Experimental data are presented on the frac… more
Date: January 21, 2008
Creator: Chopra, O. K. & Shack, W. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cleanup Verification Package for the 118-B-1, 105-B Solid Waste Burial Ground

Description: This cleanup verification package documents completion of remedial action, sampling activities, and compliance criteria for the 118-B-1, 105-B Solid Waste Burial Ground. This waste site was the primary burial ground for general wastes from the operation of the 105-B Reactor and P-10 Tritium Separation Project and also received waste from the 105-N Reactor. The burial ground received reactor hardware, process piping and tubing, fuel spacers, glassware, electrical components, tritium process wast… more
Date: January 21, 2008
Creator: Capron, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Use of a Stochastic Model to Evaluate Uncertainty in a Performance Assessment at the Savannah River Site - 8120

Description: A significant effort has recently been initiated to address probabilistic issues within radiological Performance Assessments (PA's) conducted at the Savannah River Site (SRS). This effort is considered to be part of a continual process, as is the program of PA analysis and maintenance across the Department of Energy (DOE) complex. At SRS, findings in the initial probabilistic analysis of the Slit Trenches in the E-Area PA were built upon and improved in the later development of the probabilisti… more
Date: January 21, 2008
Creator: Hiergesell, R. A. & Taylor, G. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evidence for the incorporation of lead into barite from waste rock pile materials

Description: Because Pb is one of the most toxic elements and is found as a major contaminant in mining environments, this study aims to identify the distribution of this element in host phases issued from the alteration of mine wastes. The sampling location was a former mine near Oakland, California (USA). This mine was once a source of sulfide minerals from which sulfuric acid was made. The material discussed in this paper was collected in iron hardpans that were formed within the waste rock pile resultin… more
Date: January 21, 2008
Creator: COURTIN-NOMADE, ALEXANDRA; SOUBRAND-COLIN, MARILYNE; MARCUS, MATTHEW A. & FAKRA, SIRINE .C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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