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Natural convection in tunnels at Yucca Mountain and impact on drift seepage

Description: The decay heat from radioactive waste that is to be disposed in the once proposed geologic repository at Yucca Mountain (YM) will significantly influence the moisture conditions in the fractured rock near emplacement tunnels (drifts). Additionally, large-scale convective cells will form in the open-air drifts and will serve as an important mechanism for the transport of vaporized pore water from the fractured rock in the drift center to the drift end. Such convective processes would also impact… more
Date: April 15, 2010
Creator: Halecky, N.; Birkholzer, J.T. & Peterson, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of Thin Film Silicon Solar Cell Using Inkjet Printed Silicon and Other Inkjet Processes: Cooperative Research and Development Final Report, CRADA Number CRD-07-260

Description: The cost of silicon photovoltaics (Si-PV) can be greatly lowered by developing thin-film crystalline Si solar cells on glass or an equally lower cost substrate. Typically, Si film is deposited by thermal evaporation, plasma enhanced chemical vapor deposition, and sputtering. NREL and Silexos have worked under a CRADA to develop technology to make very low cost solar cells using liquid organic precursors. Typically, cyclopentasilane (CPS) is deposited on a glass substrate and then converted into… more
Date: April 1, 2012
Creator: Sopori, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Task 1 Steam Oxidation (NETL-US)

Description: Some conclusions are: (1) Increased flow rates can lower chromia activity in alloys with Ti and Mn - (a) Reduced chromia activity reduces equilibrium CrO{sub 2}(OH){sub 2}(g) vapor pressures; (2) Model is very sensitive to small decreases in chromia activity at the HP turbine - (a) Upstream partial saturation of the gas phase with CrO{sub 2}(OH){sub 2}(g) can become nearly or fully saturated at the HP turbine, (b) Can radically change breakaway oxidation times from less than a year to never hap… more
Date: April 28, 2011
Creator: Holcomb, G. R.; Tylczak, J. & R. Hu,
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessment of Geothermal Resource Potential at a High-Priority Area on the Utah Testing and Training Range–South (UTTR–S)

Description: Field investigations conducted during 2011 support and expand the conclusion of the original Preliminary Report that discovery of a viable geothermal system is possible in the northwestern part of the Utah Testing and Training Range-South (UTTR-S), referred to henceforth as Focus Area 1. The investigations defined the southward extent of the Wendover graben into and near Focus Area 1, enhanced the understanding of subsurface conditions, and focused further geothermal exploration efforts towards… more
Date: April 1, 2012
Creator: Richard P. Smith, PhD., PG; Robert P. Breckenridge, PhD. & Thomas R. Wood, PhD.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CASL L2 milestone report : VUQ.Y1.03, %22Enable statistical sensitivity and UQ demonstrations for VERA.%22

Description: The CASL Level 2 Milestone VUQ.Y1.03, 'Enable statistical sensitivity and UQ demonstrations for VERA,' was successfully completed in March 2011. The VUQ focus area led this effort, in close partnership with AMA, and with support from VRI. DAKOTA was coupled to VIPRE-W thermal-hydraulics simulations representing reactors of interest to address crud-related challenge problems in order to understand the sensitivity and uncertainty in simulation outputs with respect to uncertain operating and model… more
Date: April 1, 2011
Creator: Sung, Yixing (Westinghouse Electric Company LLC, Cranberry Township, PA); Adams, Brian M. & Witkowski, Walter R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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HEAVY ION FUSION SCIENCE VIRTUAL NATIONAL LABORATORY2nd QUARTER 2010 MILESTONE REPORTDevelop the theory connecting pyrometer and streak camera spectrometer data to the material properties of beam heatedtargets and compare to the data

Description: This milestone has been accomplished. We have extended the theory that connects pyrometer and streak spectrometer data to material temperature on several fronts and have compared theory to NDCX-I experiments. For the case of NDCX-I, the data suggests that as the metallic foils are heated they break into droplets (cf. HIFS VNL Milestone Report FY 2009 Q4). Evaporation of the metallic surface will occur, but optical emission should be directly observable from the solid or liquid surface of the fo… more
Date: April 1, 2010
Creator: More, R.M.; Barnard, J. J.; Bieniosek, F.M.; Henestroza, E.; Lidia, S. M. & Ni, P. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Update on the Aquifer/Wetlands Restoration Project at Utica, Nebraska, With Recommendations for Remapping of the Carbon Tetrachloride Contamination in Groundwater.

Description: In 1992-1993, Argonne National Laboratory investigated potential carbon tetrachloride contamination that might be linked to the former grain storage facility operated by the Commodity Credit Corporation (CCC) of the U.S. Department of Agriculture (USDA) at Utica, Nebraska. These initial studies identified carbon tetrachloride in a plume of contaminated groundwater, extending approximately 3,500 ft southeastward from the former CCC/USDA facility, within a shallow upper aquifer that had been used… more
Date: April 20, 2010
Creator: LaFreniere, L. M. & Division, Environmental Science
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Materials Performance in USC Steam Portland

Description: Goals of the U.S. Department of Energy's Advanced Power Systems Initiatives include power generation from coal at 60% efficiency, which requires steam conditions of up to 760 C and 340 atm, co-called advanced ultrasupercritical (A-USC) steam conditions. A limitation to achieving the goal is a lack of cost-effective metallic materials that can perform at these temperatures and pressures. Some of the more important performance limitations are high-temperature creep strength, fire-side corrosion r… more
Date: April 26, 2011
Creator: Holcomb, G.R.; Tylczak, J. & Hu, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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