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Evaluation of the photochemical production of hydrogen from solar energy

Description: The potential for utilizing solar energy through photochemical storage were investigated. Both water and nitrosyl chloride systems are examined. A comprehensive review of the literature led to the conclusion that many major questions must be answered before photochemical energy storage becomes a viable alternate means of exploiting solar energy.
Date: August 9, 1977
Creator: Heppert, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Method of electrode fabrication and an electrode for metal chloride battery

Description: A method of fabricating an electrode for use in a metal chloride battery and an electrode are provided. The electrode has relatively larger and more uniform pores than those found in typical electrodes. The fabrication method includes the steps of mixing sodium chloride particles selected from a predetermined size range with metal particles selected from a predetermined size range, and then rigidifying the mixture. The electrode exhibits lower resistivity values of approximately 0.5 {Omega}cm{s… more
Date: October 9, 1990
Creator: Bloom, I.D.; Nelson, P.A. & Vissers, D.R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Evaluation of selected chemical processes for production of low-cost silocon. (Phases I and II. ) Final report, October 9, 1975--July 9, 1978. Silicon Material Task, Low-Cost Solar Array Project

Description: The zinc reduction of silicon tetrachloride in a fluidized bed of seed particles to yield a granular product was studied along with several modifications of the thermal decomposition or hydrogen reduction of silicon tetraiodide. Although all contenders were believed to be capable of meeting the quality requirements of the LSA Project, it was concluded that only the zinc reduction of the chloride could be made economically feasible at a cost below $10/kg silicon (1975 dollars). Accordingly, subs… more
Date: July 9, 1978
Creator: Blocher, J.M. Jr. & Browning, M.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

60-inch annular pitch polisher for LASL's LASER-fusion effort

Description: The Antares laser will require that about 100 high-precision NaCl windows of 18-in. diameter be produced, maintained, and repaired. To aid the industry in achieving the required production rates, a polishing development program was undertaken by LASL's Laser Division in collaboration with the Air Force and International Laser Systems. The design and initial shakedown of the polishing machine is described. Preliminary results indicate the machine's design is sound, its operation is generally sim… more
Date: November 9, 1978
Creator: Williamson, Raymond
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A STRUCTURAL INTEGRITY EVALUATION OF THE TANK FARM WASTE TRANSFER SYSTEM

Description: Radioactive supernate, salt, and/or sludge wastes (i.e., high level wastes) are confined in 49 underground storage tanks at the Savannah River Site (SRS). The waste is transported between tanks within and between the F and H area tank farms and other facilities on site via underground and a limited number of aboveground transfer lines. The Department of Energy - Savannah River Operations Office (DOE-SR) performed a comprehensive assessment of the structural integrity program for the Tank Farm w… more
Date: March 9, 2006
Creator: Wiersma, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Inhibition of Chloride Induced Crevice Corrosion in Alloy 22 by Fluoride Ions

Description: Alloy 22 (N06022) is highly resistant to localized corrosion. Alloy 22 may be susceptible to crevice corrosion in pure chloride (Cl{sup -}) solutions under aggressive environmental conditions. The effect of the fluoride (F{sup -}) over the crevice corrosion induced by chloride ions is still not well established. The objective of the present work was to explore the crevice corrosion resistance of this alloy to different mixtures of fluorides and chlorides. Cyclic potentiodynamic polarization (CP… more
Date: October 9, 2005
Creator: Carranza, R M; Rodr?guez, M A & Rebak, R B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Effect of Soaking in Hot Saline Solution and Humid Atmosphere on the Passive Film Behavior of a Ni-Cr-Mo Alloy

Description: Alloy 22, a Ni-Cr-Mo alloy, is the candidate material for fabrication of canisters for disposal of high-level and spent nuclear fuel waste in the proposed Yucca Mountain repository in Nevada. This paper investigated the passive film behavior and corrosion properties on Alloy 22 as a function of soaking in hot, saline environments and in hot, humid atmospheres. Environmental parameters include potential, temperature, pH in chloride and multi-species solutions. Hot, humid exposures are planned fo… more
Date: June 9, 2006
Creator: Pharkya, P. & Payer, J.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Influence of Black Annealing Oxide Scale on the Anodic Behavior of Alloy 22

Description: The resistance of Alloy 22 (N06022) to localized corrosion, mainly crevice corrosion, has been extensively investigated in the last few years. The effect of influencing variables such as temperature, applied potential, chloride concentration and nitrate inhibitor concentration have been addressed previously. At this time, it was important to address the effect an oxide film or scale that forms during the high temperature annealing process or solution heat treatment (SHT) and its subsequent wate… more
Date: October 9, 2005
Creator: Rebak, R. B.; Etien, R. A.; Gordon, S. R. & Ilevbare, G. O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Spectroscopy and decay kinetics of Pr{sup 3+}-doped chloride crystals for 1300-nm optical amplifiers

Description: Several Pr{sup 3+}-doped chloride crystals have been tested spectroscopically for suitability as 1300-nm optical amplifiers operating on the {sup 1}G{sub 4} - {sup 3}H{sub 5} transition. {sup 1}G{sub 4} lifetimes are much longer than in fluoride hosts, ranging up to 1300 {mu}sec and suggesting a near-unity luminescence quantum yield. Emission spectra are typically broad (FWHM {approximately} 70 nm) and include the 1310-nm zero-dispersion wavelength of standard telecommunications fiber.
Date: March 9, 1995
Creator: Page, R.H.; Schaffers, K.I. & Wilke, G.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Environmentally Assisted Cracking of Commercial Ni-Cr-Mo Alloys - A Review

Description: Nickel-Chromium-Molybdenum alloys (Ni-Cr-Mo) are highly resistant to general corrosion, localized corrosion and environmentally assisted cracking (EAC). Cr acts as a beneficial element under oxidizing acidic conditions and Mo under reducing conditions. All three elements (Ni, Cr and Mo) act synergistically to provide resistance to EAC in environments such as hot concentrated chloride solutions. Ni-Cr-Mo alloys may suffer EAC in environments such as hot caustic solutions, hot wet hydrofluoric ac… more
Date: November 9, 2004
Creator: Rebak, R B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

BEHAVIOR OF MERCURY DURING DWPF CHEMICAL PROCESS CELL PROCESSING

Description: The Defense Waste Processing Facility has experienced significant issues with the stripping and recovery of mercury in the Chemical Processing Cell (CPC). The stripping rate has been inconsistent, often resulting in extended processing times to remove mercury to the required endpoint concentration. The recovery of mercury in the Mercury Water Wash Tank has never been high, and has decreased significantly since the Mercury Water Wash Tank was replaced after the seventh batch of Sludge Batch 5. S… more
Date: April 9, 2012
Creator: Zamecnik, J. & Koopman, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

General Chemistry Division quarterly report, October--December 1976

Description: Reported are: determination of imperfections on a laser spatial-filter lens; oxidation of U in O/sub 2/--N/sub 2/ mixtures; use of polarized x-rays to improve detection limits in energy-dispersive x-ray fluorescence analysis; detection of less than 1 ppT of organic compounds by laser-induced molecular fluorescence; a Stark-shift laser spectrometer; photoionization thresholds of Nd, Sm, Eu, Dy, and Er; response tests of chloride ion-selective electrodes; chemical analyses of explosive composites… more
Date: March 9, 1977
Creator: Harrar, J. E. & Lentzner, H. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Direct oxide reduction demonstration, small-scale studies

Description: This project was initiated to provide process design information to the Plutonium Recovery Project (PRP). Although direct oxide reduction (DOR) has been operated in a production mode both at the Rocky Flats Plant (now operated by EG G, Inc.) and Los Alamos National Laboratory, many aspects of the process are ill-defined. Because the PRP plans include significant DOR capability, a well-defined process should minimize capital cost and maximize productivity. Reduced radiation exposure may also be … more
Date: December 9, 1991
Creator: Long, J. L.; Santi, D. J.; Fisher, D. C. & Humiston, T. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The effect of chromate concentration on the repassivation of corroding aluminum

Description: Current density maps of anodically polarized pure aluminum in chloride solutions were measured and the effect of chromate/dichromate buffer additions monitored. The higher the polarized potential the more chromate was required to repassivate the corroding surface. Small pits repassivated easily, crevice corrosion events were the last to repassivate. Open circuit potential measurements showed the presence of meta-stable pitting at chloride concentrations of 0.3M. The lifetime and magnitude of th… more
Date: February 9, 1999
Creator: Jeffcoate, C. S.; Isaacs, H. S.; Hawkins, J. & Thompson, G. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Pretreatment applied engineering, corrosion assessment for tank materials: 1995 final report

Description: For sludge washing to be conducted in existing Hanford carbon steel tanks, there must be an assurance that the tanks will be safe from failure by pitting, stress-corrosion cracking or other failure processes when the corrosion inhibitors present in the waste are diluted during the sludge washing operation. Testing has been conducted previously to define safe operating regimes in concentrated waste environments and moderately dilute waste environments. Due to identification of unsafe operating r… more
Date: August 9, 1996
Creator: Maclean, G.T., Westinghouse Hanford
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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