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Chemical and thermal stability of refrigerant-lubricant mixture with metal

Description: This report presents completed sealed tube stability test results for the R-123/mineral oil mixture and preliminary results for seven of the eighteen contracted refrigerant-lubricant mixtures. The R-123 mixture was tested at 105, 150, and 175{degrees}C. The results obtained indicate that prolonged exposure to temperatures of about 150{degree}C and higher will lead to rapid chemical deterioration of the R-123/mineral oil system. Chlorotrifluoroethane (R-133a) and trifluoroethane (R-143a) have be… more
Date: March 31, 1992
Creator: Huttenlocher, D.F. (Spauschus Associates, Inc., Atlanta, GA (United States))
Item Type: Refine your search to only Report
open access

Resonance Raman and photophysical studies of transition metal complexes in solution and entrapped in zeolites

Description: We have obtained convincing evidence for localization of the optical electron on a single-ring fragment of a chelated bipyridine-like'' ligand (ie., pyridylpyrazine or 4-Methyl-bipyridine). In addition we have completed studies of Ru(bipyrazine){sub 3}{sup 2+} in aqueous sulfuric acid (0--98% by weight) and find clear evidence for sequential addition of six-protons to the six peripheral nitrogen atoms. Studies of zeolite-entrapped complexes are continuing and a series of homo- and heteroleptic … more
Date: March 31, 1992
Creator: Kincaid, J.R.
Item Type: Refine your search to only Report
open access

On the massless gap'' adjustment of detected energy for passive material in front of a calorimeter

Description: I have designed a correction scheme for energy losses in passive material in front of a calorimeter based on the massless gap'' idea. I use a flexible geometry model of a calorimeter design for SDC outside of a solenoidal coil made of aluminium cylinders of adjustable thickness. The signal from the first radiation length of active calorimetry is scaled dependent on the incoming and observed energies of the shower. A reasonable recovery of the resolution of an unobstructed calorimeter is achieve… more
Date: January 31, 1992
Creator: Trost, H.J.
Item Type: Refine your search to only Report
open access

The single electron chemistry of coals

Description: Depolymerization of coals at low temperatures may offer advantages over thermal bond cleavage. Because bond cleavage energies of radical cations are lower than the corresponding homolytic bond cleavage energies of the same bond, generation of radical cations in coal may make possible depolymerization at lower temperatures. We seek to investigate the above possibility using single molecules containing functional groups common in coals. Since the generation of a radical cation requires the remova… more
Date: January 31, 1992
Creator: Larsen, J. W. & Eskay, T. P.
Item Type: Refine your search to only Report
open access

LAPACK users' guide: Release 1. 0

Description: LAPACK is a transportable library of Fortran 77 subroutines for solving the most common problems in numerical linear algebra: systems of linear equations, linear least squares problems, eigenvalue problems and singular value problems. LAPACK is designed to supersede LINPACK and EISPACK, principally by restructuring the software to achieve much greater efficiency on vector processors, high-performance superscalar'' workstations, and shared-memory multi-processors. LAPACK also adds extra function… more
Date: January 31, 1992
Creator: Anderson, E.; Bai, Z.; Bischof, C.; Demmel, J.; Dongarra, J.; Du Croz, J. et al.
Item Type: Refine your search to only Report
open access

Advanced soluble hydroliquefaction and hydrotreating catalysts

Description: The purpose of the present program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. This approach should avoid problems related to surface area dependence, a two phase (surface- liquid) reaction system and, mass transport limitations.
Date: January 31, 1992
Creator: Laine, R.M. (Michigan Univ., Ann Arbor, MI (United States). Dept. of Materials Science and Engineering) & Stoebe, T. (Washington Univ., Seattle, WA (United States). Dept. of Materials Science and Engineering)
Item Type: Refine your search to only Report
open access

Rapid pressure swing absorption cleanup of post-shift reactor synthesis gas

Description: In order to increase the production rate of purified gas stream, a new hollow fiber module has been fabricated with more number of hollow fibers. A few experiments have also been carried out using a CO{sub 2}-N{sub 2} feed gas mixture and water as an absorbent in the new module. With the new module, it was possible to increase the production rate of purified gas by a significant amount while the cycle time for vacuum desorption was considerably reduced. Preparations are now being made to study … more
Date: January 31, 1992
Creator: Sirkar, K. K.; Majumdar, S. & Bhaumik, S.
Item Type: Refine your search to only Report
open access

A comparison of ROChem reverse osmosis and spiral wound reverse osmosis membrane modules

Description: Testing of the ROChem Disc Tube[reg sign] reverse osmosis (RO) module's performance on biologically active feed waters has been completed. Both the ROChem module (using Filmtec standard-rejection seawater membranes) and the Filmtec spiral-wound membrane module (using Filmtec high-rejection seawater membranes) were tested with stimulant solutions containing typical bacteria and metal hydroxide levels found in the F/H Effluent Treatment Facility (ETF) influent. Results indicate that the ROChem mo… more
Date: January 31, 1992
Creator: Siler, J. L.
Item Type: Refine your search to only Report
open access

Maintaining the uranium resources data system and assessing the 1991 US uranium potential resources

Description: The Energy Information Administration's (EIA) Uranium Resource Assessment Data (URAD) System contains information on potential resources (undiscovered) of uranium in the United States. The purpose of this report is: (1) to describe the work carried out to maintain and update the URAD system; (2) to assess the 1991 U.S. uranium potential resources in various cost categories; and (3) to describe the progress that has been made to automate the generation of the assessment reports and their subsequ… more
Date: December 31, 1992
Creator: McCammon, R. B. (Geological Survey, Reston, VA (United States)); Finch, W. I.; Grundy, W. D. & Pierson, C. T. (Geological Survey, Denver, CO (United States))
Item Type: Refine your search to only Report
open access

Revisions to the hydrogen gas generation computer model

Description: Waste Management Technology has requested SRTC to maintain and extend a previously developed computer model, TRUGAS, which calculates hydrogen gas concentrations within the transuranic (TRU) waste drums. TRUGAS was written by Frank G. Smith using the BASIC language and is described in the report A Computer Model of gas Generation and Transport within TRU Waste Drums (DP- 1754). The computer model has been partially validated by yielding results similar to experimental data collected at SRL and … more
Date: August 31, 1992
Creator: Jerrell, J.W.
Item Type: Refine your search to only Report
open access

Removal of deuterium from flowing nitrogen by SAES St 198

Description: Testing was conducted to investigate the ability of a metal getter, SAES St 198, to remove D[sub 2] from flowing nitrogen. This getter is being considered for applications involving removal of tritium at low concentrations from glovebox atmospheres and inert or nitrogen process streams. This document reports results from tests involving flow of 107 ppM D[sub 2] in nitrogen through a packed bed of St 198 getter granules (1.02 mm average dia) at a gas flow rate of 400 std. cm[sup 3][center dot]mi… more
Date: December 31, 1992
Creator: Nobile, A.
Item Type: Refine your search to only Report
open access

Advanced moisture sensor research and development

Description: During this period, testing of the system continued at the American Fructose (AF) plant in Dimmitt, Texas. Testing at the first two sites (dryer output and dryer input) was completed. Following the testing at the second site, the sensor was returned to the Southwest Research Institute (SwRI) laboratories for modifications and for fitting of the additional components required to allow sampling of the material to be measured at the third site. These modifications were completed during this report… more
Date: October 31, 1992
Creator: De Los Santos, A.
Item Type: Refine your search to only Report
open access

RTF glovebox stripper regeneration development

Description: Currently, the Replacement Tritium Facility (RTF) glovebox stripper system consists of a catalytic oxidation front end where trace tritium which may escape from the primary tritium process into the glovebox nitrogen system is oxidized to tritiated water. The tritiated water, along with normal water which may leak into the glovebox from the surrounding atmosphere, is then captured on a zeolite bed. Eventually, the zeolite bed becomes saturated with water and must be regenerated to remain effecti… more
Date: October 31, 1992
Creator: Birchenall, A.K.
Item Type: Refine your search to only Report
open access

[Physicochemical and microbiological factors influencing the bioavailability of organic contaminants in subsoils]

Description: We report progress in elucidating the microbiological variables important in determining the relative success of bacteria in utilizing soil-sorbed contaminants. Two bacterial species, Pseudomonas putida (ATCC 17484) and an Alcaligenes sp. isolated from petroleum contaminated soil are known to differ markedly in their ability to utilize soil-sorbed napthalene based on a kinetic comparison of their capability of naphthalene mineralization in soil-containing and soil-free systems. The kinetic anal… more
Date: December 31, 1992
Item Type: Refine your search to only Report
open access

SRP baseline hydrogeologic investigation: Aquifer characterization

Description: An investigation of the mineralogy and chemistry of the principal hydrogeologic units and the geochemistry of the water in the principal aquifers at Savannah River Site (SRS) was undertaken as part of the Baseline Hydrogeologic Investigation. This investigation was conducted to provide background data for future site studies and reports and to provide a site-wide interpretation of the geology and geochemistry of the Coastal Plain Hydrostratigraphic province. Ground water samples were analyzed f… more
Date: March 31, 1992
Creator: Strom, R. N. & Kaback, D. S.
Item Type: Refine your search to only Report
open access

MELMRK 2. 0: A description of computer models and results of code testing

Description: An advanced version of the MELMRK computer code has been developed that provides detailed models for conservation of mass, momentum, and thermal energy within relocating streams of molten metallics during meltdown of Savannah River Site (SRS) reactor assemblies. In addition to a mechanistic treatment of transport phenomena within a relocating stream, MELMRK 2.0 retains the MOD1 capability for real-time coupling of the in-depth thermal response of participating assembly heat structure and, furth… more
Date: May 31, 1992
Creator: Wittman, R.S. (ed.) (Westinghouse Savannah River Co., Aiken, SC (United States)); Denny, V. & Mertol, A. (Science Applications International Corp., Los Atlos, CA (United States))
Item Type: Refine your search to only Report
open access

Heavy duty gas turbine combustion tests with simulated low BTU coal gas

Description: There is an increasing industry interest in integrated gas turbine combined cycle plants in which coal gasifiers provide the fuel for the gas turbines. Some gasifier plant designs, including the air-blown processes, some integrated oxygen blown processes and some oxygen-blown processes followed by heavy moisturization, produce fuel gases which have lower heating values ranging from 130 to below 100 BTU/scf for which there is little gas turbine combustion experience. This program has the objecti… more
Date: December 31, 1992
Creator: Ekstrom, T. E.; Battista, R. A. & Maxwell, G. P.
Item Type: Refine your search to only Article
open access

An improvement in the modified finite element procedure for underwater shock analysis

Description: The modified finite element procedure for underwater shock analysis decomposes the total pressure field into the incident, reflected and radiated pressure. The incident pressure is calculated by using a closed form solution. The reflected and radiated pressure are calculated in two separate finite element analyses. Artificial damping is added in the finite element analyses. Since these two pressures are generated from the fluid-structure interface and mostly propagate away from the interface, t… more
Date: December 31, 1992
Creator: Chan, S. K.
Item Type: Refine your search to only Article
open access

FLASH predictions of the MB-2 steam line break tests

Description: If a main steam line from a pressurized water reactor (PWR) steam generator were to rupture, the effect would be a depressurization of the secondary side and a consequential overcooling transient on the primary side. Analyses must accurately predict the effects of the rapid cooldown of the reactor vessel coolant on positive nuclear-kinetic reactivity feedback to the core plus thermal shock to the reactor vessel and other primary system components. Many early studies of the steam line break (SLB… more
Date: December 31, 1992
Creator: Lincoln, F. W.; Coffield, R. D. & Johnson, E. G.
Item Type: Refine your search to only Article
open access

Polarized protons in large center of mass collisions

Description: We present a scheme for polarized proton operation in the RHIC collider complex. For low energies the partial siberian snake project in the AGS is reviewed. As the energy is increased the difficulties of preserving the polarization also increases. A plan for preserving the polarization at high energies in RHIC using two Siberian Snakes is discussed. Spin rotators will be used around the collision points so that the helicity can be varied.
Date: December 31, 1992
Creator: Tepikian, S.
Item Type: Refine your search to only Article
open access

Assessment of strontium in the Savannah River Site environment

Description: This document on strontium is published as a part of the Radiological Assessment Program (RAP). It is the sixth in a series of eight documents on individual radioisotopes released to the environment as a result of SRS (Savannah River Site) operations. Strontium exists in the environment as a result of above-ground nuclear weapons tests, the Chernobyl accident, the destruction of satellite Cosmos 954, small releases from reactors and reprocessing plants, and the operation of industrial, medical,… more
Date: December 31, 1992
Creator: Carlton, W. H.; Evans, A. G.; Geary, L. A.; Murphy, C. E. Jr. & Strom, R. N.
Item Type: Refine your search to only Report
open access

Continuation of support for the intercampus Institute for research at particle accelerators. Annual report, December 1991--November 1992

Description: The dominant Institute activity was preparation of hardware and software for the LSND experiment at Los Alamos, which concerns a search for neutrino oscillations in three different ways and a measurement of the contribution ({Delta}s) of strange quarks to the spin of the proton. Much of the effort dealt with particle detectors, the liquid scintillation detector for LSND and the detectors for the B Factory at SLAC.
Date: December 31, 1992
Creator: Vernon, W.
Item Type: Refine your search to only Report
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