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Preliminary evaluation of Am/Cm melter feed preparation process upset recovery flowsheets
This document summarizes the results from the development of flowsheets to recover from credible processing errors specified in TTR 99-MNSS/SE-006. The proposed flowsheets were developed in laboratory scale equipment and will be utilized with minor modifications for full scale demonstrations in the Am/Cm Pilot Facility.
Date:
January 20, 2000
Creator:
Stone, M. E. & DuVall, J. W.
Object Type:
Report
System:
The UNT Digital Library
Probability of Potential Multi-Canister Overpack Loading System Drop of Proof Load in the K West Basin South Loadout Pit
This document presents the results of a probabilistic analysis of the potential for load drop during the load test of the K West Basin South Loadout Pit Gantry. The calculations are in support of the cask loading system (CLS) subproject load test of the gantry. The purpose of this calculation note is to document the probabilistic calculation of the per lift potential for drop of a test load by the Multi-Canister Overpack (MCO) Loading System (MLS) during load testing at the K West Basin south loadout pit. The MLS subproject needs to load test the MLS in the K West Basin south loadout pit. To perform this test, a basket mockup weighing approximately 4,500 lb (125% of a fully loaded MCO basket accounting for water displacement) needs to be used for one or more load tests. The test load will comprise a standard basket lifting attachment with several ring-shaped steel segments to provide the required weight. The test load will exceed the K Basin Safety Analysis Report (WHC-SD-WM-SAR-062) (SAR) allowances for load drop in the K West Basin south loadout pit. This probabilistic calculation will be used as part of the basis for seeking U.S. Department of Energy approval to …
Date:
January 20, 2000
Creator:
Shultz, M. V.
Object Type:
Report
System:
The UNT Digital Library
River Protection Project (RPP) Level 0 Logic
The following modifications were made to the River Protection Project Level-0 logic in going from Rev. I to Rev. 2. The first change was the change to the heading at the top of the drawing: ''TWRS Program Logic'' to ''River Protection Project Mission Logic''. Note that purely format changes (e.g., fonts, location of boxes, date format, addition of numbers to ''ghost'' boxes) are not discussed. However, the major format change was to show DOE-BNFL Inc. Interface Control Documents (ICDs) on the logic.
Date:
January 20, 2000
Creator:
Seeman, S. E.
Object Type:
Report
System:
The UNT Digital Library
Scalability and Performance of a Large Linux Cluster
In this paper the authors present performance results from several parallel benchmarks and applications on a 400-node Linux cluster at Sandia National Laboratories. They compare the results on the Linux cluster to performance obtained on a traditional distributed-memory massively parallel processing machine, the Intel TeraFLOPS. They discuss the characteristics of these machines that influence the performance results and identify the key components of the system software that they feel are important to allow for scalability of commodity-based PC clusters to hundreds and possibly thousands of processors.
Date:
January 20, 2000
Creator:
BRIGHTWELL,RONALD B. & PLIMPTON,STEVEN J.
Object Type:
Article
System:
The UNT Digital Library
Spent Nuclear Fuel (SNF) Project Product Specification
This document establishes the limits and controls for the significant parameters that could potentially affect the safety and/or quality of the Spent Nuclear Fuel (SNF) packaged for processing, transport, and storage. The product specifications in this document cover the SNF packaged in Multi-Canister Overpacks to be transported throughout the SNF Project.
Date:
January 20, 2000
Creator:
PAJUNEN, A.L.
Object Type:
Report
System:
The UNT Digital Library
A statistical review of the oxygen data from the gas generation tests supporting the revision of the 9975 SARP
The Chemical and Hydrogen Technology Section (CHT) of the Savannah River Technology Center (SRTC) has conducted a series of gas generation tests in support of the revision of the safety analysis report for packaging (SARP) for the 9975 container, developed at the Savannah River Site (SRS). The Packaging and Transportation Group of SRTC is coordinating the revision to this SARP. A Task Technical and Quality Assurance Plan directing this work was issued by CHT in February 1999. Initially, the primary interest in this testing was hydrogen generation. From these ``gas generation tests can be tracked in real-time by measuring the pressure of a sealed container of the materials being studied. Because multiple gas phase reactions are produced in the radiation field of the sample, material pressure measurements do not necessarily define the quantity of H{sub 2} generated. However, the change in total molecules of gas can be calculated using the ideal gas law from the pressure measurement, known container volume and sample temperature. A measurement of the actual headspace gases must be completed to calculate the H{sub 2} generation rate for a particular sample.'' As the results from these tests were reviewed, however, questions arose regarding the oxygen in the …
Date:
January 20, 2000
Creator:
Edwards, T. B.
Object Type:
Report
System:
The UNT Digital Library
Transition metal-mediated thermal and photochemical carbon dioxide conversion
As the output of CO{sub 2} from combustion into the environment continues to rise, the search for practical methods for regenerating organic compounds from CO{sub 2} has assumed increased importance. The development of such processes will be assisted by an improved understanding of the chemistry of metal-carbon dioxide complexes, potential intermediates in metal-catalyzed transformations of CO{sub 2}. The initial stage of this project has focused on the thermal and photochemical reactions of discrete CO{sub 2} complexes, resulting in the elucidation of several new CO{sub 2}-splitting reactions. These studies, in turn, have led to the semiserendipitous discovery of a number of other novel/important transformations, including (1) the catalytic hydrogenation of CO{sub 2} to formic acid by [H{sub 2}Rh(PR{sub 3}){sub 3}L]{sup +} complexes; (2) the CO{sub 2}-mediated [Rh(PR{sub 3}){sub 2}(diene)]{sup +}-catalyzed aerobic oxidation of ethers to esters with co-production of formic acid; and (3) the aerobic oxygenation of electron-rich metal-carbonyls and metal-carbonyl-hydrides, forming metal-CO{sub 2} and metal-formate complexes, respectively.
Date:
January 20, 2000
Creator:
Nicholas, Kenneth M.
Object Type:
Report
System:
The UNT Digital Library
Tribological performance of NFC coatings under oil lubrication[Near Frictionless Carbon]
An increase in engine and vehicle efficiency usually requires an increase in the severity of contact at the interfaces of many critical components. Examples of such components include piston rings and cylinder liners in the engine, gears in the transmission and axle, bearings, etc. These components are oil-lubricated and require enhancement of their tribological performance. Argonne National Laboratory (ANL) recently developed a carbon-based coating with very low friction and wear properties. These near-frictionless-carbon (NFC) coatings have potential for application in various engine components for performance enhancement. This paper presents the study of the tribological performance of NFC-coated steel surfaces when lubricated with fully formulated and basestock synthetic oils. The NFC coatings reduced both the friction and wear of lubricated steel surfaces. The effect of the coating was much more pronounced in tests with basestock oil. This suggests that NFC-coated parts may not require heavily formulated lubricant oils to perform satisfactorily in terms of reliability and durability.
Date:
January 20, 2000
Creator:
Ajayi, O. O.; Alzoubi, M.; Erdemir, A.; Fenske, G. R.; Eryilmaz, O. L. & Zimmerman, S.
Object Type:
Article
System:
The UNT Digital Library
Use of Thermal Data to Estimate Infiltration in Pagany Wash Associated with the winter of 1997-1998 El Nino Precipitation, Yucca Mountain, Nevada
Temperature and air-pressure monitoring in a vertical borehole located in Pagany Wash, a normally dry stream-carved channel northeast of Yucca Mountain, Nevada, indicated that the annual temperature wave was measurable to a depth of 11.1 m. Temperature depressions were measured at depths of 3.1, 6.1, 9.2, and 11.1 m below ground surface. The temperature depressions were interpreted to be the result of infiltration associated with the 1997-1998 El Nino precipitation. A pressure differential, of approximately 2 kiloPascals, between stations located 11.1 and 24.5 m below ground surface was interpreted to be the result of compressed air ahead of the wetting front. The pressure differences between stations indicated that the wetting front migrated deeper than 35.2 m and that the Yucca Mountain Tuff retarded the downward movement of the wetting front. An analytical method indicated that the infiltration flux through the Pagany Wash alluvium due to the 1997-1998 El Nino precipitation was approximately 940 mm. A one-dimensional numerical model indicated that the infiltration flux was approximately 1000 mm. Sensitivity analysis indicated that the potential temperature decrease due to conduction was minimal and that cooler surface temperatures could not account for the measured subsurface temperature depressions.
Date:
January 20, 2000
Creator:
LeCain, G.D.; lu, N. & Kurzmack, M.
Object Type:
Report
System:
The UNT Digital Library