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554 Matching Results
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244-CR Vault Interim Stabilization Project Plan
The 244-CR Vault is a two-level, multi-cell structure of reinforced concrete constructed below grade. The lower cell contains four individual compartments, each containing a steel process storage tank and equipped with a concrete sump. The upper cell contains the piping and support equipment, and has two compartments for each of the tanks. The ''pump pit'' is accessed by the removal of concrete cover blocks, while the smaller ''riser pit'' is accessed by steel cover plates. The facility most recently was used as a double-contained receiver tank (DCRT). A DCRT is a type of waste transfer tank that together with its related equipment constitutes a short-term storage area for liquid waste and has a pump pit for waste transfer operations. This vault most recently was used for short-term storage and waste routing for saltwell liquid pumped from the 241-C Tank Farm in the 200 East Area. Waste transfer lines are connected inside the pump pit by a jumper installed between connecting nozzles. An active ventilation system is in operation at the 244-CR vault. Ventilation supply air enters the upper vault section through an inlet header with some leakage through the spaces between the cell cover blocks. The upper and lower vaults …
Date:
April 25, 2000
Creator:
PARKMAN, D.B.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 101, No. 36, Ed. 1 Tuesday, April 25, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 25, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Analysis of Stress Waves Generated in Water Using Ultrashort Laser Pulses
A Mach-Zehnder interferometer was used for analysis of pressure waves generated by ultrashort laser pulse ablation of water. It was found that the shock wave generated by plasma formation rapidly decays to an acoustic wave. Both experimental and theoretical studies demonstrated that the energy transfer to the mechanical shock was less than 1%.
Date:
April 25, 2000
Creator:
Kim, B. M.; Feit, M. D.; Rubenchik, A. M.; Komashko, A. M.; Reidt, S.; Eichler, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Application of finite element, global polynomial, and kriging response surfaces in Progressive Lattice Sampling designs
This paper examines the modeling accuracy of finite element interpolation, kriging, and polynomial regression used in conjunction with the Progressive Lattice Sampling (PLS) incremental design-of-experiments approach. PLS is a paradigm for sampling a deterministic hypercubic parameter space by placing and incrementally adding samples in a manner intended to maximally reduce lack of knowledge in the parameter space. When combined with suitable interpolation methods, PLS is a formulation for progressive construction of response surface approximations (RSA) in which the RSA are efficiently upgradable, and upon upgrading, offer convergence information essential in estimating error introduced by the use of RSA in the problem. The three interpolation methods tried here are examined for performance in replicating an analytic test function as measured by several different indicators. The process described here provides a framework for future studies using other interpolation schemes, test functions, and measures of approximation quality.
Date:
April 25, 2000
Creator:
Romero, Vincent J.; Swiler, Laura Painton & Giunta, Anthony A.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 78, No. 152, Ed. 1 Tuesday, April 25, 2000
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
April 25, 2000
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 95, No. 33, Ed. 1 Tuesday, April 25, 2000
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
April 25, 2000
Creator:
Keasling, Edna & Fierro, Jennifer
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Herald (Brady, Tex.), Vol. 57, No. 24, Ed. 1 Tuesday, April 25, 2000
Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
April 25, 2000
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
Characterization and decant of Tank 42H sludge sample ESP-200
DWPF Engineering requested that the Savannah River Technology Center (SRTC) provide a demonstration of the DWPF flowsheet on sludge from Tank 42H in the Shielded Cell facility. A 5 liter sample of the Tank 42H sludge (ESP-200), obtained with the tank contents fully mixed, arrived at SRTC on January 20, 1998. This report details receipt of the 5 liter sample at SRTC, the decant of the sample, and the characterization of the pre- and post-decant Tank 42H sludge. Evaluation of the measured composition of the supernate indicates Sample ESP-200 became diluted approximately 20 percent by volume prior to receipt. This dilution complicates the relationship of the characterization of Post-Decant ESP-200 to the current contents of Tank 42H. For the purposes of modeling the current tank contents of Tank 42H, this report provides an estimated composition based on analytical data of recent samples from Tank 42H.
Date:
April 25, 2000
Creator:
Hay, M.S.
Object Type:
Report
System:
The UNT Digital Library
Cold Vacuum Drying (CVD) Facility Diesel Generator Fire Protection
This Acceptance Test Procedure (ATP) has been prepared to demonstrate that the Fire Protection and Detection System installed by Project W-441 (Cold Vacuum Drying Facility and Diesel Generator Building) functions as required by project specifications.
Date:
April 25, 2000
Creator:
Singh, G.
Object Type:
Report
System:
The UNT Digital Library
Corrosion detection in multi-layered rotocraft structures
Rotorcraft structures do not readily lend themselves to quantifiable inspection methods due to airframe construction techniques. Periodic visual inspections are a common practice for detecting corrosion. Unfortunately, when the telltale signs of corrosion appear visually, extensive repair or refurbishment is required. There is a need to nondestructively evaluate airframe structures in order to recognize and quantify corrosion before visual indications are present. Nondestructive evaluations of rotorcraft airframes face inherent problems different from those of the fixed wing industry. Most rotorcraft lap joints are very narrow, contain raised fastener heads, may possess distortion, and consist of thinner gage materials ({approximately}0.012--0.125 inches). In addition the structures involve stack-ups of two and three layers of thin gage skins that are separated by sealant of varying thickness. Industry lacks the necessary data techniques, and experience to adequately perform routine corrosion inspection of rotorcraft. In order to address these problems, a program is currently underway to validate the use of eddy current inspection on specific rotorcraft lap joints. Probability of detection (POD) specimens have been produced that simulate two lap joint configurations on a model TH-57/206 helicopter. The FAA's Airworthiness Assurance Center (AANC) at Sandia Labs and Bell Helicopter have applied single and dual frequency …
Date:
April 25, 2000
Creator:
ROACH,DENNIS P.; WALKINGTON,PHILLIP D.; HOHMAN,ED & MARSHALL,GREG
Object Type:
Article
System:
The UNT Digital Library
Current issues in prompt photon production
The authors give a brief account of recent theoretical developments in prompt photon production.
Date:
April 25, 2000
Creator:
Laenen, E.; Sterman, G. & Vogelsang, W.
Object Type:
Article
System:
The UNT Digital Library
Data analysis and radionuclide scaling factor for the B-Cell waste stream
This report documents a statistical data analysis of radiological data obtained to characterize the 324 Facility B-Cell decontamination and decommissioning waste stream.
Date:
April 25, 2000
Creator:
HILL, R.L.
Object Type:
Report
System:
The UNT Digital Library
Double Shell Tank (DST) Process Waste Sampling Subsystem Definition Report
This report defines the Double-Shell Tank (DST) Process Waste Sampling Subsystem (PWSS). This subsystem definition report fully describes and identifies the system boundaries of the PWSS. This definition provides a basis for developing functional, performance, and test requirements (i.e., subsystem specification), as necessary, for the PWSS. The resultant PWSS specification will include the sampling requirements to support the transfer of waste from the DSTs to the Privatization Contractor during Phase 1 of Waste Feed Delivery.
Date:
April 25, 2000
Creator:
RASMUSSEN, J.H.
Object Type:
Report
System:
The UNT Digital Library
Effects of Fault Displacement on Emplacement Drifts
The purpose of this analysis is to evaluate potential effects of fault displacement on emplacement drifts, including drip shields and waste packages emplaced in emplacement drifts. The output from this analysis not only provides data for the evaluation of long-term drift stability but also supports the Engineered Barrier System (EBS) process model report (PMR) and Disruptive Events Report currently under development. The primary scope of this analysis includes (1) examining fault displacement effects in terms of induced stresses and displacements in the rock mass surrounding an emplacement drift and (2 ) predicting fault displacement effects on the drip shield and waste package. The magnitude of the fault displacement analyzed in this analysis bounds the mean fault displacement corresponding to an annual frequency of exceedance of 10{sup -5} adopted for the preclosure period of the repository and also supports the postclosure performance assessment. This analysis is performed following the development plan prepared for analyzing effects of fault displacement on emplacement drifts (CRWMS M&O 2000). The analysis will begin with the identification and preparation of requirements, criteria, and inputs. A literature survey on accommodating fault displacements encountered in underground structures such as buried oil and gas pipelines will be conducted. For a …
Date:
April 25, 2000
Creator:
Duan, F.
Object Type:
Report
System:
The UNT Digital Library
Electrical conductivity of fluid oxygen at high pressures
Electrical conductivities of fluid oxygen were measured between 30 and 80 GPa at a few 1000 K. These conditions were achieved with a reverberating shock wave technique. The measured conductivities were several orders of magnitude lower than measured previously on the single shock Hugoniot because of lower temperatures achieved under shock reverberation. Extrapolation of these data suggests that the minimum metallic conductivity of a metal will be reached near 100 GPa.
Date:
April 25, 2000
Creator:
Bastea, M; Mitchell, A C & Nellis, W J
Object Type:
Article
System:
The UNT Digital Library
Electrohydraulic Valve-trains for Direct Injection Compression Ignition Camless Engine Operations - Phase I Project Final Report
None
Date:
April 25, 2000
Creator:
Tsao, T-C.; Tai, C.; Stubbs, A. & Hanson, A.
Object Type:
Report
System:
The UNT Digital Library
Ensemble: 2000-04-25 - Spectrum 4
Access:
Use of this item is restricted to the UNT Community
Concert presented at the UNT College of Music Recital Hall.
Date:
April 25, 2000
Creator:
unknown
Object Type:
Sound
System:
The UNT Digital Library
Ensemble: 2000-04-25 - The UNT Jazz Repertory Ensemble
Access:
Use of this item is restricted to the UNT Community
Concert presented at the UNT College of Music Kenton Hall.
Date:
April 25, 2000
Creator:
The UNT Jazz Repertory Ensemble
Object Type:
Sound
System:
The UNT Digital Library
Environmental Assessment and Finding of No Significant Impact: Transfer of the Department of Energy Grand Junction Office to Non-DOE Ownership
The scope of this environmental assessment (EA) is to analyze the potential consequences of the Proposed Action on human health and the environment. Accordingly, this EA contains an introduction to the site and the history of the Grand Junction Office (Chapter One), a description of the Purpose and Need for Agency Action (Chapter Two), a description of the Proposed Action and Alternatives (Chapter Three), and the description of the Affected Environment and the Environmental Consequences (Chapter Four). Resource categories addressed in this EA include geology, soils and topography, groundwater and surface water, floodplains and wetlands, land use and infrastructure, human health, ecological resources, cultural resources, air quality, noise, visual resources, solid and hazardous waste management, transportation, and socioeconomic and environmental justice.
Date:
April 25, 2000
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
European Security: The Debate in NATO and the European Union
This report reviews progress within NATO to develop a European Security and Defense Identity (ESDI), and the initiative within the European Union to create a common European Security and Defense Policy (ESDP). The report considers both European and U.S. perspectives on these developments. It will be updated as events warrant.
Date:
April 25, 2000
Creator:
Donfried, Karen & Gallis, Paul E.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, April 25, 2000
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 25, 2000
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Federal Research: DOE Is Providing Independent Review of the Scientific Merit of Its Research
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the Department of Energy's (DOE) merit review practices, focusing on: (1) what procedures DOE has established for performing merit reviews; and (2) whether DOE could document that it has followed the merit review procedures it has established."
Date:
April 25, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
The Global Modeling Initiative Assessment Model: Model Description, Integration and Testing of the Transport Shell
We describe the three dimensional global stratospheric chemistry model developed under the NASA Global Modeling Initiative (GMI) to assess the possible environmental consequences from the emissions of a fleet of proposed high speed civil transport aircraft. This model was developed through a unique collaboration of the members of the GMI team. Team members provided computational modules representing various physical and chemical processes, and analysis of simulation results through extensive comparison to observation. The team members' modules were integrated within a computational framework that allowed transportability and simulations on massively parallel computers. A unique aspect of this model framework is the ability to interchange and intercompare different submodules to assess the sensitivity of numerical algorithms and model assumptions to simulation results. In this paper, we discuss the important attributes of the GMI effort, describe the GMI model computational framework and the numerical modules representing physical and chemical processes. As an application of the concept, we illustrate an analysis of the impact of advection algorithms on the dispersion of a NO{sub y}-like source in the stratosphere which mimics that of a fleet of commercial supersonic transports (High-Speed Civil Transport (HSCT)) flying between 17 and 20 kilometers.
Date:
April 25, 2000
Creator:
Rotman, D. A.; Tannahill, J. R.; Kinnison, D. E.; Connell, P. S.; Bergmann, D.; Proctor, D. et al.
Object Type:
Report
System:
The UNT Digital Library
The Harper Herald (Harper, Tex.), Vol. 70, No. 17, Ed. 1 Tuesday, April 25, 2000
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
April 25, 2000
Creator:
Bishop, Karen
Object Type:
Newspaper
System:
The Portal to Texas History