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Accelerated Aging of Polymer Composite Bridge Materials
Accelerated aging research on samples of composite material and candidate ultraviolet (UV) protective coatings is determining the effects of six environmental factors on material durability. Candidate fastener materials are being evaluated to determine corrosion rates and crevice corrosion effects at load-bearing joints. This work supports field testing of a 30-ft long, 18-ft wide polymer matrix composite (PMC) bridge at the Idaho National Engineering and Environmental Laboratory (INEEL). Durability results and sensor data from tests with live loads provide information required for determining the cost/benefit measures to use in life-cycle planning, determining a maintenance strategy, establishing applicable inspection techniques, and establishing guidelines, standards, and acceptance criteria for PMC bridges for use in the transportation infrastructure.
Date:
March 1, 1999
Creator:
Rodriguez, J. G.; Blackwood, L. G.; Torres, L. L.; Carlson, N. M. & Yoder, T. S.
Object Type:
Article
System:
The UNT Digital Library
Accelerated Aging of Polymer Composite Bridge Materials
Accelerated aging research on samples of composite material and candidate ultraviolet (UV) protective coatings is determining the effects of six environmental factors on material durability. Candidate fastener materials are being evaluated to determine corrosion rates and crevice corrosion effects at load-bearing joints. This work supports field testing of a 30-ft long, 18-ft wide polymer matrix composite (PMC) bridge at the Idaho National Engineering and Environmental Laboratory (INEEL). Durability results and sensor data from tests with live loads provide information required for determining the cost/benefit measures to use in life-cycle planning, determining a maintenance strategy, establishing applicable inspection techniques, and establishing guidelines, standards, and acceptance criteria for PMC bridges for use in the transportation infrastructure.
Date:
March 1, 1999
Creator:
Carlson, Nancy Margaret; Blackwood, Larry Gene; Torres, Lucinda Laine; Rodriguez, Julio Gallardo & Yoder, Timothy Scott
Object Type:
Article
System:
The UNT Digital Library
Accelerated alpha radiation damage in a ceramic waste form, interim results
Interim results are presented on the alpha-decay damage study of a {sup 238}Pu-loaded ceramic waste form (CWF). The waste form was developed to immobilize fission products and transuranic species accumulated from the electrometallurgical treatment of spent nuclear fuel. To evaluate the effects of {alpha}-decay damage on the waste form the {sup 238}Pu-loaded material was analyzed by (1) x-ray diffraction (XRD), (2) microstructure characterization by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) with energy and wavelength dispersive spectroscopy (EDS/WDS) and electron diffraction, (3) bulk density measurements and (4) waste form durability, performed by the product consistency test (PCT). While the predominate phase of plutonium in the CWF, PuO{sub 2}, shows the expected unit cell expansion due to {alpha}-decay damage, currently no significant change has occurred to the macro- or microstructure of the material. The major phase of the waste form is sodalite and contains very little Pu, although the exact amount is unknown. Interestingly, measurement of the sodalite phase unit cell is also showing very slight expansion; again, presumably from {alpha}-decay damage.
Date:
November 11, 1999
Creator:
Frank, S. M.; Johnson, S. G.; Moschetti, T. L.; O'Holleran, T. P.; Sinkler, W.; Esh, D. et al.
Object Type:
Article
System:
The UNT Digital Library
Accelerated Life Testing and Service Lifetime Prediction for PV Technologies in the Twenty-First Century
The purposes of this paper are to (1) discuss the necessity for conducting accelerated life testing (ALT) in the early stages of developing new photovoltaic (PV) technologies, (2) elucidate the crucial importance for combining ALT with real-time testing (RTT) in terrestrial environments for promising PV technologies for the 21st century, and (3) outline the essential steps for making a service lifetime prediction (SLP) for any PV technology. The specific objectives are to (a) illustrate the essential need for ALT of complete, encapsulated multilayer PV devices, (b) indicate the typical causes of degradation in PV stacks, (c) elucidate the complexity associated with quantifying the durability of the devices, (d) explain the major elements that constitute a generic SLP methodology, (e) show how the introduction of the SLP methodology in the early stages of new device development can reduce the cost of technology development, and (f) outline the procedure for combining the results of ALT and RTT, establishing degradation mechanisms, using sufficient numbers of samples, and applying the SLP methodology to produce a SLP for existing or new PV technologies.
Date:
July 13, 1999
Creator:
Czanderna, A. W. & Jorgensen, G. J.
Object Type:
Article
System:
The UNT Digital Library
Accelerated thermal recovery for flash-lamp-pumped solid-state laser amplifiers final report for 97-ERD-133
We have developed a cost-effective method for accelerating the thermal wavefront recovery and shot rate of large, flashlamp-pumped, Nd:glass, Brewster-angle slab lasers of the type used for studying inertial confinement fusion (ICF) and laser-plasma interactions. This method removes waste pump heat by flowing slightly-chilled, turbulent gas over the flashlamps and blastshields after each shot, with the cooled blastshields serving as heat sinks for radiatively extracting residual heat deposited in the laser slabs. We performed both experiments and modeling to characterize residual optical distortions arising from both temperature gradients within the laser slabs as well as from buoyantly-driven convection currents in the amplifier cavity and attached beam tubes. The most rapid thermal recovery was achieved by reducing the temperature of the cooling gas by 0.5-1 C below the ambient temperature for about two hours after the shot. Model predictions for the 1.8-MJ National Ignition Facility (NIF) laser now being built at Lawrence Livermore National Laboratory (LLNL) show that such chilled-gas cooling would increase the thermal-distortion-limited shot rate from about one shot every eight hours to one shot every three to four hours, thus significantly increasing the potential scientific productivity of this major Department of Energy (DOE) facility.
Date:
September 3, 1999
Creator:
Erlandson, A. C.; London, R.; Manes, K.; Marshall, C.; Petty, C.; Pierce, R. et al.
Object Type:
Report
System:
The UNT Digital Library
Accelerating deactivation
In recent years, the focus of the U.S. Department of Energy (DOE) complex has shifted from defense production to facility stabilization, decommissioning, and environmental restoration. This shift from production to cleanup requires a parallel shift from operations-focused management to project-focused management for an efficient facility deactivation. In the operation-focused management organization, activities are planned and executed based on production goals and are typically repetitive and cyclic. In the project-focused management environment, activities are based on a defined scope/end objective, start date, and completion date. Since the workforce used to perform production operations is also usually relied onto perform facility deactivation, it is important to shift from an operations management approach to a project management approach. It is best if the transition is accomplished quickly so the project can move forward and workers don't spend a lot of energy anticipating change. Therefore, it is essential that managers, planners, and other workers understand the key elements associated with planning a deactivation project. This paper describes a planning approach that has been used successfully to plan deactivation projects consistent with the requirements provided in DOE Order 430.1A Life Cycle Asset Management and the companion Deactivation Implementation Guide, G430. 1A-3, while exceeding schedule expectations …
Date:
February 1, 1999
Creator:
FISHBACK, K.M.
Object Type:
Article
System:
The UNT Digital Library
Accelerating Thick Aluminum Liners Using Pulsed Power
The authors have investigated the acceleration of very thick cylindrical aluminum liners using the Pegasus II capacitory bank. These accelerated solid liners will be used to impact other objects at velocities below 1.5 km/sec, allowing one to generate and sustain shocks of a few 100 kilobar for a few microseconds. A cylindrical shell of 1100 series aluminum with an initial inner radius of 23.61 mm, an initial thickness of 3.0 mm, and a height of 20 mm, was accelerated using a current pulse of 7.15 MA peak current and a 7.4 microsecond quarter cycle time. The aluminum shell was imploded within confining copper glide planes with decreasing separation with an inward slope of 8 degrees. At impact with a cylindrical target of diameter 3-cm, the liner was moving at 1.4 km/sec and its thickness increased to 4.5 mm. Radial X-ray radiograms of the liner showed both the liner and the glide plane interface. The curvature of the inner surface of the liner was measured before impact with the 15-mm radius target. The radiograms also showed that the copper glide planes distorted as the liner radius decreased and that some axial stress is induced in the liner. The axial stresses did …
Date:
June 28, 1999
Creator:
Kyrala, George A.; Hammerburg, James E.; Bowers, David; Stokes, John; Morgan, Dane V.; Anderson, Wally E. et al.
Object Type:
Article
System:
The UNT Digital Library
Acceleration amplifications in nif structures subjected to earthquake base motions
NIF technical staff have questioned the possibility of obtaining acceleration amplifications (i.e. amplification of the ground acceleration values) in a structure which are significantly higher than the acceleration amplification exhibited across the period range in the input response spectrum. This note utilizes a simple example to illustrate that the acceleration amplification resulting from the dynamic response of a structural system can indeed be significantly higher than the amplifications indicated in the response spectrum, and that the GEMINI program is computing the appropriate acceleration levels for a simple MDOF system.
Date:
November 29, 1999
Creator:
McCallen, D.
Object Type:
Report
System:
The UNT Digital Library
Acceleration and Storage of Polarized Proton Beam at RHIC
None
Date:
September 12, 1999
Creator:
Roser, T.
Object Type:
Article
System:
The UNT Digital Library
Acceleration of Polarized Protons to High Energy.
High energy polarized beam collisions will open up the unique physics opportunities of studying spin effects in hard processes. However, the acceleration of polarized beams in circular accelerators is complicated by the numerous depolarizing spin resonances. Using a partial Siberian Snake and a rf dipole that ensure stable adiabatic spin motion during acceleration has made it possible to accelerate polarized protons to 25 GeV at the Brookhaven AGS. Full Siberian Snakes and polarimeters are being developed for RHIC to make the acceleration of polarized protons to 250 GeV possible. A similar scheme is being studied for the 800 GeV HERA proton accelerator.
Date:
March 29, 1999
Creator:
Roser, T.
Object Type:
Article
System:
The UNT Digital Library
Acceleration schedules for a recirculating heavy-ion accelerator
The recent development of miniature inductive adders has made it feasible to design programmable, high-repetition-rate pulsers with a substantially higher voltage than is possible using a conventional field-effect transistor architecture. Prototype pulsers using the new technology are being developed as part of a series of experiments at LLNL to test the concept of a recirculating induction accelerator. Preliminary numerical work is reported here to determine what effects the higher-voltage pulsers would have on the beam quality of the LLNL small recirculator.
Date:
June 1, 1999
Creator:
Grote, D. P. & Sharp, W.
Object Type:
Article
System:
The UNT Digital Library
Acceleration Stages for a Muon Collider.
None
Date:
March 29, 1999
Creator:
Berg, J. S.
Object Type:
Article
System:
The UNT Digital Library
Accelerator Physics Challenges for Future Linear Colliders
At the present time, there are a number of future linear collider designs with a center-of-mass energy of 500 GeV or more with luminosities in excess of 10{sup -34}cm{sup -2}s{sup -1} . Many of these designs are at an advanced state of development. However, to attain the high luminosity, the colliders require very small beam emittances, strong focusing, and very good stability. In this paper, some of the outstanding issues related to producing and maintaining the small beam sizes are discussed. Although the different designs are based on very different rf technologies, many of these problems are common.
Date:
August 9, 1999
Creator:
Raubenheimer, Tor O
Object Type:
Report
System:
The UNT Digital Library
Accelerator Production of Tritium/Low Energy Demonstration Accelerator/Coupled-Cavity Drift Tube LINAC (APT/LEDA/CCDTL) Low Beta "Hot Model" Vacuum System
This report addresses the components and details of the vacuum system for the Accelerator Production of Tritium/Low Energy Demonstration Accelerator/Coupled-Cavity Drift Tube.
Date:
September 1999
Creator:
Whelan, T. J.
Object Type:
Report
System:
The UNT Digital Library
Acceptable Knowledge Summary Report for Waste Stream: SR-T001-221F-HET/Drums
This report is fully responsive to the requirements of Section 4.0 Acceptable Knowledge from the WIPP Transuranic Waste Characterization Quality Assurance Plan, CAO-94-1010, and provides a sound, (and auditable) characterization that satisfies the WIPP criteria for Acceptable Knowledge.
Date:
June 14, 1999
Creator:
Lunsford, G. F.
Object Type:
Report
System:
The UNT Digital Library
Acceptable Knowledge Summary Report for Waste Stream: SR-T001-221F-HET/Drums
Since beginning operations in 1954, the Department of Energy's Savannah River Site FB-Line conducted atomic energy defense activities consistent with the listing in Section 10101(3) of the Nuclear Waste Policy Act of 1982. The facility mission was to process and convert dilute plutonium solution into highly purified weapons grade plutonium metal. As a result of various activities conducted in support of the mission (e.g., operation, maintenance, repair, clean up, and facility modifications), the facility generated transuranic waste. This document, along with referenced supporting documents, provides a defensible and auditable record of acceptable knowledge for one of the waste streams from the FB-Line. The waste was packaged in 55-gallon drums, then shipped to the transuranic waste storage facility in ''E'' area of the Savannah River Site. This acceptable knowledge report includes information relating to the facility's history, configuration,equipment, process operations, and waste management practices.
Date:
August 23, 1999
Creator:
Lunsford, G.F.
Object Type:
Report
System:
The UNT Digital Library
Acceptance and operational test procedure for neutron and gamma probe application to tank 241-SY-101 MITs
This ATP/OTP provides procedures for testing to be performed to verify that newly procured neutron and gamma probes (reduced diameter design modifications) for operation in the Tank 241-SY-101 MlTs are compatible with existing LOW van instrumentation and hardware. A set of moisture data versus elevation will be obtained from the Tank 241-SY-101 MITs, and (optionally) from the Tank 241-AX-I01 LOW as part of this testing program.
Date:
June 2, 1999
Creator:
CANNON, N.S.
Object Type:
Report
System:
The UNT Digital Library
Acceptance and Operational Test Report for Neutron and Gamma Probe Application to Tank 241-SY-101 MITs
This Operational Test Report (OTR) presents the results of the ATP/OTP testing performed to verify that newly procured neutron and gamma probes (reduced diameter design modifications) for operation in the Tank 241-SY-101 MITs are compatible with existing LOW van instrumentation and hardware. This verification was accomplished and a set of moisture data versus elevation were obtained from the Tank 241-SY-101 MITs as part of this testing program.
Date:
August 12, 1999
Creator:
CANNON, N.S.
Object Type:
Report
System:
The UNT Digital Library
Acceptance for Beneficial Use Pumping Instrumentation and Control Skid L
This is a final Acceptance for Beneficial Use (ABU) for Pumping and Instrumentation Control (PIC) skid ''L''. PIC skid ''L'' is ready for pumping tank U-105. All the testing and documentation has been completed as required on the ABU checklist. This ABU covers only the readiness of the PIC skid ''L''. Other U-farm preparations including dilution tank fabrication, portable exhauster readiness, leak detection, valve pit preparation, and the Operation Control Station readiness are not part of this ABU. PIC skid ''L'' is a new skid fabricated and tested at Site Fabrication Services. The skid controls the jet pump and monitors various instruments associated with the pumping operation. This monitoring includes leak detection along the waste transfer route and flammable gases in the pump pit.
Date:
November 17, 1999
Creator:
Koch, M. R.
Object Type:
Report
System:
The UNT Digital Library
[Acceptance of Marcus Fellowship: Academic Year 1999-2000]
A letter from an enthusiastic applicant officially accepting the Marcus Fellowship offer for the academic year 1999-2000.
Date:
May 14, 1999
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
Acceptance/status of construction at suspension of the Hanford cone penetrometer multi-sensor and multi-sample soil sampler probe systems
This document describes the condition of the multi-sensor cone penetrometer probe system at project termination.
Date:
July 16, 1999
Creator:
Troyer, G. L.
Object Type:
Report
System:
The UNT Digital Library
Acceptance test plan for the 241-AN-105 multi-function corrosion monitoring system
This Acceptance Test Procedure (ATP) will document the satisfactory operation of the corrosion probe tree assembly destined for installation into tank 241-AN-105. This ATP will be performed by the manufacturer prior to delivery to the site. The objective of this procedure is to demonstrate and document the acceptance of the corrosion probe tree assembly to be installed into tank 241-AN-105. The test will consist of a pressure test to verify leak tightness of the probe tree body, a continuity test of the probe tree wiring, a test of the high level detector wiring, a test of the operation of the Type K thermocouples along the probe body, and verification of operation of corrosion monitoring computer and instrumentation.
Date:
June 24, 1999
Creator:
EDGEMON, G.L.
Object Type:
Report
System:
The UNT Digital Library
Acceptance test procedure bldg. 271-U remote monitoring of project W-059 B-Plant canyon exhaust system
The test procedure provides for verifying indications and alarms The test procedure provides for verifying indications and alarms associated with the B Plant Canyon Ventilation System as they are being displayed on a remote monitoring workstation located in building 271-U. The system application software was installed by PLCS Plus under contract from B&W Hanford Company. The application software was installed on an existing operator workstation in building 271U which is owned and operated by Bechtel Hanford Inc.
Date:
September 1, 1999
Creator:
MCDANIEL, K.S.
Object Type:
Report
System:
The UNT Digital Library
Acceptance Test Procedure for AMS-4 Continuous Air Monitors (CAM) at 241-AN Exhausters
This supporting document provides detailed instruction for ensuring the existing alarms and interlocks are in an acceptable condition prior to performing the functional test of the AMS-4 installation.
Date:
September 22, 1999
Creator:
FREEMAN, R.D.
Object Type:
Report
System:
The UNT Digital Library