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Hanford Contact-Handled Transuranic Drum Retrieval Project Planning Document
The Hanford Site is one of several US Department of Energy (DOE) sites throughout the US that has generated and stored transuranic (TRU) wastes. The wastes were primarily placed in 55-gallon drums, stacked in trenches, and covered with soil. In 1970, the Nuclear Regulatory Commission ordered that TRU wastes be segregated from other radioactive wastes and placed in retrievable storage until such time that the waste could be sent to a geologic repository and permanently disposed. Retrievable storage also defined container storage life by specifying that a container must be retrievable as a contamination-free container for 20 years. Hanford stored approximately 37,400 TRU containers in 20-year retrievable storage from 1970 to 1988. The Hanford TRU wastes placed in 20-year retrievable storage are considered disposed under existing Resource Conservation and Recovery Act (RCRA) regulations since they were placed in storage prior to September 1988. The majority of containers were 55-gallon drums, but 20-year retrievable storage includes several TRU wastes covered with soil in different storage methods.
Date:
November 17, 1998
Creator:
Demiter, J. A.
Object Type:
Report
System:
The UNT Digital Library
Examination of subaerially altered basaltic glass with TEM and EELS
We have examined the weathered surfaces of 720 year old Hawaiian basalt glasses that were recovered from a subaerial environment with high-resolution transmission electron microscopy (TEM) and energy filtered imaging and electron energy loss spectroscopy (EELS) techniques. Whereas the alteration products (palagonite) were physically detached from the underlying glass in most samples, a gel-like amorphous layer was observed adjacent to the glass in a few samples. To our knowledge, this is the first time a gel layer has been observed on weathered basalt. This is significant because analogous gel layers have been observed on nuclear waste glasses reacted in laboratory tests, and this demonstrates an important similarity in the mechanisms of the weathering of basalt and the corrosion of waste glasses.
Date:
June 17, 1998
Creator:
Luo, J. S. & Ebert, W. L.
Object Type:
Article
System:
The UNT Digital Library
The performance of the small-angle diffractometer, SAND at IPNS.
The time-of-flight small-angle diffractometer SAND has been serving the scientific user community since 1996. One notable feature of SAND is its capability to measure the scattered intensity in a wide Q (4{pi}sin{theta}/{lambda}, where 2{theta} is the scattering angle and {lambda} is the wavelength of the neutrons) range of 0.0035 to 0.5 {angstrom}{sup {minus}1} in a single measurement. The optical alignment system makes it easy to set up the instrument and the sample. The cryogenically cooled MgO filter reduces the fast neutrons over two orders of magnitude, while still transmitting over 70% of the cold neutrons. A drum chopper running at 15 Hz suppresses the delayed neutron background. SAND has a variety of ancillary equipment to control the sample environment. In this paper we describe the features of the SAND instrument, compare its data on a few standard samples with those measured at well established centers in the world, and display two scientific examples which take advantage of measuring data in a wide Q-range in a single measurement. With a new set of tight collimators the Q{sub min} can be lowered to 0.002 {angstrom}{sup {minus}1} and the presently installed high-angle bank of detectors will extend the Q{sub max} to 2 {angstrom}{sup …
Date:
July 17, 1998
Creator:
Thiyagarajan, P.
Object Type:
Article
System:
The UNT Digital Library
Phase stability and grain growth in an Ag/Bi-2223 composite conductor prepared using fine-grained Bi-2223 as a precursor.
We have investigated the stability and microstructural transformability of the Bi-2223 phase in a silver-sheathed monofilament composite tape fabricated using fine-grained Bi{sub 1.7}Pb{sub 0.3}Sr{sub 1.9}Ca{sub 2.0}-Cu{sub 3.0}O{sub y} (Bi-2223) as the precursor powder. The fully formed Bi-2223 precursor was prepared using established procedures. The purpose of this study was to explore the prospects for growing textured, large-grain-size Bi-2223 from the fine-grained precursor by process parameter perturbations. These perturbations included thermal ramp up variations, programmed heat treatment temperature and oxygen pressure fluctuations, and parameter manipulations during cool-down. Our results show that the types of heat treatments used in conventional oxide-powder-in-tube (OPIT) processing do not facilitate Bi-2223 grain growth when the precursor powder is preconcerted Bi-2223. We also observed that the Bi-2223 partially. decomposed during conventional thermal ramp-up in 0.075 atm O{sub 2}, but that this decomposition can be inhibited by ramping up in a reduced oxygen pressure. A pathway was found for back-reacting the fine-grained Bi-2223 (to Bi-2212, Bi-2201 and nonsuperconducting secondary phases), then reforming large-grained Bi-2223 in a colony microstructure having some distinct differences from that produced during conventional OPIT processing.
Date:
September 17, 1998
Creator:
Merchant, N. N.
Object Type:
Article
System:
The UNT Digital Library
Transient analysis of a flywheel battery containment during a full rotor burst event.
Flywheels are being developed for use in an Advanced Locomotive Propulsion System (ALPS) targeted for use in high speed passenger rail service. The ALPS combines high performance, high speed gas turbines, motor/generators and flywheels to provide a light-weight, fuel-efficient power system. Such a system is necessary to avoid the high cost of railway electrification, as is currently done for high speed rail service (>100mph) since diesels are too heavy. The light-weight flywheel rotors are made from multilayered composite materials, and are operated at extremely high energy levels. Metal containment structures have been designed to enclose the rotors and provide encapsulation of the rotor during postulated failure events. One such event is a burst mode failure of the rotor in which the composite rim is assumed to burst into debris that impacts against the containment. This paper presents a finite element simulation of the transient structural response of a subscale metal flywheel containment structure to a rotor burst event.
Date:
April 17, 1998
Creator:
Hsieh, B. J.
Object Type:
Article
System:
The UNT Digital Library
Structure and formation mechanism of the transfermium isotope {sup 254}No.
The ground-state band of the Z=102 isotope {sup 254}No has been identified up to spin 14, indicating that the nucleus is deformed. The deduced quadruple deformation, {beta} = 0.27, is in agreement with theoretical predictions. These observations confirm that the shell-correction energy responsible for the stability of transfermium nuclei is partly derived from deformation. The survival of {sup 254}No up to spin 14 means that its fission barrier persists at least up to that spin.
Date:
December 17, 1998
Creator:
Reiter, P.
Object Type:
Article
System:
The UNT Digital Library
Economic analyses of alpha channeling in tokamak power plants.
The hot-ion-mode of operation [1] has long been thought to offer optimized performance for long-pulse or steady-state magnetic fusion power plants. This concept was revived in recent years when theoretical considerations suggested that nonthermal fusion alpha particles could be made to channel their power density preferentially to the fuel ions [2,3]. This so-called anomalous alpha particle slowing down can create plasmas with fuel ion temperate T{sub i} somewhat larger than the electron temperature T{sub e}, which puts more of the beta-limited plasma pressure into the useful fuel species (rather than non-reacting electrons). As we show here, this perceived benefit may be negligible or nonexistent for tokamaks with steady state current drive. It has likewise been argued [2,3] that alpha channeling could be arranged such that little or no external power would be needed to generate the steady state toroidal current. Under optimistic assumptions we show that such alpha-channeling current drive would moderately improve the economic performance of a first stability tokamak like ARIES-I [4], however a reversed-shear (advanced equilibrium) tokamak would likely not benefit since traditional radio-wave (rf) electron-heating current drive power would already be quite small.
Date:
September 17, 1998
Creator:
Ehst, D.A.
Object Type:
Report
System:
The UNT Digital Library
Document release procedure for HANDI 2000 business management system
This document will show the procedure to get a HANDI 2000 document released through Central Files.
Date:
September 17, 1998
Creator:
ADAMS, D.E.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: DISD indictment]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. Story aired at 10pm.
Date:
March 17, 1998, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Graham trial]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. Story aired at 10pm.
Date:
February 17, 1998, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Non-Destructive Evaluation of Wind Turbine Blades Using an Infrared Camera
The use of a digital infrared as a non-destructive evaluation thermography camera (NDE) tool was ex- plored in two separate wind turbine blade fatigue tests. The fwst test was a fatigue test of part of a 13.1 meter wood-epoxy-composite blade. The second test was on a 4.25 meter pultruded fiber glass blade section driven at several mechanical resonant frequencies. The digital infrared camera can produce images of either the static temperature distribution on the surface of the specimen, or the dynamic temperature distribution that is in phase with a specific frequency on a vibrating specimen. The dynamic temperature distribution (due to thermoplastic effects) gives a measure of the sum of the principal stresses at each point on the surface. In the wood- epoxy-composite blade fatigue test, the point of ultimate failure was detected long before failure occurred. The mode shapes obtained with the digital infrared camera, from the resonant blade tests, were in very good agree- ment with the finite-element calculations. In addition, the static temperature images of the resonating blade showed two areas that contained cracks. Close-up dy- namic inf%red images of these areas showed the crack structure that agreed with subsequent dye-penetrant analysis.
Date:
December 17, 1998
Creator:
Beattie, A. G. & Rumsey, M.
Object Type:
Article
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 82, No. 119, Ed. 1 Tuesday, February 17, 1998
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 17, 1998
Creator:
Ratcliffe, Heather
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Levelland and Hockley County News-Press (Levelland, Tex.), Vol. 20, No. 14, Ed. 1 Sunday, May 17, 1998
Semiweekly newspaper from Levelland, Texas that includes local, state, and national news along with advertising.
Date:
May 17, 1998
Creator:
Rigg, John
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 76, No. 248, Ed. 1 Monday, August 17, 1998
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
August 17, 1998
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 41, Ed. 1 Thursday, December 17, 1998
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 17, 1998
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
Stamford American (Stamford, Tex.), Vol. 78, No. 26, Ed. 1 Thursday, September 17, 1998
Weekly newspaper from Stamford, Texas that includes local, state, and national news along with advertising.
Date:
September 17, 1998
Creator:
Dalliston, Linda
Object Type:
Newspaper
System:
The Portal to Texas History
The Bastrop Advertiser (Bastrop, Tex.), Vol. 144, No. 93, Ed. 1 Saturday, January 17, 1998
Semi-weekly newspaper from Bastrop, Texas that includes local, state, and national news along with advertising.
Date:
January 17, 1998
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 76, No. 144, Ed. 1 Friday, April 17, 1998
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
April 17, 1998
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 76, No. 93, Ed. 1 Tuesday, February 17, 1998
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
February 17, 1998
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Bastrop Advertiser (Bastrop, Tex.), Vol. 145, No. 83, Ed. 1 Thursday, December 17, 1998
Semi-weekly newspaper from Bastrop, Texas that includes local, state, and national news along with advertising.
Date:
December 17, 1998
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
The Bastrop Advertiser (Bastrop, Tex.), Vol. 145, No. 66, Ed. 1 Saturday, October 17, 1998
Semi-weekly newspaper from Bastrop, Texas that includes local, state, and national news along with advertising.
Date:
October 17, 1998
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
The Bastrop Advertiser (Bastrop, Tex.), Vol. 145, No. 57, Ed. 1 Thursday, September 17, 1998
Semi-weekly newspaper from Bastrop, Texas that includes local, state, and national news along with advertising.
Date:
September 17, 1998
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
[News Clip: Cuomo]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
January 17, 1998, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Stamford American (Stamford, Tex.), Vol. 78, No. 39, Ed. 1 Thursday, December 17, 1998
Weekly newspaper from Stamford, Texas that includes local, state, and national news along with advertising.
Date:
December 17, 1998
Creator:
Dalliston, Linda
Object Type:
Newspaper
System:
The Portal to Texas History