States

Demonstration of innovative applicatiions of technology for cost reductions to the CT-121 FGD process (open access)

Demonstration of innovative applicatiions of technology for cost reductions to the CT-121 FGD process

The objective of this project is to demonstrate on a commercial scale several innovative applications of cost-reducing technology to the Chiyoda Thoroughbred-121 (CT-121) process. CT-121 is a second generation flue gas desulfurization (FGD) process which is considered by the Electric Power Research Institute (EPRI) and Southern Company Services (SCS) to be one of the most reliable and lowest cost FGD options for high-sulfur coal-fired utility boiler applications. Demonstrations of the innovative design approaches will further reduce the cost and provide a clear advantage to CT121 relative to competing technology.
Date: May 15, 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Beam and viewing dump positioning inside TFTR for CTS alpha-particle diagnostics (open access)

Beam and viewing dump positioning inside TFTR for CTS alpha-particle diagnostics

A collective Thomson scattering (CTS) diagnostic system for localized measurement of energetic ions is being developed for TFTR. This system will use a 200KW, 56GHz gyrotron and a sensitive heterodyne receiver. In addition, a key element of this system will be beam and viewing dumps which are needed to minimize detection of stray gyrotron and ECE background radiation by the receiver system. It is the purpose of this study to determine the size and location of these dumps inside TFTR taking into account beam refraction and launch and receiver antenna optics scanning. The beam dump must cover all the area in the vacuum chamber where the beam is expected to impinge, and the viewing dump must cover all the areas within the direct line of sight of the receiver antenna. The beam launch system and the receiver antenna are to be placed nearly symmetrically above and below the midplane of the tokamak vacuum vessel, respectively. The beam dump is to be placed at the bottom inside of the vacuum vessel to absorb the gyrotron beam which will be launched from a top port. The viewing dump is expected to be placed symmetrically at the top inside of the vacuum vessel, …
Date: July 15, 1991
Creator: Rhee, D.Y.; Woskov, P.P. (Massachusetts Inst. of Tech., Cambridge, MA (United States). Plasma Fusion Center); Ellis, R. & Park, H. (Princeton Univ., NJ (United States). Plasma Physics Lab.)
Object Type: Report
System: The UNT Digital Library
Studies of human mutation rates (open access)

Studies of human mutation rates

The three objectives of the program are: To isolate by the technique of two-dimensional polyacrylamide gel electrophoresis (2-D PAGE), proteins of special interest because of the relative mutability of the corresponding gene, establish the identity of the protein, and, for selected proteins, move to a characterization of the corresponding gene; To develop a more efficient approach, based on 2-D PAGE, for the detection of variants in DNA, with special reference to the identification of a variant in a child not present in either parent of the child (i.e., a mutation); and, To continue an effective interface with the genetic studies on the children of atomic bomb survivors in Japan, with reference to both the planning and implementation of new studies at the molecular level. For administrative purposes, the program is subdivided into four sections, each under the direction of one of the four co-PIs; the progress during the past year will be summarized in accordance with this sectional structure. 1 tab.
Date: July 15, 1991
Creator: Neel, J.V.
Object Type: Report
System: The UNT Digital Library
Integrated dry NO sub x /SO sub 2 emissions control system (open access)

Integrated dry NO sub x /SO sub 2 emissions control system

This project's goal is to demonstrate the removal up to 70% of the NO{sub x} and 70% of the SO{sub 2} emissions from coal fired utility boilers. It will establish an alternative emissions control technology integrating a combination of several processes, while minimizing capital expenditures and limiting waste production to dry solids that are handled with conventional ash removal equipment. These processes include low-NO{sub x} burners, NO{sub x} ports and urea injection for NO{sub x} control, sodium or calcium based sorbent injection for SO{sub 2} control, and flue gas humidification to enhance the reactivity of the SO{sub 2} control compound.
Date: October 15, 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The limnology of L Lake: Results of the L-Lake monitoring program, 1986--1989 (open access)

The limnology of L Lake: Results of the L-Lake monitoring program, 1986--1989

L Lake was constructed in 1985 on the upper regions of Steel Creek, SRS to mitigate the heated effluents from L Reactor. In addition to the NPDES permit specifications (Outfall L-007) for the L-Reactor outfall, DOE-SR executed an agreement with the South Carolina Department of Health and Environmental Control (SCDHEC), that thermal effluents from L-Reactor will not substantially alter ecosystem components in the approximate lower half of L Lake. This region should be inhabited by Balanced (Indigenous) Biological Communities (BBCs) in accordance with Section 316(a) of the Pollution Control (Clean Water) Act (Public Law 92-500). In response to this requirement the Environmental Sciences Section/Ecology Group initiated a comprehensive biomonitoring program which documented the development of BBCs in L Lake from January 1986 through December 1989. This report summarizes the principal results of the program with regards to BBC compliance issues and community succession in L Lake. The results are divided into six sections: water quality, macronutrients, and phytoplankton, aquatic macrophytes, zooplankton, benthic macroinvertebrates, fish, and community succession. One of the prime goals of the program was to detect potential reactor impacts on L Lake.
Date: December 15, 1991
Creator: Bowers, J.A.
Object Type: Report
System: The UNT Digital Library
Development and demonstration of the use of modular thermo-mechanical pulpmill simulation models to develop energy reduction strategies (open access)

Development and demonstration of the use of modular thermo-mechanical pulpmill simulation models to develop energy reduction strategies

The Institute of Paper Science and Technology (IPST) has received a project grant from the US DOE to develop and demonstrate the use of realtime process simulation modeling as a means of process analysis and optimization. The Project, to be conducted under the auspices of the International Energy Agency (IEA), will target a Thermo-Mechanical Pulping (TMP) operation as the site for the commercial implementation of the technology. IPST and a sub-contractor, SACDA Inc. (SACDA), will cooperate in a two-to-three year effort to produce an on-line simulation program having both steady-state and dynamic modeling capabilities. The Project will take advantage of a current IPST and SACDA joint development effort to merge the IPST's MAPPS (Modular Analysis of Pulp and Paper Systems) program with SACD's MASSBAL program. Using the combined proprietary programs, realtime'' steady-state and dynamic TMP models will be developed and installed as part of a millwide'' information/analysis system. By utilizing the Performance Attribute (PAT) Modeling concept developed at IPST, the models will have the capability of optimizing energy usage and other process operating variables as a function of pulp quality. The primary goal of the Project is to demonstrate that on-line simulation models can provide assistance to operators and managers …
Date: August 15, 1991
Creator: Rushton, J.D.; Jones, G.L. (Institute of Paper Science and Technology, Atlanta, GA (United States)); Leaver, E.L. & Morton, W. (SACDA, Inc. (United States))
Object Type: Report
System: The UNT Digital Library
The U5. 0 Undulator for the ALS (open access)

The U5. 0 Undulator for the ALS

the U5.0 Undulator, and 89 period, 5 cm period length, 4.6 m long insertion device has been designed, is being fabricated and is scheduled for completion in early 1992. This undulator will be the first high brightness source, in the 50 to 1500 eV range, for the Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory. A hybrid magnetic configuration using Nd-Fe-B permanent magnet material and vanadium permendur poles has been selected to achieve the field quality needed to meet performance requirements. The magnetic structure is modular with each half consisting of 5 assembly sections, which provide the periodic structure, and end structures, for entrance and exit correction, mounted on a steel backing beam. Each assembly section consists of 35 half-period pole assemblies bolted to a mount. The required 0.837 Tesla effective peak field at a 1.4 cm gap has been verified with model measurements. Vertical field integral correction is accomplished with the end structures, each having an arrangement of permanent magnet rotors which will be adjusted to minimize electron beam missteering over the undulator operating field range. To reduce the effect of environmental fields, the steel backing beams are connected through parallel, low-reluctance, Ni-Fe hinges. The magnetic structure is …
Date: July 15, 1991
Creator: Hoyer, E.; Chin, J.; Halbach, K.; Hassenzahl, W.V.; Humphries, D.; Kincaid, B. et al.
Object Type: Article
System: The UNT Digital Library
Demonstration of innovative applications of technology for cost reductions to the CT-121 FGD process (open access)

Demonstration of innovative applications of technology for cost reductions to the CT-121 FGD process

The objective of this project is to demonstrate on a commercial scale several innovative applications of cost-reducing technology to the Chiyoda Thoroughbred-121 (CT-121) process. CT-121 is a second generation flue gas desulfurization (FGD) process which is considered by the Electric Power Research Institute (EPRI) and Southern Company Services (SCS) to be one of the most reliable and lowest cost FGD options for high-sulfur coal-fired utility boiler applications. Demonstrations of the innovative design approaches will further reduce the cost and provide a clear advantage to CT121 relative to competing technology.
Date: February 15, 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Space propulsion by fusion in a magnetic dipole (open access)

Space propulsion by fusion in a magnetic dipole

The unique advantages of fusion rocket propulsion systems for distant missions are explored using the magnetic dipole configurations as an example. The dipole is found to have features well suited to space applications. Parameters are presented for a system producing a specific power of kW/kg, capable of interplanetary flights to Mars in 90 days and to Jupiter in a year, and of extra-solar-system flights to 1000 astronomical units (the Tau mission) in 20 years. This is about 10 times better specific power performance than nuclear electric fission systems. Possibilities to further increase the specific power toward 10 kW/kg are discussed, as is an approach to implementing the concept through proof-testing on the moon. 20 refs., 14 figs., 2 tabs.
Date: July 15, 1991
Creator: Teller, E.; Glass, A.J.; Fowler, T.K. (Lawrence Livermore National Lab., CA (United States)); Hasegawa, A. (AT and T Bell Labs., Murray Hill, NJ (United States)) & Santarius, J.F. (Wisconsin Univ., Madison, WI (United States). Fusion Technology Inst.)
Object Type: Article
System: The UNT Digital Library
Safety questions relevant to nuclear thermal propulsion (open access)

Safety questions relevant to nuclear thermal propulsion

Nuclear propulsion is necessary for successful Mars exploration to enhance crew safety and reduce mission costs. Safety concerns are considered by some to be an implements to the use of nuclear thermal rockets for these missions. Therefore, an assessment was made of the various types of possible accident conditions that might occur and whether design or operational solutions exist. With the previous work on the NERVA nuclear rocket, most of the issues have been addressed in some detail. Thus, a large data base exist to use in an agreement. The assessment includes evaluating both ground, launch, space operations and disposal conditions. The conclusion is that design and operational solutions do exist for the safe use of nuclear thermal rockets and that both the environment and crews be protected against harmful radiation. Further, it is concluded that the use of nuclear thermal propulsion will reduce the radiation and mission risks to the Mars crews.
Date: October 15, 1991
Creator: Buden, D.
Object Type: Article
System: The UNT Digital Library
The industrial consortium for the utilization of the geopressured-geothermal resource (open access)

The industrial consortium for the utilization of the geopressured-geothermal resource

Four feasibility studies have been developed by the INEL on thermal enhanced oil recovery (TEOR) Use of Supercritical Fluid processes for Detoxification of Pollutants, and Hydraulic Conversion to Electricity, and Direct Use. The studies provide information bases for potential industrial partners in the resource utilization. A joint proposal from Los Alamos National Laboratory (LANL) and INEL on supercritical fluid processes in going forward. Western Resources Technology has begun development of a dozen geopressured well projects. An hydraulic turbine test will be conducted at Pleasant Bayou in Summer of 1991. Dr. Wayne Steele of Anglewood, TX, a retired medical doctor, is proposing to raise fresh water Australian lobsters in the Pleasant Bayou Well fire water pond. Additional projects such as catfish farming, crayfish, desalintion plant and agricultural greenhouse use of the resource heat are waiting in the wings'' for the DOE wells to become available for pilot use projects. 2 figs.
Date: February 15, 1991
Creator: Negus-de Wys, J.
Object Type: Article
System: The UNT Digital Library
Space nuclear power requirements for ozone layer modification (open access)

Space nuclear power requirements for ozone layer modification

This work estimates the power requirements for using photochemical processes driven by space nuclear power to counteract the Earth's ozone layer depletion. The total quantity of ozone (O{sub 3}) in the Earth's atmosphere is estimated to be about 4.7 {times} 10{sup 37} molecules. The ozone production and destruction rates in the stratosphere are both on the order of 4.9 {times} 10{sup 31} molecules/s, differing by a small fraction so that the net depletion rate is about 0.16 to 0.26% per year. The delivered optical power requirement for offsetting this depletion is estimated to be on the order of 3 GW. If the power were produced by satellite reactors at 800 km altitude (orbit decay time {approximately} 300 years), some means of efficient power beaming would be needed to deliver the power to stratospheric levels (10--50 km). Ultraviolet radiation at 140--150 nm could have higher absorption rates in O{sub 2} (leading to production of atomic oxygen, which can combine with O{sub 2} to form O{sub 3}) than in ozone (leading to photodissociation of O{sub 3}). Potential radiation sources include H{sub 2} lasers and direct nuclear pumping of ultraviolet fluorescers. 5 refs.
Date: October 15, 1991
Creator: Dolan, T.J.
Object Type: Article
System: The UNT Digital Library
Positron ring system using anger-type detectors (open access)

Positron ring system using anger-type detectors

The major accomplishments of this year include (1) building and debugging a new set of coincidence electronics for our laboratory setup, (2) performing a series of detector experiments in the dry glove-box aimed at improving the performance of NaI(Tl) position-sensitive detectors, (3) modifying and debugging a Monte Carlo simulation code to test reconstruction algorithms and predict overall performance of a large solid angle PET scanner, (4) significant progress in the 3-D reprojection reconstruction algorithm and comparison to the 2-D single-slice algorithm and a 3-D multi-slice rebinning algorithm, (5) performance comparisons of the two PENN-PET scanners, which lead to a design for a large solid angle scanner with a 25-cm axial extent.
Date: November 15, 1991
Creator: Karp, J.S.
Object Type: Report
System: The UNT Digital Library
Simulation studies to evaluate the effect of fracture closure on the performance of naturally fractured reservoirs (open access)

Simulation studies to evaluate the effect of fracture closure on the performance of naturally fractured reservoirs

The study has two principal objectives: (1) To evaluate the effects of fracture closure on the recovery of oil and gas reserves from naturally fractured petroleum or natural gas reservoirs. (2) To evaluate procedures for improving the recovery of these reserves using innovative fluid injection techniques to maintain reservoir pressure and mitigate the impact of fracture closure. The total scope of the study has been subdivided into three main tasks: (1) Baseline studies (non-pressure sensitive fractures); (2)studies with pressure sensitive fractures; and (3) innovative approaches for improving oil recovery.
Date: July 15, 1991
Creator: Dauben, D.L.
Object Type: Report
System: The UNT Digital Library
(Particulate Flow Research Lab) quarterly progress report, July 1, 1991--September 30, 1991 (open access)

(Particulate Flow Research Lab) quarterly progress report, July 1, 1991--September 30, 1991

Research at the Particulate Flow Research Lab continued. In the previous report it was mentioned that an anticipated change in the sphere diameter necessitated a resizing of the chute components. A check has indicated that the increased size has added enough weight to require a re-evaluation of the stresses requiring stronger fasteners. Mathematical formalism is given for the chip radiation model, and signal processing of the radiation received from the transmitting chips has been improved. A prototype apparatus has been designed and built in order to collide two identical spheres at a point in space. 4 figs.
Date: October 15, 1991
Creator: Rosato, A. D.; Dave, R. N.; Fischer, I. S. & Carr, W.
Object Type: Report
System: The UNT Digital Library
Fuel savings in the heavy trucking industry through cool storage (open access)

Fuel savings in the heavy trucking industry through cool storage

Overnight idling wastes considerable amounts of fuel, contributes to noise and air pollution and adds significantly to trucker's operating costs. Costs are increased because of both the fuel wasted and the additional maintenance required on the engine as a result of extended idling. In winter, idling not only allows a resting driver to keep warm but prevents cold weather battery, fuel gelling and engine starting problems. In the summer, however, the only reason for overnight idling is to keep the sleeper compartment habitable for the resting driver and diesel engine idling to accomplish this is a massive overkill. A novel, patented, cool storage system has been developed by the Instatherm Company. This system allows comfortable summer resting conditions for the driver without having to idle the engine or having to start or run any other auxiliary engine. The operating principle is very straightforward -- store cool'' from the truck air conditioning system, while the vehicle is driven on the highway and to use this stored cool'' to air condition the sleeper compartment while the driver rests. 17 figs.
Date: September 15, 1991
Creator: Carr, P.
Object Type: Report
System: The UNT Digital Library
(Coal utilization in India) (open access)

(Coal utilization in India)

Under the Phase II, Alternative Energy Resources Development (AERD) project of the United States Agency for International Development (USAID) and the Government of India (GOI), five collaborative coal projects have been initiated in the areas of: (1) NO{sub x}/SO{sub x} control from coal-fired power plants, (2) slagging combustor development for high-ash Indian coals, (3) characterization of Indian coals for combustion and gasification, (4) diagnostic studies for prediction of power plant life expectancy, and (5) environmental and natural resource analysis of coal cycle. The Pittsburgh Energy Technology Center (PETC) has the implementation responsibility for these projects. The Indian collaborative institutions identified for these projects are the Bharat Heavy Electricals Ltd. (BHEL), Trichy, (Projects 1--4), and the Tata Energy Research Institute (TERI) for Project 5. The Oak Ridge National Laboratory (ORNL) is providing cross-cut technical coordination and support for these five projects.
Date: January 15, 1991
Creator: Krishnan, R.P.
Object Type: Report
System: The UNT Digital Library
The search for the deconfined quark-gluon phase transition using 2 TeV p p collisions; The search for critical phenomena in multifragmentation using 1 GeV/nucleon heavy ion collisions; The development of the solenoidal detector (STAR) for the Relativistic Heavy Ion Collider (RHIC) (open access)

The search for the deconfined quark-gluon phase transition using 2 TeV p p collisions; The search for critical phenomena in multifragmentation using 1 GeV/nucleon heavy ion collisions; The development of the solenoidal detector (STAR) for the Relativistic Heavy Ion Collider (RHIC)

This report discusses: Fermilab experiment 735, a search for the Quark-Gluon plasma; an exclusive study of nuclear fragmentation using the EOS-TPC; and, solenoidal tracker at RHIC.
Date: September 15, 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Quaternary investigation (open access)

Quaternary investigation

The primary purpose of the Quaternary investigation is to provide information on the location and age of Quaternary deposits for use in evaluating the presence or absence of neotectonic deformation or paleoliquefaction features within the Savannah River Site (SRS) region. The investigation will provide a basis for evaluating the potential for capable faults and associated deformation in the SRS vicinity. Particular attention will be paid to the Pen Branch fault.
Date: May 15, 1991
Creator: Stieve, A.
Object Type: Report
System: The UNT Digital Library
Transport of radon and thoron at the earth's surface (open access)

Transport of radon and thoron at the earth's surface

This report covers progress under the current funding period Jan. 1, 1991 to Jan. 1, 1992 and presents the continuation proposal for Jan. 1, 1992 to Jan. 1, 1993. The previous progress report was submitted in May 1990, so activities during the last half of 1990 will also be included. Major activities over the last year have centered on the study of disequilibrium of radon progeny near the earth's surface and the sources of thoron in indoor air. In addition, we have carried out supplemental measurements of radon sorption coefficients in porous materials focusing on the physical mechanism of sorption.
Date: June 15, 1991
Creator: Schery, S.D.
Object Type: Report
System: The UNT Digital Library
Identification and initial assessment of candidate BWR late-phase in-vessel accident management strategies (open access)

Identification and initial assessment of candidate BWR late-phase in-vessel accident management strategies

Work sponsored by the United States Nuclear Regulatory Commission (USNRC) to identify and perform preliminary assessments of candidate BWR (boiling water reactor) in-vessel accident management strategies was completed at Oak Ridge National Laboratory (ORNL) during fiscal year 1990. Mitigative strategies for containment events have been the subject of a companion study at Brookhaven National Laboratory. The focus of this Oak Ridge effort was the development of new strategies for mitigation of the late phase events, that is, the events that would occur in-vessel after the onset of significant core damage. The work began with an investigation of the current status of BWR in-vessel accident management procedures and proceeded through a preliminary evaluation of several candidate new strategies. The steps leading to the identification of the candidate strategies are described. The four new candidate late-phase (in-vessel) accident mitigation strategies identified by this study and discussed in the report are: (1) keep the reactor vessel depressurized; (2) restore injection in a controlled manner; (3) inject boron if control blade damage has occurred; and (4) containment flooding to maintain core and structural debris in-vessel. Additional assessments of these strategies are proposed.
Date: April 15, 1991
Creator: Hodge, S.A.
Object Type: Article
System: The UNT Digital Library
Varied line-space gratings and applications (open access)

Varied line-space gratings and applications

This paper presents a straightforward analytical and numerical method for the design of a specific type of varied line-space grating system. The mathematical development will assume plane or nearly-plane spherical gratings which are illuminated by convergent light, which covers many interesting cases for synchrotron radiation. The gratings discussed will have straight grooves whose spacing varies across the principal plane of the grating. Focal relationships and formulae for the optical grating-pole-to-exist-slit distance and grating radius previously presented by other authors will be derived with a symbolic algebra system. It is intended to provide the optical designer with the tools necessary to design such a system properly. Finally, some possible advantages and disadvantages for application to synchrotron to synchrotron radiation beamlines will be discussed.
Date: July 15, 1991
Creator: McKinney, W.R.
Object Type: Article
System: The UNT Digital Library
Laboratory directed research and development (open access)

Laboratory directed research and development

The purposes of Argonne's Laboratory Directed Research and Development (LDRD) Program are to encourage the development of novel concepts, enhance the Laboratory's R D capabilities, and further the development of its strategic initiatives. Among the aims of the projects supported by the Program are establishment of engineering proof-of-principle''; development of an instrumental prototype, method, or system; or discovery in fundamental science. Several of these project are closely associated with major strategic thrusts of the Laboratory as described in Argonne's Five Year Institutional Plan, although the scientific implications of the achieved results extend well beyond Laboratory plans and objectives. The projects supported by the Program are distributed across the major programmatic areas at Argonne. Areas of emphasis are (1) advanced accelerator and detector technology, (2) x-ray techniques in biological and physical sciences, (3) advanced reactor technology, (4) materials science, computational science, biological sciences and environmental sciences. Individual reports summarizing the purpose, approach, and results of projects are presented.
Date: November 15, 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Emittance measurement in a magnetic field (open access)

Emittance measurement in a magnetic field

Emittance can be measured by intercepting an electron beam on a range thick plate and then observing the expansion of beamlets transmitted through small holes. The hole size is selected to minimize space charge effects. In the presence of a magnetic field the beamlets have a spiral trajectory and the usual field free formulation must be modified. To interpret emittance in the presence of a magnetic field an envelope equation is derived in the appropriate rotating frame. 1 ref.
Date: April 15, 1991
Creator: Boyd, J.K.
Object Type: Article
System: The UNT Digital Library