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Probability based load criteria for the design of nuclear structures: a critical review of the state-of-the-art (open access)

Probability based load criteria for the design of nuclear structures: a critical review of the state-of-the-art

Structures for nuclear power plant facilities must be designed to withstand safely and effectively all kinds of loads and load combinations that may be expected to occur during their lifetime. The traditional methods of structural design attempt to account for the inevitable variability in the loads, material strengths, in-service environments, and fabrication process, etc., through the use of safety factor, allowable stresses or load and resistance factors. These approaches may result in an unknown and nonuniform reliability because of the subjective manner in which the safety factors have been determined. The stochastic nature loads and the uncertainties in material properties dictate a probabilistic approach for a rational assessment of structural safety and performance. This report presents: an in-depth review of the state-of-the-art pertaining to probability-based analysis and design of civil engineering structures; basis for extending existing probability-based methods to seismic category I nuclear structures; and the availability of the pertinent data required to perform probabilistic analysis for seismic category I nuclear structures.
Date: April 1, 1981
Creator: Shinozuka, M.; Ellingwood, B.R.; Wang, P.C.; Meyer, C.; Wen, Y.K.; Kao, S. et al.
Object Type: Report
System: The UNT Digital Library
Polarized negative ions (open access)

Polarized negative ions

This paper presents a survey of methods, commonly in use or under development, to produce beams of polarized negative ions for injection into accelerators. A short summary recalls how the hyperfine interaction is used to obtain nuclear polarization in beams of atoms. Atomic-beam sources for light ions are discussed. If the best presently known techniques are incorporated in all stages of the source, polarized H/sup -/ and D/sup -/ beams in excess of 10 ..mu..A can probably be achieved. Production of polarized ions from fast (keV) beams of polarized atoms is treated separately for atoms in the H(25) excited state (Lamb-Shift source) and atoms in the H(1S) ground state. The negative ion beam from Lamb-Shift sources has reached a plateau just above 1 ..mu..A, but this beam current is adequate for many applications and the somewhat lower beam current is compensated by other desirable characteristics. Sources using fast polarized ground state atoms are in a stage of intense development. The next sections summarize production of polarized heavy ions by the atomic beam method, which is well established, and by optical pumping, which has recently been demonstrated to yield very large nuclear polarization. A short discussion of proposed ion sources for …
Date: April 1, 1981
Creator: Haeberli, W.
Object Type: Article
System: The UNT Digital Library
In support of Heber Ethanol Fuel Facility, Imperial Valley, California. Quarterly report No. 1, December 1980-February 1981 (open access)

In support of Heber Ethanol Fuel Facility, Imperial Valley, California. Quarterly report No. 1, December 1980-February 1981

Progress is reported on the following tasks and issues: geothermal resource evaluation, process engineering, marketing, environmental concerns, and permit processing and legal issues. (MHR)
Date: April 1, 1981
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Fracture and hydrology data from field studies at Stripa, Sweden (open access)

Fracture and hydrology data from field studies at Stripa, Sweden

The purpose of this report is to present the basic fracture and hydrology data collected as part of the joint LBL-KBS fracture hydrology program at Stripa, Sweden. A detailed description of the fracture-core logging and hydrology borehole testing procedures is included as well as a description of how the fracture and hydrology data were coded and organized. Based on this coding a series of computer data files for the fracture and hydrology borehole data have been constructed and these are described in detail. The fracture data file for one borehole is presented as an example in an appendix along with all of the raw and some partially processed and analyzed fracture hydrology data files. A detailed description of how this data will be analyzed to develop a thorough understanding of the fracture system and hydrogeologic characteristics of the Stripa site is presented.
Date: April 1, 1981
Creator: Gale, J.E.
Object Type: Report
System: The UNT Digital Library
Cermets and method for making same (open access)

Cermets and method for making same

The present invention is directed to a method for making a wide variety of general-purpose cermets and for radioactive waste disposal from ceramic powders prepared from urea-dispersed solutions containing various metal values. The powders are formed into a compact and subjected to a rapid temperature increase in a reducing atmosphere. During this reduction, one or more of the more readily reducible oxides in the compact is reduced to a selected substoichiometric state at a temperature below the eutectic phase for that particular oxide or oxides and then raised to a temperature greater than the eutectic temperature to provide a liquid phase in the compact prior to the reduction of the liquid phase forming oxide to solid metal. This liquid phase forms at a temperature below the melting temperature of the metal and bonds together the remaining particulates in the cermet to form a solid polycrystalline cermet.
Date: April 1, 1981
Creator: Aaron, W. S.; Kinser, D. L. & Quinby, T. C.
Object Type: Patent
System: The UNT Digital Library
Small scale hydroelectric power potential in Nevada: a preliminary reconnaissance survey (open access)

Small scale hydroelectric power potential in Nevada: a preliminary reconnaissance survey

This preliminary reconnaissance survey is intended to: develop a first estimate as to the potential number, location and characteristics of small-scale (50 kW to 15 MW) hydroelectric sites in Nevada; provide a compilation of various Federal and state laws and regulations, including tax and financing regulations, that affect small-scale hydroelectric development and provide information on sources of small-scale hydroelectric generation hardware and consultants/ contractors who do small scale hydroelectric work. The entire survey has been conducted in the office working with various available data bases. The site survey and site evaluation methods used are described, and data are tabulated on the flow, power potential, predicted capital expenditures required, etc. for 61 potential sites with measured flows and for 77 sites with derived flows. A map showing potential site locations is included. (LCL)
Date: April 1, 1981
Creator: Cochran, G.F.; Fordham, J.W.; Richard, K. & Loux, R.
Object Type: Report
System: The UNT Digital Library
Environmental assessment for Kelley Hot Spring geothermal project: Kelley Hot Spring Agricultural Center (open access)

Environmental assessment for Kelley Hot Spring geothermal project: Kelley Hot Spring Agricultural Center

The environmental impacts of an integrated swine production unit are analyzed together with necessary ancillary operations deriving its primary energy from a known geothermal reservoir in accordance with policies established by the National Energy Conservation Act. This environmental assessment covers 6 areas designated as potentially feasible project sites, using as the basic criteria for selection ground, surface and geothermal water supplies. The six areas, comprising +- 150 acres each, are within a 2 mile radius of Kelley Hot Springs, a known geothermal resource of many centuries standing, located 16 miles west of Alturas, the county seat of Modoc County, California. The project consists of the construction and operation of a 1360 sow confined pork production complex expandable to 5440 sows. The farrow to finish system for 1360 sows consists of 2 breeding barns, 2 gestation barns, 1 farrowing and 1 nursery barn, 3 growing and 3 finishing barns, a feed mill, a methane generator for waste disposal and water storage ponds. Supporting this are one geothermal well and 1 or 2 cold water wells, all occupying approximately 12 acres. Environmental reconnaissance involving geology, hydrology, soils, vegetation, fauna, air and water quality, socioeconomic, archaelogical and historical, and land use aspects were …
Date: April 1, 1981
Creator: Neilson, J.A.
Object Type: Report
System: The UNT Digital Library
New Jersey State Briefing Book for low-level radioactive waste management (open access)

New Jersey State Briefing Book for low-level radioactive waste management

The New Jersey state Briefing Book is one of a series of State briefing books on low-level radioactive waste management practices. It has been prepared to assist state and federal agency officials in planning for safe low-level radioactive waste disposal. The report contains a profile of low-level radioactive waste generators in New Jersey. The profile is the result of a survey of NRC licensees in New Jersey. The briefing book also contains a comprehensive assessment of low-level radioactive waste management issues and concerns as defined by all major interested parties including industry, government, the media, and interest groups. The assessment was developed through personal communications with representatives of interested parties, and through a review of media sources. Lastly, the briefing book provides demographic and socioeconomic data and a discussion of relevant government agencies and activities, all of which may impact waste management practices in New Jersey.
Date: April 1, 1981
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Pennsylvania State Briefing Book for low-level radioactive waste management (open access)

Pennsylvania State Briefing Book for low-level radioactive waste management

The Pennsylvania State Briefing Book is one of a series of state briefing books on low-level radioactive waste management practices. It has been prepared to assist state and federal agency officials in planning for safe low-level radioactive waste disposal. The report contains a profile of low-level radioactive waste generators in Pennsylvania. The profile is the result of a survey of NRC licensees in Pennsylvania. The briefing book also contains a comprehensive assessment of low-level radioactive waste management issues and concerns as defined by all major interested parties including industry, government, the media, and interest groups. The assessment was developed through personal communications with representatives of interested parties, and through a review of media sources. Lastly, the briefing book provides demographic and socioeconomic data and a discussion of relevant government agencies and activities, all of which may impact waste management practices in Pennsylvania.
Date: April 1, 1981
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Solar cogeneration: Cimarron River station, Central Telephone and Utilities-Western Power (open access)

Solar cogeneration: Cimarron River station, Central Telephone and Utilities-Western Power

The site-specific conceptual design progress is described for a solar central receiver cogeneration facility at a Kansas utility. The process is described which led to the selection of the preferred solar cogeneration facility. The status of the conceptual design is presented. The evaluation of system performance is described. A test program is described that is to determine the magnitude of impact that local environmental factors have on collector system performance and to measure the direct normal insolation at the cogeneration facility site. The system specification is appended. (LEW)
Date: April 1, 1981
Creator: Harder, J. E.
Object Type: Report
System: The UNT Digital Library
Coal-feeder development. Second quarterly technical progress report, January-March 1980 (open access)

Coal-feeder development. Second quarterly technical progress report, January-March 1980

The pilot-scale piston-feeder development is progressing satisfactorily and should proceed as planned. The bench scale testing of components, sub-system and critical areas continued to provide very useful information in support of the development of the complete feeder. The K30M seals and polyurethane scrapers are showing very promising results. The components development facility is being upgraded and testing at the bench scale level should be vigorously perused. The upgrading of the pilot scale feeder and its system will be emphasized during the next quarter to perform feeder capabilities and limitations testing. No progress on the 5.5-in. diameter pilot scale screw feeder has been made because IRRI is waiting decision from METC as to when the feeder can be installed on the 42-in. gas producer.
Date: April 1, 1981
Creator: Mistry, D.K.
Object Type: Report
System: The UNT Digital Library
Ohio State Briefing Book for low-level radioactive waste management (open access)

Ohio State Briefing Book for low-level radioactive waste management

The Ohio State Briefing Book is one of a series of state briefing books on low-level radioactive waste management practices. It has been prepared to assist state and federal agency officials in planning for safe low-level radioactive waste disposal. The report contains a profile of low-level radioactive waste generators in Ohio. The profile is the result of a survey of NRC licensees in Ohio. The briefing book also contains a comprehensive assessment of low-level radioactive waste management issues and concerns as defined by all major interested parties including industry, government, the media, and interest groups. The assessment was developed through personal communications with representatives of interested parties, and through a review of media sources. Lastly, the briefing book provides demographic and socioeconomic data and a discussion of relevant government agencies and activities, all of which may impact waste management practices in Ohio.
Date: April 1, 1981
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Method and apparatus for recovering unstable cores (open access)

Method and apparatus for recovering unstable cores

A method and apparatus suitable for stabilizing hydrocarbon cores are given. Such stabilized cores have not previously been obtainable for laboratory study, and such study is believed to be required before the hydrate reserves can become a utilizable resource. The apparatus can be built using commercially available parts and is very simple and safe to operate.
Date: April 1, 1981
Creator: McGuire, P. L. & Barraclough, B. L.
Object Type: Patent
System: The UNT Digital Library
Infiltration measurements in audit and retrofit programs (open access)

Infiltration measurements in audit and retrofit programs

A model that relates fan pressurization measurements to infiltration values during the heating season is the basis for infiltration estimates in several different audit programs. The model is described and validation results are presented. The model is used in three different audit strategies. The first is an energy audit to determine economically optimal retrofits for residential buildings, based on actual, on-site measurments of key indices of the house. Measurements are analyzed on a microprocessor and retrofit combinations compatible with minimum life-cycle cost and occupant preferences are determined. The second uses graphical techniques to make infiltration calculations while the third is a non-instrumented walk-through audit that was developed as a standard reference in the Residential Conservation Service Program.
Date: April 1, 1981
Creator: Grimsrud, D. T.; Sonderegger, R. C. & Sherman, M. H.
Object Type: Article
System: The UNT Digital Library

[Photograph 2012.201.B0148.0492]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Patricia D. Crisler, (Piedmont)"
Date: April 1, 1981
Creator: Lynn, Renee
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0153.0354]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Downtown commuter Debby Darnell applies for a parking place in the Galleria Garage, scheduled to open July 1st."
Date: April 1, 1981
Creator: Albright, Bob
Object Type: Photograph
System: The Gateway to Oklahoma History
Application of microfabrication technology to thermionic energy conversion. Final report, 1 April 1979-31 March 1981 (open access)

Application of microfabrication technology to thermionic energy conversion. Final report, 1 April 1979-31 March 1981

The first-year effort emphasized study of the kind of microstructures that could improve the performance of thermionic converters. Two ideas considered to have a fair chance of success emerged from this study: (1) use of a very closely spaced diode to eliminate the space-charge limitation of electron flow from emitter to collector, cesium vapor being used to control the work function of the emitter; and (2) use of field emission electrons, injected into a relatively large diode gap from microcathodes built into the collector, to produce ions to neutralize the space charge. The gas in the diode gap would be a mixture of cesium (to control the emitter work function) and xenon to optimize the ionization. A number of schemes were attempted to build closely spaced diodes with spacing in the 1 to 5 ..mu..m range, which overcame the problems of lateral differential expansion, surface irregularities on the electrodes, and heat loss down the pillars holding the gap spacing. Theoretical studies on using field emitter electrons to produce the space charge neutralizing ions showed that this approach was feasible. However, the program was terminated before any experimental work could be initiated in this area.
Date: April 1, 1981
Creator: Brodie, I.; Shepherd, C. & Spindt, C.A.
Object Type: Report
System: The UNT Digital Library
Preliminary assessment of Fort Hood solar cogeneration plant performance (open access)

Preliminary assessment of Fort Hood solar cogeneration plant performance

An analysis has been performed to enable a preliminary assessment of the performance that can be expected of a solar thermal cogeneration system designed to serve a selected group of buildings at Fort Hood, Texas. A central receiver system utilizing a molten salts mixture as the receiver coolant, heat transfer fluid, and storage medium is assumed. The system is to supply a large share of the space heating, air conditioning, domestic hot water, and electricity needs of a 20-building Troop Housing Complex. Principal energy loads are graphed and tabulated, and the principal electric parasitic loads are tabulated and the methodology by which they are estimated is reviewed. The plant model and the performance calculations are discussed. Annual energy displacement results are given. (LEW)
Date: April 1, 1981
Creator: Ator, J.
Object Type: Report
System: The UNT Digital Library
Airborne gamma-ray spectrometer and magnetometer survey: Ukiah quadrangle, California (open access)

Airborne gamma-ray spectrometer and magnetometer survey: Ukiah quadrangle, California

Volume II contains the flight path, radiometric multi-parameter stacked profiles, magnetic and ancillary parameter stacked profiles, histograms, and anomaly maps for the Ukiah Quadrangle in California.
Date: April 1, 1981
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Conceptual design of a solar cogeneration facility at Pioneer Mill Co. , Ltd (open access)

Conceptual design of a solar cogeneration facility at Pioneer Mill Co. , Ltd

Results are reported of a conceptual design study of the retrofit of a solar central receiver system to an existing cogeneration facility at a Hawaii raw sugar factory. Background information on the site, the existing facility, and the project organization is given. Then the results are presented o the work to select the site specific configuration, including the working fluid, receiver concept, heliostat field site, and the determination of the solar facility size and of the role of thermal storage. The system selected would use water-steam as its working fluid in a twin-cavity receiver collecting sunlight from 41,420 m/sup 2/ of heliostat mirrors. The lates version of the system specification is appended, as are descriptions of work to measure site insolation and a site insolation mathematical model and interface data for the local utility. (LEW)
Date: April 1, 1981
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Static reactive power compensators for high-voltage power systems. Final report (open access)

Static reactive power compensators for high-voltage power systems. Final report

A study conducted to summarize the role of static reactive power compensators for high voltage power system applications is described. This information should be useful to the utility system planning engineer in applying static var systems (SVS) to high voltage as (HVAC) systems. The static var system is defined as a form of reactive power compensator. The general need for reactive power compensation in HVAC systems is discussed, and the static var system is compared to other devices utilized to provide reactive power compensation. Examples are presented of applying SVS for specific functions, such as the prevention of voltage collapse. The operating principles of commercially available SVS's are discussed in detail. The perormance and active power loss characteristics of SVS types are compared.
Date: April 1, 1981
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Equipment for drilling miniature holes (open access)

Equipment for drilling miniature holes

Miniature holes are produced on 16 different types of mechanical drilling equipment. Each equipment type has significant advantages for a specific type of part. The basic capabilities vary greatly between equipment types. Some produce very precise holes and others produce very high volumes of commercial tolerance holes. At the present time machines are available for mechanicaly drilling up to 100,000 miniature holes per hour. Lasers currently are drilling as many as 15,000,000 ultra-miniature holes per hour.
Date: April 1, 1981
Creator: Gillespie, L K
Object Type: Article
System: The UNT Digital Library
Air separation by the Moltox process (open access)

Air separation by the Moltox process

The report describes results of a development program on a new and energy saving process for air separation. The Moltox process involves reversibly reacting oxygen in air with a recirculating salt solution, such that oxygen is extracted without depressurizing the remaining nitrogen. Energy savings of approximately 50% are indicated for this process compared to conventional cryogenic air separation. The development program consisted of design, construction, and operation of a 6 liter/minute pilot plant; optimization of the process flowsheet through computer modelling; investigation of engineering aspects of the process including corrosion, safety, and NO/sub x/ generation; and an economic comparison to conventional cryogenic practice. All objectives were satisfactorily achieved except for continuous operation of the pilot plant, and the modifications necessary to achieve that have been identified. Economically the Moltox process shows a substantial advantage over large scale cryogenic plants which are powered by fuel vice electricity.
Date: April 1, 1981
Creator: Erickson, D. C.
Object Type: Report
System: The UNT Digital Library
Airborne gamma-ray spectrometer and magnetometer survey, Medford Quadrangle Oregon. Final report (open access)

Airborne gamma-ray spectrometer and magnetometer survey, Medford Quadrangle Oregon. Final report

An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Medford, Oregon, map area. Traverse lines were flown in an east-west direction at a line spacing of three miles. Tie lines were flown north-south approximately twelve miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 2925 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.
Date: April 1, 1981
Creator: unknown
Object Type: Report
System: The UNT Digital Library