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Thirty years at Pajarito Canyon Site
A brief historical account of the critical experiments at the Pajarito Canyon site at Los Alamos from the 1940s to the present is presented. Numerous photographs are included.
Date:
March 1, 1978
Creator:
Paxton, H.C.
Object Type:
Report
System:
The UNT Digital Library
Compendium of energy-dependent sensitivity profiles for the TRX-2 thermal lattice
Energy-dependent sensitivity profiles for five responses calculated for the TRX-2 thermal lattice with the ORNL sensitivity code system FORSS are presented here both in graphical form and in SENPRO format. The responses are the multiplication factor, k/sub eff/; the ratio of epithermal-to-thermal captures in /sup 238/U, /sup 28/rho; the ratio of epithermal-to-thermal fissions in /sup 235/U, /sup 25/delta; the ratio of fissions in /sup 238/U to fissions in /sup 235/U, /sup 28/delta; and the ratio of captures in /sup 238/U to fissions in /sup 235/U, CR. A summary table of the total sensitivities is also presented.
Date:
March 1, 1978
Creator:
Tomlinson, E. T.; Lucius, J. L. & Drischler, J. D.
Object Type:
Report
System:
The UNT Digital Library
Geothermal R and D project report for April 1, 1977--September 30, 1977
The Idaho Geothermal Research and Development Program was initiated in 1973. The program's mission has been to improve the technology necessary to utilize geothermal fluids of moderate temperature--fluids of about 150/sup 0/C or 300/sup 0/F. This report discusses the progress from April to September 1977, during which time an injection well was drilled and the design of a 5000-kW(e) pilot power plant was completed. Manufacturers began fabricating heat exchangers and condensers for the power plant and a cooling tower to dissipate 40 MW of heat was ordered.
Date:
March 1, 1978
Creator:
Kunze, J. F.
Object Type:
Report
System:
The UNT Digital Library
Monte Carlo Simulation of Turbulent Atmospheric Transport and Comparisons with Experimental Data. [/Sup 41/Ar Continuously Emitted From Bnl Reactor to Atmosphere]
In a previous paper Peterson presented measurements on the /sup 41/Ar emitted continuously into the atmosphere from a reactor at the Brookhaven National Laboratory. Here, calculated results obtained with the Monte Carlo atmospheric transport model of Watson and Barr are presented and compared with the experimental data. The measured quantities with which comparisons are made are: the position north of Brookhaven where the maximum /sup 41/Ar concentration occurred for specific values of x (east of Brookhaven) and t, time; the standard deviation, sigma/sub y/, of the /sup 41/Ar concentration about the position of maximum concentration for specific values of x and t; and a quantity that is proportional to the maximum /sup 41/Ar concentration for specific values of x and t. The calculated results are in moderately good agreement with the experimental data at most distances (less than or equal to 300 km) and most times for which data are available.
Date:
March 1, 1978
Creator:
Alsmiller, F. S.; Alsmiller, R. G., Jr.; Bertini, H. W. & Begovich, C. L.
Object Type:
Report
System:
The UNT Digital Library
Ultrasonic attenuation as a function of heat treatment and grain size in 79Ni--6Mo--15Fe alloy
A pulse echo ultrasonic technique was used to measure the attenuation coefficient for 79Ni-6Mo-15Fe alloy specimens. The attenuation coefficient was determined using a 25 MHz ultrasonic transducer for specimens which had undergone different time-temperature heat treatments. The ultrasonic attenuation data versus heat treat time was used to assess grain size growth in the specimens.
Date:
March 1, 1978
Creator:
Gieske, J. H.
Object Type:
Report
System:
The UNT Digital Library
Calculation of particulate dispersion in a design-basis tornadic storm from the Babcock and Wilcox Plant, Leechburg, Pennsylvania
A three-dimensional numerical model is used to calculate ground-level air concentration and deposition (due to precipitation scavenging) after a hypothetical tornado strike at the Babcock and Wilcox Plutonium Fabrication Facility at Leechburg, Pennsylvania. Plutonium particles lss than 20 ..mu..m in diameter are assumed to be lifted into the tornadic storm cell by the vortex. The rotational characteristics of the tornadic storm are embedded within the larger mesoscale flow of the storm system. The design-basis translational wind values are based on probabilities associated with existing records of tornado strikes in the vicinity of the plant site. Turbulence exchange coefficients are based on empirical values deduced from experimental data in severe storms and from theoretical assumptions obtained from the literature. The quasi-Lagrangian method of moments is used to model the transport of concentration within a grid cell volume.
Date:
March 1, 1978
Creator:
Pepper, D.W.
Object Type:
Report
System:
The UNT Digital Library
Pressure transient analysis in piping systems including the effects of plastic deformation and cavitation. [PTA-2 code]
Computational methods for analyzing pressure transients in the intermediate heat transport system of a sodium-cooled breeder reactor are being developed at Argonne National Laboratory. Because these systems typically operate at low pressures, thin-walled piping is used. Consequently, the pressure pulses produced by a sodium/water reaction in a steam generator or a pipe break may plastically deform sections of the piping, and rarefaction waves, because of the low operating pressure, may produce cavitation in the system. Both these phenomena have a large effect on the pressure pulses traversing the pipe network and, consequently, on the transient loading on major components. The computer program PTA-1, which includes the effect of plastic deformation of piping, and the computer program PTAC, which includes the effect of cavitation, have previously been validated using available experimental data. A new program, PTA-2, is being developed which combines the capabilities of PTA-1 and PTAC. Comparisons will be shown between PTA-2 predictions and the results of several experiments performed at Stanford Research Institute. In each of these experiments, a pressure pulse caused plastic deformation of a thin-walled pipe, producing a rarefaction wave which then produced a cavitated region in another pipe.
Date:
March 1, 1978
Creator:
Youngdahl, C.K.; Kot, C.A. & Valentin, R.A.
Object Type:
Report
System:
The UNT Digital Library
System for vacuum pouring of epoxy tensile and impact specimens with a study of the behavior of these specimens at 77 K and 293 K. [Epon 828, Epon 871, and Epon curing agent 2]
The purpose of the investigation described in this report was to establish a suitable technique for vacuum pouring of epoxy test specimens and to study the behavior of these specimens at 77 K and 293 K. A series of tensile and impact tests was conducted using specimens made from the following resins: Epon 828, Epon 871, and Epon curing agent Z. These materials are of general interest to designers of magnets for cryogenic service. Some of the applications that may be considered are: structural support, spacing, electrical insulation, and thermal insulation. The epoxies mentioned above were selected for more extensive testing because they have been used successfully, at room temperature in EBT and ORMAK programs in the Fusion Energy Division at Oak Ridge National Laboratory. Liquid nitrogen was chosen over liquid helium because it is less difficult to handle, less expensive, and in most instances physical properties of epoxies seem to change very little from 77 K to 4.2 K. The two main features of the vacuum pouring apparatus are (1) batches can be poured under near-identical conditions, and (2) samples can be handled free from air contamination. Tests of the specimens were carried out at 77 K and 293 …
Date:
March 1, 1978
Creator:
Fitzpatrick, C.M. & Stoddart, W.C.T.
Object Type:
Report
System:
The UNT Digital Library
Experimental Studies of Electron Impact Depopulation of Excited States of Atoms: Application to Laser Development for Fusion and Isotope Separation. Progress Report, January 1, 1977--December 31, 1977
Research on the depopulation of metastable states of rare gas atoms by electron impact is summarized. Superelastic, inelastic, and ionization processes are studied using a crossed electron-atom beams configuration. 17 references. (JFP)
Date:
March 1, 1978
Creator:
Lubell, M. S.
Object Type:
Report
System:
The UNT Digital Library
System for vacuum pouring of epoxy tensile and impact specimens with a study of the behavior of these specimens at 77 K and 293 K
The purpose of the investigation was to establish a suitable technique for vacuum pouring of epoxy test specimens and to study the behavior of these specimens at 77 K and 293 K. A series of tensile and impact tests was conducted using specimens made from the following resins: Epon 828, Epon 871, and Epon curing agent Z. These materials are of general interest to designers of magnets for cryogenic service. Tests of the specimens were carried out at 77 K and 293 K. The 77 K data indicate that tensile strength increases proportionally with the increase of Epon 871 relative to Epon 828. When the mixture includes more than 90% Epon 871, impact testing at 293 K becomes practically impossible due to the rubbery condition of the material. However, when tested at 77 K, this same mixture evinces high tensile strength. When optimum data are sought over a wide range of temperatures, 77 K to 293 K, it appears that a mixture of 70% Epon 871, 30% Epon 828 with 13 pph of curing agent Z or 50% Epon 871, 50% Epon 828 with 15 pph curing agent Z offers the best compromise in tensile strength, modulus of elasticity, and …
Date:
March 31, 1978
Creator:
Fitzpatrick, C.M. & Stoddart, W.C.T.
Object Type:
Report
System:
The UNT Digital Library
Experimental Engineering Section semiannual progress report, March 1-August 31, 1976. Volume 2. Biotechnology and environmental programs
This volume contains the progress report of the biotechnology and environmental programs in the Experimental Engineering Section of the Chemical Technology Division. Research efforts in these programs during this report period have been in five areas: (1) environmental research; (2) centrifugal analyzer development; (3) advanced analytical systems development; (4) bioengineering research; and (5) bioengineering development. Summaries of these programmatic areas are contained in Volume I.
Date:
March 1, 1978
Creator:
Pitt, Jr., W. W. & Mrochek, J. E.
Object Type:
Report
System:
The UNT Digital Library
Investigation and evaluation of geopressured geothermal wells
This group of wells-of-opportunity (WOOs) consists of four reentry candidates located in Southern Louisiana. The four Louisiana wells have penetrated a thick section of deep hot and geopressured Miocene or Oligocene sand. Thus the geologic risk is essentially eliminated. Each of these wells has been abandoned. Particular emphasis was placed on selecting wells which are reported to have been left in such a mechanical condition that the risk of reentry operations is low. Every effort will be made to further check any well chosen for unreported conditions. Description, reentry proecdure, testing procedures, and cost estimates are presented for each well. (MHR)
Date:
March 1, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
E-Division semiannual report. Progress report, June 1--December 31, 1977. [Electronics and Instrumentation Division, LASL]
The status of the programs and projects of the Electronics Division is reported for the period of June through December 1977. The presentation is divided into three sections: Research, Engineering Support, and Technical Services. Each of these sections presents the activities and accomplishments of the corresponding branch within the Division. The primary goal of the Research and Development branch is to advance technology for future applications. The primary goal of the Engineering Support branch is to apply advanced technology to laboratory and material problems. The primary goal of the Technical Services branch is to provide a technical base and support for Laboratory programs. These goals are reflected in this report. Among the subject areas included are the following: radiation detectors, temperature monitoring, electromagnetic probing, Josephson junction switching devices, fiber optics, high-temperature electronics, HVAC systems, microprocessors, fuel cell-powered vehicles, laser fusion.
Date:
March 1, 1978
Creator:
Kelley, P.A. (comp.)
Object Type:
Report
System:
The UNT Digital Library
Deposition of silicon carbide coatings on particles in a fluidized bed using silane and tetramethylsilane: a feasibility study
Deposition of silicon carbide (SiC) coatings from compounds such as methyltrichlorosilane (CH/sub 3/SiCl/sub 3/) results in corrosive chlorine-containing byproducts. The feasibility of depositing coatings from SiH/sub 4/ and Si(CH/sub 3/)/sub 4/, which contain no chlorine, was briefly studied. Coatings of SiC were deposited from Si(CH/sub 3/)/sub 4/ over the temperature range 1025 to 1525/sup 0/C in beds of particles fluidized with either H/sub 2/ or Ar. The densest coatings were deposited at 1025/sup 0/C, but none approached the theoretical density of SiC. A SiC coating was also deposited at 800/sup 0/C from a mixture of SiH/sub 4/, C/sub 2/H/sub 4/, and H/sub 2/.
Date:
March 1, 1978
Creator:
Federer, J.I.
Object Type:
Report
System:
The UNT Digital Library
Ripple bundle divertor for tokamaks
The bundle divertor, designed for density and impurity control, has been successfully applied on the DITE tokamak. In this application it is subject to high stresses and is restricted to short pulses and low toroidal fields. A new version is made possible by fitting the vacuum vessel close to the toroidal coils. This allows the plasma to exist in the outer regions of higher toroidal field ripple. This ripple bundle divertor should operate at lower stresses and for longer pulses at higher magnetic fields.
Date:
March 1, 1978
Creator:
Sheffield, J. & Dory, R.A.
Object Type:
Report
System:
The UNT Digital Library
Meteorological evaluation of multiple reactor contamination probabilities for a Hanford Nuclear Energy Center
The conceptual Hanford energy center is composed of nuclear power plants, hence the name Hanford Nuclear Energy Center (HNEC). Previous topical reports have covered a variety of subjects related to the HNEC including: electric power transmission, fuel cycle, and heat disposal. This report discusses the probability that a radiation release from a single reactor in the HNEC would contaminate other facilities in the center. The risks, in terms of reliability of generation, of this potential contamination are examined by Clark and Dowis.
Date:
March 1, 1978
Creator:
Ramsdell, J.V. & Diebel, D.I.
Object Type:
Report
System:
The UNT Digital Library
Electromagnetic compatibility, tropospheric and ionospheric aspects of SPS MPTS operations
The results of a preliminary study of the effects of operation of a Solar Power Satellite (SPS) on the general performance of terrestrial and space based electromagnetic systems are given. In addition, the effects of a passing high energy Microwave Power Transmission System (MPTS) through the troposphere and through the ionosphere are also considered. The SPS as envisioned will be a satellite system in geosynchronous orbit with a solar array of about 144 square kilometers. The purpose of the SPS is to capture solar energy, convert the radiant energy to microwave energy and transmit it to the earth as a beam by means of a phased array antenna one kilometer in diameter at a frequency of 2.45 GHz. At the surface of the earth, the energy beam will be captured by an antenna about 100 square kilometers which will convert the microwave energy to high voltage ac power for injection into an electrical power network. The impact of SPS operation on the lower atmosphere, the ionosphere, and on operational telecommunication systems, is addressed in a preliminary manner. Topics include (a) further study on the susceptibility of electronic equipment to SPS emissions; (b) further study on the interference potential of SPS …
Date:
March 1, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Longitudinal tuning of the LAMPF 201. 25-MHz linac without space charge. [PARMILA code]
After an accelerator is operational, the simulation models, used in the design phase to study perfect linacs or those with random errors, can be specialized to study the behavior of the actual machine and optimize its performance. This is being done on the Alvarez linac at LAMPF using the PARMILA model. As many of the actual measured physical parameters as possible were incorporated into the code, and it was necessary to include a more comprehensive treatment of the beam dynamics to make the model and experimental observations agree. For example, it is necessary to consider longitudinal and transverse phase space together in the calculations. The modifications to the model, the results of experiments that indicate the validity of the model, and use of the model to optimize the longitudinal tuning of the Alvarez linac are outlined.
Date:
March 1, 1978
Creator:
Jameson, R.A.; Jule, W.E.; Mills, R.S.; Bush, E.D. Jr. & Gluckstern, R.L.
Object Type:
Report
System:
The UNT Digital Library
Brayton isotope power system. Volume II. System evaluation attributes
This volume of the Brayton Isotope Power System, Phase II Plan, contains the self-evaluation by AiResearch, GE, and TECO, addressing Section 3 of The Dynamic Systems Evaluation Criteria and Procedures established by the Department of Energy. These evaluation criteria addresses: Component Feasibility; Flight System Design Performance; GDS Test Results; Reliability and Practicality; Safety; Spacecraft Integration; and Cost and Risk. Included in each of these general categories are several attributes, each of which addresses a separate component, feature, or area of interest related to the power system, its development status, degree of preparedness for proceeding into a flight program, and/or the contractors' performance during Phase I. The key elements which indicate the readiness of a radioisotope power system to progress into a flight qualification program are: an advanced state of development of the power conversion system; demonstrated or exhibited potential for space systems standards of reliability; evident capability of meeting system safety requirements; favorable cost/benefit tradeoff considering projected missions and technology advancement potential; and proven feasibility of fabricating and qualifying a flight system and integrating it with a candidate spacecraft and launch vehicle. As a result of considerable government investment in Brayton system component development, the MHW isotope heat source and …
Date:
March 15, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Plant species on the Department of Energy-Oak Ridge Reservation that are rare, threatened, or of special concern
The need to protect endangered organisms has gained increased awareness during the past decade. These efforts have only recently been expanded to include plants. Lists of candidate species have been compiled for review and status designation by appropriate governmental actions. The Report on Endangered and Threatened Plant Species of the United States presented to Congress by the Secretary of the Smithsonian Institution (U.S. Congress 1975) recommended that the preservation of critical habitats be adopted as a major management practice to ensure the survival of endangered and threatened plant species. In compliance with federal guidelines, plants occurring on the Department of Energy (DOE) Oak Ridge Reservation that are considered rare, threatened, or of special concern have been located, identified, and provided protection (Oak Ridge Operations 1975). At present nine candidate species are known to occur on the area. Efforts are being made to locate additional species that have been casually observed and reported but not verified by voucher specimens. The purpose of this activity is to summarize present knowledge of the occurrence and distribution of threatened and endangered plant species for long-range management decisions of the DOE-Oak Ridge Reservation.
Date:
March 1, 1978
Creator:
Parr, P. D. & Taylor, Jr., F. G.
Object Type:
Report
System:
The UNT Digital Library
Parasites in soil/sludge systems
The potential for the transmission of parasites, such as Entamoeba sp., schistosomes, and nematodes such as Ascaris sp., to man through the use of sewage sludges as fertilizer is reviewed. The eggs of Ascaris have been found to be the most resistant of these parasites to normal sludge treatment methods. Results of studies on the effectiveness of heat and ionizing radiation treatments reported show that a treatment of 55/sup 0/C for 1 hour or more sufficiently reduces the number of viable Ascaris eggs in seeded sludge systems. An absorbed dose of 300 kilorads radiation is more than adequate for the same purpose. However, before an unequivocal statement can be made about the effectiveness of either of these treatments in reducing viable ova in real systems, certain qualifying factors must be investigated. There are conflicting reports on the radiation sensitivities of Ascaris eggs in different stages of development. Also, irradiation of composted sludge using an electron beam was unsuccessful in rendering all naturally-occurring Ascaris ova non-viable, even at 300 kilorads. The significant differences in radiation and heat sensitivities of Ascaris eggs in compost vs liquid systems points out the need to further investigate the effects of moisture levels on these sensitivities.
Date:
March 1, 1978
Creator:
Brandon, J.R.
Object Type:
Report
System:
The UNT Digital Library
Analysis of valve springs from hydrogen compressor at Solvent Refined Coal Plant, Wilsonville, Alabama
Failure of hydrogen compressor valve springs at the Wilsonville, Alabama, Solvent Refined Coal Plant caused a total plant shutdown. Type 304 stainless steel springs had been substituted for two of three alloy X750 springs. Mainly because of their geometry, the type 304 stainless steel springs operated at a higher stress than the proper springs, and it is not surprising that they failed. The only as-fractured surface was on the alloy X750 spring. Edge damage caused by rubbing of the springs against neighboring parts may have played an important role in reducing the life of the springs.
Date:
March 1, 1978
Creator:
King, R. T.; Crouse, R. S.; Leslie, B. C.; Rose, E. T. & Houck, C. W.
Object Type:
Report
System:
The UNT Digital Library
Feasibility investigation and design study of optical well logging methods for high temperature geothermal wells
The objective of this project was exploration of a novel approach to high temperature well logging, based on a system of optical transducers and an optical transmission line both theoretically capable of operation to at least 600/sup 0/C. The scope of the work involved the accomplishment of ten specific tasks. These had as their objective the determination of feasibility, and identification of major problem areas, in the implementation of continuous temperature logging of geothermal wells using optical techniques. The following tasks are reported: literature review and data compilation, measurement of fiber properties production fiber procurement, investigation of methods of fiber termination, cable design and fabrication, and sensor and system studies. (MHR)
Date:
March 1, 1978
Creator:
Swanson, R. K.; Anderson, R. E.; Ash, J. I.; Beissner, R. E. & Smith, V. D.
Object Type:
Report
System:
The UNT Digital Library
Summary of national and international radioactive waste management programs (excluding United States)
This report is divided into two parts. Various national fuel cycle and waste management programs are summarized in tabular form in the first part. The second part of the report gives a nation-by-nation overview of fuel cycle and waste management technologies. Brief summaries on the activities of several international organizations are included. (LK)
Date:
March 1, 1978
Creator:
Harmon, K.M.
Object Type:
Report
System:
The UNT Digital Library