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Heat transfer research and power cycle transient modeling

Description: Fine axial flutes enhance heat transfer in vertical shell-and-tube exchangers with water inside the tubes and ammonia evaporating or condensing in layer flow on the shell side. Single-tube experiments with R-11 and ammonia indicate local shell-side coefficients 3 to 5 times those for corresponding smooth tubes. Single-tube experiments with water indicate that at moderate velocities the tube-side coefficients are enhanced by a factor equal to the ratio of fluted-to-smooth surface areas while the… more
Date: March 23, 1977
Creator: Rothfus, R.R. & Neuman, C.P.
Partner: UNT Libraries Government Documents Department
open access

Chemical durability of zinc borosilicate nuclear waste glass

Description: Chemical durability is of primary concern when evaluating the safety of waste glass. For this reason, testing the leachability of waste glasses is a fundamental part of their development and characterization. The leachability is also very much a function of glass composition as previously discussed. This discussion is limited to a representative waste glass composition, a high-zinc borosilicate formulation which has been studied in detail by Battelle Pacific Northwest Laboratories. (GHT)
Date: March 1, 1977
Creator: Westsik, Jr, J. H. & Mendel, J. E.
Partner: UNT Libraries Government Documents Department
open access

Precision surveying system for PEP

Description: A semi-automatic precision surveying system is being developed for PEP. Reference elevations for vertical alignment will be provided by a liquid level. The short range surveying will be accomplished using a Laser Surveying System featuring automatic data acquisition and analysis.
Date: March 16, 1977
Creator: Gunn, J.; Lauritzen, T.; Sah, R. & Pellisier, P. F.
Partner: UNT Libraries Government Documents Department
open access

Oak Ridge analytical program. [For National Uranium Reserves Evaluation Program]

Description: The analytical procedures were selected for use based on the elements to be determined and relative accuracy and cost. Uranium is determined by fluorescence spectroscopy, mass spectrometry, and neutron activation. As and Se, frequently associated with U, are determined by flameless atomic absorption spectroscopy. Water samples are analyzed by emission spectroscopy. In addition electrical conductivity and sulfate ion concentrations are determined in water samples. The sample flow, data flow, and… more
Date: March 1, 1977
Creator: Cagle, G. W.
Partner: UNT Libraries Government Documents Department
open access

Investigations of the inductively coupled plasma source for analyzing NURE water samples at the Los Alamos Scientific Laboratory

Description: A 3.4-meter direct-reading spectrograph is being used with an inductively coupled plasma source for the simultaneous determination of Ag, Bi, Cd, Cu, Nb, Ni, Pb, Sn, and W in water samples. We have attached a small digital computer to the system in order to obtain intensity data on each element once a second. After the intensities during a run on a sample have stabilized, the computer records the intensity data and outputs the average concentration for each element. To approach the published de… more
Date: March 1, 1977
Creator: Apel, C. T.; Bieniewski, T. M.; Cox, L. E. & Steinhaus, D. W.
Partner: UNT Libraries Government Documents Department
open access

Data verification procedures. [For National Uranium Resource Evaluation Program]

Description: The large amount of field and laboratory data collected by the Hydrogeochemical and Stream Sediment Reconnaissance Program contractors of the National Uranium Resource Evaluation (NURE) Program necessitates the use of computerized data verification procedures. The Oak Ridge National Laboratory data verification procedures consist of computerized checks of the validity of codes for every field of data reported. The verification procedures are part of an overall data evaluation system. Sample loc… more
Date: March 1, 1977
Creator: Kane, V. E.
Partner: UNT Libraries Government Documents Department
open access

Study of fuel block collision in HTGR core

Description: In analyzing the response of loosely stacked hexagonal blocks during a seismic event in the High-Temperature Gas Cooled Reactor (HTGR), a spring-mass-damper model was used to approximate the velocity and the impact configuration of core blocks and a finite element model was used to estimate the dynamic stress, the coefficient of restitution, and the contact time for the impact of two or more blocks. The latter approach is discussed.
Date: March 1, 1977
Creator: Tzung, F. K.
Partner: UNT Libraries Government Documents Department
open access

3-dimensional beam scanning system for particle radiation therapy

Description: In radiation therapy treatment volumes up to several liters have to be irradiated. Today's charged particle programs use ridge filters, scattering foils, occluding rings collimators and boluses to shape the dose distribution. An alternative approach, scanning of a small diameter beam, is analyzed and tentative systems specifications are derived. Critical components are scheduled for fabrication and testing at LBL.
Date: March 1977
Creator: Leemann, C.; Alonso, J.; Grunder, H.; Hoyer, E.; Kalnins, G.; Rondeau, D. et al.
Partner: UNT Libraries Government Documents Department
open access

Crossed molecular beam study rotational excitation of HD(J = 0. -->. 1) in collisions with He. [19. 3 MeV]

Description: The observation is reported of rotationally inelastic scattering in the He + HD system in a crossed molecular beam experiment conducted at a collision energy of 19.3 MeV, low enough that only the J = 0 ..-->.. J = 1 rotational excitation occurs. (GHT)
Date: March 1, 1977
Creator: Farrar, J. M.; Burgmans, A. L. J.; Parson, J. M.; Walker, R. B. & Lee, Y. T.
Partner: UNT Libraries Government Documents Department
open access

Reflectance measurements of vacuum-deposited aluminum films

Description: An integrating sphere technique was used for the measurement of the total and specular reflectance of vacuum-evaporated aluminum films. The appearance of the surface to the naked eye was relatively insensitive to the total reflectance, but was very closely related to the fraction of reflected light that was specularly reflected. Milky or cloudy-appearing aluminum films had a low specular reflectance while mirror-like films had a high specular reflectance. Surface specular reflectance was in tur… more
Date: March 24, 1977
Creator: Sherman, D. M.
Partner: UNT Libraries Government Documents Department
open access

Computer networks in future accelerator control systems

Description: Some findings of a study concerning a computer based control and monitoring system for the proposed ISABELLE Intersecting Storage Accelerator are presented. Requirements for development and implementation of such a system are discussed. An architecture is proposed where the system components are partitioned along functional lines. Implementation of some conceptually significant components is reviewed.
Date: March 1, 1977
Creator: Dimmler, D G
Partner: UNT Libraries Government Documents Department
open access

Interrelations of compositions, transformation kinetics, morphology, and mechanical properties of alloy steels

Description: The strong influence of the fine-scale microstructural features on mechanical properties has become increasingly evident during the past decade. This is particularly true for fracture toughness of quenched and tempered alloy steels. Large differences in microstructure can be produced by isothermal, rather than athermal, treatments in the bainite and upper martensite temperature ranges. The kinetics of transformation as well as the kinds and volume fractions of transformation products can be var… more
Date: March 1, 1977
Creator: Parker, E. R.
Partner: UNT Libraries Government Documents Department
open access

Use of the n,p scattering reaction for neutron flux measurements

Description: Several contemporary proton-recoil detectors are described and compared. These detectors have been used for neutron-spectrum measurements over various portions of the 10-keV-to-20-MeV energy range. Several factors which limit the accuracy of the results are compared quantitatively. General suggestions are given for setting and using standard cross sections and for future developments using the n,p scattering reaction.
Date: March 22, 1977
Creator: Czirr, J. B.
Partner: UNT Libraries Government Documents Department
open access

Uranium geochemical survey of the Crystal City--Beeville Quadrangles, Texas

Description: An area in south Texas of 33,000 km/sup 2/ was sampled in order to test and demonstrate the applicability of the two-phase regional geochemical survey techniques developed for the National Uranium Resource Evaluation Project. In the first phase stream sediment and stream water samples are collected from basins of approximately 260 km/sup 2/, whereas in the second phase the samples are collected from basins of approximately 26 km/sup 2/. Well samples are taken at 10 mile spacings in phase I and … more
Date: March 1, 1977
Creator: Butz, T. R.
Partner: UNT Libraries Government Documents Department
open access

Bevalac Minibeam Facility

Description: The Minibeam Facility is a biomedical heavy-ion beam area at the Bevalac designed to satisfy the following requirements: (1) provide a beam incident in a vertical plane for experiments where a horizontal apparatus significantly increases the convenience of performing an experiment or even determines its feasibility; (2) provide an area that is well shielded with respect to electronic interference so that microvolt signals can be detected with acceptable signal-to-noise ratios; (3) provide a bea… more
Date: March 1, 1977
Creator: Schimmerling, W.; Alonso, J.; Morgado, R.; Tobias, C. A.; Grunder, H.; Upham, F. T. et al.
Partner: UNT Libraries Government Documents Department
open access

Role of space charge in beam transport. [Review]

Description: Space charge as it affects ion beam transport is reviewed. The approach here will be to derive beam-current criteria for divergence from space charge, review recent theoretical models for fractional space-charge neutralization, discuss space-charge-related observations on ion-beam transport in a specific experimental system, and briefly note several applications using space charge. Experimental measurements of effective space charge are discussed for a dc ion-source test stand using a 90/sup 0/… more
Date: March 25, 1977
Creator: Osher, J. E.
Partner: UNT Libraries Government Documents Department
open access

Fluidized combustion of beds of large, dense particles in reprocessing HTGR fuel

Description: Fluidized bed combustion of graphite fuel elements and carbon external to fuel particles is required in reprocessing high-temperature gas-cooled reactor (HTGR) cores for recovery of uranium. This burning process requires combustion of beds containing both large particles and very dense particles as well as combustion of fine graphite particles which elutriate from the bed. Equipment must be designed for optimum simplicity and reliability as ultimate operation will occur in a limited access ''ho… more
Date: March 1, 1977
Creator: Young, D. T.
Partner: UNT Libraries Government Documents Department
open access

OTEC Bifouling and Corrosion Program. [Research program]

Description: The Energy Research and Development Administration (ERDA) is sponsoring a program to explore the possibilities for beneficially using the temperature difference between warm surface water of the tropical oceans and the deeper colder water to operate a heat engine. One of the major technical hurdles that must be crossed to bring this source of energy into commercial use is the solution to biofouling, corrosion and deposition reactions that are expected to reduce heat transfer efficiency. In Janu… more
Date: March 1, 1977
Creator: Perrigo, L D & Jensen, G A
Partner: UNT Libraries Government Documents Department
open access

Hydrogeochemical and stream-sediment reconnaissance program at LLL

Description: The Lawrence Livermore Laboratory (LLL) is conducting a Hydrogeochemical and Stream-Sediment Reconnaissance (HSSR) survey in support of ERDA's National Uranium Resource Evaluation (NURE) program. Included in the LLL portion of this survey are seven western states (Arizona, California, Idaho, Nevada, Oregon, Utah, and Washington). Similar surveys are being carried out in the rest of the continental United States, including Alaska, as part of a systematic nationwide study of the distribution of u… more
Date: March 1, 1977
Creator: Tinney, J. F.
Partner: UNT Libraries Government Documents Department
open access

Fixation of Hanford sludge by conversion to glass

Description: Redox and Purex process sludges stored at Hanford can be converted to durable borosilicate glasses by melting at 1100--1400/sup 0/C charges containing 30 to 40 weight percent washed, dried sludge, 45 to 60 weight percent SiO/sub 2/, 5 to 15 weight percent B/sub 2/O/sub 3/, 0 to 10 weight percent Na/sub 2/O, 0 to 5 weight percent Li/sub 2/O, and 0 to 5 weight percent TiO/sub 2/. Leach rates in deionized water (25/sup 0/C) for the glasses range from about 10/sup -7/ to 10/sup -5/ g/cm/sup 2/-day.
Date: March 1, 1977
Creator: Kupfer, M. J. & Schulz, W. W.
Partner: UNT Libraries Government Documents Department
open access

Radiological safety design considerations for a laser-fusion facility

Description: Detailed neutronics and photonics calculations have been performed for analyzing prompt and residual radiations and required shielding associated with the design of a laser-fusion facility with a nominal yield of 10/sup 19/ neutrons per D--T burn pulse. The standard Livermore Monte Carlo codes and nuclear data cross section libraries were used in calculations. The Bateman equation was used to calculate the accumulation and decay of radionuclide chain products. A number of activation sensitivity… more
Date: March 17, 1977
Creator: Singh, M. S.
Partner: UNT Libraries Government Documents Department
open access

Laser Raman spectrometric determination of oxy-anions in nuclear waste materials

Description: Oxy-anions in complex nuclear process-waste materials are being determined by laser Raman spectrometry (LRS). The double internal-standard technique developed by Marston is applied to the simultaneous determination of up to x anions in alkaline solutions. The method of Marston has been extended to solutions prepared from the solids formed in nuclear waste storage tanks. As many as six anions, aluminate, chromate, nitrate, nitrite, phosphate, and sulfate, are simultaneously determined in about o… more
Date: March 1, 1977
Creator: Miller, A. G.
Partner: UNT Libraries Government Documents Department
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