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Analysis of advanced conceptual designs for single-family-sized absorption chillers. Semi-annual report

Description: The objective of the research program is to develop and analyze new concepts for absorption cycles to improve the performance or reduce the cost (or both) of a 3-ton absorption chiller that can be used with solar-collected heat. New refrigerant-absorbent pairs, additives to currently used refrigerant-absorbent pairs, and modifications to the cycle are being investigated. For the initial analyses the use of a fluid at 160 to 230/sup 0/F from a solar collector as a heating source is assumed. In t… more
Date: April 5, 1978
Item Type: Refine your search to only Report
open access

Casting large beryllium ingots

Description: Beryllium casting is a relatively new technology with the successful cast of large ingots being developed during the last decade. In 1961, Rocky Flats initiated a beryllium ingot-sheet fabrication process that included the development of new techniques to consistently cast large sound beryllium ingots. This report reviews the casting technology that was developed to cast these beryllium ingots on a production basis along with some of the remaining technical problems requiring additional develop… more
Date: June 5, 1978
Creator: Corle, Richard R.; Krenzer, Robert W. & Voiles, Kenneth E.
Item Type: Refine your search to only Report
open access

Combining evidence from several samples for testing goodness-of-fit to a location-scale family. Technical report No. 15

Description: Consider the problem of testing goodness-of-fit to a specified location-scale family when evidence is to be combined from several independent samples, from populations with possibly different location and scale parameters. The procedure studied is that of computing standardized residuals from each sample and then combining these into one set to be treated essentially as though they came from one sample. It is shown that the limiting distribution of any location-scale invariant goodness-of-fit s… more
Date: June 5, 1978
Creator: Pierce, D. A.
Item Type: Refine your search to only Report
open access

Core-power and decay-time limits for disabled automatic-actuation of LOFT ECCS

Description: The Emergency Core Cooling System (ECCS) for the LOFT reactor may need to be disabled for modifications or repairs of hardware or instrumentation or for component testing during periods when the reactor system is hot and pressurized, or it may be desirable to enable the ECCS to be disabled without the necessity of cooling down and depressurizing the reactor. LTR 113-47 has shown that the LOFT ECCS can be safely bypassed or disabled when the total core power does not exceed 25 kW. A modified pol… more
Date: June 5, 1978
Creator: Hanson, G.H.
Item Type: Refine your search to only Report
open access

Corrosion of steel tendons used in prestressed concrete pressure vessels

Description: The purpose of this investigation was to determine the corrosion behavior of a high strength steel (ASTM A416-74 grade 270), typical of those used as tensioning tendons in prestressed concrete pressure vessels, in several corrosive environments and to demonstrate the protection afforded by coating the steel with either of two commercial petroleum-base greases or Portland Cement grout. In addition, the few reported incidents of prestressing steel failures in concrete pressure vessels used for co… more
Date: December 5, 1978
Creator: Griess, J. C. & Naus, D. J.
Item Type: Refine your search to only Article
open access

Development and testing of shingle-type solar cell modules. Quarterly report No. 2

Description: The details of a shingle module design which produces in excess of 97 watts/m/sup 2/ of module area at 1 kW/m/sup 2/ insolation and at 60/sup 0/C are reported. This selected design employs a tempered glass coverplate to provide the primary solar cell structural support. The use of the B.F. Goodrich FLEXSEAL roofing system as the outer skin of the shingle substrate provides a high confidence of achieving the 15 year service life goal. The fabrication and testing of a preproduction module of this… more
Date: January 5, 1978
Creator: Shepard, N.F.
Item Type: Refine your search to only Report
open access

Development and testing of shingle-type solar cell modules. Quarterly report No. 3

Description: The fabrication and testing phase of the program to develop a shingle-type solar cell module is well underway. Six modules are currently being subjected to a qualification testing program which consists of both thermal cycling and humidity exposures followed by a mechanical integrity test to simulate wind loads. Fabrication of the remainder of the 50 deliverable modules is proceeding.
Date: April 5, 1978
Creator: Shepard, N.F.
Item Type: Refine your search to only Report
open access

Dual topological unitarization -- phenomenological aspect

Description: An assessment is provided on the viability of dual topological unitarization as a practical scheme for organizing and interpreting hadronic phenomena at current machine energies. Previous detailed reviews are complemented, with emphasis on phenomenological aspects and more recent developments. Diffraction scattering, a test of P--f identity hypothesis, the flavor model, the P--f identity versus the Veneziano two-jet picture, and an illustration of the new phenomenology are included. 24 referenc… more
Date: June 5, 1978
Creator: Tan, C. I.
Item Type: Refine your search to only Article
open access

DYNSYL: a general-purpose dynamic simulator for chemical processes

Description: Lawrence Livermore Laboratory is conducting a safeguards program for the Nuclear Regulatory Commission. The goal of the Material Control Project of this program is to evaluate material control and accounting (MCA) methods in plants that handle special nuclear material (SNM). To this end we designed and implemented the dynamic chemical plant simulation program DYNSYL. This program can be used to generate process data or to provide estimates of process performance; it simulates both steady-state … more
Date: September 5, 1978
Creator: Patterson, G.K. & Rozsa, R.B.
Item Type: Refine your search to only Report
open access

Evaluating the reproducibility of environmental radioactivity monitoring data through replicate sample analysis

Description: At the Lawrence Livermore Laboratory, about 10% of the sampling effort in the environmental monitoring program represents replicate sample collection. Replication of field samples was initiated as part of the quality assurance program for environmental monitoring to determine the reproducibility of environmental measurements. In the laboratory these replicates are processed along with routine samples. As all components of variance are included in analysis of such field samples, comparison of th… more
Date: October 5, 1978
Creator: Lindeken, C.L.; White, J.H. & Silver, W. J.
Item Type: Refine your search to only Article
open access

Experimental determination of kerma factors at E/sub n/ approx. = 15 MeV

Description: Experimental values for the kerma per unit fluence at the neutron energy, E/sub n/ = 15 MeV, have been determined for graphite, Mg, and Fe. Ion chambers of small size with walls of these materials were employed, and were filled with a variety of gases--N/sub 2/, CO/sub 2/, Ne, Ar, Kr, and Xe. A calibrated neutron source was employed, allowing a straightforward determination of the kerma per unit fluence.
Date: April 5, 1978
Creator: Goldberg, E.; Slaughter, D.R. & Howell, R.H.
Item Type: Refine your search to only Report
open access

Filter fluorescer experiment on the Argus laser

Description: A filter fluorescer experiment has been installed and operated on the Argus laser system of the Lawrence Livermore Laboratory. X-ray spectra have been measured between 20 and 116 keV from laser produced plasmas. Three spectral cuts were made in this region (20 to 29, 47 to 61 and 80 to 116 keV) with an additional channel providing a measure of the high energy response (> 116 keV) of the third channel. We have measured x-ray spectra from laser shots of 600 to 900 J in 1 ns with intensities of 3 … more
Date: September 5, 1978
Creator: Kornblum, H.N.; Pruett, B.L.; Tirsell, K.G. & Slivinsky, V.M.
Item Type: Refine your search to only Article
open access

Fusion target design

Description: Most detailed fusion target design is done by numerical simulation using large computers. Although numerical simulation is briefly discussed, this lecture deals primarily with the way in which basic physical arguments, driver technology considerations and economical power production requirements are used to guide and augment the simulations. Physics topics discussed include target energetics, preheat, stability and symmetry. A specific design example is discussed.
Date: December 5, 1978
Creator: Bangerter, R.O.
Item Type: Refine your search to only Article
open access

Identification of environmental control technologies for geothermal development in the Imperial Valley of California

Description: Control technologies to manage environmental impacts from geothermal developments in California's Imperial Valley from development to 1985 are discussed. Included are descriptions of methods for managing land subsidence by fluid injection; for preventing undesirable induced seismicity or mitigating the effects of seismic events; for managing liquid wastes through pretreatment or subsurface injection; for controlling H/sub 2/S by dispersal, reinjection, and chemical treatment of effluents; and f… more
Date: October 5, 1978
Creator: Snoeberger, D.F. & Hill, J.H.
Item Type: Refine your search to only Report
open access

Investigation of Clean Water Test Sites for Prototype Turbomachinery

Description: Expanded development of total-flow expander technology in order to obtain efficient energy extraction from the liquid flow component of the geothermal well flow, in addition to steam enthalpy conversion, has been undertaken by the University of California, Lawrence Livermore Laboratory (LLL). The flow conditions necessary for this type of complete system performance characterization are beyond the capabilities of the test facility utilized in the preliminary tests at the LLL hot-water test faci… more
Date: January 5, 1978
Creator: Cerini, Donald J.
Item Type: Refine your search to only Report
open access

Literature review of the saturation state of seawater with respect to calcium carbonate and its possible significance for scale formation on OTEC heat exchangers

Description: An investigation of available data on the saturation state of seawater with respect to calcium carbonate and its possible significance for scale formation on Ocean Thermal Energy Conversion (OTEC) heat exchangers has been carried out. Pertinent oceanographic data is lacking at or near potential OTEC sites for the calculation of the degree of saturation of seawater with respect to calcium carbonate. Consequently, only ''extrapolated'' saturation values can be used. These indicate that near surfa… more
Date: April 5, 1978
Creator: Morse, J. W.; de Kanel, J. & Craig, Jr., H. L.
Item Type: Refine your search to only Report
open access

LOFT reactor vessel head instrument penetration, flange thermal analysis

Description: A redesign of the LOFT instrument penetration necessitated a reanalysis of the thermal conditions existing in the nozzle and flange during a Loss of Coolant Experiment (LOCE). The maximum temperature gradient existing in the instrument flange will be used to determine the thermal stresses and maximum number of allowable cycles for the instrument flange. Based upon the specification and thermal conditions predicted by RELAP4/MOD5, the maximum temperature gradient through the flange will not exce… more
Date: May 5, 1978
Creator: Howell, S. K.
Item Type: Refine your search to only Report
open access

Materials considerations for inertially-confined fusion reactors (ICFR)

Description: This paper discusses some of the material considerations for inertially confined fusion reactors. A comparison of the material considerations for inertially confined reactors is made with those of magnetically confined reactors. The lithium fall reactor concept is used as an example of the freedom from constraints intrinsic to inertially-confined fusion reactors.
Date: June 5, 1978
Creator: Hovingh, J.
Item Type: Refine your search to only Article
open access

Preliminary definition of Barstow standard cloud model

Description: The motion of cloud shadows across a collector field for a central receiver solar power plant can affect the design of such a facility. Cloud models were developed to be used for basis of design in technology areas. The first effect, that of the temperature gradient, is simulated by postulating the worst case cloud situation. The cyclic effects require realistic cloud shadow time histories for simulation. Cloud shadow models were developed to determine probable cloud type, the cloud area and sh… more
Date: April 5, 1978
Item Type: Refine your search to only Report
open access

Review of biological monitoring programs at nuclear facilities. [Monitoring of animals at DOE facilities to determine exposure pathways]

Description: Biological monitoring programs, as well as relevant radioecological research studies, are reviewed at specific Department of Energy facilities; the program at Oak Ridge National Laboratory is discussed in detail. The biological measurements that are being used for interpreting the impact of a facility on its surrounding environment and nearby population are given. Suggestions which could facilitate interlaboratory comparison studies are presented.
Date: June 5, 1978
Creator: Quintana, L. R.; Oakes, T. W. & Shank, K. E.
Item Type: Refine your search to only Article
open access

Solar central receiver prototype heliostat. Interim technical progress report

Description: The objective of Phase I of this project is to support the Solar Central Receiver Power Plant research, development and demonstration effort by: (1) Establishment of a heliostat design, with associated manufacturing, assembly, installation and maintenance approaches, that, in quantity production will yield significant reductions in capital and operating costs over an assumed 30 year plant lifetime as compared with existing designs. (2) Identification of needs for near term and further research … more
Date: April 5, 1978
Item Type: Refine your search to only Report
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