Experimental results show the sensitivity of hydrodynamically generated vertical loads to changes in the drywell pressurization rate, downcomer submergence, and vent-line loss coefficient. Insignificant effects on peak vertical loads were observed when the vent-line loss was varied. Peak vertical loads can be reduced by adding initial drywell overpressure so that the downcomers are partly cleared of water. Spatial variation of pressure at about the time of vent clearing is seen in comparisons of data from locations along the axis of the toroidal wetwell.

A test was made in the 2-Megawatt Plasmajet Facility to obtain experimental data relative to the thermal response of concrete to incident heat flux. 14.6 cm diameter by 8.0 cm long concrete cylinders were positioned in a supersonic flow of heated nitrogen from an arc heater. The end of the concrete cylinders impacted by the flow were subjected to heat fluxes in the range of 0.13 to 0.35 kW/cm/sup 2/. Measurements included cold wall surface heat flux and pressure distributions, surface and indepth temperatures, ablation rates, and surface emission spectrographs. The test was part of the Sandia light water reactor safety research program and complements similar tests made in the Radiant Heat Facility at heat fluxes from 0.03 to 0.12 kW/cm/sup 2/. A description of the tests and a tabulation of test data are included.

The LOFT pressurizer spray and surge line piping was analyzed for a 450/sup 0/F step change in fluid temperature. This transient was chosen to conservatively represent several pressurizer operating transients that had not previously been analyzed. These include temperature transients resulting from a 300/sup 0/F ..delta..T between pressurizer temperature and cold leg temperature, injection of a cooled (70/sup 0/F) slug of stagnant fluid into the hot (540/sup 0/F) spray line piping, and inflow of 100/sup 0/F primary coolant system water into the hot (480/sup 0/F) surge line piping.

Newsletter issued by the Advisory Council for Technical-Vocational Education in Texas discussing news, events, and other relevant information related to technical and vocational education for adults in Texas.

A model for interfacial cohesion is developed which describes the loss in the strength of an interface due to the segregation and adsorption of impurities on it. Distinctions are made between interface separations that occur too rapidly for any significant redistribution of adsorbing matter to take place and separations that are slow enough to allow full adsorption equilibrium. Expressions for the total work of complete decohesion are presented for both cases. The results are applied to well-known model adsorption isotherms and some experimental data for grain boundary adsorption of phosphorus in iron is analyzed with respect to the losses in intergranular cohesion.

The normal mode equation for coupled drift and Alfven waves in a finite-..beta.. nonuniform plasma with a sheared magnetic field is solved, in the slab geometry, to investigate the instability of slow Alfven waves. It is shown, that, besides having an appreciable growth rate, the instability also produces microscopic ''tearing'' of the rational surfaces which has important implications for anomalous transport.

ASTM mechanical property specification verification tests have been conducted on the 2 /sup 1///sub 4/ Cr--1 Mo steel. The base properties have been determined for the steel and calibrations on the thermal expansivity of both the 2 /sup 1///sub 4/ Cr--1 Mo steel and 316 SS for use as loading rings have been completed.

ASTM mechanical property specification verification tests have been conducted on the 2 /sup 1///sub 4/ Cr-1 Mo steel. The base properties have been determined for the steel and calibrations on the thermal expansivity of both the 2 /sup 1///sub 4/ Cr-1 Mo steel and 316 SS for use as loading rings have been completed.

A subjective analysis was made to determine the probability the PSMG generator field breakers would be opened by inadvertent operator action.

The method of Streeter and Wylie was developed to allow calculation of two- and three-dimensional transients using existing one-dimensional ''water-hammer'' codes for waves in fluid piping networks. The method is analyzed in terms of the effective multidimensional finite-difference scheme it generates. Subject to certain modelling restrictions, the method produces a first-order accurate scheme in the linear-acoustic, constant-properties approximation. Despite the fact that conventional multidimensional techniques are far more efficient, the method continues to be used in the engineering community.

This report is the descriptive summary of the Analysis of the Thermal-Hydraulic Behavior in the CRBR Secondary Control Assembly, including Inter-assembly Heat Transfer Effects

This standard provides analytical chemistry methods for the analysis of boron carbide powder and pellets for the following: total C and B, B isotopic composition, soluble C and B, fluoride, chloride, metallic impurities, gas content, water, nitrogen, and oxygen. (DLC)

A new system for year-round collection and storage of solar heated water for heating of buildings has been designed and constructed at the University of Virginia. The system is composed of an energy storage sub-system which stores hot water in an underground pool and of a solar collector sub-system which acts not only to collect solar energy throughout the year but also to limit the evaporative and convective heat losses from the storage system. The annual collection and storage system began operation in late February 1977. Data are presented which illustrates the transient heat transfer which occurs during the start-up phase of operation. Thermal performance results are presented illustrating the efficiency of the solar collector and the variation of solar energy input to storage during a typical day's operation in May. Data are also presented which show the transient build-up of energy storage in the earth which surrounds the storage pool. An analog model has been developed to analyze the transient energy phenomena which occur within the earth surrounding the pool. These include transient heat losses from the pool to the earth and energy storage within the earth. Results of the analog model for idealized conditions are confirmed by exact …

Progress is summarized in a project directed toward development of numerical methods suitable for the computer solution of problems in reactor dynamics and safety. Specific areas of research include methods of integration of the time-dependent diffusion equations by finite difference and finite element methods; representation of reactor properties by various homogenization procedures; application of synthesis methods; and development of response matrix techniques.

The Wind Characteristics Program Element (WCPE) is a service element to provide meteorological information to other parts of the Wind Energy Conversion Program. In this role, the WCPE has as its general objective acceleration of the development, commercialization and utilization of reliable and economically viable wind energy conversion systems (WECS). This report discusses the work undertaken in the areas of design and performance evaluation, site selection, and presiting evaluation from April 1976 through June 1977. A systematic evaluation of wind descriptors has begun in the Design and Performance Evaluation Program Areas and is leading to the preparation of handbooks of meteorological information for use in design and performance evaluation. A conceptual framework has been established within the Site Selection Program Area that clearly defines the relationships between siting tools. The Presiting Evaluation Program Area is involved in the identification of large areas of high wind energy potential throughout the United States, and in the determination of wind characteristics related to the economic viability of wind energy conversion within these areas.

The anomalous slowing of an ion beam injected perpendicularly to the confining magnetic field of a low ..beta.. plasma is experimentally verified in the nonlinear stages of the excited lower-hybrid instability. Furthermore, a transition of the main nonlinear mechanism from the quasilinear to the particle trapping regime is demonstrated by varying beam parameters.

Tabulated data are presented on the deposition of fallout /sup 89/Sr and /sup 90/Sr at various world land sites through 1976; the ..gamma.. spectra and content of /sup 7/Be, /sup 95/Zr, /sup 137/Cs, /sup 144/Ce, /sup 90/Sr, /sup 210/Pb, /sup 238/Pu, /sup 239/Pu, and stable Pb in samples of surface air collected during 1966 at various world sites; and the content of fallout /sup 137/Cs and /sup 90/Sr in samples of drinking water and milk collected in New York City through 1976. (CH)

A modified Covell method for direct peak analysis has been applied to energy dispersive x-ray fluorescence spectra. The method is background independent and is well-suited to computerized data reduction. It provides acceptable precision, minimizes errors from instrumental gain shift, and permits peak overlap correction. Peak overlap errors exhibit both positive and negative nodes as a function of peak separation distance, and are corrected using concentration ratios determined from thin, single-element standards. Peak precisions and overlaps are evaluated as a function of window width to aid in width selection. Least-square polynomial smoothing prior to peak analysis significantly improves peak area precisions without significantly affecting their accuracies.

Evaluation of the application of heavy ion accelerators to ignite d-t pellets in a thermonuclear reactor is discussed. Accelerator design requirements considered include transport-limited current, beam injection conditions, and pulse bunching and focusing characteristics. The desirability of resonant and non-resonant accelerating structures is comparatively examined. The required power system switch tubes are discussed. It is concluded that heavy ion accelerators could offer a promising solution to the pellet-igniter problem. The advantages pointed out for this approach include electric efficiency greater than 10 percent, the possibility of high repetition rates (1 to 10 Hz), and a mature technological base. (RME)

The objective of using the probability table method (PTM) was to use a continuous-energy Monte Carlo code in which the cross sections are given as multigroup constants and yet to account for self-shielding within each group. In order to achieve this objective, the PTM was extended to deterministic methods. The ALICE Monte Carle Neutron Transport Code uses the PTM for all 175 energy groups which span the energy range from thermal to 20 MeV. The TART, ALICE, and MCN codes were used to determine the critical radius of a sphere of UH/sub 3/, where the U/sup 235/ enrichment varied from 20 to 100%. The PTM was used to calculate the transmission through a 30 cm iron plate. The source was normal to the slab and distributed as 1.0/E from 20.0 MeV to 1 keV. For the problems investigated the ALICE code can calculate both shielding and criticality problems as accurately as the pointwise code MCN. 1 figure, 1 table. (RWR)

An appraisal investigation of the geothermal resources of a portion of the Lower Colorado River Region of the U.S. Bureau of Reclamation is reported. The study area includes most of Arizona, part of western New Mexico west of the continental divide, and a small part of southwestern Utah. Almost 300 water samples have been collected from the study area and chemically analyzed. These samples include hot wells and springs in addition to nearby nonthermal waters to help establish background chemistry. Further, almost 10,000 chemical analyses of groundwaters were obtained from the U.S. Geological Survey's water quality file. Routine geothermal interpretative techniques were then applied to these chemical data to identify geothermal anomalies which might indicate the presence of exploitable geothermal resources. These geochemical anomalies were then evaluated in terms of available geophysical data such as heat flow, gravity, magnetics, basement linears, earthquake epicentral locations, depth of sedimentary basins, quaternary volcanics, recent fault scarps, etc. to further delineate the size and shape of the prospective geothermal sites and help establish their production potential.

Quarterly report of the Areawide Waste Treatment Management Plan in/near San Antonio, Texas describing the program's activities, contract status, finances, relationships with other agencies, and additional information for the second quarter of 1976.

Abstract: Nine artificial-recharge pits were excavated in the alluvium in upper Black Squirrel Creek basin, Jimmy Campy Valley, and in the alluvium overlying the Widefield aquifer in Fountain Valley. Each artificial-recharge site was instrumented to measure inflow, stage fluctuations, and water-table fluctuations. Artificial-recharge tests conducted in upper Black Squirrel Creek basin indicated that the average adjusted rates of infiltration for the three sites ranged from 1.6 to 2.4 feet (0.5 to 0.7 meter) per day. Tests conducted in Jimmy Camp Valley indicated that the average adjusted rates of infiltration for the two sites ranged from 3.8 to 24.7 feet (1.2 to 7.5 meters) per day. Tests conducted on the Widefield aquifer indicated that the average adjusted rates of infiltration for four sites ranged from 2.3 to 12.9 feet (0.7 to 3.9 meters) per day.

This report contains information regarding the assassination of President John F. Kennedy in 1963, including knowledge about what happened before and after the event.