An extensive literature search was made to locate technical publications and computer programs relating to wellbore temperatures during drilling operations. Publications obtained are listed in the References. Two approaches were used in calculating borehole temperatures: The steady state solution of Holmes and Swift was programmed and 2100 cases calculated for various borehole configurations. For transient temperature studies, Exxon Production Research Co. made calculations for ten borehole configurations under subcontract. These calculations emphasize the need for better high temperature bit performance and improved engineering procedures in drilling.

From objective and plan: The airborne data gathered were reduced using ground-based computer facilities to give the basic uranium, thorium and potassium equivalent gamma radiation intensities, ratios of these intensities, aircraft altitude above the earth's surface, total gamma ray and earth's magnetic field intensity, correlated as a function of geologic units indicated from available geologic maps. Results of analyses of these field data are presented as profile plots of the gamma radiation and earth's magnetic field.

From objective and plan: The airborne data gathered were reduced using ground-based computer facilities to give the basic uranium, thorium and potassium equivalent gamma radiation intensities, ratios of these intensities, aircraft altitude above the earth's surface, total gamma ray and earth's magnetic field intensity, correlated as a function of geologic units indicated from available geologic maps. Results of analyses of these field data are presented as profile plots of the gamma radiation and earth's magnetic field.

From objective and plan: The airborne data gathered were reduced using ground-based computer facilities to give the basic uranium, thorium and potassium equivalent gamma radiation intensities, ratios of these intensities, aircraft altitude above the earth's surface, total gamma ray and earth's magnetic field intensity, correlated as a function of geologic units indicated from available geologic maps. Results of analyses of these field data are presented as profile plots of the gamma radiation and earth's magnetic field.

From objective and plan: The airborne data gathered were reduced using ground-based computer facilities to give the basic uranium, thorium and potassium equivalent gamma radiation intensities, ratios of these intensities, aircraft altitude above the earth's surface, total gamma ray and earth's magnetic field intensity, correlated as a function of geologic units indicated from available geologic maps. Results of analyses of these field data are presented as profile plots of the gamma radiation and earth's magnetic field.

The specification defines the Brayton Isotope Power System (BIPS) standards and characteristics for electrical power generation required to be maintained at utilizing equipments power-input terminals during generation and distribution.

It is well established that damage introduced at the surface of beryllium during machining operations can lower its mechanical properties. Tensile tests were conducted to illustrate this on beryllium presently being used for parts in the W79 program and similar to the new powder-processed beryllium specified for production (tentative specification MEL 76-001319). The objective of this study is to quantitatively illuminate the importance of controlling machining damage in this particular grade of powder-processed beryllium.

This report deals with gold-5 percent copper, which exhibited serious instability even in its higher strength states. The uniaxial specimens in this investigation make such instabilities appear even worse. The major effect of higher strain rates and lower forming temperatures was to extend the homogeneous deformation range, which generally allowed higher attainable strengths. Biaxial testing could suppress the low-strength instabilities but probably not the higher-strength instabilities. However, it was possible to produce a 110-ksi, 7 percent-elongation material by cryoforming at a relatively low deformation (23 to 32 percent). The literature indicates a minimum 50 percent deformation for this material is usual, which would produce a 150- to 200-ksi strength. If the instabilities can be suppressed, then room temperature (RT) working might be as effective as cryoforming. Cryogenic (or RT) spinning/forming could then produce an exceptionally strong structural material. For more material on cryoforming, see UCID-17265.)

The commercial development potential of 13 underdeveloped geothermal prospects in the Western United States has been examined and the prospects have been ranked in order of relative potential for development on the basis of investment considerations. The following were considered in the ranking: geotechnical and engineering data, energy market accessibility, administrative constraints, and environmental and socio-economic factors. The primary ranking criterion is the unit cost of energy production expected from each prospect. This criterion is obtained principally from expected reservoir temperatures and depths. Secondary criteria are administrative constraints, environmental factors and the quality of the geotechnical data. The Roosevelt, Utah, prospect ranks first in development potential followed in order by Beowawe, Nevada; Coso Hot Springs, California; Long Valley, California; and Brady's Hot Springs, Nevada.

The engineering design of the shock and vibration fixtures has been completed. Detail drawings of the individual components are now in progress, and fabrication of the fixtures is expected to begin in April 1976.

Mass spectrographic methods have served well in the past to analyze gaseous mixtures of the hydrogen isotopes. Alternate methods of analyses are reviewed which offer wider ranges and variety of isotopic determinations. This report describes possible improvements of the mass spectrographic determinations, gas chromatography, anti-Stokes Raman spectroscopy, microwave-induced optical emission spectroscopy, and methods of measuring tritium using radiation detection devices. Precision, accuracy, limitations, and costs are included for some of the methods mentioned. Costs range from $70,000 for the anti-Stokes Raman spectroscopy equipment, which can determine hydrogen isotopes but not helium, to less than $10,000 for the gas chromatographic equipment, which can determine hydrogen isotopes and helium with precision and accuracy comparable to those of the mass spectrometer.

The regional climate around the Nevada Test Site (NTS) is described. Emphasis is placed on the wind direction and speed and the atmospheric stability in Area 410. Included are estimates of the fastest winds expected in tornadoes and severe thunderstorms. Three accident scenarios in Area 410 are covered: dispersal of 1 kg of /sup 239/Pu from explosion of 68 kg (150 pounds) of high explosives; release of gross fission products from a 10/sup 19/ fission accident resulting from inadvertent formation of a critical mass; and accidental detonation of a 100-ton fission primary. An Instantaneous Point Source (IPS) code was developed and is explained. The IPS code estimates concentrations in the surface air of radioactive particles that have negligible settling rates (have a radius less than 5 ..mu..m). For each accident, this code calculated and plotted contour maps that show the estimated exposures of the area to radioactive particles from the explosion.

The objective of this program, Part 2 of the Silicon Materials Task, is to develop and define purity requirements for solar cell grade (SG) silicon material by evaluating the effects of specific impurities and impurity levels on the performance of silicon solar cells. The basic approach of the program is to establish, as unambiguously as possible, what concentrations of the impurities commonly found in silicon starting material (metallurgical grade silicon) can be tolerated in silicon crystals produced by both the standard Czochralski and the dendritic-web sheet (rapid growth) methods without degrading solar cell performance. The program is on schedule in all elements. Specifically the growth, evaluation, solar cell fabrication and testing are completed for the baseline boron-doped Czochralski material. Cell efficiencies are in the 11 to 13 percent range (AM1). The growth of six first generation Czochralski crystals (boron doping plus Cr, Mn, Cu, Ni, V, and Ti) is completed. Solar cell measurements on four of the first doubly-doped ingots indicate that Cr and Mn seriously degrade cell performance at the 10/sup 15/ cm/sup -3/ doping level while neither Ni nor Cu produce any significant reduction in cell efficiency. The results for Ni can be rationalized on the basis of …

An equation of state of water is constructed in the density range between 2 g/m/sup 3/ and 4 x 10/sup 2/ Mg/m/sup 3/ and in the temperature range between 0.025 eV (room temperature) and 25 keV by combining several theoretical codes and experimental data. The liquid-vapor phase change, ionization process, and chemical equilibrium among dissociation products of water are all considered. Theoretical results and experimental data are compared and several interesting aspects of the thermodynamics of water are discussed.

References for the commonly cited technical papers in the area of computer protection are given. Great care is taken to exclude papers with no technical content or merit. For the purposes of this bibliography, computer protection is broadly defined to encompass all facets of the protection problem. The papers cover, but are not limited to, the topics of protection features in operating systems (e.g., MULTICS and HYDRA), hardware implementations of protection facilities (e.g., Honeywell 6180, System 250, BCC 5000, B6500), data base protection controls, confinement and protection models. Since computer protection is related to many other areas in computer science and electrical engineering, a bibliography of related areas is included after the protection bibliography. These sections also include articles of general interest in the named areas which are not necessarily related to protection.

Data on the properties of epoxy resin systems studied at Lawrence Livermore Laboratory have been collected and are presented in tabular form. Information is included on the chemical nature of the resins and curing agents, as well as data sheets for each system. Included in the data sheets are the composition of the system (resin, diluent, and curing agent); the cure schedule; tensile, compressive, and shear data; viscosity, gel time, and exotherm; density, shrinkage, and water absorption; the transition temperature; and thermal properties.

Premature failures during proof testing of pressurized-gas-metal-arc (PGMA) welded beryllium assemblies were investigated. The failures were almost entirely within the beryllium (a forming grade, similar to HP-10 or S-240), close to and parallel to the weld interface. The aluminum-silicon weld filler metal deposit was not centered in the weld groove in the failed assemblies, and failure occurred on the side of the weld opposite the bias in the weld deposit. Tensile tests of welded samples demonstrated that the failures were unrelated to residual machining damage from cutting the weld groove, and indicated small lack-of-fusion areas near the weld start to be the most likely origin of the failures. Acoustic emission was monitored during tensile tests of the welds. The majority of acoustic emission was probably from crack propagation through the weld filler metal. Tensile bars cut from the region of the weld start behaved differently; they failed at lower loads and exhibited an acoustic emission behavior believed to be from cracking in the weld metal-beryllium interface. Improvement in the quality of these and similar beryllium welds can therefore most likely be made by centering the weld deposit and reducing the size of the weld start defect. 21 fig.

None

Results are presented of a development program aimed at making a full-scale, all-beryllium frustrum by riveted assembly methods. Included are descriptions of the sheet-metal fabrication practices and assembly plans. Results of extensive mechanical testing of both ingot- and powder-source beryllium products that are presented include tensile, notch-tensile, bearing, and shear tests. Although the full-size structure has not been built, examples are given of several conical and cylindrical structures that were made. The largest of these is a 20-in. diameter, 15-in. long cylinder that was roll-formed from one 0.050-in. thick ingot sheet and assembled with 60 countersunk rivets. Tensile testing of riveted flat coupons is also reported as is bulge testing of riveted cylindrical shells. A cost comparison of riveted deep-drawn and powder-source cylinders is made. Results show that when strength and dimensional tolerance requirements are not severe, a riveted assembly approach is warranted. 33 figures, 8 tables. (auth)

An investigation was conducted to demonstrate application of freeze blocking in waste transfer lines such that a hydrostatic pressure test can be applied. A shop test was conducted on a 20-foot length, 3-inch schedule 40, carbon steel pipe using a coolant of dry ice and Freon. The positive results from these tests prompted a similar employment of the freeze block method in hydrostatic pressure testing the feed inlet leading to 241-S-101 Waste Tank. This pipeline is a 3-inch schedule 10, stainless steel pipe approximately 800 feet long. The freeze block was formed near the lower end of the pipe as it entered the 101-S Waste Tank and a pressure hold test was applied to this pipeline. This test proved the integrity of the pipeline in question, and demonstrated the validity of freeze blocking an open-ended pipeline which could not be hydrotested in other conventional ways. The field demonstration facility, costing $30,200 was completed late in 1975.

A laboratory version of a process to clean contaminated deuterated polyethylene (CD/sub 2/) was modified slightly and scaled up to produce 2 lb of clean, reusable CD/sub 2/ polymer. A complete cycle of the process is: (1) Melt the CD/sub 2/ polymer at 30 vol percent in xylene at 105 to 110/sup 0/C. (2) Pressure filter the hot solution at 103 to 138 kPa (15 to 20 psi). (3) Cool the solution to precipitate the polymer and separate it from the liquor. (4) Vacuum dry the precipitate at about 266 Pa and 37/sup 0/C.

The objective of this research program is to demonstrate the feasibility for the high volume low cost production of silane (SiH/sub 4/), as an intermediate for solar or semi-conductor grade silicon. The goal of the program is to demonstrate the feasibility for achieving a net production cost of less than $5.00 per kilogram of silane through the operation of a 10 pound/day scale pilot plant. The process to be investigated is based on the catalytic disproportionation of chlorosilanes using a tertiary amine ion exchange resin followed by fractional distillation to purify the silane product. (WDM)

A small, manportable neutron detector using 18 /sup 3/He proportional counters arranged in 3 banks within a polyethylene moderator is described. Each counter is 25 mm in diameter and 340 mm long (sensitive length) and is filled with highly purified /sup 3/He to a pressure of 400 kPa (4 atm). Measurements of the detector efficiency were made using a calibrated /sup 252/Cf neutron source. Then, independent calculations of the detector efficiency were performed with the TART Monte Carlo transport code. Calculations and measurements for several source/detector arrangements and moderator configurations are compared to evaluate the accuracy of the TART code in predicting the efficiency of small /sup 3/HE neutron detectors.

Background analyses of three control systems capable of controlling the speed, output voltage, and start rate of Brayton Isotope Power Systems (BIPS) are presented. Conclusions of all functions considered are summarized. (TFD)