A user's manual for the REBUS System (REactor BUrnup System) is presented. Its primary purpose is to provide sufficient information about the REBUS capability to the user to ensure its efficient utilization. The current REBUS System either solves for the infinite time (equilibrium) operating conditions of a recycle system under fixed conditions, or solves for operating conditions during a single time step (non-equilibrium). The capability of studying various in-reactor fuel management and ex-reactor fuel management schemes has been included. REBUS has been operated with one- and two-dimensional diffusion theory neutronics solutions up to the present time. The model was specifically designed for extension to other neutronics models such as three-dimensional diffusion or transport theory and direct or synthesis solutions.

Following stimulation by three nuclear explosives, the field rate of production of ''Reservoir A'', U.S.S.R., increased very significantly. The potential profitability of projects such as Reservoir A and some of the possible causes for the increased rate of production are reviewed.

Estimates are made of United States resources of coal, petroleum liquids, natural gas, uranium, geothermal energy, and oil from oil shale. Accuracy of the estimates probably ranges from 20 to 50 percent for identified-recoverable resources to about an order of magnitude for undiscovered-submarginal resources. The total cost resource base in the United States is estimated to be about 3,200 billion tons, of which 200 to 390 billion tons can be considered in the category identified and recoverable. It is estimated that the total resource base for petroleum liquids is about 2,900 billion barrels, of which 52 billion barrels is identified and recoverable. Of the total resource base, some 600 billion barrels is in Alaska or offshore from Alaska, 1,500 billion barrels is offshore from the United States, and 1,300 billion barrels is onshore in the conterminous United States. Identified-recoverable resources of petroleum liquids corresponding to these geographic units are 11, 6, and 36 billion barrels, respectively. The total natural gas resource of the United States is estimated to be about 6,600 trillion cubic feet, of which 290 trillion cubic feet is identified and recoverable. Uranium resources in conventional deposits, where uranium is the major product, are estimated at 1,600,000 tons …

The HELP documents provide SPEAKEASY users with concise definitions of most of the words available in the current processors. In this report, the documents are given in a variety of formats to enable one to find specific information quickly. The bulk of this report consists of computer read-out of the HELP library via SPEAKEASY.

Discussions are given for each of the following topics: (1) importance to the Nation of geothermal resources, (2) budget recommendations, (3) overview of geothermal resources, (4) resource exploration, (5) resource assessment, (6) resource development and production, (7) utilization technology and economics, (8) environmental effects, (9) institutional considerations, and (10) summary of research needs.

SPEAKEASY has continued to evolve and grow in power. The current production versions, referred to as SPEAKEASY-3, contain many features that have not been formally documented. The needed documentation for the most important of these features is provided in this report. Individual new words that are now available are explained and illustrated in accompanying sample runs. Because of the growing use of the language in interactive situations, emphasis is placed on explaining facilities oriented to such usage. The power of a library-directed programing language is discussed, and the concept of the SPEAKEASY system is introduced. This report is a supplement to previously available documentation.

A variety of position-sensitive single-wire proportional counters with lengths up to 90 cm have been built and tested in the focal plane of the Enge split-pole spectrographs at the Argonne tandem accelerator and cyclotron. This report, which describes the counters, the associated electronics, and the data-handling procedures, is intended as an operating manual for general use of the system. Under ideal experimental conditions, the spatial resolution of the counters is about 1 to 1.5 mm (FWHM), dependent on the energy loss of the incident particle in the counter. The spatial response of the counters is linear to within 0.5% of the active length. Furthermore, the system contains a conventional proportional counter, behind the position counter, designed to provide particle identification based on the energy lost in the counter. Pulses from the two counters are normally analyzed in coincidence to provide excellent particle discrimination. Examples of typical experimental results are also presented.

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A system is described for use in homogenizing poly- and single-crystal metal samples at temperatures up to about 1300/sup 0/C. The furnace tube may be evacuated to a dynamic vacuum of 10/sup -3/ to 10/sup -4/ torr. A provision exists for pushing the sample from the hot zone into a zone the walls of which are at room temperature.

The Met-L-X storage unit and fixed-pipe system performed adequately, but the distribution provided by the nozzles as located is not satisfactory. Relocation of the nozzles does not appear to offer much promise for improvement because the number of nozzles required would necessitate a piping array nearly impossible to design or install around existing equipment. It would leave little room for equipment to be protected in a new installation. The tests reported did not address the question of whether Met-L-X powder will extinguish a sodium fire even if properly applied.

In this report an estimate of the pion dose from a stopping {pi}{sup -} beam is made. Dose rates of 15 krad {center_dot} gram/min are obtained. These are adequate for clinical use.

In most numerical codes which simulate shock wave propagation through rocks the stresses which drive the grid are separated into a mean stress and deviatory components. The mean stress (P = -/sup 1///sub 3/ t/sub ii/) is measured as a function of volume on small samples in the laboratory which is normally called the hydrostat. Repeating these measurements on many samples, unloading each sample from a different mean stress, will produce a single loading pressure-volume curve and a series of unloading curves. The difference between the volume of each unloading path at zero mean stress and the original volume of the sample represents the amount of void space that has been irreversibly squeezed out. Ideally the input for the numerical programs should include all of the P-V data measured, however, this is not practical. The present method used in SOC and TENSOR is to input the loading hydrostat and a single unloading path from the maximum mean stress obtained experimentally (usually approximately 40 kbars). Intermediate unloading paths are then interpolated using a weighted average between the slopes of the loading and unloading curves. The model presented is designed to correct deficiencies in the present method.

The objective of this test series was to demonstrate the feasibility of using liquid nitrogen as a fire-extinguishing agent for certain types of metal fires. It was intended to provide data and experience appropriate to the design of a second series which will test the applicability of this technique to plutonium fires and which will develop more detailed operating information and permit more precise measurement of test parameters-oxygen depletion rates and equilibrium concentrations, temperature effects, and nitrogen pressures, flow rates, spray methods and patterns, etc. The test series was directed specifically toward extinguishment of metal fires occurring in well-confined areas and was not intended to be representative of any larger classification. Fires of several types were tested, e.g., magnesium, mixed magnesium and zirconium, sodium and cerium. (TFD)

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This report presents the trajectory computer program, SPINFIN. The program has been in use at Sandia Laboratories, Livermore, for flight simulation of those reentry vehicles which utilize a class of semi-passive fin roll-control systems. As such, it has served as an important design tool for some time. The report includes a presentation of the prominent features of the mathematical model which describes the vehicle aero-, flight-, and control-system dynamics. Additionally, detailed descriptions of the program input and output are provided as a user`s guide.

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The {sup 55}Fe from nuclear weapons testing which enters the ocean is in a chemical form which is much more readily available for biological uptake than is stable oceanic iron. This property of {sup 55}Fe results in up to 1000-fold higher {sup 55}Fe specific activities in marine organisms than is present in seawater. Dilution of {sup 55}Fe by stable iron from anthropogenic sources or natural sources appears to be responsible for the lower specific activity in mid-latitude marine organisms than in organisms from high latitudes. The half-time for {sup 55}Fe in harvested salmon from the west coast is essentially the same as the half-residence time for stratospheric radioactive debris. This fact suggests that {sup 55}Fe reaching the ocean surface is available for biological uptake for a relatively short time. Measurements of {sup 55}Fe specific activities in certain crustacea predacious fish than in the phytoplankton. What we have learned about the behavior of the radionuclide {sup 55}Fe in the ocean environment may well apply to other fallout radionuclides, and a consideration of this fact should be included in estimating the potential hazard of the release of radionuclides to the marine environment. These data suggest that the release of radioiron from a …

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A venturi type bubble generator was developed for application in the xenon removal system proposed for a molten-salt breeder reactor. Gas injected into the high velocity liquid at the venturi throat is fromed into bubbles by the fluid turbulence in the diffuser cone. Tests were conducted using aqueous solutions to determine the various pressure drops of the bubble generator as a function of liquid and gas flow rates and to determine the bubble diameter produced. Empirical relationships were developed which could be used in combination with the more conventional fluid flow equations to predict the overall head loss and the gas injection pressure of the bubble generator. A dimensionless correlation for predicting the bubble diameter was developed for bubble generators of similar geometry.

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Untrimmed hybrid microcircuit networks require dimensional dontrol to maintain critical electrical parameters within the required tolert.- ances. Dimensional integrity can be maintained by parameter manipulation and control. Five processing parameters affect the dimensional stability of the pattern: the prebake time-temperature product, exposure energy, developing time and concentration, resist thickness uniformity, and etchant undercutting. By adjusting the relative dominance of those parameters and by. optimizing the value of each, the total dimensional deviation can be made relatively insensitive to normal process variations. Thus, process characterization and control methods which will maintain one-percent dimensional control on lines as narrow as 5.0 mils - (127 Km) can be established.