Several general approaches to remote servicing are briefly described for the LLL Field Reversed Mirror and Tandem Mirror Fusion reactors. Remote servicing system design considerations for the blanket module are briefly discussed. (RME)

The principal conclusions that can be made based on the estimated costs reported in this paper are twofold. First, hybrid reactors operating symbiotically with conventional fission reactors are a potentially attractive supply alternative. Estimated hybrid energy system costs are slightly greater than estimated costs of the most attractive alternatives. However, given the technological, economic, and institutional uncertainties associated with future energy supply, differences of such magnitude are of little significance. Second, to be economically viable, hybrid reactors must be both fuel producers and electricity producers. A data point representing each hybrid reactor driver-blanket concept is plotted as a function of net electrical production efficiency and annual fuel production. The plots illustrate that the most economically viable reactor concepts are those that produce both fuel and electricity.

None

Major cations, anions, trace elements and dissolved organic C were measured in percolate from retorted oil shale collected from irrigated lysimeters in the field at Anvil Points, Colorado, over a two year period. The investigations indicated that chemical equilibrium was not established over the monitoring period and major changes occurred in percolate composition as a function of applied water volume and water residence time in the shale. Field and laboratory studies indicated that several factors contributed to changes in the chemistry of the shale on weathering, including recarbonization of the surface horizons with atmospheric CO/sub 2/ and the activities of microorganisms in surface and subsurface horizons. However, the principal mechanism responsible for the decreases in pH and salt concentrations appeared to be the conversion of major quantities of sulfide in the retorted shale to sulfate through a thiosulfate intermediate.

A number of candidate turbine materials are being evaluated for their resistance to erosion, corrosion, and stress corrosion cracking (SCC) in geothermal brines. These materials include Fe-, Ni-, Co and Ti-base alloys, coatings and ceramics. Tapered wearblades, simulating the leading edge of a turbine blade, are exposed to the direct impact of a two-phase nozzle exhaust. Bent beam SCC specimens, which are constrained in fixtures attached to the wearblade holders, are also exposed to this exhaust. Results of a test series are reported in which acidified liquid brine was expanded to atmospheric pressure are reported. The tests were performed at the LLL Field Test Station near Niland in the Salton Sea Geothermal Field. Evaluation of the exposed materials indicates that Ti-base alloys show the most promise for turbine wheel components in the high salinity geothermal environments.

The Hanford Engineering Development Laboratory (HEDL) operated by the Westinghouse Hanford Company for the United States Department of Energy is currently developing, fabricating, and evaluating automated fuel fabrication equipment. This program has as its major goals: reduced personnel exposure, improved safeguards/accountability and improved fuel performance. One of the automated equipment items which has been fabricated is a fuel pellet inspection system. This system inspects fuel pellets for surface flaws and measures pellets for length, diameter, and weight at a rate of one pellet per second. The inspected pellets are sorted automatically and the results of the inspection are transmitted to a central computer for trend analysis and verification of accountability data.

Local air velocity measurements were obtained with a laser Doppler anemometer near flow blockages in an unheated 7 x 7 rod bundle. Sleeve blockages were positioned on the center nine rods to create an area reduction of 90% in the center four subchannels of the bundle. Experimental results indicated that severe flow disturbances occurred downstream from the blockage cluster but showed only minor flow disturbances upstream from the blockage. Flow reversals were detected downstream from the blockage and persisted for approximately five subchannel hydraulic diameters. The air velocity profiles were in excellent agreement with water velocity data previously obtained at essentially the same Reynolds number. Subchannel average velocity predictions obtained with the COBRA computer program were in good agreement with subchannel average velocities estimated using the measured local velocity data.

Relationships necessary for ring stability are derived between the self-focusing forces of an electron ring and the magnetic field gradient defocusing forces present near and just subsequent to the start of ring acceleration.

The authors have examined 1200 interactions with visible energies greater than 7.5 GeV produced by an anti-neutrino beam in the Fermilab 15-foot bubble chamber filled with a light neon hydrogen mixture. They have found one event with a {mu}{sup +}e{sup -} and hadrons in the final state, but with no evidence of strange particle production. This event may be an example of dilepton production by an anti-neutrino interaction, but other interpretations are possible. With 90% confidence, they conclude that the rate for the process {bar {nu}} + N {yields} e{sup -} + {mu}{sup +} + hadrons is {le} .8% of charged current anti-neutrino interactions with visible energy > 7.5 GeV.

A calculation is given of the radiated energy loss from a charged rod which moves at constant speed past an infinite set of parallel semi-infinite conducting plates of infinitesimal thickness, with the rod taken parallel to and at a fixed distance from the plate edges. The problem is analyzed using the Wiener-Hopf technique, and the resulting formulas are evaluated analytically in the limits of high rod speed and low rod speed, and compared with numerical evaluation over the full range of speeds.

The results of the analysis of {approx} 1000 {nu} events of the type {nu} + N {yields} {mu}{sup -} + hadrons from the NAL dichromatic beam are presented. Distributions in terms of the scaling variables x = Q{sup 2}/2o{nu} and y = {sup E}n/E{sub {nu}} are presented. The x distribution is compared with F{sub 2}{sup ed} (x) from SLAC; the Q{sup 2} distribution is tested for the presence of the propagator term F{sub 2}(x) {yields} F{sub 2}(x)/(1 + Q{sup 2}/2){sup 2}; and the y distributions are fit to the form d{sigma}{sup {nu}N}/dy = 1 + a(1-y){sup 2}. A smaller amount of {bar {nu}} data will also be presented.

A crossed molecular beam study was made of the reactions of U with inorganic oxidizers (O/sub 2/, NO, SO/sub 2/, N/sub 2/O, CO/sub 2/), water, alcohols, acetone, and halogenated methanes. Results show that U in the gas phase behaves very much like most other heavy metals, and may be called a heavy Ba or Sn atom. 8 figures. (DLC)

The principles, advantages, and implementations of scanning reference electrode techniques are reviewed. Data related to pitting, intergranular corrosion, welds and stress corrosion cracking are presented. The technique locates the position of localized corrosion and can be used to monitor the development of corrosion and changes in the corrosion rate under a wide range of conditions.

The CORA code is a steady state/transient, core thermal hydraulics code for the FFTF Reactor. A brief overview of the code development and use is presented.

Techniques of mathematical modeling and modern control theory, using microprocessors and advanced measurement and control devices, are extensively applied to components and systems for the conversion and delivery of energy. The projection of energy demands, as a function of economic growth and energy price, is also the subject of active research and analysis. This position paper reviews the current state-of-the-art of analysis in these areas dealing with the planning and operation of energy systems that deliver fuels and electric power. Future research directions are also discussed. 25 references.

A method is described whereby the absolute radiative quantum efficiency of paramagnetic ions in liquids or solids can be determined from photoacoustic measurements. 1 figure.

Separate abstracts were prepared for five of the contributions to this symposium. The four remaining ones have already been cited in ERA and may be located by reference as the entry CONF-780134-- in the Report Number Index. (RWR)

An experiment using very thin sources in low density polyurethane foam to expand the annihilation point spread distributions by linear factors of 20 and 50 was designed. By placing the same sources in an aluminum cylinder, range effects are effectively suppressed and broadening from all other sources may be measured. Three positron sources were used: C-11, Ga-68 and Sr-82, having beta end-points of 0.96, 1.90, and 3.35 MeV respectively. The sources were evaporated from solutions of small volume and high specific activity and sealed between two 50 ..mu..m sheets of plastic 10 mm in diam. The sources were placed at the center of 50 cm diam cylinders of polyurethane foam of density 0.020 gm/cm/sup 3/ and 0.05 gm/cm/sup 3/ (including the density of trapped air). A typical foam cell had a volume of 1 mm/sup 3/ and 8 ..mu..m walls. Thus the absorber was homogeneous on the scale of the positron range and the observed distributions were 50-fold or 20-fold enlargements of those that occur in water or tissue. The projected distribution of annihilation points was measured using the Donner 280-Crystal Circular Positron Coincidence Tomograph. This instrument measures the integral of positron annihilations between each of 14,700 detector pairs. These …

Separate abstracts were prepared for the five lectures presented. (JFP)

A physical vapor deposition process with a rf induction vapor source has been developed to deposit 11.2-..mu..m Al--Cu alloy on polyimide laminate substrates. The average thickness uniformity (standard deviation/average thickness) of the deposit acquired by a beta backscatter technique was approximately 1% for these deposits. The Al-0.3 wt % Cu vapor charge results in a Cu content in the deposit of 0.12 wt %. The Cu shows no preferential deposition pattern, as related to the surface of the laminate and its dispersion throughout the deposit. The resistivity of the Al--Cu deposits is 3.0 ..mu cap omega..-cm and is stable from one deposition run to another. Also, the resistivity was not related to the geometry of the domed substrate. The density of the 11.2-..mu..m-thick Al--Cu film was within 1% of theoretical, and its adhesion to the polyimide exceeds that required for post-deposition operations and handling. The deposited films exhibited a specular reflectance above 90% with a 632.8 nm wave length source and a grain size of 0.6 ..mu..m throughout the deposit.

A survey is made of commercially available methods currently in use as well as those which might be used to prevent scaling and corrosion in geothermal brines. More emphasis is placed on scaling. Treatments are classified as inhibitors, alterants and coagulants; they are applied to control scaling and corrosion in fresh and waste geothermal brines. Recommendations for research in brine treatment are described.

Materials accounting for special nuclear material in future fuel cycle facilities will draw heavily on sophisticated data-analysis techniques. Decision analysis, which combines elements of estimation theory, decision theory, and systems analysis, can be used to reduce errors caused by subjective data evaluation and to condense large collections of data to a smaller set of more descriptive statistics. The methods and requirements of decision analysis are discussed and illustrated by a conceptual design example of an advanced materials accounting system for a plutonium nitrate-to-oxide conversion facility.

The status of decays of the kind V ..-->.. P..gamma.. and P ..-->.. V..gamma..viewed with special emphasis on the work done by the authors in this field. The low experimental value of GAMMA(rho ..-->.. ..pi gamma..) remains the outstanding problem. The lastest preliminary numbers from a Fermi Laboratory experiment go in the right direction but not far enough. 15 references.

The kinetics of the isothermal martensitic transformation in Fe--29.6 Ni and Fe--22.5 Ni--4 Mn alloys were investigated as a function of constant magnetic fields, ranging up to 140 KOe (11 x 10/sup 6/ ampere/m). The principal role of the applied magnetic field is to increase the free-energy difference between the product and parent phases in these iron-based alloys, and so the transformational driving force for a given composition can be varied even at a fixed temperature. In the Fe--Ni alloy, the isothermal transformation rate is increased by raising the magnetic field as well as by lowering the temperature, leading in either case to the entre of burst characteristics. The Fe--Ni--Mn alloy does not transform perceptibly without an applied field, but exhibits isothermal C-curve kinetics in fields above 60 KOe (4.8 x 10/sup 6/ ampere/m). The average volume per martensitic plate ad the average plate orientation are found to be insensitive to the strength and direction of the magnetic field, undoubtedly indicating the dominance of autocatalytic nucleation during the course of the isothermal transformation. However, there is some tendency for the morphology to become less lath-like and more plate-like with increasing field strength at a given transformation temperature, and likewise with …