Work in aerospace safety analysis, research, development, and testing is discussed. Studies for the SNAP program are outlined. The engineering andd test program for aerospace safety ls described. (M.C.G.)

The environmental monitoring data processed during 1962 indicated that Laboratory operations did not contribute appreciably to the contamination of the environment with radioactive materials. However, the effects of airborne radioactive materials generated from nuclear weapons tests conducted at various locations throughout the world continued to be reflected in certain parts of the environmental monitoring data. The concentration of radioactive materials in air (as determined by air filtration techniques) increased by a factor of about 2.5. The concentration of radioactive materials in rain water increased by a factor of 3 to 5. The Sr/sup 90/ concentration in raw milk increased by a factor of about 3. The I/sup 131/ concentration in raw milk increased by a factor of about 12. The general radiation background increased by a factor of 2 in the East Tennessee Area. Gamma measurements taken over river bottom sediment increased by a factor of about 2 in Fort Loudoun Reservoir, a body of water that is fed by the Tennessee River and not affected by liquid waste releases originating from Oak Ridge operations. The calculated average concentration of radioactive materials in the Clinch River resulting from waste releases originating from ORNL operations decreased from 18% of the (MPC)w …

ABS>The organization, training, equipment, and operation of a radiological assistance team are described. The team renders assistance in the event of incidents involving radiological safety or weapons incidents. (C.H.)

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A quantum correction of the statistical model of the atom was obtained by modifying March and Plaskett's region of integration in the (n/sub r/,l), or quantum-number, plane. Integrations over the plane lead, in the unmodified case, to the Thomas-Fermi density expression and energy equation. Integrations over the modified region are here shown to produce a modified Thomas-Fermi expression for the electron density, and a correction to the kinetic energy. The latter correction shows a similarity to the Weizsacker correction, but is smaller by a slowly changing factor of the order of 10. A modified Thomas-Fermi-Dirac equation was derived by the standard variational procedure. Numerical solutions of the equation were obtained, yielding atomic binding energies in much better agreement with experimental values than those of the unmodified theory. (auth)

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

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A rather broad investigation was carried on in the materials and methods which are considered possibly useful in forming ceramic to metal seals and composite structures for use in the environment of cesium-plasma thermionic converters. Initially, studies of five specific meands of joining refractory metals to alumina were undertaken, as well as studies of metallizing methods, of forming graded tungsten-alumina composites, and of the possible metals and ceramics which could be utilized best in structures operated at 2000 deg C. The five joining methods studied are: (1) Formation of a continuous electroplated layer of refractory metal across the adjacent surfaces of metal and ceramic. (2) Welding of a metal member to the ceramic by ultrasonic welding techniques; i.e., without heat. (3) Use of high temperature brazing alloys. (4) Formation of a bond between metal and ceramic by the diffusion of compatible intermediate materials into both structural members. (5) Welding of single oxide ceramics directly to refractory metals using electron-beam welding equipment. The study of metallizing methods was started because the first three of the joining methods listed require the use of a metallized surface of the alumina. It was determined that three of the five methods for joining refractory metals …

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The diffraction techniques used at ANL to obtain scattering amplitudes and cross sections for elements and isotopes are briefly described; and some results obtained for Zr, Tc/sup 89/, Os, Os/sup 188/, Os/sup 189/, Os/sup 190/, Os/sup 192/, K, K /sup 39/, Rb, Rb/sup 85/, Ir, and Mg are summarized. (D.C.W.)

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The present document is a transcript of presentations by the sponsors of the NERVA Nuclear Subsystem projects described in WANL Work Program. These talks were given at a meeting held at WANL on October 22 and 23, 1963 to review progress in Contract Year 1963. The agenda following gives the order in which the projects were discussed, which is also the order in which they were printed, Projects 2900, 4101, 4300, and 5000 were not discussed. A bibliography of external reports issued during the contract year follows the talks.

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League of Women Voters of Denton Newsletter discusses issues about voting and upcoming ballot legislation.

This report addresses the design and development of experimental system amplifiers system packages serial numbers 4, 5, and 7.

The United States and the European Atomic Energy Community (Euratom), on May 29, and June 18, 1958, signed an agreement which provides a basis for co-operation in programs for the advancement of the peaceful applications of atomic energy. The work described in this report represents the Joint U.S.-Euratom effort. The over-all development program is designed to obtain the test data and operating experience necessary to eventually realize a 50 percent increase in the output of the Garigliano Nuclear Power Station located at Sessa Aurunca (Campania, Italy). Two tasks are in progress: Task III-F involves the preparation of test specimens of reactor vessel material for irradiation; Task IV consists of the formulation of specification for a complete data logging and computer system.

The rapid technological development of the nuclear and space industries has placed a great demand on metal joining processes. One of the most promising processes is electron beam welding. Welding with the electron beam ofiers high integrity in addition to the ability to fabricate unusual configurations. Advanced nuclear fuels require both reliability and unusual designs for satisfactory operation under extreme conditions of temperature and stress. To investigate the problems and techniques involved in fabricating large, advanced nuclear fuel components from Zircaloy-2 material, several cladding pieces were designed and built using the electron beam process. These designs included five basic joint types for assembling the cladding. Destructive and nondestructive examinations were employed including corrosion testing and extensive metallographic examination. Weldment size, fit-up'' of the parts to be joined, fixturing and work carriage mechanisms, as they pertain to electron beam welding, are also discussed. The electron beam process has been demonstrated as a very satisfactory method for fabricating unusual fuel cladding. Fuel cladding components with lengths up to 8 ft have been fabricated for in-reactor irradiation. (auth)

The emanation of thoron (Rn/sup 220/) from sintered UO/sub 2/ powders and plates was measured as a function of temperature. The uranium oxide samples were indexed with radiothorium by coprecipitation and coevaporation techniques. The emanation measurements were performed in a flow system, using an alpha scintillation detector and a helium-hydrogen carrier gas mixture. Both the radiothorium concentration (5 to 100 mu C/g UO/sub 2/) and the uranium oxide density (71 to 99 percent TD) were varied. The surface areas and densities of the UO/sub 2/ plates were measured by krypton gas adsorption and liquid immersion techniques, respectively. Assuming a diffusion mechanism, diffusion coefficients for thoron in sintered UO/sub 2/ were calculated as a function of temperature. The data were represented by an equation of the form, D = D/sub O/ exp (-Q/RT). An apparent increase in both activation energy (Q) and D/sub O/ with density was observed for the 1100 to 1450 deg C temperature range. For some samples the thoron emanating power could be measured at temperatures as low as 400 deg C. Log D versus 1/T plots from 400 to 1450 deg C gave intersecttng straight lines with different activation energies. One intersection occurred near the Tammann temperature. …