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This document describes the scope of the C-431-B Reactor Production Facility. In dealing with the broad phases of the project, it includes the Sections ``A`` (Scope Modifications) of the approved Design Criteria, modified to ensure correctness to date. Location of the facility has been set as shown on the site map in HDC-2101, designated site number one. Included in Project C-431-B are the 105-C Building, including within that building facilities previously located in the 1608 Building, a contaminated effluent crib adjacent to 105-C, and gas facilities using the 115-B Building interconnected with 105-C. Also included are an oil shed, a thimble storage cave, a badge house, and an exclusion fence. Building services and process lines will be considered part of the project to a location nominally five feet outside of 105-C.

This is a memorandum from the Hanford Operations Office about the possibility of tritium wastes escaping into the atmosphere. The waste which is disposed of in burial grounds eventually migrates to the Columbia River where it evaporates into the atmosphere. Also included in this memo is a statement of an error in the units of some data compiled for the monitoring of the tritium wastes. (MB)

This report discusses particle size measurements with a modified cascade impactor of the particulate matter in the dissolver off-gases during the period of maximum gas evolution, and during the air sparge of the dissolver solution after the completion of the dissolving cycle which indicate that the mass-size median of the particles was less than 0.1 micron in both cases. The measurements were made, unfortunately, at a time when the efficiency of the silver reactor upstream to the sampling point was low enough to permit appreciable amounts of iodine through to the cascade impactor. The samples were therefore permitted to decay for thirty-five days before the relative amounts of radioactivity on the stages of the impactor and the follow- up filter paper were evaluated. The size of the particles obtained, 0.1 micron, should be considered primarily as an order of magnitude rather than an absolute value, because the cascade impactor (as well as any other impaction device) can not give an accurate value for the particle size in this size range.

This volume is one set of a series which has been prepared as a record of the research work done under the Manhattan Project and the Atomic Energy Commission.

Minor changes in materials and methods resulted in increased yields in the production of fuel elements for the Bulk Shielding Facility. Attempts to bond uranium to a mercury-- silver alloy resulted in bonds of insufficient strength. Thorium alloys containing 2 to 4% Nb. Cr. Mn, Ti, Zr, Be. Al, and Si were prepared. The alloys containing Be, Al. or Si were hard, brittle, and not cold-workable. The alloys containing the other elements were coldworkable in the as-cast condition. Impact testing of pure thorium, using standard V-notch specimens, revealed a transition from brittle to tough behavior at 120 to 200 deg C. The determination of UAL/sub 4/: UAL/sub 3/ ratios, lattice parameters, and microstructures for the Al--Si--U system is reported. It was found that for a 20% uranium alloy, only 0.8% Si is necessary to completely suppress the formation of UAL/sub 4/. In general, ferritic iron--chromium alloys appeared more resistant to static corrosion by 1000 deg C lithium and lead than did austenitic alloys. Compatability tests with combinations of Mo, UO/sub 2/ BeO, Nb, and stainless steels 309 and 316 are discussed. True stress-natural strain-time diagrams for copper at room temperature are presented. (See also ORNL-2839.) (C.J.G.)

BS>Various types of wood, steel, and aluminum window construction, glazed with plastic and different kinds of glass, were installed on four sides of a test structure during the greenhouse tests in order to determine their relative resistance to an atomic blast. The degree of protection from flying glass provided by mounting Venetian blinds, insect screens, and 1/4-in. mesh wire netting on the inside of window openings was also determined. The best results seem to indicate that the resistances of different types of glass to an atomic blast are approximately proportional to their strength in supporting static loads. Glass mounted in a rigid frame is less likely to be broken than if mounted in a flexible frame which may be distorted by the blast. Fragments from wire or safety glass are less dangerous to personnel than fragments from other types of glass, and plastic is less likely to break than glass, Commercial types of Venetian blinds and insect screens afforded littie or no protection against flying glass fragments at the distance at which tested; however, a blind with some of the parts reinforced and properly anchored to the window opening would. probably give some protection at a distance of 3 miles …

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The operating holdup and flooding rates of uranium hexafluoride, n-heptane, and perfluorodimethylcyclohexane have been studied in a glass still filled with 1/8 inch nickel Heli-Pak. The flooding rates of the latter two substances are 46.0 and 48.0 cc./min. respectively and the flooding rate for uranium hexafluoride, calculated from the Bertetti equation, is 42.9 cc./min. The operating holdups for these three substances on Heli-Pak were measured at several throughput rates up to the flooding rate and an equation derived, based on the method of Jesser and Elgin, for computing the holdup of uranium hexafluoride from a knowledge of the holdup of perfluorodimethylcyclohexane. Observations of the performance of the packing and a measurement of the number of drops of uranium hexafluoride per milliliter at 75 deg C. are also presented.

The work presented in this volume concludes the research on methods for the recovery of purified radium from K-65 residues. The completion of a final report and an engineering study of the proposed process are underway. The preliminary treatment of the K-65 residues with 15% sodium hydroxide was checked and found to give 84% removal of lead and 40% removal of silica. The combined sodium hydroxide, sodium carbonate treatment for removing additional amounts of lead and achieving a preliminary conversion of the radium-barium silfates to carbonates has been studied at 170 deg C under pressure as well as at 100 deg C as previously used. A marked improvemont was found with the use of higher temperatures. Alternate methods were studied for removing the residual lead content in place of precipitation with hydrogen sulfide. Precipitation of insoluble hydroxides was found to remove about 90% of the lead present. The over-all recovery of radium in the residues treatment has been checked and found to be better than 98%. The work on the separation of radium from barium by fractional precipitation of the chromates has shown that in actual practices the results are in good agreement with the results calculated from the observed …

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A tentative nickel-plutoniuni constitutional diagram was based on data obtained by thermal analysis, metallography, and x-ray-diifraction techniques. The systema is a complex one with the following important features. Nickel is soluble in epsilon plutonium, extending the epsilon field to 4.3 at.% nickel at 465 deg C. Nickel and plutonium form six intermetallic compounds, PuNi, EnNi/sub 2/, PuNi/sub 3/, PuNi/sub 4/, PuNi/sub 5/, and PuNi/sub 9/. The compound PuNi/ sub 5/ forms congruently from the melt at approximately l300 deg C, whereas the other compounds forma peritecticaliy. The extended epsilon field termainates in a eutectoid reactlon at 415 deg C and l.5 at.% nickel. Epsilon plutonium and the compound PuNi form a eutectic system at 465 deg C with a eutectic compcsition of l2.5 at,% nickel. Nickel and the compound PuNi/sub 9/ form a eutectic system at l2l0 deg C with a eutectic composition of 92 at.% nickel. Plutonium forms a limited solid solution with nickel. (auth)

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A number of alloys of zirconium have been investigated as part of a program aimed at improving the high-temperature tensile strength of zirconium. These alloys include molybdenum, tantalum, tungsten, tin, titanium, and nitrogen alloys. It was found that small additions of molybdenum, tantalum, tin, titanium, and nitrogen appreciably increase the high-temperature tensile strength of zirconium.

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Further measurements have been made on the photoproduction of neutral mesons using the gamma-gamma coincidence technique. New data have been obtained on the gamma-gamma correlation curves in beryllium. The angular distribution of the photo mesons in Be has been determined and found to be strongly peaked forward. The dependence on the atomic number A of production has been found to obey an A{sup2/3} law. Some data obtained for production in hydrogen show that the pi-zero and pi-plus production cross sections are comparable and that the pi-zero excitation curve starts more slowly from threshold than does the pi-plus photo excitation curve.

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The arguments leading to the formulation of the Action Principle for a general field are presented. In association with the complete reduction of all numerical matrices into symmetrical and anti-symmetrical parts, the general field is decomposed into two sets, which are identified with Bose-Einstein and Fermi-Dirac fields. The spin restriction on the two kinds of fields is inferred from the time reflection invariance requirement. The consistency of the theory is verified in terms of a criterion involving the various generators of infinitesimal transformations. Following a discussion of charged fields, the electromagnetic field is introduced to satisfy the postulate of general gauge invariance. As an aspect of the latter, it is recognized that the electromagnetic field and charged fields are not kinematically independent. After a discussion of the field-strength commutation relations, the independent dynamical variables of the electromagnetic field are exhibited in terms of a special gauge.

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