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The air quench prior to water quench during core heat treatment can be used to control slug distortion. In August 1959, a production test authorized the charging of 16 tubes of 43-second air quench material alternated with standard control material in C-Reactor. The test was charged on November 24, 1958, and discharged on April 26, 1959. This report summarizes and evaluates the irradiation performance of the material.

This document provides the required definitive scope design for dissolver equipment capable of nuclear safe processing by geometry of E-Metal and certain other fuels enriched to a maximum of one per cent U-235 equivalent. Using only a single dissolver installation of this design, it will be possible to process the current E-Metal monthly commitment in less than two weeks (five-day week). The proposed dissolver system is to incorporate design flexibility required to permit conversion to Zirflex processing of NPR fuels.

The Purpose of the work described in this report has been to determine experimentally the rate of production of tritiun in fringe lithium-aluminum alloy loadings with the degree of precision necessary for economic analyses of such a method of isotope production. These results are provided for use in such an analysis.

Detailed descriptions are given concerning the reactor design, operation, location, and the using agency. Potential hazards are evaluated along with safeguards. A supplement is included which further describes the reactor core. (J.R.D.)

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Water wells drilled in the Hanford Works area for water quality monitoring, water level determination and geologic information demand use of steel casing. This casing is required due to the inability of the unconsolidated sediments penetrated by the well to stand without support. It is obvious that openings in the casing must be provided to permit free communication with the water bearing formation if the well is to be useful for water quality determination, aquifer testing and water level information. A shaped charge system originally designed for oil well squeeze cementing was adapted for non-routine re-perforating of Hanford water wells. Ten-gram shaped charges developed by Jet Research Center, Arlington, Texas are utilized. The charge carrier is a special 5`` diameter, 5` long heavy-wall steel tube. This carrier or gun is so designed that in each plane of shots there are four horizontal charges placed at 90{degree} angles. These shot planes are placed 3`` apart and successive shot planes are phased at 45{degree} angles with respect to each other. A maximum of 16 perforations per foot may be made and a maximum of four feet perforated with one carrier. Tandem or multiple runs may be made if greater length and density …

This report contains brief discussions on reactor physics on: metallurgy; production piles; separation plants; plutonium recycle program; and cross section measurements.

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This report contains the weekly summaries for the Purex process at the Hanford Engineer Works for January 6, 1958 to December 29, 1958. Each summary includes uranium production, maximum operating rate, and waste loss statistics as well as an operating experience briefing. (JL)

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Sterility in C{sub 57} and Swiss mice has been produced by substituting D{sub 2}O for a part of the drinking water. The effective range lies between 5% and 30% D{sub 2}O. It appears that the effect is greater in C{sub 57} males than females and that the size and viability of the litter is affected.

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The scope of projects CG-558 and CG-600, a discussion of reactor hazards, a technical summary of pertinent aspects of reactor control and reactor cooling, and a discussion of development programs designed to increase efficiency of operation and further decrease the hazards are included in this document Volume 1 of this report.

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The continuation of a study of pressure drop across various combinations of staggered multihole orifice plates in series is described. Plates used in this test contained bevelled leading edge holes and were of the general design proposed for fiow control in the PWR blanket region. Variables examined in this test were orifice diameters of 0.300, and 0.625 in., one to six plates in series, and flow rates corresponding to orifice Reynold's numbers ranging from 15,000 to 140,000. The orifice plates and experimental methods employed in this test were similar to those described in the preceding orifice plate report. WAPDTH-241 (41 holes on a 0.486 in. square pitch located in a 4.195 in. diameter pipe), with the exception that the present plates had a 3O deg bevel around the leading edge of each hole sufficient in depth to make the bevelled diameter 1/16 in. larger than the hole diameter. Results are given as pressure loss coefficients (number of orifice velocity heads), and were found to be about 50% less than comparable values for squarc edge orifices. In general, Reynolds's number had no effect upon the loss coefficients. The loss coefficients are estimated to be accurate within plus or minus 10% over …

An LCAO molecular orbital calculation using the full six-electron hamiltonian has been per formed on Li2 a t a nuclear separation equal to 'the experimental internuclear distance. The molecular wave function consisted of one antisymmetrized product made up of molecular orbitals formed as the best linear combinations of Slater Is, 2s, and 2p atomic orbitals. The orbital exponents for these atomic orbitals were respectively 2. 69, 0.64 and 0. 53 as determined by a variational calculation on the lithium atom. In computing the molecular dissociation energy, the .energy of two separated lithium atoms was taken to be that obtained by this variational calculation. The computed dissociation energy was found to be 0. 33 ev compared with the experimental value of 1. 05 (where a slight correction for zero-point energy has been made). The ratio of the computed molecular ground-state energy to the experimental is 0. 9902 while the difference of these quantities is 4. 00 ev. Certain other molecular constants are calculated and compared with available experimental data.

This report addresses the progress report of ANP chemistry for April 1956.

This report talks about Chemical Development Status Report for Week Ending June 1, 1956

This report discusses the installation of operational charge-discharge equipment on the Hanford reactors has been proposed as a means of eliminating the reactor downtime required for charging and discharging the metal in the reactors. Additional benefits such as the minimization of the effects of slug ruptures, improved reactivity control, and improved metal utilization have become apparent during the investigation of the use of the equipment. Since the minimization of the effects of ruptures has been considered only qualitatively in previous justification documents for operational charge-discharge, the purpose of this document is to evaluate quantitatively the effect of such equipment on operation with a slug rupture limit.

A sprawling group of buildings on an impressive campus site in the Berkeley hills provides the home of the Radiation Laboratory of the University of California. A succession of large accelerators has been built there, the latest of which is the Bevatron. It is the largest and highest-energy accelerator in operation at the present time. It was built and is operated under contract with the United States Atomic Energy Commission. It is of the type known as a proton synchrotron, of which there are two others in operation, one at the University of Birmingham, England, whose energy is 1 Bev (billion electron volts), and another at the Brookhaven National Laboratory, known as the Cosmotron, which operates at 3 Bev. The Bevatron accelerates protons (stripped nuclei of hydrogen atoms) to an energy of 6.2 Bev. The design was started in 1947 under the direction of Professor E. O. Lawrence, and although it was the product of collaboration of a large group of physicists and engineers, the original conception was due to William Brobeck who also contributed more than any other individual. A working quarter-scale model was built and operated in 1948 and 1949 to verify the correctness of the design concept. …

To reduce manpower burn-out rates resulting from contamination on tools and equipment which are used to remove process tubes, a method for decontaminating, evaluated. The referenced document reported the results of a small scale test designed to remove film from inside the process tube prior to removal of the tube from the reactor. A more conclusive test was also outlined. The purpose of this document is to report the results of the larger scale test.