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This report details events of importance reported by the Hanford Operations Office for the week ending June 1, 1949.

This report details events of importance as reported by the Hanford Operations Office for the week ending June 29, 1949.

This report details events of importance reported by the Hanford Operations Office for the week ending June 15, 1949.

This report details events of importance reported by Hanford Operations Office for the week ending June 22, 1949.

This report details events of importance reported by the Hanford Operations Office for the week ending June 8, 1949.

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The report includes recommendations on flow sketches; 68% nitric acid specifications; dissolver off-gas and ventilation air treatment; installation of standby equipment (details included in Appendix A); schedule of scope drawing specifications and arrangement drawings; mechanical development program (details included in Appendix B); and scope of work on waste disposal facilities (Appendix C).

This document details activities at the Hanford Engineer Works during the month of May 1949.

Topics discussed included scope of work by the Kellex Corporation; Redox Production Plant procurement; bearing capacity of soils and other site characterization for the Redox Production Plant site; purchase of Moyno pumps; scope drawing schedules; 68% nitric acid requirements for the process; pump development for the Redox Production Plant; vessel specifications; Design basis letters on electrical distribution, steam distribution, raw and filtered water distribution, and railroads. The report includes a letter on materials of construction for 202-S building equipment.

Topics discussed include gang valve substitute devices; cost of lining cell bottom with stainless steel; and the pump development program. [The Redox plant used a reduction-oxidation process for fuel separation that allowed recovery of uranium as well as plutonium for the first time. It succeeded earlier plants (T and B) that had used methods based on the bismuth phosphate process that recovered only plutonium.]

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Recommendations discussed included the transfer of Waste Metal Recovery from the Kellex Corporation; the Kellex contract revisions for their work on the design of the Redox Production Plant; procurement and inspection procedures; aluminum nitrate supply and procurement; and waste recovery with the tributyl phosphate and hexane process.

This progress report discusses activities for the P Division for the month of May 1949. The nominal operating level for both B and F Piles was 275 megawatts (MW) throughout the month except for outages listed under Area Activities. The D Pile operated at 275 MW until May 23 when the nominal level was raised to 290 MW in the first step of the program covered in Production Test No. 105-260-P to evaluate the feasibility of operating piles at higher power levels. A total of 44 tons of metal, at an average concentration of 285 megawatt days/ton (MWD/ton), was discharged from the piles during the month. Considerable difficulty was experienced during the month with stuck tubes containing Class IV (alpha-rolled, triple-dipped, randomly transformed) metal. A total of nine tubes with concentrations in the range of 320--370 MV/ton was encountered. As a result of these difficulties with the Class IV material, future discharges of this type metal will be limited to concentrations in the range 300--320 MWD. Approximately one ton of Class V (alpha-rolled, triple-dipped, completely transformed) metal was discharged at a concentration of 368 MV/ton for test purposes. Inspection of this material indicated that all the slugs were in satisfactory …

Abstract: "The sensitivity to fast neutrons of a CP Meter ionization chamber of the type used for health physics beta and gamma survey measurements has been investigated."

Abstract: "A method has been established for the estimation of volatile organic acids in aqueous process solutions containing UNH, nitric acid, ANN, sodium dichromate and small amounts of hexone. The practice is to distill a 400 ul or 500 ul sample in the presence of an excess of phosphoric acid and ferrous sulfate under a high vacuum; a special apparatus utilizing a receiver cooled with a dry ice-isopropanol mixture is employed. The distillate is taken up in isopropanol and then titrated potentiometrically with standard potassium hydroxide solution. Since nitric acid and organic acids are present, two end points are observed. The potassium hydroxide added between these end points is equivalent to the organic acids. In the titration, CO2 from the atmosphere or in the potassium hydroxide is a source of error. The former was avoided and correction was made for the latter."

Abstract: "A new method of determining 8-hydroxyquinoline by titration with electrolytucally-generated bromine has been developed. Results show good precision in the range 0.4 mg. to 1.6 mg. total 8-hydroxyquinoline, with 99% confidence limits of less than +/- 2%. An electronically-regulated constant current source, required by the method, is described. A new indicator system with high sensitivity to free bromine is discussed."

Report discussing the results of research conducted by the Hanford Works Analytical Research Group during the period from March 1949 to April 1949.

From introduction: "This is the first report on the study made of the possible power recovery without excessive cost, from the operation of the Brookhaven reactor."

From summary: "Petrographic, X-ray, and analytical studies were made on synthetic and natural zirconium minerals containing varying amounts of hafnium."

The following document describes the process of rare beryllium extrusion using graphite introductory cones with the purpose of finding a lubricant which would decrease excessive friction between the billet and prose parts.

This report analyzes an interspecies (man, dog, rat and mouse) comparison of the radiotoxicities of x-ray, SR-89, and PU-219, based on work done prior to July 1, 1946.

The following report covers the results of a general program that was conducted at the Oak Ridge National Laboratory to investigate the effects on plastic materials of exposure to radiation in the pile. In the investigation, several plastics were irradiated, and on removal from the pile, their rates of decay were determined by measurement of gamma activity in an ionization chamber.

From Foreword: "The program described herein proposed the use of a traveling bridge crane with fixed position, totally enclosed cab, as a means for maintaining and repairing the canyon area of a chemical process plant handling highly radioactive solutions."