The vapor pressure of bromine trifluoride has been measured over the range 39 to 155 C. and the following equation was derived by methods of least squares to represent the experimental data. log{sub 10}P{sub mm} = 7.74853 - l685.8/(t + 220.57). The heat of vaporization was estimated from the following equation which is based upon the Clausius-Clapeyron relation. {Delta}H{sub cal/mole} = 7714 [(t + 273.16)/(t + 220.57)]{sup 2}. In continuation of the program to measure the physical properties of interhalogens, the vapor pressure of bromine trifluoride has been determined. Ruff and Braida (4) measured some of the physical and chemical properties including the vapor pressure over a limited range, 4 to 136 mm. The present investigation extends the vapor pressure data to 2 l/2 atmospheres on material of high purity.

This memorandum discusses the expected life of the piles with regard to additional production capacity.

This memorandum discusses factors involved in the additional production capacity of Hanford Works.

Siimplified shielding calculations indicating the proposed design for the water boiler assembly will reduce the radiation at normal operaton to values well below those which are considered tolerable.

The outstanding economy of the Redox process when compared with the BiPO{sub 4} process dictates that as much production as possible, and as soon as possible, should be shifted from the BiPO{sub 4} process to Redox (202-S). It is proposed that the capacity basis for the subject study be for as much as 200 tons of uranium and up to 105 kilograms of plutonium per month, assuming that facilities proposed for these capacity levels will not interfere with the operating flexibility of the plant, if it is required to produce at the original rate of an average of 75 tons of uranium per month with the attendant plutonium.

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