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The Determination of Fluoride in Plutonium Metal by Thorium Titration

Description: Abstract: "A titrimetric method for the determination of fluoride in plutonium is reported. Prior to a steam distillation of the fluoride, the bulk of the plutonium is separated by precipitation of the sulfate. The fluoride in the distillate is titrated at a pH of 3.2 with 0.001 M thorium nitrate, using chrome azurol-S indicator. Applied to samples containing 1 to 15 parts per million fluoride, the recovery is 87% and the precision on the 95% confidence level is +/- 0.65 ppm."
Date: May 4, 1954
Creator: Ferguson, W. S. & Newell, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Summary of Small Source Theory Applied to Thermal Reactors

Description: A small source model for neutron flux distribution in heterogeneous reactors is proposed. Such a model takes more explicit account of fuel lumping than has been customary in most pile calculations. The small source is applied to the cases of plate and rod fuel elements. The chief results are equations which give the pile buckling in terms of the distance between fuel elements and in terms of fuel element constants. (W.D.M.)
Date: December 6, 1954
Creator: Horning, W. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Aeolotropic Elastic Relations for Uranium Crystals

Description: Handwritten report. This theoretical introduction to the anisotropic elastic properties of the orthorombic [sic] uranium crystal presents certain basic ideas which are useful in the study of experimental methods for determining preferred orientations in polycrystalline bodies. The method of analysis used to determine the elastic constants suggests explanations and correlations for the observations of sonic wave experiments on bars having preferred orientations and also serves as an introduction… more
Date: December 17, 1954
Creator: Merckx, K. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Flame Photometric Determination of Tributylphosphate

Description: The study of the flame photometric method for determining the concentration of tributylphosphate (TBP) in a hydrocarbon diluent was undertaken because it showed promise of being economically competitive and subject to fewer interferences than the existing methods. The determination of TBP in the hydrocarbon solutions throughout the range 0.01 to 80 per cent TBP may be performed using the flame photometer. The principal conclusions resulting from the study found a that there was higher precision… more
Date: December 15, 1954
Creator: Brite, D. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactivity Temperature Coefficient of High Exposure Fuel

Description: The presence of large amounts of plutonium in high exposure uranium will give rise to a large, positive, graphite reactivity, temperature coefficient. This will create control problems in normal operation and also in the event of loss of cooling. Some general suggestions are given for the solution of these problems. The magnitude of the coefficient is probably known within ± 25% at present and a program is planned to reduce this uncertainty. The uncertainty is of minor importance in the operati… more
Date: December 13, 1954
Creator: Gast, P. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Anodic Etching Procedure for Uranium: Useful Lifetime of Baths Without Regeneration

Description: The useful lifetimes of the phosphoric-hydrochloric anodic etching solution and the nitric acid stripping solutions were studied. Groups of uranium wafers of surface areas approximately 0.033 sq ft were anodically etched and stripped. From the losses in weight observed, it was concluded that at least three square feet of uranium may be anodized per liter of phosphoric-hydrochloric acid solution without regeneration. The nitric acid stripping solution was found to be satisfactory for at least on… more
Date: December 14, 1954
Creator: Pitzer, E.C.; Katayama, Y. B. & Budke, W. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Fission Cross Section f Factor of Pu²³⁹

Description: A presentation of the values for the Pu²³⁹ fission cross section f factor extended into a higher energy range than previously reported in BNL-250. The values were obtained by integrating the standard expression defining the f factor on the Hanford IBM-CPC equipment. The un-fit experimental data of Leonard, as corrected for resolution and doppler effect, was used above 0.03 ev being attached to an analytic fit applicable below this point. Results are shown on the accompanying graph.
Date: December 16, 1954
Creator: Stuart, G. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Air Sample Activity vs Flow Rate

Description: A bibliography on the subject of air sample activity vs flow rate has been prepared. The findings in two documents reviewed have been applied directly to this problem. It is concluded that air sample activity is not dependent on flow rate when sampling particles whose average diameter in 0.06 micron or greater.
Date: December 27, 1954
Creator: Clark, R. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Determination of Product Variability

Description: One of the distinguishing features of many chemical production processes is that the process variation is obscured by measurement errors which are of the same order of magnitude or greater. This paper will discuss some elementary means of estimating true product variability under these conditions.
Date: December 30, 1954
Creator: Bennett, Carl A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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