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Hydrofluosilicic acid as a cap and can etchant

Description: Aluminum caps and cans are thoroughly cleaned, before being used to can slugs, to insure wetting of the metal surfaces by molten AlSi in the canning pot. An acid bath is used, as part of the cleaning operations to remove surface oxide and other surface films from the metal. Two acid solutions are authorized in the standard operating procedure; a 20% phosphoric acid solution for etching both caps and cans, and a 1% hydrofluosilicic acid solution to be used for caps only. It is desired to determi… more
Date: March 17, 1953
Creator: Dixon, D. S.
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HYDROGEN AND OXYGEN ISOTOPES APPLIED TO THE STUDY OF WATER-METAL REACTIONS. EXCHANGE OF D$sub 2$O$sup 18$ WITH ALPHA ALUMINA MONOHYDRATE

Description: Isotopes of hydrogen and oxygen may be useful in elucidating the mechanism of aqueous corrosion reactions, in which an important step may be diffusion of protons and/or hydroxyl for oxide) ions through a thin protective film. The technique of isotope exchange and the kinetic isotope effect both appear applicable. For the reaction between water and aluminum, the product (above 90 deg C) is alpha -alumina monohydrate ( alpha -AlCDH). The exchange of D/sub 2/O/sup 18/ with alpha -AlOOH (sub-micron… more
Date: August 1, 1958
Creator: Bernstein, R.B.
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The Hydrogen Content of Fabricated Uranium

Description: The hydrogen contents of several types of fabricated uranium have been determined by a vacuum method and expressed in terms of ccH2/ccU. The data indicate that alpha-rolled metal contains about 0.25 ccH2(STP)/ccU whereas beta heat-treated uranium yielded values between 0.30 and 0.37 cc per cc. Restricted efforts were made to determine where in the heat treatment the 5 to 10 cc of hydrogen per slug were taken up. It appears that no one operation is wholly responsible for this additional gas, … more
Date: November 30, 1953
Creator: Ray, W. E. & Bowen, H. C.
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Hydrogen Embrittlement of Zirconium

Description: Abstract: "The amount of hydrogen normally present in zirconium and zirconium alloys suffices to reduce their ductility greatly in an impact test at room temperature, after slow cooling from 600 F. Quenching from 600 F or above gives high impact strength, as does removal of hydrogen by high-temperature vacuum annealing. This report discusses the evidence on hydrogen embrittlement, the diffusion, solid solubility, and equilibrium pressure of hydrogen of hydrogen in zirconium, the microstructure,… more
Date: August 22, 1952
Creator: Dayton, Russell Wendt; Schwope, A. D.; Muehlenkamp, G. T.; Saller, Henry A.; Dickerson, R. F.; Schwartz, C. M. et al.
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Hydrogen Embrittlement of Zirconium

Description: The amount of hydrogen normally present in zirconium and zirconium alloys suffices to reduce their ductility greatly in an impact test at room temperature, after slow cooling from 6OO deg F. Quenching from 6OO deg F or above gives high impact strength, as does removal of hydrogen by hightemperature vacuum aanealing. The evidence on hydrogen embrittlement, the diffusion, solid solubility, and equilbrium pressure of hydrogen in zirconium the microstructure, and the effects of hydrogen and heat tr… more
Date: August 22, 1952
Creator: Dayton, R. W.; Schwope, A. D.; Muehlenkamp, G. T.; Saller, H. A.; Dickerson, R. F.; Schwartz, C. M. et al.
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Hydrogen Flammability Data and Application to PWR Loss-of-coolant Accident

Description: Supplemental to WAPD-SC-54l. A summary is presented of generalized data on the flammability of hydrogen in steam-air mixtures. The flammability data are applied to a postulated Pressurized Water Reactor loss-of-coolant accident and to estimates of the potential pressure effects on the PWR plant container. (C.H.)
Date: September 1, 1957
Creator: Shapiro, Z. M. & Moffette, T. R.
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Hydrogen for Turbojet and Ramjet Powered Flight

Description: Memorandum presenting various reports regarding the use of hydrogen for turbojet and ramjet powered flight. Some of the characteristics considered include the combustion properties, potential fueling problems, and flight experience with hydrogen on-board.
Date: April 26, 1957
Creator: Lewis Flight Propulsion Laboratory
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Hydrogen-oxygen explosions in exhaust ducting

Description: Results from an experiment indicated that the ignition of hydrogen-oxygen gas mixtures at a pressure of 1 atmosphere in a 2-foot-diameter duct resulted in detonation combustion. The use of a duct for the rocket exhaust may permit a reduction of the noise output and allow for the cooling and chemical treatment of the exhaust gases. The use of water jets and water sprays distributed through the duct did not prevent a detonation but did reduce peak pressure.
Date: April 1957
Creator: Ordin, Paul M.
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Hydrogen Peroxide Analysis and Decomposition in Chromate Solutions

Description: Abstract: "A novel procedure employing ion exchange resins was developed to separate chromate ions from hydrogen peroxide, permitting, permitting the subsequent analysis of peroxide to determine its decomposition in sodium chromate solutions. At high pH's, peroxide was absorbed anionically on the ion exchange resins along with chromate. By selecting a resin which would be effective at nearly neutral conditions, chromate was satisfactorily separated from peroxide. It was found that the rate of p… more
Date: March 17, 1952
Creator: Rynasiewicz, Joseph & Ryan, J. W.
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A hydrogen peroxide turbojet-engine simulator for wing-tunnel powered-model investigations

Description: Report presenting a turbojet-engine-exhaust simulator utilizing a hydrogen peroxide gas generator developed for powered-model testing in wind tunnels with air exchange. The problems associated with jet exhaust simulation in a transonic wind tunnel which led to the selection of a liquid monopropellant are discussed. Static-data obtained with convergent nozzles are presented and shown to be in good agreement with ideal calculated values.
Date: November 4, 1957
Creator: Runckel, Jack F. & Swihart, John M.
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HYDROGEN PICKUP DURING CORROSION OF ZIRCONIUM ALLOYS

Description: Several factors such as alloy composition, hydrogen content of the alloy, surface hydrides, and hydrogen content of the water have been investigated for their effect upon the amount of hydrogen picked up by zirconium alloys during corrosion in 680 deg F water. Metallic additions of nickel increase hydrogen pickup, antimony, chromium, and iron appear to decrease the hydrogen pickup, while the addition of tin has little or no effect. The hydrogen content of the metal (50 to 400 ppm) or of the wat… more
Date: September 24, 1959
Creator: Berry, W.E.; Vaughan, D.A. & White, E.L.
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Hydrogen Production in the Calcium and Magnesium-Nitric Acid Reactions (Deleted Version)

Description: For greater understanding of possible explosion hazards, data are needed of the volume of H/ evolved in the Ca and Mg reactions with nitric acid. Nearly five liters of H/sub 2/ per mole of Ca are produced when 16M nitric acid reacts with Ca metal. The hydrogen evolved slowly increases with decreasing nitric acid to below 4M nitric acid, when a rapid increase occurs. The Mg--nitric acid reaction produces only one liter of H/sub 2/ per mole of Mg with 2M nitric acid, and the volume of H/sub 2/ de… more
Date: August 19, 1955
Creator: Myers, M. N.
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HYDROGEN REDISTRIBUTION IN THIN PLATES OF ZIRCONIUM UNDER LARGE THERMAL GRADIENTS

Description: By using experimental data, the quantities determimng the extent of dissolved H redistribution under a thermal gradient in Zircaloy were calculated. It is concluded that the phenomenon of hydride precipitation by means of thermaI gradient diffusion of dissolved H in Zircaloy fuel plates and cladding places much more severe restrictions on the allowable pre-operation H content of such elements than was hitherto suspected. The specific effects of operating conditions on H content of plates and cl… more
Date: January 1, 1958
Creator: Markowitz, J. M.
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Hydrogen Slowing-Down Method for Criticality Calculations

Description: A criticality equation is derived assuming slowing-down only by hydrogen. The use of criticality experiments as a basis for calculation is described. Approximate methods are given for handling inharmonicities and multi-region reactors. Some criticality data on solutions of U03 dissolved in H3PO4 are listed in Appendix 1, and the Goertzel-Selengut equations are derived in Appendix II.
Date: September 1953
Creator: Bendt, Philip Joseph, 1919-
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Hydrogenation of Petroleum and Lignite Tar Distillates

Description: Report issued by the U.S. Bureau of Mines regarding the operation of the Coal Hydrogenation Demonstration Plant in Missouri. This report summarizes the operating experience gained and the characteristics of the products created during operation of the plant. The report includes graphs, tables, and illustrations.
Date: April 1950
Creator: Clarke, E. A.; Chaffee, C. C. & Hirst, L. L.
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Hydrogeochemical and Stream Sediment Reconnaissance Basic Data for Eau Claire NTMS Quadrangle, Wisconsin; Minnesota

Description: From abstract: Results of a reconnaissance geochemical survey of the Eau Claire Quadrangle, Wisconsin; Minnesota are reported. Field and laboratory data are presented for 565 groundwater samples, 680 stream sediment samples, and 667 stream water samples. Statistical and areal distributions of uranium and other possible uranium-related variables are displayed. A generalized geologic map of the survey area is provided and pertinent geologic factors which may be of significance in evaluating the p… more
Date: May 15, 1958
Creator: National Uranium Resource Evaluation Program
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Hydrologic and Tracer Studies in Mohawk River at Knolls Atomic Power Laboratory

Description: Preface: In 1948, the U.S. Geological Survey, in cooperation with the Atomic Energy Commission, initiated a study of the hydraulics and hydrology of Mohawk River in the vicinity of the Knolls Atomic Power Laboratory (KAPL) near Schenectady, N.Y. The purpose of this study was to determine the probable effects of release of low concentrations of radioactive wastes from the Laboratory to Mohawk River.
Date: July 1959
Creator: Simpson, Eugene Sidney; Beetem, W. A. & Ruggles, F. H., Jr.
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THE HYDROLYSIS OF THE COMPOUND OF POTASSIUM WITH IRRADIATED GRAPHITE

Description: Potassium, the reaction product of graphite with potassium, and the reaction product of irradiated graphite with potassium were subjected to hydrolysis. The gases evolved from the respective samples were analyzed mass spectroscopically. Hydrocarbons (methane and a trace of ethane) were found in the gas evolved from the irradiated graphite compound only, and the quantity was about that which would have been expected from the number of non-aggregated displaced atoms. The result was obtained for a… more
Date: September 12, 1955
Creator: Primak, W.L. & Quarterman, L.A.
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The Hydrolysis of Tributyl Phosphate Ad Its Effect on the Purex Process

Description: From abstract: "The rate of hydrolysis of TBP and the effect of the hydrolysis products in the Purex Process have been studied. Hydrolytic conditions may be encountered in the process which would lead to formation of dibutyl phosphoric acid, causing significant losses of tetravalent plutonium in stripping. This situation may be easily alleviated by reducing and stripping the plutonium in the trivalent state."
Date: December 13, 1951
Creator: Reilly, V. J. & Lanham, W. B.
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