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Wednesday, August 12, 2020 | History

1 edition of Methods for the accountability of plutonium dioxide found in the catalog.

Methods for the accountability of plutonium dioxide

Methods for the accountability of plutonium dioxide

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Published by for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington, D.C .
Written in English

    Subjects:
  • Plutonium dioxide.

  • Edition Notes

    StatementR. G. Gutmacher...[et al.]
    ContributionsGutmacher, R. G., Lawrence Radiation Laboratory. General Chemistry Division., U.S. Atomic Energy Commission. Directorate of Regulatory Standards
    The Physical Object
    Pagination192 p. in various pagings :
    Number of Pages192
    ID Numbers
    Open LibraryOL22385621M

    Other articles where Plutonium dioxide is discussed: uranium processing: Conversion to plutonium: plutonium nitrate is converted to plutonium dioxide (PuO2) either for conversion to plutonium metal (weapons-grade plutonium) or for recycling into nuclear reactor fuel. Like uranium, metallic plutonium is usually obtained by high-temperature reduction of a halide salt (plutonium tetrafluoride. ASTM-C - Standard Test Method for Radiochemical Determination of Plutonium in Soil by Alpha Spectroscopy; ASTM-C - Matrix for LWR Spent Fuel Receiving and Storage (Withdrawn ) ASTM-C - Standard Specification for Sintered (Uranium-Plutonium) Dioxide Pellets — Fast Reactor Fuel (Withdrawn ).

    Need help? Chat now. Live Chat - Free Trial - Webinar - Feedback Cart (0). Pressure buildup in the inner container for high-purity plutonium dioxide (PuO 2) under normal storage conditions is expected to yield internal pressures of less than pounds per square inch gauge (psig) from all known pressurization mechanisms except water desorption and vaporization. An internal pressure of psig is indicative of.

    (1) The nuclear properties of plutonium dioxide fuel components were obtained from the literature. (2) Sources of gamma radiation produced by the pri- mary plutonium isotope decays, and by the fuel contaminants (which may change with fuel process- ing methods), were identified and . Uranium processing, preparation of the ore for use in various products.. Uranium (U), although very dense ( grams per cubic centimetre), is a relatively weak, nonrefractory metal. Indeed, the metallic properties of uranium appear to be intermediate between those of silver and other true metals and those of the nonmetallic elements, so that it is not valued for structural applications.


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Methods for the accountability of plutonium dioxide Download PDF EPUB FB2

Methods for the accountability of plutonium dioxide (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: R G Gutmacher; F Stephens; K Ernst; S P Turel; T E Shea; Lawrence Radiation Laboratory.

General Chemistry Division.; U.S. Atomic Energy Commission. Abstract. On cover: General Chemistry Division, Lawrence Livermore Laboratory; Directorate of Regulatory Standards, U.S.

Atomic Energy Commission."December ""UC. A method is described for the dissolution of plutonium dioxide, followed by determination of the plutonium content by controlled-potential coulometry. The plutonium dioxide is brought into solution by fusion with a mixture of sodium peroxide and sodium hydroxide at ° C for 15 minutes in Cited by: 7.

Plutonium metal spontaneously oxidizes to PuO 2 in an atmosphere of oxygen. Plutonium dioxide is mainly produced by calcination of plutonium(IV) oxalate, Pu(C 2 O 4) 2 6H 2 O, at °C. Plutonium oxalate is obtained during the reprocessing of nuclear fuel as plutonium is dissolved in HNO 3 /ance: Dark yellow crystals.

An algorithm of certification of plutonium dioxide by the coulometric method is described. The results of measuring the mass fraction of Pu in PuO2, obtained in certifying and confirming. A non-destructive wavelength dispersive X-ray fluorescence (WDXRF) spectrometric method for direct determination of uranium and plutonium in as fabricated annular sintered (U, Pu)O2 mixed oxide (MOX) pellets avoiding the traditional cumbersome sample preparation involving dissolution or comminution–pelletization of sample has been developed.

USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords plutonium oxalate dioxide temperature heating Prior art date Legal status (The legal status is an assumption and is.

Stoichiometric uranium dioxide UO is stable relative to liquid sodium, but the contact of the mixed oxide fuel with liquid sodium results in an increase of the oxygen concentration in the liquid sodium in conjunction with the reduction to a lower valency of the plutonium in the oxide phase.

The equilibrium reaction for hyperstoichiometric UO 2+x in contact with sodium is 14, The physics and chemistry of the actinide elements form the scientific basis for rational handling of nuclear materials. In recent experiments, most unexpectedly, plutonium dioxide has been found.

He reports the surface area of the plutonium dioxide particles to be m 2 /g determined by an unspecified method. In the desorption experiments, water starts desorbing from one site at °C and from a second site at °C.

Standard Test Method for Determination of Plutonium Isotopic Composition by Gamma-Ray Spectrometry: ASTM C REDLINE: Standard Test Method for Nondestructive Assay of Plutonium, Tritium and Am by Calorimetric Assay: ASTM C SPECIFICATION FOR NUCLEAR-GRADE PLUTONIUM DIOXIDE POWDER FOR LIGHT WATER REACTORS.

This test method describes the determination of total plutonium as plutonium(III) in nitrate and chloride solutions.

The technique is applicable to solutions of plutonium dioxide powders and pellets (Test Methods C), nuclear grade mixed oxides (Test Methods C), plutonium metal (Test Methods C), and plutonium nitrate solutions (Test Methods C).

Total Gas in Reactor-Grade Plutonium Dioxide Pellets. Plutonium Isotopic Abundance by Alpha Spectrometry. Americium in Plutonium by Gamma-Ray Spectrometry. Rare Earths By Copper Spark-Spectroscopy. 78 to Plutonium Isotopic Analysis by Mass Spectrometry. 88 to Oxygen-To-Metal Atom Ratio by Gravimetry.

97 to A major problem in the nuclear industry is the dissolution of refractory plutonium dioxide. Of all of the metal oxides capable of producing reasonably concentrated solutions in dilute acids, plutonium dioxide is one of the most, if not the most, difficult to dissolve. The difficult task of dissolution of PuO2 on a process scale has been largely confined to scrap reprocessing and recovery.

CONTAINED IN VOL. Describes finished sintered (uranium-plutonium) dioxide pellets. It applies to (uranium-plutonium) dioxide pellets containing plutonium additions in the range from 10 to 40 weight percent and uranium of any []U content.

A fusion with ammonium hydrogen sulphate at ° C has been developed for the dissolution of refractory materials containing plutonium dioxide. On cooling, each melt is leached with sulphuric acid to produce a solution suitable for analysis for plutonium by electrometric methods.

Plutonium concentrations (about 2 m. The volatility of plutonium dioxide has been measured in the temperature range °C to °C by a modification of the Knudsen effusion method. The plutonium dioxide was heated in vacuum in a tantalum oven. Under these conditions the dioxide was reduced to a lower oxide, or oxides, which maintained a constant reproducible vapor pressure throughout further heating.

analysis for the accountability of plutonium dioxide powder. DISCUSSION The i*awrence Livermore Laboratory and the U.S. Atomic Energy Commission have recently published a document (WASH ) entitled -Methods for the Accountability of Plutonium Dioxide Powder." This document describes methods for the sampling, sub.

@article{osti_, title = {METHOD OF MAKING PLUTONIUM DIOXIDE}, author = {Garner, C S}, abstractNote = {A process is presented For converting both trivalent and tetravalent plutonium oxalate to substantially pure plutonium dioxide.

The plutonium oxalate is carefully dried in the temperature range of toDEC by raising the temperature gnadually throughout this range. Standard methods for chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade plutonium dioxide powders and pellets Book Standard procedures are given for determination of plutoninm by controlled potential coulometry, by ceric sulfnte titration method, by amperometric titration with iron(II), and by mass spectroscopy.

C Specification for Nuclear-Grade Plutonium Dioxide Powder for Light Water Reactors. C Guide for Design Criteria for Plutonium Gloveboxes. C Terminology Relating to Nuclear Materials. C Guide for Qualification of Measurement Methods by a Laboratory Within the Nuclear Industry.

C Test Method for Plutonium by Controlled-Potential.C Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Plutonium Dioxide Powders and Pellets (Redline) Edition: $ Unlimited Users -. Results show that PuO2+ x, a high-composition (x ≤ ) phase containing Pu(VI), is the stable binary oxide in air.

This nonstoichiometric oxide forms by reaction of dioxide with water and by water-catalyzed reaction of dioxide with oxygen. The PuO2 + H2O reaction rate is nanomoles per meter squared per hour at 25°C; the activation energy at 25° to °C is 39 kilojoules per mole.