Regulatory Guide 5.5

Standard Methods for Chemical,Mass Spectrometric,And Spectrochemical Analysis of Nuclear-Grade Uranium Dioxide Powders and Pellets

ML003739552
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Issue date:	02/09/1973
From:	Office of Nuclear Regulatory Research
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RG-5.5
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2101r3 U.S. ATOMIC ENERGY COMMISSION

REGULATORY GL IDE

DIRECTORATE OF REGULATORY STANDARDS

REGULATORY GUIDE 5.5 STANDARD METHODS FOR CHEMICAL, MASS SPECTROMETRIC.

AND SPECTROCHEMICAL ANALYSIS OF

NUCLEAR-GRADE URANIUM DIOXIDE POWDERS AND PELLETS

A. INTRODUCTION

oxygen-uranium atomic ratio to verify stoichiometry, for verification of isotopic uranium composition, and for Paragraph 70.22(b) of 10 CFR Part 70, "Special various impurities such as carbbn, chloride, fluoride, Nuclear Material," requires an applicant for a license to moisture, nitrogen, sulfur, and trace elements. This possess certain quantities of speciad nuclear material in standard was approved by the ASTM on March 3, 1972, an unsealed form to describe, among other things, his and published in May 1972 with the designation C

procedures for control of and accounting for such 696-72.'

material. This guide identifies acceptable methods for chemical, isotopic, and impurity analysis which an

C. REGULATORY POSITION

applicant may specify as part of his procedures for accounting for special nuclear material. The analytical methods for the measurement of nuclear-grade uranium dioxide powders and pellets

B. DISCUSSION

contained in ASTM Standard C 696-72, "Standard Methods for Chemical, Mass Spectrometric, and Committee C-26 on Fuel, Control, and Moderator Spectrochemical Analysis of Nuclear-Grade Uranium Materials for Nuclear Reactor Applications of the Dioxide Powders and Pellets," are generally acceptable American Society for Testing and Materials (ASTM) has and provide an adequate basis for the assay, isotopic developed a standard containing some methods for the measurement, and impurity analysis of nuclear-grade analytical chemical analysis of nuclear-grade uranium uranium dioxide powders and pellets.

dioxide powders and pellets. These methods cover the analysis for uranium content by a titrimetric and gravimetric method to be used for uranium dioxide of 'Copies my be obtained from the Amuerean Socity for varying impurity levels and sample sizes, for Testing and Materials, 1916 Race St., Philadelphia. Pa. 19103.

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