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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U.S. ATOMIC ENERGY COMMISSION REGULATORY GL DIRECTORATE OF REGULATORY STANDARDS REGULATORY GUIDE 5.5 STANDARD METHODS FOR CHEMICAL, MASS SPECTROMETRI AND SPECTROCHEMICAL ANALYSIS OF NUCLEAR-GRADE URANIUM DIOXIDE POWDERS AND PELLETSA. INTRODUCTION Paragraph 70.22(b) of 10 CFR Part 70, "Special Nuclear Material," requires an applicant for a license to possess certain quantities of speciad nuclear material in an unsealed form to describe, among other things, his procedures for control of and accounting for such material. This guide identifies acceptable methods for chemical, isotopic, and impurity analysis which an applicant may specify as part of his procedures for accounting for special nuclear materia B. DISCUSSION Committee C-26 on Fuel, Control, and Moderator Materials for Nuclear Reactor Applications of the American Society for Testing and Materials (ASTM) has developed a standard containing some methods for the analytical chemical analysis of nuclear-grade uranium 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 varying impurity levels and sample sizes, for2101r3IDEoxygen-uranium atomic ratio to verify stoichiometry, for verification of isotopic uranium composition, and for various impurities such as carbbn, chloride, fluoride, moisture, nitrogen, sulfur, and trace elements. This standard was approved by the ASTM on March 3, 1972, and published in May 1972 with the designation C 696-72.' C. REGULATORY POSITION The analytical methods for the measurement of nuclear-grade uranium dioxide powders and pellets contained in ASTM Standard C 696-72, "Standard Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Uranium Dioxide Powders and Pellets," are generally acceptable and provide an adequate basis for the assay, isotopic measurement, and impurity analysis of nuclear-grade uranium dioxide powders and pellet 'Copies my be obtained from the Amuerean Socity for Testing and Materials, 1916 Race St., Philadelphia. Pa. 19103.U EC REGULATORY GUIDE$ of I ma -m obtaid by req m dobleu dmA U Yo tile US. Alomic Empg Cowulen. Wapse. OC. 2 Rpustory Guides we imuad to demcribe and mgke "milod to the public Atetmlak: Okaeror o a Comuof mid toemgus 1w nailthoc abble to ldo AEC Ragulatesrv stafl of nma gl seific pars " lOiIproitnomU In Onom mifdt m ~wwsuread aW haM d be sent to go @alaoSine trw Comrmnsmen's regulutions. to dWia udmchniclua maued by the eta" in of film Cn- I ', o. U.S. Atomic Energv Comndmei. Waduls .D.C. 20M wi ptll fIn M c p-oblawn or ostulted oneWesd .or to wopwid gumbnin "" Attontion: Chiel. Public Promiinp Sto impns. Raillv Guid as not -akuIte for ralleliefs and tonpiim wlk "tem ir ni t rnquired Methods aMd tolitom sff met frm them f at gut in The pT1 we kmm In the lfoll, 0 tSn broa dWeaons: sh @e well km acoolibbe if tlay Would@ a basi for tm findings requniste to the .isuarm or ominuanm of a pmrm* or kc~ by thw CommissIon. 1. Pow Reactors 6. Prouct 2. Resasrch and Tes Rheactors 7. Trausportation 3 Fues mci Melteria Facilities a. Occupo:stonl t"em Pubalsted g6&s "it be rmd dl kr riod alro , y. a ippropriate, to accuol u mts 4. Enwironiental end Siting 9. Antitruat wsur comnenints o-d to reflect now or esnvarm. S. sad Plant Prtecllon 10. General