Publication Date: 1/1/1901     Pages:     Date Entered: 2/22/84     Title: WITHDRAWN SEE 44 CFR 57542, 10/05/79     September 26, 1979     REGULATORY GUIDE DISTRIBUTION LIST (DIVISION 5)Regulatory Guide 5.2, "Classification of Unirradiated Plutonium and     Uranium Scrap," issued December 20, 1972, is being withdrawn. It     endorses two standards, ANSI N15.1-1970, "Classification of Unirradiated     Uranium Scrap," and ANSI N15.10-1972, "Classification of Unirradiated     Plutonium Scrap," that have been withdrawn by the American National     Standards Institute. Equivalent recommendations to those contained in     the standards and guide have been incorporated in the current material     classification codes contained in the instructions for Form NRC-741,     "Nuclear Material Transaction Report." The withdrawal of Regulatory     Guide 5.2 does not affect any licensing commitments.     Regulatory guides may be withdrawn when they are superseded by the     Commission's regulations, when equivalent recommendations have been     incorporated in applicable approved codes and standards, or when changes     in methods and techniques or in the need for specific guidance have made     them obsolete.     Robert B. Minogue, Director Office of Standards Development     12/20/72     U.S. ATOMIC ENERGY COMMISSION     REGULATORY GUIDE     DIRECTORATE OF REGULATORY STANDARDS     REGULATORY GUIDE 5.2     CLASSIFICATION OF UNIRRADIATED PLUTONIUM AND URANIUM SCRAP A. INTRODUCTION     Part 70 of the Atomic Energy Commission's regulations requires     each licensee to maintain material control and accounting procedures for     the special nuclear material in his possession under license. A key     component of such a system is an accurate, measured material balance. A     significant factor in obtaining such a material balance is the     determination of the quantity of nuclear material contained in     inventories of heterogeneous scrap. Segregation and identification of     various types and classes of such scrap can materially assist in the     determination of the nuclear material contents by providing information     necessary for the selection of appropriate measurement methods and for     the correction of measurement results for such things as impurities,     poisons, self-absorption, or self-multiplication. This guide describes     acceptable standard classifications for both plutonium and uranium     "cold" scrap to aid in determining material balances. B. DISCUSSION     Subcommittee N15.1, of the American National Standards Institute     (ANSI) Standards Committee N15, Methods of Nuclear Materials Control,     has developed two standards for the classification of "cold" scrap     containing plutonium or uranium. The standard for the classification of     uranium scrap was approved by ANSI in 1970. The standard for the     classification of plutonium scrap was approved by the ANSI Board of     Standards Review on July 25, 1972. C. REGULATORY POSITION     The classifications for plutonium and uranium "cold" scrap     contained in the following ANSI standards are generally acceptable and     are sufficiently flexible to be applicable to a wide variety of nuclear     facilities:     ANSI N15.1-1970     Classification of Unirradiated Uranium Scrap.(1)     ANSI N15.10-1972     Classification of Unirradiated Plutonium Scrap.(1)----------     (1) Copies may be obtained from the American National Standards     Institute, Inc., 1430 Broadway, New York, New York 10018.     ----------     41