RG 5.28-74 相关标准章节.docxVIP

Publication Date: 6/1/74  Pages: 2  Date Entered: 2/22/84  Title: EVALUATION OF SHIPPER-RECEIVER DIFFERENCES IN THE TRANSFER OF SPECIAL NUCLEAR MATERIALS  June 1974  U.S. ATOMIC ENERGY COMMISSION  REGULATORY GUIDE  DIRECTORATE OF REGULATORY STANDARDS  REGULATORY GUIDE 5.28  EVALUATION OF SHIPPER-RECEIVER DIFFERENCES  IN THE TRANSFER OF  SPECIAL NUCLEAR MATERIALS A. INTRODUCTION  Paragraph (g) of proposed section 70.58 of 10 CFR Part 70 (38 FR  3077) would require certain AEC licensees authorized to possess special  nuclear material to establish, maintain, and follow procedures for  reviewing and evaluating shipper-receiver differences. This guide  identifies concepts, principles, and methods that are acceptable to the  Regulatory staff for determining significant shipper-receiver  differences. B. DISCUSSION  Statistical controls are required as an integral part of special  nuclear materials control and accounting systems to assure that  licensees of fuel processing and fuel fabrication facilities effectively  account for the special nuclear material they possess and identify  losses when they occur. An important statistical indicator of control  is an observed shipper-receiver difference, which results from comparing  two independent determinations of transferred material. A  shipper-receiver difference is the difference between the amount stated  by the shipper as having been shipped and the amount stated by the  receiver as having been received.  Essential to a comprehensive evaluation of the significance of  this indicator are statistical techniques using associated limits of  error for testing whether detected differences may be attributable to  measurement error. The power or discernibility of such significance  tests depends on the quality and amount of data evaluated.  The shipper and receiver of transferred material should