EVALUATION AND ANALYSIS OF USNRC MATERIAL ACCOUNTING TO SUPPORT AN UPGRADE RULE REDUCING THE THREAT OF INSIDER FALSIFICATION

The April 1978, NRC MC&A Task Force Report\"1 identified weaknesses in current material accounting (MA) systems. This report was motivation for two LLNL directed studies supporting an upgrade rule reducing the threat of insider MA falsification. A study completed in FY 79, involved the systematic evaluation and critique of current. MA regulations, development of a generic minimal MA system and identification of indicated system vulnerabilities^. The current study is a follow-on effort which examines the generic system vulnerabilities and develops or recommends 1) concepts, principles and methods for protecting MA data from falsification, 2) MA checks and balances for detecting theft or diversion and 3) MA organizational criteria which support safeguards effectiveness. The effect of implementation of developed safeguards protection principles is reported together with a graphic procedure which facilitates analysis and comprehension of results.