MAIT Application to the Analysis of Commercial Power Plants

A study was conducted for the U.S. Nuclear Regulatory Commission (NRC) to determine the applicability of the Matrix Analysis of the Ijisider Jhreat (MAIT) \"code to\" the analysis of sabotage vulnerabilities of commercial power reactors. The sabotage of concern was the initiation of a release of radioactivity in excess of 10 CFR 100 guidelines. The MAIT code was initially developed for application to theft from fuel cycle facilities, with a defined threat of colluding insiders. In this project, the code was modified to evaluate single, insider saboteurs at commercial reactors. Additional modifications were made to the code to provide the capability to efficiently analyze multiple vital areas (Type II) as targets. An analysis of vulnerabilities of the Type II vital targets results in the identification of insiders authorized to enter two or more of the necessary companion vital areas. Generic Boiling Water Reactor (BWR) and Pressurized Water Reactor (PWR) plants were analyzed and their vulnerabilities identified with the modified code. Proposed safeguard alternatives, such as multiman rules, area controls, and operational controls were analyzed in an attempt to provide guidance on the various protection options. The effect of these safeguard upgrades on operations, manpower and hardware costs were analyzed using simulation model ing.