Target identification procedure for plutonium reprocessing facilities

Lawrence Livermore Laboratory has developed, as a portion of the Nuclear Regulatory Commission Material Control Project, a methodology for identifying and ranking probable adversary targets in a plutonium reprocessing facility. This ranking is based on the ''atractiveness'' of the target material to an adversary. The basic subjective nature of this attractiveness has been made more rigorous and is based on the use of multiattribute utility theory and the inputs of knowledgeable experts. Once the attractive materials have been identified, the possible flow paths which could lead to diversion can be determined. A computer code has been developed which will automatically determine these flow paths from information contained within the plant process piping and instrumentation diagrams.