Year
1980
Abstract
This paper presents the results of a preliminary evaluation of the relative effectiveness of perimeter monitors in reducing the probability of the unauthorized diversion of labeled special nuclear material (SNM) from fuel refabrication plants. A comparison of non-detection probabilities for different combinations of plant safeguards systems and fuel types was also made. Four safeguards systems were evaluated including the reference plant which is the conceptualized fuel fabrication facility used in a study by SAI for the U.S. Nuclear Regulatory Commission. The referenced plant consisted of seven material access areas used as \"starting points\" for the diversion. Only one portal monitor is located at the plant entrance. The three other plants evaluated in this study are (a) the \"modified\" reference plant which contains portal monitors in every exterior portal, (b) the reference plant with perimeter monitoring, and (c) the modified reference plant with perimeter monitoring.