COMPUTER MODEL FOR PREDICTING NUCLEAR MATERIAL TRACKING SYSTEM PERFORMANCE

The NPROB is a nuclear-material tracking system, computer simulation program developed by the Security Applications Center of the Westinghouse Hanford Company and by Boeing Computer Services of Richland, Washington. The NPROB is being developed under the Nuclear Material Tracking System Program sponsored by the U.S. Department of Energy (DOE). The NPROB predicts the probability that a Nuclear Material Tracking System composed of one or more nuclear radiation detectors will detect an unauthorized movement of special nuclear material (SNM) inside a nuclear facility. The NPROB simulates the performance and system alarm logic of nuclear radiation detectors installed along process aisles and plant corridors near processing and storage areas. The NPROB predictions can be used to help determine facility compliance with DOE Order 5633.3[1] if radiation detectors are used to control SNM.