Pyroprocessing is a nonaqueous spent nuclear fuel recyclingtechnique. If implemented on a commercial scale, longstandingsafeguards approaches used to satisfy IAEA requirements intraditional aqueous-based processes may be unworkable. Toaid in testing elementary safeguards strategies, two new toolswere developed: (1) the Pyroprocessing Safeguards PerformanceModel, a MATLAB/Simulink simulation of plant operations capableof calculating inventory differences for a specified balance periodas well as sensitivity studies of detection measurements, and (2)the Safeguard Hazards Matrix, a risk matrix developed using thecalculated inventory difference and probability to detect diversionof one significant quantity to represent the risk of diversionwithin a reference facility. Using both tools, four strategieswere evaluated: (1) the black box, (2) conventional, (3) processinformed, and (4) process informed with rejection sampling. Anempirically derived quality factor was also developed to provide ameasure of the spread of the calculated inventory difference overthe course of operation. Process information, specifically massbalance data from a mass tracking system, significantly reducesthe safeguards risk in a pyroprocessing facility.
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机译：热解是一种非水乏核燃料回收 r n技术。如果以商业规模实施，则传统的水基工艺中用于满足IAEA要求的长期 r n n保障措施可能不可行。为了测试基本的保障策略，开发了两个新工具：（1）热解保障绩效 r n模型，一种能够对工厂运行进行库存差异计算的MATLAB / Simulink模拟工厂操作 r n指定的平衡期 r nas以及检测测量的敏感性研究，以及（2） r n“保障危害矩阵”，这是使用 r n计算出的存货差额和概率检测到的重大变化而开发的风险矩阵 r n代表参考设施内转移风险的数量。使用这两种工具，评估了四种策略：（1）黑匣子，（2）传统方法，（3）告知程序，（4）通过剔除采样告知过程。还开发了一个 n r n n n n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n r n后，才可以提供所计算出的库存差异在整个运营过程中的分布的度量。过程信息，特别是来自质量跟踪系统的质量平衡数据，可显着降低高温处理设施中的安全保障风险。
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