ABSTRACT A security issue on nuclear facilities will give a significant effect on national security, economy, public health, or the combination among them. The evaluation of physical security effectiveness is done by considering it as a probability that the system will defeat an adversary at a particular time. This research examined the effectiveness of Physical Protection Systems (PPS) of a nuclear research reactor in Indonesia, as a role model facility. Three possible adversary scenarios were assessed. Estimation of Adversary Sequence Interruption model was implemented to assess the physical security system. The estimation of the effectiveness of physical-cybersecurity combination was done by Bounding Analysis Approach. The effectiveness of security system with cyber system working properly was assessed and compared with the system receiving cyber attacked. The results showed that the system effectiveness is high (0.839, 0.949, and 0.837, respectively). The results showed that the assessment method is effective to examine whether a security element is working effectively or not in such facility. This work will be useful as base guidelines for nuclear regulatory body and licensee for the application and evaluation of PPS and provision of countermeasure strategies in RSG GAS, and for further benefit, it can be used by nuclear facilities.

中文翻译：

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使用有界分析方法进行核安保系统有效性评估：不同对手情景的案例研究

摘要 核设施安全问题将对国家安全、经济、公共卫生或三者的综合产生重大影响。物理安全有效性的评估是通过将其视为系统在特定时间击败对手的概率来完成的。这项研究检查了印度尼西亚核研究反应堆实物保护系统 (PPS) 作为榜样设施的有效性。评估了三种可能的对手场景。实施了对抗序列中断模型的估计来评估物理安全系统。物理-网络安全组合有效性的估计是通过边界分析方法完成的。评估了网络系统正常工作的安全系统的有效性，并与受到网络攻击的系统进行了比较。结果表明，系统有效性较高（分别为 0.839、0.949 和 0.837）。结果表明，该评估方法可有效检查安全要素在此类设施中是否有效工作。这项工作将作为核监管机构和许可证持有者应用和评估 PPS 以及在 RSG GAS 中提供对策策略的基本指南，并且为了进一步的利益，它可以被核设施使用。结果表明，该评估方法可有效检查安全要素在此类设施中是否有效工作。这项工作将作为核监管机构和许可证持有者应用和评估 PPS 以及在 RSG GAS 中提供对策策略的基本指南，并且为了进一步的利益，它可以被核设施使用。结果表明，该评估方法可有效检查安全要素在此类设施中是否有效工作。这项工作将作为核监管机构和许可证持有者应用和评估 PPS 以及在 RSG GAS 中提供对策策略的基本指南，并且为了进一步的利益，它可以被核设施使用。