Physical security system, which is also called physical protection system, is very crucial in the nuclear industry for protecting staff, visitors, buildings, assets, and nuclear materials against theft, sabotage, and harmful activities. Theft of nuclear materials has a major impact on the essence of nuclear safeguards. Sabotage of a nuclear facility could endanger the public at large. Reviewing the published literature, it is found that there are no complete physical security system designs based on an integrated network of electronic devices that are devoted to commercial NPPs. And there is no definite evaluation factor that was set to approve such a system. This paper is an evolving solution to this deficiency by proposing an unpreceded integrated security system design applicable to a commonly structured physical layout of any commercial NPP. This proposal provides comprehensive security coverage for the NPP boundaries employing a high level of integration for all subsystems communicated via an IP data network controlled by central management software. This paper is proposing also testing procedures to be followed to evaluate the proposed design. The security system effectiveness will be calculated using mathematical codes by assuming external intrusion attack scenarios. Attributes of each attack scenario will be numerically introduced to the evaluation software EASI and ASSESS codes developed by Sandia Labs, USA. This paper also proposes a threshold value of such security system effectiveness which should be achieved by the commercial NPP security system to achieve the so-called security license.

中文翻译：

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商用核电站综合安全系统（ISS）设计与评估

物理安全系统（也称为物理保护系统）在核工业中对于保护员工，访客，建筑物，资产和核材料免遭盗窃，破坏和有害活动至关重要。核材料的盗窃对核保障措施的实质具有重大影响。破坏核设施可能危害整个公众。回顾已发表的文献，发现没有基于专用于商用NPP的电子设备集成网络的完整物理安全系统设计。而且，没有设置明确的评估因素来批准这种系统。本文提出了一种适用于任何商业NPP通用结构物理布局的无与伦比的集成安全系统设计，是针对此缺陷的一种不断发展的解决方案。该提议为NPP边界提供了全面的安全保护，并为通过由中央管理软件控制的IP数据网络通信的所有子系统提供了高度集成。本文还提出了要遵循的测试程序，以评估所提出的设计。通过假设外部入侵攻击情况，将使用数学代码来计算安全系统的有效性。每个攻击场景的属性都将以数字方式引入到美国Sandia Labs开发的评估软件EASI和ASSESS代码中。本文还提出了这种安全系统有效性的阈值，商业NPP安全系统应达到该阈值才能获得所谓的安全许可证。