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Development of a Potential Facility Risk Index for Radiological Security

机译：制定放射安全潜在设施风险指数

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摘要

Given the threat of radiological and nuclear terrorism, it is imperative to understand and evaluate the security risk of radioactive sources. In this context, risk assessment is a function of threat, vulnerability, and consequences. Currently, no broad risk index exists for radiological facilities, such as healthcare centers and universities. This study aims to develop and demonstrate a methodology to compute a potential facility risk index (PFRI) based on a probable loss event (LE) and loss magnitude (LM) resulting from a radiological dispersal device (RDD) attack. The threat component of the PFRI is devised as a utility function weighing the threat group attributes and RDD radioactive material preference. The principles of probabilistic risk assessment and pathway analysis are implemented to account for RDD radioactive material theft probabilities in different attack scenarios. Locational hazards and nuclear security culture are measured as a function of radiological facility vulnerability for LE. The LM of the attack, in the form of loss of life and economic damage, is then estimated to construct the PFRI. The methodology is applied to a hypothetical healthcare facility with a single radioactive material asset. For this example, the PFRI resulted in a value of 2.0 (on a scale of 1-10), showing low risk to the facility. The development of the PFRI provides a risk analysis tool that may be useful in making decisions for radiological security improvements.
机译：鉴于放射性和核恐怖主义的威胁，必须了解和评估放射源的安全风险。在这种情况下，风险评估是威胁，漏洞和后果的函数。目前，没有广泛的风险指数对于医疗保健中心和大学等放射机构。本研究旨在开发和证明基于放射学分散装置（RDD）攻击所产生的可能损失事件（LM）来计算潜在设施风险指数（PFRI）的方法。 PFRI的威胁组件设计为权衡威胁组属性和RDD放射性物质偏好的实用功能。实施了概率风险评估和途径分析的原则，以考虑不同攻击情景中的RDD放射性物质禁止概率。作为LE的放射机构脆弱性的函数来衡量位置危险和核安全文化。然后，攻击的攻击的LM，然后估计损失和经济损伤的形式，以构建PFRI。该方法应用于具有单个放射性物质资产的假想医疗保健设施。对于该示例，PFRI导致值为2.0（按1-10的等级），对设施显示出低风险。 PFRI的开发提供了一种风险分析工具，可用于做出辐射安全改进的决策。

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