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Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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The U.S. Million Person Study of Low-Dose-Rate Health Effects
There is a critical knowledge gap regarding the health consequences of exposure to radiation received gradually over time. While there is a plethora of studies on the risks of adverse outcomes from both acute and high-dose exposures, including the landmark study of atomic bomb survivors, these are not characteristic of the chronic exposure to low-dose radiation encountered in occupational and public settings. In addition, smaller cohorts have limited numbers leading to reduced statistical power.
Sang Min Han, Poong Hyun Seong (KAIST)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1088-1094
The aim of this study is to propose initiating threats and their bounding groups in order to identify initiating cyber threats, and to further apply the initiating threats to cyber risk assessment in nuclear power plants (NPPs). NPP are generally thought to be secure from cyber-attacks, as the control/monitoring network and business network in a NPP are separate from the external network. However, consecutive incidents at nuclear facilities have revealed the necessity of cyber risk assessment for NPPs. To determine initiating threats and their bounding groups for NPP, Operational experience report (OER) and repository of industrial security incidents (RISI) database were utilized. Each of the chosen incidents was documented with descriptions based on the following five characteristics: 1) type of attacker, 2) intentionality, 3) access method, 4) access type, and 5) purpose of the attack. The proposed organization of initiating threats and their bounding groups for NPPs represent a valid first attempt to determine such threats based on actual industrial incidents. This advance can also be further applied to describe scenarios and models of NPP cyber-risk assessments.