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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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Nuclear Science and Engineering
August 2025
Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
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.
Michal Cibula, Marco Pellegrini, Masato Mizokami, Shinya Mizokami
Nuclear Technology | Volume 211 | Number 3 | March 2025 | Pages 513-530
Research Article | doi.org/10.1080/00295450.2024.2339578
Articles are hosted by Taylor and Francis Online.
The Great East Japan Earthquake and subsequent tsunami that struck the Fukushima Daiichi Nuclear Power Station gave ground to a set of events that resulted in an unprecedented severe accident occurring simultaneously in multiple reactors of one nuclear power station and significant release of radioactive materials into the environment. Following these events, Tokyo Electric Power Company in cooperation with domestic and international partners has made continuous efforts to clarify in detail the progression of the accident utilizing both analytical tools and robotic inspections of the damaged units. Recently, multiple inspections utilizing submersible remotely operated vehicles were conducted between December 2022 and March 2023, including the first entry into the pedestal area below the damaged reactor pressure vessel of Unit 1. This paper discusses the findings of these inspections in light of the evolving understanding of the accident scenario, leveraging insights gained through experimental and analytical studies on ex-vessel severe accident phenomena. The outcomes of these investigations have yielded new knowledge and highlighted existing gaps in our understanding. The identified knowledge gaps provide direction for future studies, ultimately advancing the level of nuclear safety.