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Division Spotlight
Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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!
Latest Magazine Issues
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
General Kenneth Nichols and the Manhattan Project
Nichols
The Oak Ridger has published the latest in a series of articles about General Kenneth D. Nichols, the Manhattan Project, and the 1954 Atomic Energy Act. The series has been produced by Nichols’ grandniece Barbara Rogers Scollin and Oak Ridge (Tenn.) city historian David Ray Smith. Gen. Nichols (1907–2000) was the district engineer for the Manhattan Engineer District during the Manhattan Project.
As Smith and Scollin explain, Nichols “had supervision of the research and development connected with, and the design, construction, and operation of, all plants required to produce plutonium-239 and uranium-235, including the construction of the towns of Oak Ridge, Tennessee, and Richland, Washington. The responsibility of his position was massive as he oversaw a workforce of both military and civilian personnel of approximately 125,000; his Oak Ridge office became the center of the wartime atomic energy’s activities.”
Technical Session
Tuesday, September 27, 2022|10:00AM–12:05PM PDT|Harbor
Session Chair:
Hideo Hirayama (High Energy Accelerator Research Organization, KEK)
Alternate Chair:
Maha Bouhadida (IRSN)
Session Organizer:
Thomas M. Miller (ORNL)
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Investigation and Analysis of the TEPCO's Fukushima Daiichi NPS Accident (March 2021)
10:00–10:25AM PDT
Masaya Yasui (Nuclear Regulatory Agency)
Presented by Kohei Iwanaga (Nuclear Regulatory Agency Japan)
Paper
Estimation of 137Cs Activity Using Pinhole Gamma Camera at Unit 2 Operation Floor in Fukushima Daiichi Nuclear Power Station
10:25–10:50AM PDT
Katsumi Hayashi (Nuclear Regulation Authority), Hideo Hirayama (High Energy Accelerator Research Organization), Kohei Iwanaga (Nuclear Regulation Authority), Kenjiro Kondo (High Energy Accelerator Research Organization), Seishiro Suzuki (Nuclear Regulation Authority)
Estimated Cs-137 Radioactivity Deposited in the Gap Between the Top and Middle Cover of the Shield Plug in Fukushima Daiichi Nuclear Power Station Unit 2
10:50–11:15AM PDT
Kohei Iwanaga (Nuclear Regulatory Agency), Hideo Hirayama (High Energy Accelerator Research Organization), Katsumi Hayashi (Nuclear Regulatory Agency), Kenjiro Kondo (Nuclear Regulatory Agency), Seishiro Suzuki (Nuclear Regulatory Agency), Zenko Yoshida (Nuclear Regulatory Agency)
Radiation Environment Around the Contaminated Water Storage Tank Including Highly Concentrated 90Sr/90Y at Fukushima Daiichi Nuclear Power Station
11:15–11:40AM PDT
Hideo Hirayama (Nuclear Regulatory Agency), Kenjiro Kondo (Nuclear Regulatory Agency), Seishiro Sszuki (Nuclear Regulatory Agency), Shimpei Hamamoto (Nuclear Regulatory Agency), Kohei Iwanaga (Nuclear Regulatory Agency)
Neutron Spectra Reconstruction with an Artificial Neural Network Trained with a Large Built Dataset
11:40AM–12:05PM PDT
M. Bouhadida (IRSN), M. Brovchenko (IRSN), T. Vinchon (IRSN), W. Monange (IRSN), F. Trompier (IRSN)
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