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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Latest News
Ho Nieh nominated to the NRC
Nieh
President Trump recently nominated Ho Nieh for the role of commissioner in the Nuclear Regulatory Commission through the remainder of a term that will expire June 30, 2029.
Nieh has been the vice president of regulatory affairs at Southern Nuclear since 2021, though he is currently working as a loaned executive at the Institute of Nuclear Power Operations, where he has been for more than a year.
Nieh’s experience: Nieh started his career at the Knolls Atomic Power Laboratory, where he worked primarily as a nuclear plant engineer and contributed as a civilian instructor in the U.S. Navy’s Nuclear Power Program.
From there, he joined the NRC in 1997 as a project engineer. In more than 19 years of service at the organization, he served in a variety of key leadership roles, including division director of Reactor Projects, division director of Inspection and Regional Support, and director of the Office of Nuclear Reactor Regulation.
Martin E. Nelson, Dean A. Miller, Peter F. Wiggins, Gordon Riel, Thomas D. Strickler
Nuclear Technology | Volume 71 | Number 2 | November 1985 | Pages 512-519
Technical Paper | Technique | doi.org/10.13182/NT85-A33703
Articles are hosted by Taylor and Francis Online.
A new approach is described in the use of NE-213 detectors to perform neutron spectra measurements, which have been developed jointly by the U.S. Naval Academy and the Naval Surface Weapons Center. The approach is based on collecting a three-dimensional matrix of neutron and gamma-ray data. The dimensional plots of the collected data, which are computer generated, are used to ensure proper separation of the neutrons from gamma rays. After separation, the spectra are calibrated, binned, renormalized, and finally unfolded. In this manner neutron energy spectra and kerma are obtained. Linear attenuation coefficients for 14-MeV neutrons were determined by placing iron, lead, aluminum, polyester, and polyethylene-based materials between the neutron source and the NE-213 detector.
