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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
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
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July 2025
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Latest News
NRC’s David Wright visits the Hill and more NRC news
Wright
The Nuclear Regulatory Commission is in the spotlight today for three very different reasons. First, NRC Chair David Wright was on Capitol Hill yesterday for his renomination hearing in front of the Senate’s Environment and Public Works Committee. Second, the NRC released its updated milestone schedules according to the Nuclear Energy Innovation and Modernization Act (NEIMA) and the executive orders signed by President Trump last month; and third, as reported by Reuters on Tuesday, 28 former NRC officials have condemned the dismissal of Commissioner Hanson earlier this month.
Renomination: EPW Committee chair Sen. Shelley Moore Capito (R., W.Va.) opened the hearing with a statement praising Wright’s experience and emphasized the urgency of stable leadership at the NRC.
“China is executing a rapid build-out of its nuclear industry,” Capito said. “The demand for clean, baseload power is skyrocketing as we position America to win the AI race.”
Technical Session|Sponsored by NCSD
Thursday, November 19, 2020|2:30–4:15PM EST
Session Chair:
William J. Marshall
Alternate Chair:
Travis M. Greene
Session Organizer:
Vladimir Sobes
Staff Producer:
Kathy Murdoch (American Nuclear Society)
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Feasibility Study for a Proposed Subcritical Assembly at Oak Ridge National Laboratory
Douglas G. Bowen (Oak Ridge National Laboratory)
Paper
VADER: A Tool for Criticality Safety Validation
Justin B. Clarity (Oak Ridge National Laboratory), Shane W. Hart (Oak Ridge National Laboratory), William Wieselquist (Oak Ridge National Laboratory), William J. Marshall (Oak Ridge National Laboratory)
Updated Primers Generated for SCALE 6.2 for KENO V.a and KENO-VI
Kursat B. Bekar (Oak Ridge National Laboratory), Justin B. Clarity (Oak Ridge National Laboratory), Mathieu Dupont (Oak Ridge National Laboratory), Robert A. Lefebvre (Oak Ridge National Laboratory), William J. Marshall (Oak Ridge National Laboratory), Ellen M. Saylor (Oak Ridge National Laboratory)
Improved Runtime Performance in KENO-VI Models Using Arrays and Holes
William J. Marshall (Oak Ridge National Laboratory), Bret D. Brickner (Holtec International)
The Need for a Maximum Intensity Accident in ANS 8-Series Standards
Timothy Jackson (Y-12), James Yugo (Y-12), Jeff Goodman (Y-12)
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