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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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
Dec 2025
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Nuclear Science and Engineering
January 2026
Nuclear Technology
December 2025
Fusion Science and Technology
November 2025
Latest News
What’s the most difficult question you’ve been asked as a maintenance instructor?
Blye Widmar
"Where are the prints?!"
This was the final question in an onslaught of verbal feedback, comments, and critiques I received from my students back in 2019. I had two years of instructor experience and was teaching a class that had been meticulously rehearsed in preparation for an accreditation visit. I knew the training material well and transferred that knowledge effectively enough for all the students to pass the class. As we wrapped up, I asked the students how they felt about my first big system-level class, and they did not hold back.
“Why was the exam from memory when we don’t work from memory in the plant?” “Why didn’t we refer to the vendor documents?” “Why didn’t we practice more on the mock-up?” And so on.
Technical Session|Nuclear Thermal Propulsion
Wednesday, May 8, 2024|10:00–11:40AM MDT|Coronado/DeVargas
Session Chair:
Lindsey Holmes
Alternate Chair:
Session Organizer:
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Initial Verification of ntpThermo against Mixcoatl for Computationally Efficient Multiphysics Analysis of Nuclear Thermal Propulsion Reactors
10:00–10:25AM MDT
Seth Nettersom (BWX Technologies), Drew Bergeon (BWX Technologies), Bryan Zilka (BWX Technologies), Matt Krecicki (BWX Technologies)
Paper
Preliminary Full-Core Analysis of Nuclear Thermal Propulsion Reactors Using Nodal Diffusion Codes
10:25–10:50AM MDT
Jake Smith (Georgia Tech), Dan Kotlyar (Georgia Tech)
Preliminary Sensitivity Studies Using a Newly Developed System Code for NTP Analysis
10:50–11:15AM MDT
R. Myers (Georgia Tech), D. Kotlyar (Georgia Tech)
Coupled Reactor and Engine Nuclear Thermal Propulsion Modeling Methodology
11:15–11:40AM MDT
Jacob Stonehill (Analytical Mechanics Assoc.), Daria Nikitaeva (Analytical Mechanics Assoc.), Corey Smith (Analytical Mechanics Assoc.), Matthew Duchek (Analytical Mechanics Assoc.)
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