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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
Jul 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
Monday, May 8, 2023|1:30–3:10PM MDT|Boise Room
Session Chair:
Kurt Polzin
Session Organizer:
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ECSPLORER: A Pre-Conceptual Design of an Electronuclear System for Space
1:30–1:50PM MDT
F. Bertrand (CEA), J.B. Droin (CEA), M. Charlier (CEA), T. Daulle (CEA), Y. Gorsse (CEA), A. Entringer (CEA), P. Allegre (CEA), A. Gerschenfeld (CEA), E. Proust (CEA), P. Bultel (CNES)
Paper
Design of a 10 MWth Heat Pipe-Cooled Reactor for Nuclear Electric Propulsion Applications
1:50–2:10PM MDT
Aaron She (Ultra Safe Nuclear), Nolan MacDonald (Ultra Safe Nuclear), Doug Grieson (Ultra Safe Nuclear), Wesley Deason (Ultra Safe Nuclear), Jeffrey Diebold (Advanced Cooling Technologies), Calin Tarau (Advanced Cooling Technologies)
Attachment
Parametric Analysis of the Design Point for a Centrifugal Nuclear Thermal Rocket Fuel Element
2:10–2:30PM MDT
Joel Krakower (NASA Marshall Space Flight Center), David Austin (Drexel Univ.), Dhruv Shah (Drexel Univ.), Yanni Tsetsekos (Drexel Univ.)
Design and Performance Analysis of a Radial-Inflow Turbine for the Centrifugal Nuclear Thermal Rocket
2:30–2:50PM MDT
Joel Krakower (NASA Marshall Space Flight Center)
Nuclear Electric Propulsion Flight Demonstrator Vehicle and Mission Concept
2:50–3:10PM MDT
Timothy Kokan (Aerojet Rocketdyne), Jacob Evans (Aerojet Rocketdyne), C. Russell Joyner II (Aerojet Rocketdyne), Daniel J. H. Levack (Aerojet Rocketdyne), Brian J. Muzek (Aerojet Rocketdyne), Rodney W. Noble (Aerojet Rocketdyne), Christopher B. Reynolds (Aerojet Rocketdyne)
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