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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!
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Nuclear Science and Engineering
January 2026
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December 2025
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November 2025
Latest News
Blades-in turbine inspections at Quad Cities set new benchmark for Constellation
When Constellation decided to install replacement Alstom low-pressure turbines at three of its boiling water reactor plants more than 15 years ago, one benefit was knowing the new turbines should operate reliably—and without major inspections—for several years.
Nuclear and Emerging Technologies for Space (NETS-2022) Plenary SPeaker
Propulsion and Nuclear Scientist,Defense Innovation Unit
NASA
Maj Ryan Weed is a physicist and USAF Experimental Test Pilot, logging over 2000 hours in more than 30 different aircraft. Ryan is a NASA Innovative Advanced Concepts (NIAC) Fellow, studying radioisotope positron propulsion systems. He has worked at Blue Origin, where he designed and implemented an Instrumentation laboratory for cryogenic rocket fuels, and founded Positron Dynamics, where he designed and built a positron beamline facility and developed high specific impulse propulsion concepts. Ryan earned a B.A in Physics from Wesleyan University, B.S. in Applied Physics from Columbia University, M.Sc. in Flight Test Engineering from Air University, and PhD in Physics from Australian National University. In his current role at DIU, Ryan manages the Nuclear Propulsion and Power program within the Space Portfolio.
Last modified April 5, 2022, 9:19am EDT