ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
March 2025
Nuclear Technology
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February 2025
Latest News
RP3C Community of Practice’s fifth anniversary
In February, the Community of Practice (CoP) webinar series, hosted by the American Nuclear Society Standards Board’s Risk-informed, Performance-based Principles and Policies Committee (RP3C), celebrated its fifth anniversary. Like so many online events, these CoPs brought people together at a time when interacting with others became challenging in early 2020. Since the kickoff CoP, which highlighted the impact that systems engineering has on the design of NuScale’s small modular reactor, the last Friday of most months has featured a new speaker leading a discussion on the use of risk-informed, performance-based (RIPB) thinking in the nuclear industry. Providing a venue to convene for people within ANS and those who found their way online by another route, CoPs are an opportunity for the community to receive answers to their burning questions about the subject at hand. With 50–100 active online participants most months, the conversation is always lively, and knowledge flows freely.
Emin Yilmaz, Barclay G. Jones
Nuclear Technology | Volume 64 | Number 1 | January 1984 | Pages 88-100
Technical Note | Fission Reactor | doi.org/10.13182/NT84-A33329
Articles are hosted by Taylor and Francis Online.
A group of computer codes has been selected and obtained from the Nuclear Energy Agency data bank in France for the core conversion study of highly enriched research reactors. The ANISN, WIMS-D4, MC2, COBRA-3M, FEVER, THERMOS, GAM-2, CINDER, and EXTERMINATOR codes were selected for the study. For the final work, THERMOS, GAM-2, CINDER, and EXTERMINATOR were selected and used. A one-dimensional thermal-hydraulics code has also been used to calculate temperature distributions in the core. The THERMOS and CINDER codes have been modified to serve the purpose. Minor modifications have been made to GAM2 and EXTERMINATOR to improve their utilization. All of the codes have been debugged on both CDC and IBM computers at the University of Illinois. The International Atomic Energy Agency (IAEA) 10-MW benchmark problem has been solved. Results of this work have been compared with the IAEA contributors’ results. Agreement is very good for highly enriched uranium fuel. Deviations from the IAEA contributors’ mean value for low enriched uranium fuel exist, but they are small enough in general. Deviation of keff is ∼0.5% for both enrichments at the beginning of life and at the end of life. Flux ratios deviate only ∼1.5% from the IAEA contributors’ mean value.
