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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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 2024
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
December 2024
Nuclear Technology
Fusion Science and Technology
November 2024
Latest News
SRS celebrates successes during National Apprenticeship Week
The Department of Energy’s Savannah River Site in South Carolina recently joined in the nationwide celebration of the Department of Labor’s 10th annual National Apprenticeship Week, spotlighting the progress and diversity of its apprenticeship program that spans 27 occupations.
Click here to watch a video highlighting the SRS Apprenticeship Program.
The Paul A. Greebler Memorial Scholarship was established by the Reactor Physics Division (RPD) in 1985 for undergraduate students pursuing a degree in nuclear science and engineering.
In 1997, RPD requested the award be renamed the Allan F. Henry/Paul A. Greebler Scholarship.
In 2001, RPD changed the eligibility from undergraduate, to full-time graduate students of a U.S. university engaged in Masters or Ph.D. research in the area of nuclear reactor physics or radiation transport.
Allan F. Henry
Allan F. Henry (1925-2001) was a charter member and Fellow of the American Nuclear Society.
After World War II, Henry, who held a Ph.D. in physics from Yale University, joined Bettis Atomic Power Laboratory as a senior scientist, working on the design of the Nautilus core. He served as manager of the reactor theory and methods group at Bettis from 1954 to 1969. Dr. Henry was a professor at the Massachusetts Institute of Technology from 1969 to 2001.
Dr. Paul Greebler
Dr. Paul Greebler ( - 1983) was a leader in ANS activities, an outstanding nuclear reactor physicist, and a true gentleman whose company all of his associates enjoyed.
Paul Greebler received his BS in Physics from the U of Colorado in 1944 and then joined the US Army Signal Corp during WWII. He was discharged in 1946 and worked for Johns-Manville Corp as a senior research physicist from 1946 to 1955, primarily in the area of heat transfer technology. During this period, in 1954, he received his Ph.D. in Physics from Rutgers University. Paul joined General Electric in 1955, and from that point until his death in 1983 Paul worked in the nuclear reactor engineering area with an emphasis on reactor core design, critical experiment design and analysis, and reactor plant safety.
Although Paul was a major contributor to the overall technology of reactor design during the start of the peaceful nuclear power era, a significant technical achievement was his1960 discovery that the Doppler Effect could be a major safety element for the Fast Breeder Reactor. Prior to Paul's work, the Doppler Effect was thought to be too small to affect reactor operation, and fast reactors of the time were designed on the basis of a zero Doppler coefficient, with dependence entirely on core expansion for a negative power coefficient. This led to limitations on the design of fast reactors, and to concerns about their commercial practicality.
Paul's work led to the building of the Southwest Experimental Fast Oxide Reactor, SEFOR, in the late sixties; a project sponsored by the then Atomic Energy Commission, 17 utilities in the southwest, the Karlsruhe Laboratory of West Germany, and Euratom. Paul played a key part in designing the reactor and the experimental program, and in carefully pre-calculating the results of the tests. The final tests had SEFOR go prompt critical, with the Doppler Effect turning the power excursion around. Had one not seen Paul's predictions beforehand, one would have thought his curves were copied from the experimental data.
Today, Breeder Reactor work throughout the world is formulated on the basis of the negative Doppler coefficient. Since it appears that the Breeder reactor may be vital to world welfare in the next century, Paul's contributions in this area should not be forgotten.
Paul was selected for membership in the Sigma Xi and Tau Beta Pi honor societies. He was elected as a Fellow of the American Nuclear Society in 1970 and received the ANS Distinguished Service Award in 1980. He has served the ANS as a member of its Board of Directors (1970-3); Technical Program Chairman (1969); Chairman of Reactor Physics Division (1971-2); Chairman, ANS-19 Standards Subcommittee (1972-7); member Reactor Safety Div. Executive Comm. (1980-3).
Paul was on a number of National Advisory and Planning Committees; he was co-editor of Advances in Nuclear Science and Technology (1965-8); became a Professional Engineer in California in 1976, and was the author of over 100 technical papers on reactor physics, heat transfer and nuclear safety. He has been a major asset to the development of nuclear power.
Reactor Physics Division and Nuclear Installations Safety Division
A selection committee will be established by the Reactor Physics Division
Graduate (Masters or Ph.D.) - completed at least two years of graduate studies
1 awarded annually @ $5,000/each
February 1
Last modified July 2, 2024, 3:56pm CDT