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
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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!
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Nuclear Science and Engineering
February 2025
Nuclear Technology
January 2025
Fusion Science and Technology
Latest News
Marzano sworn in as NRC commissioner
Marzano
Matthew Marzano became the newest member of the Nuclear Regulatory Commission when he was officially sworn into office by chair Christopher Hanson this week.
The nuclear engineer and former reactor operator was confirmed last month in a 50–45 vote in the U.S. Senate. Last July, President Biden nominated Marzano to serve on the commission, which is tasked with formulating policies, developing regulations, issuing orders, and resolving legal matters.
Marzano’s term expires June 30, 2028.
Frank E. Motley, Richard P. Jenks
Nuclear Technology | Volume 87 | Number 1 | August 1989 | Pages 302-309
Technical Paper | TMI-2: Materials Behavior / Nuclear Safety | doi.org/10.13182/NT89-A27658
Articles are hosted by Taylor and Francis Online.
Work has been performed to develop a Three Mile Island Unit 2 (TMI-2) simulation model for MELPROG/TRAC capable of predicting the observed plant behavior that occurred during the accident of March 1979. A description of the TMI-2 plant model is presented, and calculation results through 174 min of the accident are discussed. Using the boundary conditions recommended for the TMI-2 Analysis Exercise, the calculation predicts pressurizer draining and core recovering prior to fuel rod damage. A parametric calculation (with reduced makeup flow) was also performed and is in better agreement with the observed plant behavior. Efforts are under way to proceed with an accurate simulation through phases 3 and 4 of the accident (174 to 227 min and 227 to 300 min, respectively).
