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.
Explore membership for yourself or for your organization.
Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
August 2025
Fusion Science and Technology
Latest News
Geoffrey Rothwell: My story—ANS member since 1986
When I was 10, in October 1963, my family moved to Richland, Wash., so that my father could work for Vitro-Hanford Engineering Services, later for Bechtel, on the design of the Fast Flux Test Facility. I was a “new” kid throughout my excellent education in the Richland School District. It was the mid-1960s, and I wanted to be a rocket scientist or aerospace engineer. I took all the math and science that Richland High School (RHS) had to offer. What struck me during our tour of Hanford’s N-reactor with my physics class was the loudness of the steam turbine room compared to the hydro turbine rooms in the dams along the Columbia River. I am now establishing a residence on Columbia Point Drive in Richland.
Nuclear Plant Instrumentation and Control & Human-Machine Interface Technology (NPIC&HMIT 2025)
Matt Dennis is a Senior Data Scientist in the Office of Nuclear Regulatory Research at the U.S. Nuclear Regulatory Commission (NRC) and currently leads the agency’s efforts in developing and implementing the NRC Artificial Intelligence Strategic Plan. Additionally, Matt supports the development and maintenance of the MACCS consequence analysis suite of codes and conducts severe accident consequence analyses. Prior to joining the NRC, Matt held positions at Northrop Grumman and Sandia National Laboratories. As a Senior Reliability Engineer with the Reliability Analysis Laboratory at Northrop Grumman’s Mission Systems Baltimore, he supported sustainment efforts for Global Hawk, Triton and Phoenix unmanned aircraft systems, as well as the Multi-role Electronically Scanned Array (MESA) program for airborne early warning and control. As a Senior Member of the Technical Staff in the Risk and Reliability Analysis department at Sandia National Laboratories, Matt led research and development projects supporting risk assessment and consequence analysis for new and operating nuclear reactors, as well as nuclear waste transportation. He has a B.S. and M.S. in Nuclear Engineering from the Missouri University of Science and Technology.
Last modified May 27, 2025, 7:49am CDT