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.
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Utility Working Conference and Vendor Technology Expo (UWC 2022)
August 7–10, 2022
Marco Island, FL|JW Marriott Marco Island
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
Latest Journal Issues
Nuclear Science and Engineering
Fusion Science and Technology
How is EPRI supporting plant life extensions?
Many nuclear plants have operating licenses that extend beyond their original term of 40 years to 60 years, and many are expected to operate to 80 years or even beyond. The Electric Power Research Institute helped formulate the technical basis for up to 80 years of nuclear power plant operation. Based on this experience, EPRI has developed a systematic approach to maintaining the technical basis for long-term operation.
If the nucleus of a heavy atom–such as uranium–absorbs a neutron, the nucleus can become unstable and split. This is called nuclear fission. Fission releases energy in the form of heat. Although fission can occur naturally, fission as encountered in the modern world is usually a deliberate man-made nuclear reaction.
Typical fission events release about two hundred million eV (200 MeV) of energy. In contrast, most chemical oxidation reactions (such as burning coal) release at most a few eV per event. So, nuclear fuel contains at least ten million times more usable energy per unit mass than does chemical fuel.
Fusion is the opposite reaction of fission. In fusion, atoms are fused together.For a fusion reaction to occur, it is necessary to bring two nuclei so close that nuclear forces become active and glue the nuclei together. Deuterium and Tritium, isotopes of hydrogen, are used in fusion reactors. Nuclear forces are small-distance forces and have to act against the electrostatic forces where positively charged nuclei repel each other. This is the reason nuclear fusion reactions occur mostly in high density, high temperature environment.
Recreating that environment is the greatest challenge to producing commercial scale fusion energy, but it’s a challenge well worth pursuing. Nuclear fusion can produce four times the amount of energy as nuclear fission.
Last modified April 14, 2020, 11:29pm CDT