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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
June 2025
Nuclear Technology
Fusion Science and Technology
May 2025
Latest News
Industry Update—May 2025
Here is a recap of industry happenings from the recent past:
TerraPower’s Natrium reactor advances on several fronts
TerraPower has continued making aggressive progress in several areas for its under-construction Natrium Reactor Demonstration Project since the beginning of the year. Natrium is an advanced 345-MWe reactor that has liquid sodium as a coolant, improved fuel utilization, enhanced safety features, and an integrated energy storage system, allowing for a brief power output boost to 500-MWe if needed for grid resiliency. The company broke ground for its first Natrium plant in 2024 near a retiring coal plant in Kemmerer, Wyo.
Truong V. Vo, Michael S. Harris, Bryan F. Gore
Nuclear Technology | Volume 84 | Number 1 | January 1989 | Pages 14-22
Technical Paper | Fission Reactor | doi.org/10.13182/NT89-A34192
Articles are hosted by Taylor and Francis Online.
Probabilistic risk assessment (PRA) based inspection guidance has been developed using information from the PRA for Arkansas Nuclear One Unit 1 (ANO-1). This information will be used in conjunction with the U.S. Nuclear Regulatory Commission (NRC) Inspection and Enforcement Manual and has been prepared in the form of a plant-specific appendix for incorporation into this manual. An analytical method was developed for calculating risk importance for affected plant systems. This was used to prioritize the ANO-1 plant systems using the Fussel- Vesely importance measure on the basis of core melt probability. System fault trees were reanalyzed to identify and rank the risk significant components in each system. The product of this effort is a prioritized listing of systems and components associated with 98% of the inspectable portion of the risk from ANO-1. This compilation will subsequently be used by NRC inspectors in the preparation of inspection plans addressing risk-important systems and components at the ANO-1 power plant.
