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
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
December 2025
Nuclear Technology
Fusion Science and Technology
November 2025
Latest News
Modernizing I&C for operations and maintenance, one phase at a time
The two reactors at Dominion Energy’s Surry plant are among the oldest in the U.S. nuclear fleet. Yet when the plant celebrated its 50th anniversary in 2023, staff could raise a toast to the future. Surry was one of the first plants to file a subsequent license renewal (SLR) application, and in May 2021, it became official: the plant was licensed to operate for a full 80 years, extending its reactors’ lifespans into 2052 and 2053.
T. A. Gabriel
Nuclear Technology | Volume 9 | Number 4 | October 1970 | Pages 605-614
Analysis | doi.org/10.13182/NT70-A28770
Articles are hosted by Taylor and Francis Online.
Calculations have been carried out to obtain the time and spatial dependence of the long-lived induced activity in soil produced by 200-MeV protons incident on a small cylinder of graphite buried in soil. Only radioactive nuclei with halflives greater than or equal to that of 7Be (0.147 year) were considered. Monte Carlo methods were applied to determine the induced neutron flux which was combined with both calculated and experimental radiochemical cross sections to determine the rate of residual-nuclei production. Through the use of the results of the calculations, a procedure has been established whereby the approximate contribution of each target nucleus to the production of a particular radioactive nucleus can be obtained. The results of the calculations are also used to approximate the long-lived induced activity in soil when the small cylinder of graphite is embedded first in another material, such as iron, which is in turn surrounded by soil.
