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
August 2025
Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
M. Salvatores, I. Slessarev, M. Uematsu
Nuclear Science and Engineering | Volume 120 | Number 1 | May 1995 | Pages 18-39
Technical Paper | doi.org/10.13182/NSE95-A24103
Articles are hosted by Taylor and Francis Online.
This paper considers ways to approach radiologically clean nuclear power (RCNP), i.e., an energy production technology based on a natural nuclear fuel transmutation with a simultaneous fission product transformation into stable or short-lived nuclei. Ways to limit the long-term radiotoxicity accumulation in the fuel cycle, both related to actinides and to long-lived fission products, and to limit the radiological risk related to the in-core nuclear fuel inventory are defined. Criteria and guidelines are defined in that perspective, and they are applied to the evaluation of different options such as open or closed fuel cycles, burnup extension, type of neutron spectrum, use of thorium or uranium fuel cycle, and subcriticality in the multiplying region. Meanwhile, understanding the physics implications of the requirements for an RCNP reveals that there are promising ways to improve current systems. Ideal systems, which are defined to exploit all the desirable physics features to make them better in terms of environmental impact, show potential advantages, but they are never so spectacular—and certainly are to be taken extremely carefully—in view of the need of complementary technological feasibility and cost and safety analyses, Moreover, the problem of radiation doses, which is essential for fuel cycle management and could appreciably influence the choice of the appropriate fuel cycle, have not yet been taken into account. This last aspect and more specific safety analyses, together with cost-benefit evaluations, will be the subject of future investigations.