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
Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
Mar 2025
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
March 2025
Nuclear Technology
Fusion Science and Technology
February 2025
Latest News
Prepare for the 2025 Nuclear PE Exam with ANS guides
The next opportunity to earn professional engineer (PE) licensure in nuclear engineering is this fall, and now is the time to sign up and begin studying with the help of materials like the online module program offered by the American Nuclear Society.
Gilbert Melese-d'Hospital
Nuclear Science and Engineering | Volume 33 | Number 3 | September 1968 | Pages 271-283
Technical Paper | doi.org/10.13182/NSE68-A19234
Articles are hosted by Taylor and Francis Online.
For given maximum surface and internal fuel temperatures and coolant inlet temperature, the optimum degree of artificial roughening of the surface of gas-cooled fast reactor fuel elements is such that the Stanton number is approximately doubled with respect to smooth rods. For given coolant temperatures and maximum clad temperature, the power per unit length of rod increases approximately linearly with increasing Stanton number. Core performance is not sensitive to possible uncertainties in friction factor (±25%), slight decrease in surface heat transfer, or to the fraction of the active rod which is roughened. By proper design, fuel cycle costs remain low (0.5 to 0.6 mil/kWh) for a substantial range of values of maximum clad temperature (600 to 700°C), maximum linear rating (12 to 18 kW/ft), and degree of surface roughening (1.5 to 2.5) with helium cooling of oxide rods.
