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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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!
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Latest News
Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
Chao Tian, Lifeng Sun, Chao Fang
Nuclear Science and Engineering | Volume 175 | Number 2 | October 2013 | Pages 204-211
Technical Paper | doi.org/10.13182/NSE12-51
Articles are hosted by Taylor and Francis Online.
In this paper, we discuss our study of the fission product diffusion process in TRISO fuel particles used in pebble bed high-temperature reactors (HTRs). Different from the previous numerical solution, the analytical solution of this diffusion process by variables separation was derived. It was also accessible to obtain the analytical expressions of the fission product concentration distribution C(t), the corresponding release fractions F(t), and the ratio of release and productive amounts R(t)/B(t) of fission products. Furthermore, to reduce the rounding errors, parameters mentioned in the diffusion equations were nondimensionalized, which made the result fairly reliable and credible. Since the analytical solutions are exact, many unnecessary assumptions and approximations in Booth's model are avoided. On the basis of HTR-10 design benchmark, the C(t), F(t), and R(t)/B(t) of 137Cs and 134Cs in TRISO fuel particles were calculated and then compared with the finite element solutions. The results show that analytical solutions are effective and consistent with the physical picture.