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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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!
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Nuclear Science and Engineering
March 2025
Nuclear Technology
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February 2025
Latest News
Investment bill would provide funding options for energy projects
Coons
Moran
The bipartisan Financing Our Futures Act, which expands certain financing tools to all types of energy resources and infrastructure projects, was reintroduced to the U.S. Senate on February 20 by Sens. Jerry Moran (R., Kan.) and Chris Coons (D., Del.).
Via amendment to the Internal Revenue Code, the legislation would allow advanced nuclear energy projects to form as master limited partnerships (MLPs), a tax structure currently available only to traditional energy projects.
An MLP is a business structure that is taxed as a partnership but the ownership interests of which are traded like corporate stock on a market. Until the Internal Revenue Code is amended, MLPs will continue to be available only to investors in energy portfolios for oil, natural gas, coal extraction, and pipeline projects that derive at least 90 percent of their income from these sources. This change would take effect on January 1, 2026.
K. Subba Rao, M. Srinivasan
Nuclear Technology | Volume 49 | Number 2 | July 1980 | Pages 315-320
Technical Note | Reactor | doi.org/10.13182/NT80-A32493
Articles are hosted by Taylor and Francis Online.
BeH2 could serve as an effective moderator in reducing critical masses in minimum critical mass systems on account of its (n,2n) reactivity bonus and the possibly higher hydrogen atomic density. A parametric study of the variation of keff and critical mass with BeH2 moderator density in the range of 600 to 1000 kg/m3 for the three main fissile nuclides of 235U, 233U, and 239Pu in small spherical thermal assemblies indicates that for 0.40-m-thick BeO-reflected spherical systems with BeH2 moderator of density ≥680 kg/m3 the critical masses are lower than with any other known moderator (such as H2O or CH2). With a moderator of crystalline BeH2 having a density of 780 kg/m3, critical masses are found to be lower than with CH2 by about 15%.
