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
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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!
Latest Magazine Issues
May 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
June 2024
Nuclear Technology
Fusion Science and Technology
Latest News
NRC approves transfer of Vallecitos to North Star for D&D
By an order dated April 25, the Nuclear Regulatory Commission has approved the transfer of ownership of Vallecitos Nuclear Center from GE Hitachi Nuclear Energy to NorthStar Group Services for nuclear decontamination, decommissioning, and environmental site restoration.
Christopher B. Azmeh, Kyle L. Walton, Tushar K. Ghosh, Sudarshan K. Loyalka, Dabir S. Viswanath, Robert V. Tompson
Nuclear Technology | Volume 195 | Number 1 | July 2016 | Pages 87-97
Technical Paper | doi.org/10.13182/NT15-54
Articles are hosted by Taylor and Francis Online.
For very-high-temperature reactors (VHTRs), the ability of structural components, specifically the reactor pressure vessel, to dissipate heat by radiation is an important design criterion. Thus, in selecting components for VHTR applications, it is necessary to measure the emissivity of all structural materials being considered. With the standard ASTM C835-06 test method, the total hemispherical emissivity of A387 Grade 91 steel, a leading candidate alloy for VHTR structural applications, was measured under four distinct surface conditions: (1) mild abrasion following electrical discharge machining, (2) increased surface roughness via sandblasting, (3) coating with NBG-18 graphite powder, and (4) oxidization in air. A detailed account of experimental methods and procedures, as well as the results of the total hemispherical emissivity measurements, are presented.