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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
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!
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Latest News
Report: New York state adding 1 GW of nuclear to fleet
New York Gov. Kathy Hochul has instructed the state’s public electric utility to add at least 1 gigawatt of new nuclear by building a large-scale nuclear plant or a collection of smaller modular reactors, according to the Wall Street Journal.
Andhika F. Wibisono (Univ of Cambridge), Jeong Ik Lee (KAIST), Eugene Shwageraus (Univ of Cambridge)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 1056-1065
Nuclear power plants (NPPs) are known to be used as providers of base-load power. As the share of the intermittent renewables in the energy mix increases, the maneuvering (load-following) of NPPs is becoming more important. Previous studies have found that combining Light Water Reactors (LWRs) with external superheater would improve their cycle thermal efficiencies and maneuvering capabilities. Implementation of this concept in a small modular boiling water reactor (SMBWR) might offer additional benefits, such as vessel size reduction and further boost of cycle thermal efficiency at higher operating pressure. This paper presents a preliminary design of hybrid SMBWR, focusing on the effect of system pressure on reactor capability to operate with natural recirculation of coolant and on steam cycle thermodynamic performance. It is demonstrated that hybrid SMBWR has natural circulation system operating at higher pressure than the conventional system by increasing its chimney height. The study of the effect of system pressure on power cycle thermodynamic performance was done by considering both fossil fuel heat and renewable heat as the potential heat source for the external superheater. The cycle thermal efficiency of hybrid SMBWR with fossil heat option varies between 40 to 42% depending on the system operating pressure while the values for renewable heat option are between 38 to 40%.