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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
November 2024
Nuclear Technology
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October 2024
Latest News
Bipartisan nuclear waste bill introduced in U.S. House
U.S. representatives Mike Levin (D., Calif.) and August Pfluger (R., Texas) have introduced the bipartisan Nuclear Waste Administration Act of 2024, which would establish an independent agency to manage the country’s nuclear waste.
In addition to establishing a new, single-purpose administration to manage the back end of the nuclear fuel cycle, the bill would direct a consent-based siting process for nuclear waste facilities and ensure reliable funding for managing nuclear waste by providing access to the Nuclear Waste Fund. According to Pfluger and Levin, the bill’s provisions are in line with recommendations from the Blue Ribbon Commission on America’s Nuclear Future.
Tunc Aldemir, Joseph W. Talnagi,*, Don W. Miller
Nuclear Technology | Volume 86 | Number 3 | September 1989 | Pages 248-263
Technical Paper | Fission Reactor | doi.org/10.13182/NT89-A34293
Articles are hosted by Taylor and Francis Online.
The 10-kW, highly enriched uranium (HEU) fueled Ohio State University Research Reactor (OSURR) is being upgraded to operate at 500 kW under natural convection core cooling with the recently licenced lowenriched uranium (LEU), high-density U3Si2fuel. The OSURR will be the first university reactor to use standardized U3Si2 plates for a full-core conversion from HEU to LEU fuel. The activities toward conversion/power upgrade objectives include (a) a neutronic performance assessment of 15 LEU cores with 16 plate standard and 10 plate control elements under expected operating conditions; (b) simulation of OSURR threedimensional pool dynamics under various pool configurations to limit the pool top 16N activity (PTNA) to operationally allowable levels; (c) determination of a new correlation to predict onset of nucleate boiling (ONB) in thin, rectangular channels under low-velocity, upward flow conditions; and (d) design of a pool heat removal system (PHRS). These activities have identified three possible LEU cores with a cold, clean shutdown margin in the range from 1.57 to 1.91% Δk/k that allow steady-state operation at 500 kW with a 50 to 60% margin to ONB. A system configuration that minimizes PTNA while maximizing the primary inlet temperature to PHRS to improve the heat exchanger efficiency has also been identified. The PHRS is designed to remove 500 kW through an ethylene-glycol heat exchanger and a dry cooler when the outside air temperature is <33°C. The PHRS also has an auxiliary heat exchanger to allow operation without power derating when the air temperature is >33°C.
