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
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Four million nuclear jobs by 2050: Who will do them?
Industry leaders from around the globe met this month to discuss the talent development that will be necessary for the long-term success of the nuclear industry.
The International Conference on Nuclear Knowledge Management and Human Resources Development, hosted by the International Atomic Energy Agency, was held in Vienna earlier this month. Discussed there was the agency’s forecast for nuclear capacity to more than double—or hopefully triple—by 2050 and the requirement of more than four million professionals to support the industry.
Cliff B. Davis
Nuclear Technology | Volume 90 | Number 3 | June 1990 | Pages 286-293
Technical Paper | RELAP/MOD2 / Nuclear Safety | doi.org/10.13182/NT90-A34394
Articles are hosted by Taylor and Francis Online.
The possibility of a flow instability in a fuel assembly during a hypothetical loss-of-coolant accident (LOCA) in the production reactors at the Savannah River Site (SRS) is currently the subject of many analyses. The Bingham pumps, which circulate flow through the Savannah River reactors, may be susceptible to cavitation because of the decrease in pressure that accompanies a LOCA. Cavitation in the Bingham pumps during a LOCA could reduce the forced flow through the assemblies and thus could promote flow instability. An analysis was performed at the Idaho National Engineering Laboratory to aid in the evaluation of the potential significance of cavitation on flow instability. The RELAP5 computer code and a model of the L-Reactor at the SRS were the primary analysis tools. A cavitation model was developed using correlations generated at Savannah River and the RELAP5 control system. Benchmark comparisons were performed between the RELAP5 cavitation model and cavitation tests performed in L-Reactor. Best-estimate calculations of a LOCA initiated by a double-ended guillotine break in the inlet piping to the reactor were then performed for a range of core powers. The LOCA calculations were used to determine the initial core power leading to the onset of cavitation and the effects of cavitation on system response. Cavitation was calculated to occur in the broken loop when the initial core power was >1400 MW. Cavitation did not cause a catastrophic reduction in core flow. The effects of cavitation were self-limiting because of feedback among the pump head, loop flow, and the available and required net positive suction head.