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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
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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
NRC v. Texas: Supreme Court weighs challenge to NRC authority in spent fuel storage case
The State of Texas has not one but two ongoing federal court challenges to the Nuclear Regulatory Commission that could, if successful, turn decades of NRC regulations, precedent, and case law on its head.
T. B. Burley, M. D. Freshley
Nuclear Technology | Volume 9 | Number 2 | August 1970 | Pages 233-241
Fuel | Symposium on Theoretical Models for Predicting In-Reactor Performance of Fuel and Cladding Material | doi.org/10.13182/NT70-A28812
Articles are hosted by Taylor and Francis Online.
Plenum gas temperature and internal gas pressure buildup were measured during irradiation in four vibrationally compacted UO2-2 wt% PuO2 fuel rods. Two each of the four instrumented fuel rods operated to peak burnups of 9900 and 6000 MWd/ MTM, respectively. Experimental results indicate that sorbed gases and moisture released from the fuel react rapidly with the Zircaloy cladding and do not contribute to the internal pressure. The predominant modes of fission gas release from high and lower power fuel rods is different. The rates of pressure buildup in the high and low burnup fuel rods, which correspond to about 34 and 12% fission gas release, respectively, were consistent with fuel temperature-dependent fission gas release fractions predicted from postirradiation gas collection data obtained from similar fuel rods. Measured plenum gas temperatures during irradiation varied directly with coolant outlet temperature.
