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Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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!
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Nuclear Science and Engineering
May 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Zap Energy hits 37-million-degree electron temperatures in compact fusion device
Zap Energy announced April 23 that it has reached 1-3 keV plasma electron temperatures—roughly the equivalent of 11 to 37 million degrees Celsius—using its sheared-flow-stabilized Z-pinch approach to fusion. Reaching temperatures above that of the sun’s core (which is 10 million degrees Celsius temperature) is just one hurdle required before any fusion confinement concept can realistically pursue net gain and fusion energy.
Brian Terranova, Andrew Whittaker, Len Schwer
Nuclear Technology | Volume 204 | Number 2 | November 2018 | Pages 119-130
Critical Review | doi.org/10.1080/00295450.2018.1472506
Articles are hosted by Taylor and Francis Online.
The U.S. Nuclear Regulatory Commission’s (NRC’s) NUREG-0800, “Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition—Design of Structures, Components, Equipment, and Systems,” and the U.S. Department of Energy’s (DOE’s) DOE-STD-1020-2016, “Natural Phenomena Hazards Analysis and Design Criteria for DOE Facilities,” provide guidance for the design of exterior reinforced concrete roof and wall panels against wind-borne missile impact. These documents point to Regulatory Guide (RG) 1.76, “Design-Basis Tornado and Tornado Missiles for Nuclear Power Plants”; RG 1.221, “Design-Basis Hurricane and Hurricane Missiles for Nuclear Power Plants”; and ANSI/ANS-2.3-2011(R2016), “Estimating Tornado, Hurricane, and Extreme Straight Line Wind Characteristics at Nuclear Facility Sites,” for the definition of missiles and impact velocities. Empirical formulas are used to calculate local responses of reinforced concrete walls and slabs impacted by missiles, where these formulas were calibrated using test data that are no longer available for reinterpretation. This critical review analyzes the accuracy of these empirical formulas using data collected from impact tests conducted by the Electric Power Research Institute and Calspan Corporation in the 1970s. Schedule 40 pipes are used as the impacting missile for this review because it is referenced in both NRC and DOE guidance. Outer and effective diameters of the pipe are used to compare empirical predictions and experimental results. None of the empirical relationships predict the local response of reinforced concrete walls and slabs impacted by tornado- and hurricane-borne missiles with the level of accuracy expected for analysis of a nuclear power plant. More accurate design equations are needed, which could be developed by impact analysis of reinforced concrete panels using numerical models that have been rigorously validated using test data. New experiments will be needed to enable validation of numerical models.