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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.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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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Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
Otasowie Osifo, Staffan Jacobsson Svärd, Ane Håkansson, Christofer Willman, Anders Bäcklin, Tobias Lundqvist
Nuclear Science and Engineering | Volume 160 | Number 1 | September 2008 | Pages 129-143
Technical Note | doi.org/10.13182/NSE160-129TN
Articles are hosted by Taylor and Francis Online.
Decay heat is an important design parameter at the future Swedish spent nuclear fuel repository. It will be calculated for each fuel assembly using dedicated depletion codes, based on the operator-declared irradiation history. However, experimental verification of the calculated decay heat is also anticipated. Such verification may be obtained by gamma scanning using the established correlation between the decay heat and the emitted gamma-ray intensity from 137Cs. In this procedure, the correctness of the operator-declared fuel parameters can be verified.Recent achievements of the gamma-scanning technique include the development of a dedicated spectroscopic data-acquisition system and the use of an advanced calorimeter for calibration. Using this system, the operator-declared burnup and cooling time of 31 pressurized water reactor fuel assemblies was verified experimentally to within 2.2% (1) and 1.9% (1), respectively. The measured decay heat agreed with calorimetric data within 2.3% (1), whereby the calculated decay heat was verified within 2.3% (1). The measuring time per fuel assembly was ~15 min.In case reliable operator-declared data are not available, the gamma-scanning technique also provides a means to independently measure the decay heat. The results obtained in this procedure agreed with calorimetric data within 2.7% (1).