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Division Spotlight
Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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
Germany’s Unterweser completes removal of steam generators
All four steam generators at Germany’s Unterweser nuclear power plant have been removed from the reactor building, plant owner PreussenElektra has announced. The single-unit pressurized water reactor was shut down in 2011 as part of Germany’s decision to phase out nuclear energy. Decommissioning and dismantlement of the reactor began soon after PreussenElektra was granted a permit for the work in February 2018.
W. Delle, K. Koizlik, M. S. T. Price U.K., E. Wallura
Nuclear Technology | Volume 35 | Number 2 | September 1977 | Pages 284-292
Pyrocarbon | Coated Particle Fuel / Fuel | doi.org/10.13182/NT77-A31888
Articles are hosted by Taylor and Francis Online.
Today, pyrocarbon (PyC) is the most common material used for the coating of nuclear fuel particles for the fuel elements of the high-temperature gas-cooled reactor. During recent years, many procedures have been developed for this material that have yielded a broad spectrum of information and have thereby improved knowledge of PyC. The characterization methods that are suitable for out-line quality control include coating layer density determination by sink float techniques, coating layer thickness by x-ray projection or by contact microscopy, and orientation anisotropy. Many other techniques are available for laboratory use.