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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.
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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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Latest News
NRC engineers share their expertise at the University of Puerto Rico
Robert Roche-Rivera and Marcos Rolón-Acevedo are licensed professional engineers who work at the U.S. Nuclear Regulatory Commission. They are also alumni of the University of Puerto Rico–Mayagüez (UPRM) and have been sharing their knowledge and experience with students at their alma mater since last year, serving as adjunct professors in the university’s Department of Mechanical Engineering. During the 2023–2024 school year, they each taught two courses: Fundamentals of Nuclear Science and Engineering, and Nuclear Power Plant Engineering.
Selcen Uzun Duran, Pelin Uslu Kiçeci, Bilge Demirköz
Nuclear Technology | Volume 208 | Number 2 | February 2022 | Pages 364-370
Technical Paper | doi.org/10.1080/00295450.2021.1888617
Articles are hosted by Taylor and Francis Online.
The Middle East Technical University Defocusing Beamline (METU-DBL) is being constructed in order to perform single event effects tests for the electronic components in accordance with the European Space Agency (ESA) European Space Components Coordination (ESCC) No. 25100 standard. The aim of this beamline is to provide a suitable test area at the end of the beamline using the beam elements, such as collimators and magnets. Shielding is a crucial precaution for the safety of the radiation workers and the protection of the electronic components from the detrimental effects of radiation. In the METU-DBL, shielding studies have started with the first protective collimator because the proton beam hits the collimator, resulting in secondary particle production that increases the dose level in the research and development (R&D) room. The shielding studies of the first protective collimator used in the pretest setup of the METU-DBL are presented in this study. The whole beamline was defined in the FLUKA simulation program to calculate the absorbed radiation dose and make shielding designs. Various shielding designs were studied in FLUKA and the 15th one was selected as a suitable shielding design for the first protective collimator. This shield was manufactured and mounted on the first protective collimator and used in 20 irradiations during the pretests. At the end of 20 irradiations, it was observed that the shield is effective at decreasing the dose level in the R&D room.