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Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
Meeting Spotlight
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.
Liu Xiaobo, Fan Xiaoqiang, Peng Xianjue, Du Jinfeng, Gao Hui
Nuclear Science and Engineering | Volume 179 | Number 2 | February 2015 | Pages 119-129
Technical Paper | doi.org/10.13182/NSE13-30
Articles are hosted by Taylor and Francis Online.
A novel experimental method is introduced for effectively validating neutron initiation probability, through which the delayed neutron influence on the source strength can be neglected—this is the main reason for substantially explaining the burst waiting time experiments performed in the Godiva and Caliban burst reactors. The key idea of the new method is that the burst is initiated by simultaneously injecting a pulse of neutrons with appropriate strength just as the reactor achieves prompt supercritical and tallied by judging whether or not the burst is initiated by the pulsed neutrons based on the measured data. The principle of the method is described using initiation theory. The Chinese Fast Burst Reactor–II (CFBR-II) structure and two sets of configurations for preliminary experiments are then described. Last, those two sets of preliminary experiments are carried out on CFBR-II in the state of 0.042 $ prompt supercritical, and results, including the typical picture and other important measured data, are provided in order to illustrate how the initiation probability can be validated. The initiation probability of 0.43 was determined by preliminary performing of 65 bursts, which is an ∼35% relative difference between the theoretic calculations and the experimental results. Some discussion and suggestions for possible follow-on work are provided.