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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
Zongwei Wang, Qi Wang, Xuesen Zhao, Yong Hu, Dangzhong Gao, Jie Meng, Xing Tang, Xiaojun Ma
Fusion Science and Technology | Volume 75 | Number 4 | May 2019 | Pages 308-316
Technical Paper | doi.org/10.1080/15361055.2019.1565855
Articles are hosted by Taylor and Francis Online.
Noncontact radiography is developed to determine the doping concentration of inertial confinement fusion shells based on an improved equivalent absorption method by real-time X-ray imaging. Elements of high atomic number (high-Z)/middle atomic number (mid-Z) are doped into the shells to prevent hot electrons from preheating the fuel and to restrain the growth of hydromechanic instability. In this paper, an improved equivalent absorption model is developed to determine doping concentration by real-time X-ray imaging. Compared to contact radiography (CR) with film imaging, this technique can be used to obtain doping concentrations at different angles as a supplement to the CR method, even if the dynamic range of a charge-coupled device is less than film imaging. Experiments are carried out to determine the doping concentrations of Ge-doped and Si-doped shells. Uncertainties of the results are analyzed, and the expanded uncertainties are approximated to 0.1 at. % (K = 2, confidence factor). The experimental results show that there is a high level of agreement between this method and energy dispersive spectroscopy with the modified model.