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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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Nuclear Science and Engineering
September 2025
Nuclear Technology
August 2025
Fusion Science and Technology
Latest News
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.
Jianghua Wei, Songbo Han
Fusion Science and Technology | Volume 80 | Number 5 | July 2024 | Pages 695-701
Research Article | doi.org/10.1080/15361055.2023.2228566
Articles are hosted by Taylor and Francis Online.
Proton therapy in cancer treatment is an important application in nuclear science. As a key component of proton therapy, the patient positioning system (PPS) based on a robotic arm is used in cancer treatment. The PPS delivers the patient to the target position remotely for treatment with high accuracy. As a high safety and stability device in proton therapy, seismic load is one of the relevant accidental events that will affect the structural integrity of the PPS. In this study, a finite element model was built to investigate resistance of the PPS structure against seismic load. Two kinds of analysis methods (equivalent static analysis and response spectrum analysis) were carried out to calculate the displacement and stress fields to check the response of the PPS against the defined seismic load. The results indicated that all the stresses are lower than the permissible limits and the safety requirement.
