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Developing a new regulatory framework for advanced reactors: Update on Part 53
White
The American Nuclear Society’s Risk-informed, Performance-based Principles and Policy Committee (RP3C) on March 29 held another presentation in its monthly Community of Practice (CoP) series. The presenter, Patrick White with the Nuclear Innovation Alliance (NIA), talked about the current status of efforts to develop a new regulatory framework for advanced reactors—known as 10 CFR Part 53 or simply Part 53. White serves as the research director of the NIA, where he leads their research as well as analysis-based stakeholder and policymaker engagement and education. White’s March 29 presentation is publicly available on YouTube and at ANS’s publication platform Nuclear Science and Technology Open Research (NSTOR).
RP3C chair N. Prasad Kadambi opened the CoP with brief introductory remarks about the RP3C before he welcomed White as the session’s presenter.
White covered three main topics: the history of the existing regulatory frameworks for new reactors, progress to date on the development of the Part 53 rule for advanced reactors, and the current status and next steps for the Part 53 rulemaking process.
M. L. Mallikarjuna, S. B. Appaji Gowda, S. Krishnaveni, R. Gowda, T. K. Umesh
Nuclear Science and Engineering | Volume 140 | Number 1 | January 2002 | Pages 96-102
Technical Paper | doi.org/10.13182/NSE02-A2247
Articles are hosted by Taylor and Francis Online.
The total attenuation cross sections of the elements copper, zirconium, silver, and tin have been measured experimentally in a narrow beam good geometry set up by employing a high-resolution hyperpure germanium detector in the energy range 5 to 85 keV. The data have been used to derive the K-shell photoeffect cross sections at the K-edge, the oscillator strength gK, and the K-jump ratio of the elements copper, zirconium, silver, and tin. The photoeffect cross sections at the K-edge and the oscillator strengths of the element have been calculated by making use of a method that eliminates the requirement of subtracting the theoretical scattering contribution. The best-fit coefficients for the cross sections and the relations so obtained for the jump ratios and oscillator strengths facilitate a speedier E- and Z-wise interpolation of the data on total attenuation cross sections as well as JK and K-shell photo effect cross sections at the K-edge, respectively, in the range 5 to 85 keV, for elements in the atomic number range 25 to 55.