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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.
Shoichi Okamura, Noriyoshi Nakajima, Hiroshi Yamada, Keisuke Matsuoka, Kiyohiko Nishimura, Akira Ando, Akira Ejiri, Katsumi Ida, Harukazu Iguchi, Takashi Minami, Shigeru Morita, Kazumichi Narihara, Jihua Xu, Ichihiro Yamada, Satoru Sakakibara
Fusion Science and Technology | Volume 27 | Number 3 | April 1995 | Pages 178-181
Helical Systems | doi.org/10.13182/FST95-A11947063
Articles are hosted by Taylor and Francis Online.
In the vacuum magnetic field configuration of CHS, the MHD stability depends on the position of magnetic axis (Rax). When Rax > 95 cm, the magnetic well in the central region and the strong magnetic shear in the boundary region give the MHD stability for the ideal interchange. For the inward shifted configuration, the Mercier unstable region comes out. The volume-averaged equilibrium beta 2.1 % was obtained in 1993 with Rax = 92 cm configuration. The self-stabilization effect of high-beta plasma gave Mercier stable equilibrium while the Rax = 92 cm configuration has the Mercier unstable region for low-beta plasmas. The measurements of magnetic fluctuations and the soft X-ray signals did not show strong instabilities in these discharges. In order to evaluate the stability boundary for ideal interchange instabilities, the efforts of producing high-beta plasmas have been made for more inward shifted magnetic axis configurations (89 cm < Rax < 92 cm). The strong MHD activities were observed for those discharges.