Each month on the last Friday from 3:00 p.m. to 4:00 p.m. (ET), the American Nuclear Society’s Risk-informed, Performance-based Principles and Policy Committee (RP3C) holds a Community of Practice (CoP), which is open to all. On February 23, N. Prasad Kadambi, director of his eponymous engineering consultancy firm, presented “Technology-Inclusive Implications of ANSI/ANS-30.3-2022, Light Water Reactor Risk-Informed, Performance-Based Design.”

By all accounts, 2022 brought many successes for the American Nuclear Society’s Standards Committee, including the initiation of five projects, reaffirmation of 11 current standards, and publication of seven new or revised standards. The entire collection of ANS current standards has been approved or reaffirmed (reapproved without change) by the American National Standards Institute (ANSI) within the past five years, keeping ANS in 100 percent compliance with ANSI’s requirement on maintaining current American National Standards. Also, the ANS standards program was reaccredited by ANSI on August 19, 2022, with the approval of a revised set of rules and procedures. ANS’s new rules and procedures take advantage of the opportunity to develop standards-related technical reports that may be registered with ANSI.

As the largest ultra-low-carbon electricity source in the United States, nuclear energy is a vital pillar of the effort to mitigate climate change. Deployment of advanced nuclear reactor and fuel technologies has been identified as a unique challenge in the production of new nuclear power plants to help maintain and grow our nuclear generating capacity. The licensing of novel nuclear reactor technologies also continues to be a facet of the broader challenge of advanced reactor deployment. When it comes to non–light water reactors and Generation III+ light water reactors, such as the AP-1000 or EPR, deployment is “2X over budget and behind schedule.”¹ However, in the case of recent large Generation III+ light water reactors, licensing has not been the rate-limiting step in the reactor deployment timeline, nor has it had a first-order impact on cost. With that said, several significant advances have been made in the expedition of licensing. This article focuses on three areas where progress has been made since this grand challenge was formulated in 2017, with highlights of some examples where the American Nuclear Society has guided or supported this progress.

Caroline Cochran, chief operating officer of Oklo Inc., and Sarah Bristol, PRA supervisor at NuScale Power, have given presentations recently for the American Nuclear Society’s Risk-informed, Performance-based Principles and Policy Committee (RP3C) Community of Practice (CoP).