The details: The revisions proposed by Westinghouse in this new submittal establish Vogtle-4 as the standard AP1000 reference plant for U.S. deployment. According to Westinghouse, this change will accelerate new AP1000 combined license applications, enable a rapid fleet deployment, and generally leverage the time and cost savings achieved in Westinghouse’s second successful U.S. deployment of the design.
Specifically, Westinghouse is aiming to revise the AP1000 DCD, which it defines as the set of documents that lays out “the technical details of a standard reactor design to ensure it meets all regulatory and safety requirements” and serves as “the primary reference for licensing new units.” A DCD, which numbers in the thousands of pages, chronicles each aspect of a plant’s design. Revisions to the DCD will incorporate lessons learned from the licensing, construction, and startup of Vogtle.
Along with these revisions, Westinghouse is also seeking to renew the AP1000 DC, which was first certified in 2006, revised in 2011, and extended (along with every other currently valid design certification) in 2025. It is currently valid through 2046. Westinghouse’s new application requests a 40-year renewal.
Quotable: “For our customers, the ability to deploy a standard plant based on an as-built and operating unit without the technology risk associated with a first of a kind, never-built design is a game changer for unlocking fleet-scale deployment,” said Dan Sumner, interim CEO of Westinghouse.
Key background: In their respective announcements of this submittal, both the NRC and Westinghouse emphasized how this move builds on each party’s previously established plans.
For Westinghouse, this move will enable its ambitions to have 10 new AP1000s under construction by 2030. This plan, which seeks to achieve nth-of-a-kind efficiencies for the reactor, was announced and endorsed by President Trump at last year’s inaugural Pennsylvania Energy and Innovation Summit.
For the NRC, this submittal slots into its “broader effort to streamline design certification updates and combined license application reviews for reactors referencing approved designs, enhancing regulatory predictability while maintaining the agency’s high safety standards,” per its announcement.
At the end of March, the NRC released a policy issue detailing its plans to spur near-term, gigawatt-scale LWR reactor deployment. There, the regulator said that it anticipated this now-submitted DCD to be coming soon. At the time, the NRC said the DCD revisions would likely incorporate “few, if any, new changes [to the AP1000 design] because the purpose of the amendment is to reflect the as-built condition of the Vogtle units.”
More broadly, in that policy issue, the NRC clearly indicated that, moving forward, its efforts in large-scale nuclear will be focused on new AP1000 deployments, whether that be through the revival of previously submitted combined license application or applications at wholly new sites.
