Standard Design Approval (SDA) Application – NuScale US460

cutaway diagram of a nuclear reactor identifying the various components: Steam line, Feedwater line, Containment, Reactor vessel, Support trunnion, Steam ggenerator, Nuclear core, and Module support skirt
Who:   NuScale Power, LLC
What:   Application for Standard Design Approval for an integrated pressurized water reactor assembly comprised of multiple NuScale Power Module™ (NPM) that can generate 77MWe per module Small Modular Reactors (SMR).
When:   Submittal of SDA Application – CY 4th Quarter 2022

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Project Overview

The staff of the U.S. Nuclear Regulatory Commission (NRC) is currently engaged in pre-application activities for NuScale US460 small modular reactor (SMR) standard design approval application. NuScale US460 can generate 77MWe per module (gross), resulting in about 924MWe for the flagship 12-module power plant, with options for smaller power plant solutions in four-module (about 308 MWe) and six-module (about 462 MWe) sizes. NuScale US460 is an integral pressurized-water reactor, designed by NuScale Power, LLC. The design is based on Multi-Application Small Light Water Reactor developed at Oregon State University in the early 2000s. NuScale US460 is a natural circulation light water reactor with the reactor core and helical coil steam generators located in a common reactor vessel in a cylindrical steel containment. The reactor vessel containment module is submerged in water in the reactor building safety related pool, which is also the ultimate heat sink for the reactor. The pool portion of the reactor building is located below grade.

For additional detail, see the following related pages:

Contacts for Standard Design Approval (SDA) Application – NuScale720
Lead Project Manager Getachew Tesfaye
Contact a Public Affairs Officer

Page Last Reviewed/Updated Thursday, September 15, 2022