NuScale US460 Standard Design Approval Application Review
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Who: |
NuScale Power, LLC (NuScale)
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What: |
Application for a Standard Design Approval for a small modular reactor (US460)
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When: |
By letter dated December 31, 2022 (electronically submitted on January 1, 2023), NuScale completed its staged SDA application submittal.
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Website: |
https://www.nuscalepower.com |
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On this page:
Project Overview
The staff of the U.S. Nuclear Regulatory Commission (NRC) is currently engaged in review activities of NuScale’s US460 Standard Design Approval (SDA) for a light water technology small modular reactor. (DOCKET NOs. 05200050 and 99902078)
Plant Characteristic |
Description |
Reactor Type |
Light water small modular reactor |
Power per module |
77 MWe per nuclear power module (NPM) |
Number of NPMs |
6 |
US460 SDA Total Power |
462 MWe |
For additional detail, see the following related page:

Project Status
The NuScale US 460 SDA application (SDAA) review status is displayed in the dashboard below. It allows the user to use various filters and visualizations in the Microsoft® Power BI® software platform to investigate the overall trends regarding:
- Phase Review Progress
- NuScale SDA Application Review Timeline
- Status of Requests for Additional Information (RAIs)
- Status of High Impact Technical Issues (HITIs)
As the review progresses, the dashboard will be updated to reflect new information.

Project Details
The SDAA review phases:
Phase |
Phase Name |
End date |
Phase A |
Advanced Safety Evaluation Report (ASER) without open items (draft completion date; internal NRC schedule) |
November 2024 |
Phase B |
ASER review (technical editing), Management concurrence |
February 2025* |
Phase C |
Advisory Committee on Reactor Safeguards (ACRS) Review of ASER |
May 2025 |
Phase D |
Final Safety Evaluation Report (FSER) and Standard Design Approval (SDA) |
May 2025 ** |
*Phase B was completed on schedule with few open items that were addressed during Phase C.
**Standard Design Approval (SDA) was issued two months ahead of public milestone.

Contacts for the NuScale US460 SDA application review |
Lead Project Manager |
Getachew Tesfaye
301-415-8013 |
Public Affairs Officer |
Scott Burnell
301-415-8204 |
