other · Nuclear Regulatory Commission · Published 2025-08-26 · Effective 2025-09-15 · 90 FR 41503
Document
Document number
2025-16286
Federal Register citation
90 FR 41503
CFR reference
10 CFR 52
Type
Rule
Action
Direct final rule; confirmation of effective date.
Category
other
Sub-agency
Nuclear Regulatory Commission
Publication date
2025-08-26
Effective date
2025-09-15
Energy docket
NRC-2025-0018
Abstract
The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of September 15, 2025, for the direct final rule published in the Federal Register on July 2, 2025. This direct final rule amended the NRC's regulations to revise the duration of design certifications (DCs). This action replaced the 15-year duration for DCs with a 40-year duration period, both for existing DCs currently in effect and generically for future DCs. This direct final rule did not change the date of issuance for existing DCs (i.e., the start date by which an existing DC may be referenced remains unchanged). This direct final rule also incorporated a minor editorial correction.