# Federal Register 2026-21030 — effective 2026-12-28 — AP1000 Design Certification Renewal — Nuclear Regulatory Commission

For Federal Register 2026-21030, effective date is 2026-12-28; agency is Nuclear Regulatory Commission; published is 2026-10-14; cfr parts amended is 10 CFR 52, recorded from its source on 2026-10-19; source re-checked 2026-11-06.

- **FR document number:** 2026-21030 _(verified: appears in the quote below)_
- **Rule:** AP1000 Design Certification Renewal _(verified: appears in the quote below)_
- **Agency:** Nuclear Regulatory Commission _(verified: appears in the quote below)_
- **Effective date:** 2026-12-28 _(verified: appears in the quote below)_
- **DATES, as printed:** The final rule is effective December 28, 2026, unless significant adverse comments are received by November 13, 2026. If the direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register. (For more on NRC's consideration of comments received, see SUPPLEMENTARY INFORMATION.) _(verified: appears in the quote below)_
- **CFR parts amended:** 10 CFR 52 _(our reading, not quoted from the source)_
- **Published:** 2026-10-14 _(verified: appears in the quote below)_

## What the source says

> {"document_number":"2026-21030","title":"AP1000 Design Certification Renewal","agency_names":["Nuclear Regulatory Commission"],"effective_on":"2026-12-28","dates":"The final rule is effective December 28, 2026, unless significant adverse comments are received by November 13, 2026. If the direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register. (For more on NRC's consideration of comments received, see SUPPLEMENTARY INFORMATION.)","cfr_references":[{"chapter":null,"citation_url":null,"part":"52","title":10}],"publication_date":"2026-10-14","html_url":"https://www.federalregister.gov/documents/2026/10/14/2026-21030/ap1000-design-certification-renewal"}

## Source

- https://www.federalregister.gov/api/v1/documents.json?per_page=1000&order=oldest&conditions%5Btype%5D%5B%5D=RULE&conditions%5Beffective_date%5D%5Bgte%5D=2026-08-31&conditions%5Beffective_date%5D%5Blte%5D=2026-12-31&fields%5B%5D=document_number&fields%5B%5D=title&fields%5B%5D=agency_names&fields%5B%5D=effective_on&fields%5B%5D=dates&fields%5B%5D=cfr_references&fields%5B%5D=publication_date&fields%5B%5D=html_url

Last verified: 2026-11-06. Review by: 2026-11-16.
Part of [Federal rules taking effect: every US final rule in the Federal Register, by effective date](https://referencesource.org/federal-rules-taking-effect/).