Document: 10 CFR Part 52
Document ID: d1ebf719-25be-4bfe-95bd-ff11058f0d55
Document Type: cfr
Title: Duration of certification.
Source: 10 CFR Part 52
Source URL: https://www.ecfr.gov/current/title-10/part-52/section-52.55
Revision Date: 
Chapter: 
Section ID: 52.55
CFR Part: 52
CFR Title: 10

Content:
§ 52.55 Duration of certification. ( a ) Except as provided in paragraph (b) of this section, a standard design certification issued under this subpart is valid for 40 years from the date of issuance. ( b ) A standard design certification continues to be valid beyond the date of expiration in any proceeding on an application for a combined license or an operating license that references the standard design certification and is docketed either before the date of expiration of the certification, or, if a timely application for renewal of the certification has been filed, before the Commission has determined whether to renew the certification. A design certification also continues to be valid beyond the date of expiration in any hearing held under § 52.103 before operation begins under a combined license that references the design certification. ( c ) An applicant for a construction permit or a combined license may, at its own risk, reference in its application a design for which a design certification application has been docketed but not granted. [ 72 FR 49517 , Aug. 28, 2007, as amended at 90 FR 28873 , July 2, 2025]