Document: 10 CFR Part 52
Document ID: e52f4037-fcfe-4992-9214-b6b8e94b5927
Document Type: cfr
Title: Finality of manufacturing licenses; information requests.
Source: 10 CFR Part 52
Source URL: https://www.ecfr.gov/current/title-10/part-52/section-52.171
Revision Date: 
Chapter: 
Section ID: 52.171
CFR Part: 52
CFR Title: 10

Content:
§ 52.171 Finality of manufacturing licenses; information requests. ( a ) ( 1 ) Notwithstanding any provision in 10 CFR 50.109 , during the term of a manufacturing license the Commission may not modify, rescind, or impose new requirements on the design of the nuclear power reactor being manufactured, or the requirements for the manufacture of the nuclear power reactor, unless the Commission determines that a modification is necessary to bring the design of the reactor or its manufacture into compliance with the Commission's requirements applicable and in effect at the time the manufacturing license was issued, or to provide reasonable assurance of adequate protection to public health and safety or common defense and security. ( 2 ) Any modification to the design of a manufactured nuclear power reactor which is imposed by the Commission under paragraph (a)(1) of this section will be applied to all reactors manufactured under the license, including those that have already been transported and sited, except those reactors to which the modification has been rendered technically irrelevant by action taken under paragraph (b) of this section. ( 3 ) In making the findings required for issuance of a construction permit, operating license, combined license, in any hearing under § 52.103 , or in any enforcement hearing other than one initiated by the Commission under paragraph (a)(1) of this section, for which a nuclear power reactor manufactured under this subpart is referenced or used, the Commission shall treat as resolved those matters resolved in the proceeding on the application for issuance or renewal of the manufacturing license, including the adequacy of design of the manufactured reactor, the costs and benefits of severe accident mitigation design alternatives, and the bases for not incorporating severe accident mitigation design alternatives into the design of the reactor to be manufactured. ( b ) ( 1 ) The holder of a manufacturing license may not make changes to