Document: NRC Regulatory Guide
Document ID: 50995365-d97f-4101-970a-378af6b5374b
Document Type: regulatory_guide
Title: Qualification of Fiber-Optic Cables, Connections, and Optical Fiber Splices for Use in Safety Systems for Production and Utilization Facilities (Rev. 0)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2505/ML25052A253.pdf
Revision Date: 2025-08
Chapter: 
Section ID: RG-1.257
CFR Part: 
CFR Title: 

Content:
families,” is informative; the endorsement of IEEE Std. 1682-2023 does not include endorsement of Annex A. RG 1.257, Rev. 0, Page 11 D. IMPLEMENTATION Licensees generally are not required to comply with the guidance in this RG. If the NRC proposes to use this RG in an action that would constitute backfitting, as that term is defined in 10 CFR 50.109, “Backfitting,” and as described in NRC Management Directive (MD) 8.4, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests” (Ref. 32); affect the issue finality of an approval issued under 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants”; or constitute forward fitting, as that term is defined in MD 8.4, then the NRC staff will apply the applicable policy in MD 8.4 to justify the action. If a licensee believes that the NRC is using this RG in a manner inconsistent with the discussion in this Implementation section, then the licensee may inform the NRC staff in accordance with MD 8.4. RG 1.257, Rev. 0, Page 12 REFERENCES1 These references indicate the versions of the documents available at the time of issuance of this RG. Licensees or applicants using this RG should check all referenced documents to verify that no change has occurred since the issuance of the RG. 1. Institute of Electrical and Electronics Engineers (IEEE) Standard (Std.) 1682-2023, “IEEE Standard for Qualifying Fiber Optic Cables, Connections, and Optical Fiber Splices for Use in Safety Systems in Nuclear Power Generating Stations,” Piscataway, New Jersey, December 15, 2023.2 2. U.S. Code of Federal Regulations (CFR), “Domestic Licensing of Production and Utilization Facilities,” Part 50, Chapter 1, Title 10, “Energy.” 3. CFR, “Licenses, Certifications, and Approvals for Nuclear Power Plants,” Part 52, Chapter 1, Title 10, “Energy.” 4. IEEE Std. 279-1968, “Proposed IEEE Criteria for Nuclear Power Plant Protection Systems,” Piscataway, New Jersey,