Document: NRC Regulatory Guide
Document ID: 65325e1a-3033-4f91-a5fa-fcd1286b72ec
Document Type: regulatory_guide
Title: Dedication of Commercial-Grade Digital I&C Items for Use in Nuclear power Plants
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2200/ML22003A180.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.250
CFR Part: 
CFR Title: 

Content:
ational Accreditation Forum Multilateral Recognition Arrangement. The NRC staff has not reviewed and is not endorsing the use of SIL certification by certifying bodies that have not been accredited in conformance with IEC 61508. Therefore, DG-1402, Page 9 dedicating entities should verify the certifying body’s accreditation consistent with the guidance in section 6.3 of NEI 17-06. b. The NRC staff recognize that manufacturers and certifying bodies may use later editions of IEC 61508, and that NEI 17-06 does not appear to limit itself to the use of Edition 2.0, but the NRC staff can only endorse editions of standards that the NRC staff have specifically reviewed. In the event that dedicating entity wishes to dedicate an item manufactured and certified under a later edition of IEC 61508, the dedicating entity should verify that the substantive requirements of the later edition related to the dependability characteristic remain unchanged from the 2.0 Edition the NRC staff is endorsing in this RG. 3. The NRC staff endorses the use of ISO/IEC 17065:2012 for use by certifying bodies to perform commercial grade surveys as described in NEI 17-06. DG-1402, Page 10 D. IMPLEMENTATION The NRC staff may use this RG as a reference in its regulatory processes, such as licensing, inspection, or enforcement. However, the NRC staff does not intend to use the guidance in this RG to support NRC staff actions in a manner that would constitute backfitting as that term is defined in 10 CFR 50.109, “Backfitting,” and as described in NRC Management Directive 8.4, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests” (Ref. 14), nor does the NRC staff intend to use the guidance to affect the issue finality of an approval under 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants.” The staff also does not intend to use the guidance to support NRC staff actions in a manner that constitutes forward fitting as that term