Document: NRC Regulatory Guide
Document ID: fc586342-92f7-4c77-ae76-79e3674cf288
Document Type: regulatory_guide
Title: Criteria for Programmable Digital Devices in Safety-Related Systems of  Nuclear Power Plants + HISTORY –HISTORY 02/2023 – DG-1374, Proposed Revision 4 Prior to issuance of DG-1374, RG 1.152 was entitled, “Criteria for Use of Computers in Safety-Systems of Nuclear Power Plants” 06/2010 – DG-1249, Proposed Revision 3 – Revise 12/2004 – DG-1130, Proposed Revision 2 – Revise 05/1995 – DG-1039, Proposed Revision 1 03/1983 – DG-1130, Proposed Revision 2 – Revise (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2301/ML23012A242.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.152
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CFR Title: 

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ment. BTP 7-19 provides staff guidance for the evaluation of defense in depth and diversity to address CCF due to latent design defects in digital safety systems. 3. Annex C, “Dedication of Existing Commercial Computers,” provides useful reference information (i.e., references to certain commercial-grade-dedication related documents) but does not provide specific guidance, and therefore has not received NRC endorsement. This RG endorses Clause 5.17 of IEEE Std 7-4.3.2-2016, which provides guidance for the evaluation and implementation of commercial digital equipment. Further guidance for commercial-grade dedication appears in RG 1.164, “Dedication of Commercial-Grade Items for Use in Nuclear Power Plants” (Ref. 13), which endorses Electric Power Research Institute (EPRI) 3002002982, “Plant Engineering: Guideline for the Acceptance of Commercial-Grade Design and Analysis Computer Programs Used in Nuclear Safety-Related Applications,” issued September 2014 (Ref. 14). In addition, guidance for verifying a DI&C item’s dependability critical characteristics based on an accredited certification during the dedicating process appears in RG 1.250, “Dedication of Commercial-Grade Digital I&C Items for Use in Nuclear Power Plants” (Ref. 15), which endorses Nuclear Energy Institute (NEI) 17-06, “Guidance on Using IEC 61508 SIL Certification to Support the Acceptance of Commercial Grade Digital Equipment for Nuclear Safety Related Applications,” issued December 2021 (Ref. 16). Further, EPRI Topical Report (TR)-106439, “Guideline on Evaluation and Acceptance of Commercial Grade Digital Equipment for Nuclear Safety Applications,” issued October 1996 (Ref. 17), contains guidance specific to commercial-grade dedication processes for digital equipment that the staff has found to be acceptable, with clarifications, as documented in the NRC safety evaluation report, “Safety Evaluation by the Office of Nuclear Reactor Regulation Electric Power Research