Document: NUREG-0800
Document ID: 40fd3df4-ccf2-4533-a724-bcd94c5aec2b
Document Type: srp
Title: of the SAR.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550076.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.3
CFR Part: 
CFR Title: 

Content:
(BTP) document the resolution of significant technical issues or questions of interpretation that have arisen in past reviews. BTPs outline acceptable approaches to a particular issue. The approaches taken in BTPs, like the recommendations of regulatory guides, are not mandatory. SECY and associated SRM, regulatory guides and their endorsed industry codes and standards, and BTPs are the guidelines used as SRP acceptance criteria for the evaluation of conformance to the requirements of the NRC's regulations. 2. Use of IEEE Std. 603-1991 and IEEE Std. 279-1971 for Non-Safety Systems. IEEE Std. 603-1991 is an NRC requirement for safety systems and IEEE Std. 279-1971 is an NRC requirement only for protection systems. However, these standards require that protection and safety systems be appropriately isolated from non-safety systems. Consequently, the requirements of IEEE Std. 603-1991 and IEEE Std. 279-1971 apply to the interface between safety and non-safety systems. The quality and reliability of systems important to safety that are not classified as safety systems should still be sufficient to minimize challenges to safety systems and to fulfill their overall role in plant non-safety strategy. Although IEEE Std. 603-1991 and IEEE Std. 279-1971 are not requirements for non-safety I&C systems, these standards describe concepts that are useful in any situation in which functional reliability is a goal. Consequently, although these standards are not SRP acceptance criteria for non-safety I&C systems, they are a source of design concepts that may be useful for the reviewer to consider. The scope of IEEE Std. 603-1991 is broader than that of IEEE Std. 279-1971, and the guidance of IEEE Std. 603-1991 is consequently readily adaptable for use in the review of non-safety I&C systems. 3. Location of Detailed Acceptance Criteria and Review Methods • SRP Appendix 7.1-A provides guidance on the applicability and review methods to be used in evaluating conformance to the