Document: NUREG-0800
Document ID: 1ab4716a-a40c-4204-ba6f-a70d75bcaedb
Document Type: srp
Title: INSTRUMENTATION AND CONTROLS - INTRODUCTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1515/ML15159B068.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.1
CFR Part: 
CFR Title: 

Content:
the I&C systems important to safety are reviewed to confirm that the appropriate guidelines have been identified for each system. Subsections 3, 4, and 5 of SRP Appendix 7.1-A identify the guidelines applicable to the I&C systems important to safety and describe the method and scope of the review to verify conformance. 4. When the applicant or licensee takes exceptions to the guidelines applicable to I&C systems important to safety, the bases for such exceptions are reviewed to confirm that they are acceptable. The bases for the exceptions to the guidelines should demonstrate that a significant reduction in the margin of safety does not result and that the exceptions do not result in nonconformance to the requirements of the acceptance criteria. 5. When the applicant or licensee proposes I&C systems that incorporate digital computers, the review includes the supplemental guidance for digital computer-based systems described in SRP Appendix 7.1-D. SRP Appendix 7.0-A describes the review process. 6. The review includes the I&C systems important to safety that are identified as identical to systems that have been reviewed and approved by the staff. The evaluation of these systems in subsequent sections of Chapter 7 is based on prior staff approval. When differences exist between prior approvals, the differences should be identified and the review should confirm that an adequate basis has been provided. The review should include an evaluation of the differences to confirm that they are acceptable. 7. If the proposed I&C systems employ technologies that have not previously been accepted by the staff, the reviewer should identify these technologies and establish a basis for acceptance prior to proceeding with the review. 8. For review of a DC application, the reviewer should follow the above procedures to verify that the design, including requirements and restrictions (e.g., interface requirements and site parameters), set forth in the final safety analysis report (FSAR)