Document: NUREG-0800
Document ID: fa9a9d5c-42ee-4507-b736-571f01da69cc
Document Type: srp
Title: CONTROL SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070670042.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.7
CFR Part: 
CFR Title: 

Content:
is required by 10 CFR 50.55a(h) only for safety systems, the criteria of IEEE Std. 603-1991 may be used as review guidance for any I&C system. Therefore, for control systems, the reviewer may use the concepts in IEEE Std. 603-1991 as a starting point. 2. SRP Appendix 7.1-B provides SRP acceptance criteria for protection system compliance with 10 CFR 50.55a(h). 3. SRP Appendix 7.1-D provides SRP acceptance criteria for digital I&C compliance with IEEE Std. 7-4.3.2-2003, "IEEE Standard Criteria for Digital Computers in Safety Systems of Nuclear Power Generating Stations," as endorsed by Regulatory Guide 1.152, Revision 2, "Criteria for Digital Computers in Safety Systems of Nuclear Power Plants." 7.7-5 Revision 5 - March 2007 4. Item II.Q, "Defense Against Common-Mode Failures in Digital Instrument and Control Systems," of the Staff Requirements Memorandum on SECY-93-087, "Policy, Technical, and Licensing Issues Pertaining to Evolutionary and Advanced Light Water Reactor (ALWR) Designs," provides guidance on Defense-in-Depth and Diversity. SRP BTP 7-19 provides additional guidance. III. REVIEW PROCEDURES The reviewer will select material from the procedures described below, as may be appropriate for a particular case. Typical reasons for a non-uniform emphasis are the introduction of new design features or the utilization in the design of features previously reviewed and found acceptable. These review procedures are based on the identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. SRP Section 7.1 describes the general procedures to be followed in reviewing any I&C system. This part of SRP Section 7.7 highlights specific topics that should be emphasized in the review of control systems. 1. The control systems review should address the applicable