Document: NUREG-0800
Document ID: b3d7a8f7-62f4-4ace-b8c7-32606edaa8f5
Document Type: srp
Title: CONTROL SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1515/ML15159B161.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.7
CFR Part: 
CFR Title: 

Content:
common-cause failure in digital instrumentation and control systems. Therefore, the staff finds that the control system functions credited as diverse means for performing safety functions satisfy the criteria of Item II.Q of the Staff Requirements Memorandum on SECY-93-087. The staff confirmed that the consequential effects of anticipated operational occurrences and accidents do not result in control system failures that would cause plant conditions more severe than those bounded by the analysis of the events. Based on the review of system functions, the staff concludes that the control systems conform to the requirements of 10 CFR 50.34(f)(2)(xxii). The applicant or licensee has incorporated in the system design the requirements of 10 CFR 50.34(f)(2)(xxii), [identify how implemented] which the staff has reviewed and found acceptable. The conclusions of the analysis of anticipated operational occurrences and accidents as presented in Chapter 15 of the SAR have been used to confirm that plant safety is not dependent upon the response of the control systems. The staff also confirmed that failure of the control systems themselves or as a consequence of supporting system failures, such as loss of power sources, does not result in plant conditions more severe than those described in the analysis of design basis accidents and anticipated operational occurrences. 2. For DC and COL reviews, the findings will also summarize the staff‘s evaluation of requirements and restrictions (e.g., interface requirements and site parameters) and COL action items relevant to this SRP section. 3. Note: The following conclusion is applicable to all applications. 4. The conclusions noted above for the control systems are applicable to all portions of the systems except for the following, for which acceptance is based upon prior NRC review and approval as noted (list applicable system or topics and identify references). 5. In addition, to the extent that the review is not discussed in