Document: NUREG-0800
Document ID: 780c1b1a-22d0-409e-a14b-2a78f7383052
Document Type: srp
Title: CONTROL SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350478.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.7
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Instrumentation and Control Systems Branch (ICSB) Secondary - None I. AREAS OF REVIEW The areas reviewed in this section of the applicant's safety analysis report (SAR) include those control systems used for normal operation that are not relied upon to perform safety functions following anticipated operational occurrences or accidents but which control plant processes having a significant impact on- plant safety. These control systems include the reactivity control systems; the reactor coolant pressure, temperature, flow, and inventory controls; and the secondary system pressure and flow controls (PWR); and the environmental control system for safety related instruments and instruments sensing lines. These systems are reviewed to assure that they conform to the acceptance criteria and guidelines, that the controlled variables can be maintained within prescribed operating ranges, and that effects of operation or failure of these systems are bounded by the accident analyses in Chapter 15 of the SAR. The evaluation of the separation of protection systems and control systems is addressed in the reviews of Sections 7.2 and 7.3 of the SAR. The review performed for a construction permit application may be based on preliminary designs and the depth of information need only be sufficient to provide reasonable assurance that the final design will conform to the design bases and applicable criteria with an adequate margin for safety. The review performed for an operating license (OL) application is based upon detailed design information that confirms that the final design conforms to the design bases and applicable criteria. The depth of the review for an OL application should be sufficient to conclude that the requirements of the Comnission regulations have been satisfied. The depth of the review for the balance of the criteria should be sufficient to conclude that the systems conform with the guidlines to the extent necessary to support the