Document: NUREG-0800
Document ID: 16b10f6d-924d-451c-9372-485aa16836b8
Document Type: srp
Title: INFORMATION SYSTEMS IMPORTANT TO SAFETY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350477.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.5
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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 which provide information for manually initiated and manually controlled safety functions, to indicate that plant safety functions are being accomplished, and to provide information from which appropriate actions can be taken to mitigate the consequences of anticipated operational occurrences and accidents. During normal operation these systems provide information on the bypassed or inoperable status of safety systems. The safety parameter display system, information systems associated with the emergency response facilities and nuclear data link are included in the review. Radiation monitoring systems, fire detection systems, and the information systems for environs conditions during and following an accident are addressed in the review of other sections of the SAR. The objectives of the review are to confirm that the information systems important to safety satisfy the requirements of the acceptance criteria and guidelines applicable to these systems and that they will provide the information to assure plant safety during all plant conditions for which they are required. The review verifies that all functional performance requirements of the information systems important to safety satisfy the design bases for safety system functions consistent with the safety analysis described in Chapter 15 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