Document: NUREG-0800
Document ID: 644c1fee-247e-4265-9466-5876937a7120
Document Type: srp
Title: INFORMATION SYSTEMS IMPORTANT TO SAFETY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550086.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.5
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view of information systems important to safety. The systems addressed below may be implemented either as stand-alone systems or integrated as part of other systems. If the information systems are not isolated from the protection systems, they should also be evaluated according to the criteria in SRP Section 7.2 or 7.3, as appropriate. Other information systems (e.g., plant computer and severe accident monitoring) may be included in the review. The acceptance criteria for such systems depend on the function of the system and the applicable design criteria. Any exceptions or deviations to accident monitoring instrumentation designed to satisfy Regulatory Guide 1.97 should be identified in the SAR. This includes acceptable deviations and clarifications identified in BTP 7-10. 1. The review should include an evaluation of the information systems design against the guidance of IEEE Std. 603-1991 or IEEE Std. 279-1971, depending on the applicant/licensee’s commitment regarding these design criteria. For computer-based information systems important to safety, guidance is provided by IEEE Std. 7-4.3.2-2003 as endorsed by Regulatory Guide 1.152, Revision 2. These procedures are detailed in SRP Appendix 7.1-B for IEEE Std. 279-1971, SRP Appendix 7.1-C for IEEE Std. 603-1991, and SRP Appendix 7.1-D for IEEE Std. 7-4.3.2-2003. The reviewer should consider the overall information system functions at the system level. The design should be compatible with the SAR Chapter 15 design bases accident analyses, and operating procedures as well as applicable guidance of IEEE Std. 279-1971 or IEEE Std. 603-1991. 7.5-8 Revision 5 - March 2007 The review should also consider the guidance provided in NUREG-0737, Supplement 1, “Clarification of TMI Action Plan Requirements - Requirements for Emergency Response Capability,” with respect to accident monitoring instrumentation, ERF, and SPDS. The information systems review should address the topics identified as applicable in SRP Table