Document: NUREG-0800
Document ID: 5b4fe75c-0560-40a2-9e68-366d25bc7ea0
Document Type: srp
Title: and 7.3.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500552.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.2
CFR Part: 
CFR Title: 

Content:
Rev. 4 — June 1997 Appendix 7-A BTP HICB-16-6 Analysis Analysis should be provided to demonstrate how the requirements of 10 CFR 50.62, General Design Criteria 1, 13, and 19, applicable regulatory guides, and other appropriate criteria and standards are satisfied. For applications involving computer-based RTS or ESFAS, the analysis should also demonstrate that the design is consistent with the assumptions of the D-in-D&D analysis described above. 3.5 Section 7.9 I&C systems utilizing digital computers may also use data communication. Description The SAR should describe the data communication systems provided to support the I&C systems identified in Section 7.1. For data communication systems that support I&C functions in systems important to safety, Section 7.9 should provide the design basis information recommended by Section 4 of IEEE Std 603. Design basis requirements should also be provided for data communication systems that support other I&C functions identified in Section 4 of IEEE Std 603. IEEE Std 603 outlines a set of design basis information that would be acceptable for these systems. Any supporting systems should be identified and described (reference may be made to other sections of the SAR). Final system drawings or DAC/ITAAC should be provided as described for the supported systems above. The DAC should describe the criteria that an acceptable design will meet for the following subjects, or the final design should address the following subjects: • All data communication protocols used should be identified and described. This description should include discussion of error handling together with the method for dealing with the indeterminacy and extra traffic that error handling might engender. • The provisions for bypassed or inoperable status should be described, along with the coordination of communication system bypass or inoperable status with the bypass and inoperable status of the safety system of which the communication system is part. •