Document: NUREG-0800
Document ID: c958631d-9dc1-4c62-8d33-f6ae0fcc1955
Document Type: srp
Title: PLANT SYSTEMS (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070666.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.7
CFR Part: 
CFR Title: 

Content:
ate assurance that the equipment can be operated by the RSS. The results of the pre-operational test program may be utilized to demonstrate the ability to operate plant equipment by the RSS. Technical Rationale In addition to meeting the requirements for ITAAC in 10 CFR Part 52, the technical rationale for application of the above acceptance criteria to Tier 1 is discussed in the following paragraphs. 1. Compliance with 10 CFR 50.49 requires that certain electrical equipment be qualified for accident (referred to as harsh) environments. This provides a reasonable assurance that various equipment will perform its intended function in anticipated environments. 2. Compliance with 10 CFR 50.48 requires that fire protection aspects be considered in the design. This provides a reasonable assurance that the design will prevent fires and function safely in the event of a fire. III. REVIEW PROCEDURES 1. Follow the general procedures for review of Tier 1 contained in the Review Procedures section of SRP Section 14.3. Ensure that the DCD is consistent with Appendix A to SRP Section 14.3. Review responsibilities may be consistent with those in Appendix B to SRP Section 14.3. 2. Ensure that all Tier 1 information is consistent with Tier 2 information. Figures and diagrams should be reviewed to ensure that they accurately depict the functional arrangement and requirements of the systems. Reviewers should use the Review Checklists in Appendix C to SRP Section 14.3 as an aid in establishing consistent and comprehensive treatment of issues. 14.3.7-5 DRAFT Rev. 0 - April 1996 3. Ensure that the plant systems are clearly described in Tier 1, including the key performance characteristics and safety functions of SSCs based on their safety significance. 4. The reviewer should ensure that appropriate guidance is provided to other branches such that plant systems issues in Tier 1 are treated in a consistent manner among branches. 5. Ensure that the standard ITAAC entries related to plant