Document: NUREG-0800
Document ID: f03d2c71-27a1-41fd-9362-1e62c6142e13
Document Type: srp
Title: Containment Systems and Severe Accidents (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070653.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.11
CFR Part: 
CFR Title: 

Content:
Fail-safe position of pneumatic valves that are relied upon to accomplish the direct safety function of the system. (See Appendix C.I for guidance.) 14.3-51 DRAFT Rev. 0 - April 1996 ITAAC CHECK LIST SYSTEM: 1. Basic configuration 2. Hydrostatic test for ASME Section III components 3. Net positive suction head 4. Divisional power supplies 5. Physical separation 6. Control room configuration 7. Remote shutdown system 8. Motor operated valves 9. Pneumatically operated valves 10. Check valves 11. Operational and functional aspects of the system 12. Critical assumptions from transient and accident analyses 13. PRA insights (RAP input) 14. On-line testing features 15. Surge tanks 16. Special cases for seismic qualification (e.g., ABWR main steam line piping) 17. Initiation logic 18. Interlocks 19. Flow control valves 20. Pressure testing of ventilation systems 21. Chapter 14 Testing reviewed (See Appendix C.II for guidance.) DRAFT Rev. 0 - April 1996 14.3-52 ELECTRICAL SYSTEMS REVIEW CHECKLIST This section is intended to provide additional guidance for evaluating Tier 1 system design descriptions (DDs), figures, and ITAAC in the electrical area (for purposes of review responsibility the electrical area also includes the Lighting Systems). The following information should be included in Tier 1 information in a consistent order. A. DESIGN DESCRIPTIONS AND FIGURES Electrical equipment that is involved in performing the direct safety function should be addressed in the Design Description (see IEEE-308-1980 paragraph 5.2 for a discussion of direct safety function). This would basically include (in Tier 1) the complete Class 1E electric system - including power sources (which include offsite sources even though they are not Class 1E) and distribution equipment. With regard to the electrical equipment that is part of the Class 1E system but is included to improve the reliability of the individual Class 1E divisions (for example equipment protective trips), additional factors