Document: NUREG-0800
Document ID: ec8e8c49-ea1e-4b46-a508-500ea11caad2
Document Type: srp
Title: ULTIMATE HEAT SINK
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350549.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.5
CFR Part: 
CFR Title: 

Content:
ed under SRP Section 3.5.1.1, c. Review of the structures, system, and components to be protected against externally generated missiles is performed under SRP Section 3.5.2, and d. Review of high- and moderate-energy pipe breaks is performed under SRP Section 3.6.1. In addition, ASB will coordinate other branch evaluations that interface with the overall review of the system as follows: The Reactor Systems Branch (RSB) will confirm the heat loads transmitted to the UHS from the reactor coolant and emergency core cooling systems as part of its primary review responsibility f6r SRP Section 6.3. The Structural Engineering Branch (SEB) will determine the acceptibility of the design analyses, procedures, and criteria used to establish the ability of seismic Category I structures housing the system and supporting systems to withstand the effects of natural phenomena such as the safe shutdown earthquake (SSE), the probable maximum flood (PMF), and the tornado missiles as part of its primary review responsibility for SRP Sections 3.3.1, 3.3.2, 3.5.3, 3.7.1 through 3.7.4, 3.8.4, and 3.8.5. The Materials Engineering Branch (MTEB) verifies the inservice inspection require- ments are met for system components and the compatibility of the materials of construction with the service conditions as part of its primary review responsi- bility for SRP Section 6.1.1. The Instrumentation and Control Systems Branch (ICSB) and Power Systems Branch (PSB) will verify the adequacy of the design, installation, inspection, and testing of all.electrical systems (sensing, control, and power) required for proper operation as part of the primary review responsi- bilities for SRP Section 7.1 and Appendix 7-A for ICSB and SRP Section 8.3.1 for PSB. The Hydrologic and Geotechnical Engineering Branch (HGEB) verifies the ultimate heat sink water levels, meteorological and natural phenomena criteria, and transient analysis of the cooling water inventory as part of its primary review responsibility foi'