Document: NUREG-0800
Document ID: eb117be6-f688-40f6-97a8-c91b8e9f8e74
Document Type: srp
Title: CONTAINMENT HEAT REMOVAL SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070457.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.2
CFR Part: 
CFR Title: 

Content:
ooling water over the life of the plant and the effect of surface fouling on the heat removal capacity of the heat exchangers should be analyzed and the results discussed in the SAR. The analysis will be acceptable if it is shown that provisions such as closed cooling water systems are provided to prevent surface fouling or surface fouling has been accounted for in establishing the heat removal capability of the heat exchangers. 6. To satisfy the requirement of GDC 38 regarding the long-term spray system(s) and emergency core cooling system(s), the containment emergency sump(s) should be designed to provide a reliable, long-term water source for ECCS and CSSthe emergency core cooling system (ECCS) and core spray system (CSS) recirculation pumps. 38 Provision should be made in the containment design to allow drainage of spray and emergency core cooling water to the emergency sump(s), and for recirculation of this water through the containment sprays and emergency core cooling systems. The design of the sumps, and the protective screen assemblies is a critical element in assuringensuring long-term recirculation cooling capability. Therefore, adequate 39 design consideration of (a) sump hydraulic performance, (b) evaluation of potential debris generation and associated effects including debris screen blockage, c)and (c) residual heat removal (RHR) and CSS pump performance under postulated 40 post-LOCA conditions, is necessary. These design considerations are addressed in Regulatory Guide 1.82, Rev. 1 (Ref. 5) and NUREG-0897, Rev. 1 (Ref. 7). 41 42 7. In meeting the requirements of GDC General Design Criteria 39 and 40 regarding inspection and testing, provisions should be made in the design of containment heat DRAFT Rev. 5 - April 1996 6.2.2-6 removal systems for periodic inspection and operability testing of the systems and system components such as pumps, valves, duct pressure- relieving devices, and spray nozzles. 8. To satisfy the system design requirements of GDC