Document: NUREG-0800
Document ID: a78c6fc8-c253-4d08-bf41-f8120025f067
Document Type: srp
Title: CONTAINMENT HEAT REMOVAL SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0701/ML070160661.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.2
CFR Part: 
CFR Title: 

Content:
primary review organization reviews the heat removal capability of the fan coolers. B. The test programs and calculation models used to determine the performance capability of fan coolers are reviewed for acceptability. C. If the secondary side of a fan cooler heat exchanger is not a closed system, the primary review organization reviews the potential for surface fouling and blockage and determines whether surface fouling and blockage impair the heat removal capability of a fan cooler. 8. The primary review organization reviews the system to determine whether it allows drainage of containment spray water and emergency core cooling water to the recirculation suction points (sump or suppression pool). A. The primary review organization reviews the design of the protective strainer assemblies around the suction points. i. The primary review organization reviews plan and elevation drawings of the protective strainer assemblies which depict the relative positions and orientations of any trash racks or grating and the stages of screening to determine that the potential for debris clogging the screening is minimized. ii. The primary review organization also reviews the drawings to determine that redundant suction points do not share the same screened enclosure. 6.2.2-9 Revision 5 - March 2007 The effectiveness of the protective strainer assembly will be determined by comparing the smallest mesh size of screening provided to the clogging potential of pumps, heat exchangers, valves, and spray nozzles. iii. The application should discuss, and the drawings should identify, the methods of attachment of any trash racks or grating and the screening to the protective strainer assembly structure. iv. The application should discuss the adequacy of the surface area of screening with respect to ensuring a low velocity of approach of the water to minimize the potential for debris in the water being sucked against the screening. v. For plants that do not have both trash racks and