Document: NUREG-0800
Document ID: f90f6920-8ff7-4a39-b6a6-85bf7887d69f
Document Type: srp
Title: CONTAINMENT HEAT REMOVAL SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340671.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.2
CFR Part: 
CFR Title: 

Content:
emoval system being safety-grade design; i.e., have suitable redundancy of components and features, and interconnec- tions, to assure that for either a loss of onsite as a loss of off- site power, the system function can be accomplished assuming a single failure. 6.2.2-2 Rev. 4 - October 1985 d. Leak detection, isolation and containment capabilities being incor- porated in the design of the containment heat removal system. 2. General Design Criterion 39, as it relates to the containment heat removal system being designed to permit periodic inspecton of components. 3. General Design Criterion 40, as it relates to the containment heat removal system being designed to permit periodic testing to assure system inte- grity, and the operability of the system, and active components. Specific acceptance criteria necessary to meet the relevant requirement of GDC 38, 39, and 40 are as follows: 1. The containment heat removal systems should meet the redundancy and power source requirements for an engineered safety feature; i.e., the systems should be designed to accommodate a single active failure. The results of failure modes and effects analyses of each system should assure that the system is capable of withstanding a single failure without loss of function. This is conformance with the requirements of General Design Criterion 38. 2. With regard to General Design Criterion 38 as it relates to the capability of containment system to accomplish its safety function, the spray system should be designed to accomplish this without pump cavitation occurring. Therefore, the net positive suction head available to the pumps in both the injection and recirculation phases of operation should be greater than the required NPSH. A supporting analysis should be presented in sufficient detail to permit the staff to determine the adequacy of the analysis and should show that the available NPSH is greater than the required NPSH. Regulatory Guide 1.82, Rev. 1 (Ref. 5) describes methods