Document: NUREG-0800
Document ID: 545a669a-51a1-4b1f-9d90-78ee08ca0845
Document Type: srp
Title: COMBUSTIBLE GAS CONTROL IN CONTAINMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070463.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.5
CFR Part: 
CFR Title: 

Content:
control system designs: 1. An analysis of combustible gas (i.e., hydrogen and oxygen) production and accumulation within the containment following a loss-of-coolant accidentLOCA. 2. An analysis of the functional capability of the systems provided to mix the combustible gas within the containment. 3. An analysis of the functional capability of the systems provided to reduce combustible gas concentrations within the containment. 4. Analyses of the capability of systems or system components to withstand dynamic effects, such as transient differential pressures that would occur early in the blowdown phase of a loss-of-coolant accidentLOCA. 5. Analyses of the consequences of single active component malfunctions. 6. The quality classification of each system. 7. The seismic design classification of each system. 8. The results of qualification tests performed on system components to demonstrate functional capability. 9. The design provisions and proposed program (including technical specifications at the operating license (OL) or combined license (COL) stage of review) for periodic 8 9 inservice inspection, operability testing and leak rate testing of each system or component. 10. The functional aspects of instrumentation provided to monitor system or system component performance. 11. The extent of sharing of system components between sites or between units at a multi-unit site. 6.2.5-3 DRAFT Rev. 3 - April 1996 At the construction permit (CP) or early site permit stage of review the design of the systems 10 provided for monitoring and reducing the concentrations of combustible gases within the containment may not be completely determined. In such cases, CSBSCSB reviews the applicant's preliminary designs and statements of intent to comply with the acceptance criteria for such systems. At the operating license OL or COL stage, CSBSCSB reviews the final designs of these systems to verify that they meet the acceptance criteria detailed in subsection II of this SRP section.