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:
at may be released into the reactor containment following postulated accidents to assureensure that containment integrity is maintained; systems being designed to safety-grade requirements; i.e., that there be suitable redundancy in components and features, and suitable interconnections to assureensure that for either a loss of onsite or a loss of offsite power the system safety function can be accomplished, assuming a single failure; and systems being provided with suitable leak detection, isolation and containment capability to assureensure that system safety function can be accomplished. 4. General Design Criterion 42 as it relates to the design of the systems to permit appropriate periodic inspection of components to assureensure the integrity and capability of the systems. 5. General Design Criterion 43 as it relates to the systems being designed to permit periodic testing to assureensure system integrity, and the operability of the systems and active components. Specific criteria necessary to meet the requirements of 10 CFR Part 50, §§ 50.34, 50.44 and 50.46 and GDC 5, 41, 42 and 43, are as follows: 1. In meeting the requirements of 10 CFR Part 50, §§ 50.34, 50.44 and 50.46 and GDC 41 to provide systems to control the concentration of hydrogen or oxygen in the containment atmosphere , the analysis of hydrogen and oxygen production should be based on the parameters listed in Table 1 of Regulatory Guide 1.7 for the purpose of establishing the design basis for combustible gas control systems. 2. In meeting the requirements of 10 CFR Part 50, §§ 50.34, 50.44 and 50.46 and GDC 41 to provide systems to control the concentration of hydrogen or oxygen in the containment atmosphere following postulated accidents, that can safely accommodate hydrogen generated by an equivalent of a 100% fuel-clad metal water reaction following postulated accidents and that containment hydrogen concentration be limited to 10% of the fission 26 product decay energy used in the