Document: NUREG-0800
Document ID: 3e34268a-a6f4-4ce5-ba4d-7f2cec5a192e
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070481.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6
CFR Part: 
CFR Title: 

Content:
een found acceptable by the NRC as fulfilling GDC 13. Meeting GDC 13 and the specific requirements of Regulatory Guide 1.97 will help ensure that containment accomplishes its mission of precluding the release of radioactivity to the environment. 5. GDC 64 requires that the containment atmosphere be monitored for the release of radioactivity from normal operations, anticipated operational occurrences, and accidents. In order to ensure that containment functions properly, operators must be aware of any radioactive releases within containment so that they can take appropriate manual action or monitor automatic action. Regulatory Guide 1.97 provides specific criteria for the design of containment instrumentation which have been found acceptable by the NRC as fulfilling GDC 64. Meeting GDC 64 and the specific requirements of Regulatory Guide 1.97 will assist operators in ensuring that containment meets its safety function of preventing the release of radioactivity to the environment. 6. 10 CFR 50, §50.34(f)(3)(v)(A)(1) requires that the containment be designed to withstand either hydrogen burning or initiation of the post-accident inerting system, if installed, during an accident that releases hydrogen from a 100% fuel clad metal-water reaction. During the accident at TMI-2, metal-water reactions generated hydrogen in excess of the amounts originally anticipated. As a result of this finding, the Commission issued requirements on hydrogen control in 10 CFR 50.34(f). Other criteria require the containment to be designed to withstand postulated accidents. If such a postulated 6.2.1.1.A-7 DRAFT Rev. 3 - April 1996 accident releases or generates hydrogen, an added containment pressurization effect beyond the initial accident may be experienced due to burning of hydrogen or initiation of the post-accident inerting system, if installed. The containment must be designed to withstand this additional pressure to ensure that its integrity is maintained, thus precluding the release