Document: NUREG-0800
Document ID: a28650b3-fa03-428d-a2bd-4a27f583710b
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070484.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6
CFR Part: 
CFR Title: 

Content:
and release of fission products when compared to any other accident. Since it is the most severe challenge expected, containment must be designed to definitively withstand this accident. Following GDC 50 will ensure that containment integrity is maintained under the most severe accident conditions, thus precluding the release of radioactivity to the environment. 4. GDC 53 requires that containment be designed to permit periodic testing and inspection so that its functionality can be confirmed. Since containment is the final barrier against the release of contamination, it is vital that its ability to carry out its design function be maintained and verified throughout the life of the plant. A design that allows periodic verification of containment operability will help ensure that radioactivity is not released to the environment. 5. GDC 13 requires that instrumentation be provided to monitor all expected parameters of normal operation, anticipated operational occurrences, and accidents to assure adequate reactor safety is maintained. Since containment plays a vital safety role, appropriate instrumentation, such as temperature and pressure, must be provided so that operators can verify containment is properly fulfilling its function. Meeting GDC 13 will help ensure that containment accomplishes its mission of precluding the release of radioactivity to the environment. 6. 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 the requirements of GDC 64. Meeting GDC 64 and the specific guidance of