Document: NUREG-0800
Document ID: 2c839e4a-a342-4e25-9a7c-82d678a0f754
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340657.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6
CFR Part: 
CFR Title: 

Content:
ulated differential pressure. For Mark I, II and III plants at the operating license stage, the peak calculated containment pressure and differential pressure should be less than the design values. In general, it is expected that the peak calcu- lated pressures will be about the same as at the construction permit stage. However, it is possible that the margins may be affected by revised or improved analytical models, test results, or minor changes in the as- built design of the plant. 2. In meeting the requirement of General Design Criterion 4, regarding the dynamic effects associated with normal and accident conditions, calcula- tion of dynamic loads should be based on appropriate analytical models and supported by applicable test data. Consideration should be given to loads on suppression pool retaining structures and structures which may be located directly above the pool, as a result of pool motion during a loss-of-coolant accident or following actuation of one or more reactor coolant system safety/relief valves. The acceptability of pool dynamic loads for plants with Mark I containments is based on conformance with NRC acceptance criteria found in NUREG-0661 (Ref. 39 and 1c). The acceptability of loss-of-coolant accident related pool dynamic loads for plants with Mark II containments is based on conformance with the generic loads previously reviewed and found acceptable by the NRC and NRC acceptance criteria. The loss-of-coolant accident related pool dynamic loads and criteria are as discussed in NUREG-0808 (Ref. lb), and Appen- dix B to this SRP section. These loads and criteria supersede those discussed in references 36, 37 and 38. Pool dynamic loads and criteria associated with the actuation of one or more reactor coolant system safety/ relief valves are specified in Appendix A of NUREG-0802 (Ref. le). The acceptability of pool dynamic loads for plants with Mark III contain- ments is based on conformance with the NRC acceptance criteria identified in