Document: NUREG-0800
Document ID: 0f097ac2-b7b1-437d-a055-1546a9094ef6
Document Type: srp
Title: CONCRETE CONTAINMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1006/ML100620888.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.1
CFR Part: 
CFR Title: 

Content:
charge must be considered in combination with the design-basis accident. C. Appropriate multiple SRV discharges should be considered in combination with the small-break accident and intermediate-break accident. D. Thermal loads resulting from SRV discharge should be treated as To for normal operation and Ta for accident conditions. 3. COMBINATION OF DYNAMIC LOADS Revision 1 of NUREG-0484 presents guidance on the acceptable methods for combining LOCA, SRV, and the safe-shutdown earthquake (SSE). This report states that the square root of sum of the squares SRSS method is appropriate for the following: A. Combination of SSE and LOCA dynamic responses for all ASME Class 1, 2, or 3 systems, components, or supports. For dynamic responses resulting from the same initiating event, when the time-phase relationship between the responses cannot be established, the absolute summation of these dynamic responses should be used. 3.8.1-30 Revision 3 - May 2010 B. Combining responses of dynamic loads other than LOCA and SSE, if a nonexceedance probability of 84 percent or higher is achieved for the combined SRSS response. Although the above criteria were prepared for ASME systems, components, and supports, they are applicable to seismic Category I structures as well. REFERENCES 1. NUREG-0484, Revision 1, “Methodology for Combining Dynamic Responses,” May 1980. _________________________________________________________________________________________________________ PAPERWORK REDUCTION ACT STATEMENT The information collections contained in the Standard Review Plan are covered by the requirements of 10 CFR Part 50 and 10 CFR Part 52, and were approved by the Office of Management and Budget, approval number 3150-0011 and 3150-0151. PUBLIC PROTECTION NOTIFICATION The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid OMB control