Document: NRC Regulatory Guide
Document ID: c94378e6-d5f2-4911-8d1d-2a16783d9866
Document Type: regulatory_guide
Title: Installation of Overpressure Protection Devices
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1306/ML13064A109.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.67
CFR Part: 
CFR Title: 

Content:
requirements of paragraph C.3. above, the contribution from the reaction force and the moments resulting from that force should include the effects of the Dynamic Load Factor or should use the maximum instantaneous values of forces and moments for that location as determined by the dynamic hydraulic/structural system analysis. This requirement should be satisfied in demonstrating satisfaction of all design limits at all locations of the run pipe and the pressure relief valve station for Class 1, 2, and 3 piping. A Dynamic Load Factor (DLF) of 2.0 may be used in lieu of a dynamic analysis to determine the DLF. 1 .67-2