Document: NUREG-0800
Document ID: ab4f353d-c299-479d-ab25-834f97196988
Document Type: srp
Title: CONCRETE AND STEEL INTERNAL STRUCTURES OF STEEL OR CONCRETE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070326.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.3
CFR Part: 
CFR Title: 

Content:
tdown o conditions, based on the most critical transient or steady state condition. Severe environmental loads include: E - Loads generated by the operating basis earthquake. DRAFT Rev. 2 - April 1996 3.8.3-18 Extreme environmental loads include: E' - Loads generated by the safe shutdown earthquake. Abnormal loads, which are those loads generated by a postulated high-energy pipe break accident, include: P - Pressure equivalent static load within or across a a compartment generated by the postulated break, including an appropriate dynamic load factor to account for the dynamic nature of the load. T - Thermal loads under thermal conditions generated by the a postulated break, including T . o R - Pipe reactions under thermal conditions generated by the a postulated break, including R . o Y - Equivalent static load on the structure generated by the r reaction on the broken high-energy pipe during the postulated break, including an appropriate dynamic load factor to account for the dynamic nature of the load. Y - Jet impingement equivalent static load on a structure j generated by the postulated break, including an appropriate dynamic load factor to account for the dynamic nature of the load. Y - Missile impact equivalent static load on a structure m generated by or during the postulated break, as from pipe whipping, including an appropriate dynamic load factor to account for the dynamic nature of the load. In determining an appropriate equivalent static load for Y , Y , and Y , r j m elasto-plastic behavior may be assumed with appropriate ductility ratios, provided excessive deflections will not result in loss of function of any safety-related system. For structures or structural components subjected to hydrodynamic loads resulting from LOCA and/or SRV actuation, the consideration of such loads should be as indicated in the Appendix to SRP Section 3.8.1 fluid structure interaction associated with these hydrodynamic loads and those from earthquakes should be taken into