Document: NUREG-0800
Document ID: b3748a15-3b80-4626-a0a5-eb9f270739ad
Document Type: srp
Title: DETERMINATION OF RUPTURE LOCATIONS AND DYNAMIC EFFECTS ASSOCIATED
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340555.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.6.2
CFR Part: 
CFR Title: 

Content:
hasize material from this SRP section, as may be appropriate for a particular case. 1. The locations and configurations of breaks in high-energy piping and leakage cracks in moderate energy piping are reviewed. a. At the CP stage, the applicant's criteria for determining break and crack locations are reviewed for conformance with the acceptance criteria referenced in subsection II of this SRP section. Exceptions taken by the applicant to the referenced pipe break location and configuration criteria must be identified and the basis clearly justified so that evaluation is possible. Deviations from approved criteria and the justifications provided are reviewed to determine acceptability. b. At the OL stage, the following are reviewed to ensure that the pipe break criteria have been properly implemented: (1) Sketches showing the locations of the resulting postulated pipe ruptures, including identification of longitudinal and circumfer- ential breaks, structural barriers, if any, restraint locations, and the constrained directions in each restraint. 3.6.2-3 Rev. I - July 1981 (2) A summary of the data developed to select postulated break loca- tions including, for each point, the calculated stress intensity, the calculated cumulative usage factor, and the calculated primary plus secondary stress range as delineated in References 2 and 3 and BTP MEB 3-1. 2. Analyses of pipe motion caused by the dynamic effects of postulated breaks are reviewed. These analyses should show that pipe motions will not be such as to result in unacceptable impact upon, or overstress of, any struc- ture, system, or component important to safety to the extent that essential functions would be impaired or precluded. The analysis methods used should be adequate to determine the resulting loadings in terms of the kinetic energy or momentum induced by the impact of the whipping pipe, if unre- strained, upon a protective barrier or a component important to safety and to determine the dynamic response