Document: NUREG-0800
Document ID: 0e333e1a-276a-43f1-b2ab-fdf1009c6f92
Document Type: srp
Title: Draft Revision 3 – August 2015
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1422/ML14227A646.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3
CFR Part: 
CFR Title: 

Content:
d be designed to meet the following criteria and tests: (a) The design pressure and temperature should not be less than the maximum operating pressure and temperature of the enclosed pipe under normal plant conditions. (b) The Level C stress limits in ASME Code, Section III, NE-3220 should not be exceeded under the loading associated with containment design pressure and temperature in combination with the safe shutdown earthquake. (c) Guard pipe assemblies should be subjected to a single pressure test at a pressure not less than its design pressure. (d) Guard pipe assemblies should not prevent the access necessary to conduct the inservice examination specified in 2.A(ii)(7). Inspection ports, if used, should not be located in that portion of the guard pipe through the annulus of dual barrier containment structures. (7) A 100 percent volumetric inservice examination of all pipe welds should be conducted during each inspection interval as defined in ASME Code, Section XI, IWA-2400. (iii) Postulation of Pipe Breaks in Areas Other Than Containment Penetration (1) With the exceptions of those portions of piping identified in 2.A(ii), breaks in Class 1 piping (ASME Code, Section III) should be postulated at the following locations in each piping and branch run: BTP 3-4-5 Draft Revision 3 – August 2015 (a) At terminal ends.3 (b) At intermediate locations where the maximum stress range4 as calculated by Eq. (10) and either Eq. (12) or Eq. (13) exceeds 2.4Sm. (c) At intermediate locations where the cumulative usage factor exceeds 0.1. As a result of piping reanalysis, the highest stress locations may be shifted; however, the initially determined intermediate break locations need not be changed unless one of the following conditions exists: (i) The dynamic effects from the new (as-built) intermediate break locations are not mitigated by the original pipe-whip restraints and jet shields. (ii) A change is necessary in pipe parameters such as major differences in pipe size,