Document: NUREG-0800
Document ID: 89a50aec-b387-4999-9c8e-3b8e4f289a55
Document Type: srp
Title: Revision 3 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0708/ML070800027.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3
CFR Part: 
CFR Title: 

Content:
lant service life and are anticipated operational occurrences, but not during system testing. Postulated Piping Failures. Longitudinal and circumferential breaks in high energy fluid system piping and through-wall leakage cracks in seismically-designed moderate energy fluid system piping postulated according to the provisions BTP 3-4. Also, full circumferential breaks in non- seismic moderate energy piping should be considered (since these breaks are not considered in BTP 3-4 because it only applies during normal operation, not seismic events). Single Active Component Failure. Malfunction or loss of function of a component of electrical or fluid systems. The failure of an active component of a fluid system is considered to be a loss of component function as a result of mechanical, hydraulic, pneumatic, or electrical malfunction, but not the loss of component structural integrity. The direct consequences of a single active component failure are considered to be part of the single failure. 1Footnotes are collected at the end of this appendix. BTP 3-3-8 Revision 3 - March 2007 APPENDIX B This appendix consists of the attachment to the letters sent by A. Giambusso, Deputy Director for Reactor Projects, Directorate of Licensing, in December 1972 to applicants and licensees on the subject of postulated piping failures outside containment. The attachment provided guidance on measures to be taken and on information to be submitted. An errata sheet for the attachment was sent in January 1973 to recipients of the original letters. The attachment as given here has been corrected for the errata. General Information Required for Consideration of the Effects of a Piping System Break Outside Containment The following is a general list of information required for AEC review of the effects of a piping system break outside containment, including the double-ended rupture of the largest pipe in the main steam and feedwater systems, and for AEC review of any proposed design changes that