Ontario hydro's leak-before-break approach to Darlington NGS heat transport system piping

The primary objective in our Leak-Before-Break studies is to show how a rational and comprehensive approach can provide an adequate measure of confidence in the assessment of piping integrity such that provision of design features (viz. pipewhip restraints, jet impingement shields) to protect agains...

Full description

Saved in:
Bibliographic Details
Published in:The International journal of pressure vessels and piping 1990, Vol.43 (1), p.113-127
Main Authors: Nathwani, J.S., Stebbing, J.D.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The primary objective in our Leak-Before-Break studies is to show how a rational and comprehensive approach can provide an adequate measure of confidence in the assessment of piping integrity such that provision of design features (viz. pipewhip restraints, jet impingement shields) to protect against the dynamic effects of pipe rupture is not necessary. This study is one component of the overall Leak-Before-Break approach adopted at Ontario Hydro. The results of a review undertaken to evaluate the system transients or events sequences which may subject the piping to a potentially significant increase in loadings are reported. The focus in this paper is to show the approach used in deriving loadings for use in the elastic-plastic fracture mechanics (EPFM) analyses required to demonstrate crack stability.
ISSN:0308-0161
1879-3541
DOI:10.1016/0308-0161(90)90096-Z