Failure Prevention of Large-Diameter Cast Iron Water Pipes Using Leak-Before-Break Concept

2019 ◽  
pp. 677-687 ◽  
Author(s):  
S. Rathnayaka ◽  
B. Shannon ◽  
R. Deo ◽  
G. Fu ◽  
J. Kodikara
Keyword(s):  
Cast Iron ◽  
Large Diameter ◽  
Failure Prevention ◽  
Water Pipes ◽  
Leak Before Break

Introduction of the leak-before-break (LBB) concept for cast iron water pipes on the basis of laboratory experiments

2017 ◽  
Vol 14 (8) ◽  
pp. 820-828 ◽  
Author(s):  
Suranji Rathnayaka ◽  
Benjamin Shannon ◽  
Chunshun Zhang ◽  
Jayantha Kodikara
Keyword(s):  
Cast Iron ◽  
Laboratory Experiments ◽  
Water Pipes ◽  
Leak Before Break

Leak-before-break (LBB) analysis and failure processes for small-diameter cast iron pipes

2017 ◽  
pp. 625-630
Author(s):  
R. Jiang ◽  
D. Weerasinghe ◽  
C. Zhang ◽  
X.L. Zhao ◽  
J. Kodikara ◽  
...  
Keyword(s):  
Cast Iron ◽  
Small Diameter ◽  
Leak Before Break

Characterization of corrosion morphologies from deteriorated underground cast iron water pipes

2019 ◽  
Vol 70 (10) ◽  
pp. 1837-1851 ◽  
Author(s):  
Ravin N. Deo ◽  
Suranji Rathnayaka ◽  
Chunshun Zhang ◽  
Guoyang Y. Fu ◽  
Benjamin Shannon ◽  
...  
Keyword(s):  
Cast Iron ◽  
Water Pipes

Evaluation of an intrusive technology to diagnose buried pipelines

2014 ◽  
Vol 14 (5) ◽  
pp. 931-937 ◽  
Author(s):  
B. Bouttier ◽  
Y. Gourbeyre ◽  
M. Hassine ◽  
J. C. Potier ◽  
P. Bréant
Keyword(s):  
Cast Iron ◽  
Water Supply ◽  
Probability Of Detection ◽  
Real Problem ◽  
Buried Pipelines ◽  
Buried Pipes ◽  
Supply Networks ◽  
Water Pipes ◽  
Water Supply Networks ◽  
Non Destructive

Ageing of water supply networks is a real problem which leads to leaks and bursts. A great challenge is to discover the state of degradation of the buried pipes. This paper describes the knowledge of Veolia Water – SADE of a non-destructive technology to inspect cast iron water pipes and the methodology developed to define its performance in terms of probability of detection of defects.

scholarly journals A Multiaxial Notch Fatigue Methodology to Estimate In-Service Lifetime of Corroded Cast Iron Water Pipes

2013 ◽  
Vol 577-578 ◽  
pp. 125-128
Author(s):  
W. Brevis ◽  
Luca Susmel ◽  
J.B. Boxall
Keyword(s):  
Cast Iron ◽  
Fatigue Damage ◽  
Fatigue Loading ◽  
Multiaxial Fatigue ◽  
Variable Amplitude ◽  
Water Pipes ◽  
Service Lifetime ◽  
Curve Method ◽  
Over Time

The present paper summarises an attempt of using the so-called Modified Wöhler Curve Method (MWCM) to estimate fatigue damage in pitted cast iron water pipes subjected to in-service variable amplitude multiaxial fatigue loading. In this setting, pits are treated as hemispherical/hyperbolic notches whose depth increases over time due to conventional corrosion processes taking places in buried cast-iron pipes. The validity of such an approach is proven by showing, through a case study, that, under particular circumstances, the combined effect of corrosion and fatigue can remarkably shorten the in-service lifetime of cast-iron pipes as observed in the case study.

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