• AWWA ACE99335
Provide PDF Format

Learn More

AWWA ACE99335

  • Statistical Models for Assessing the Technical State of Water Networks - Some European Experiences
  • Conference Proceeding by American Water Works Association, 01/01/1999
  • Publisher: AWWA

$12.00$24.00


This paper describes case studies where predictive service-life models are used for assessing the technical state of each individual pipe in a water distribution network. The goal is to enable planners to predict how the technical state of the pipes will change and, as a consequence, which are in most urgent need of repair. The mechanism of water pipes breaks is very complex and it is clearly difficult to create an applying physical model taking into account all the parameters. So statistical methods like lifetime models are emphasized. Historical failure records are then essential and together with network inventory data give the input for the analysis. The historical failure records are analyzed with a Weibull proportional hazard model. This paper describes some European practices in dealing with predictions of the technical state of pipes. Data from two water utilities in France and from the city of Trondheim, Norway, are used in the analysis.

Related Products

AWWA WQTC64011

AWWA WQTC64011

Indirect Detection of Intentional Chemical Contamination in the Distribution System Using Low Cost T..

$12.00 $24.00

AWWA DSS92016

AWWA DSS92016

Corrosion Failures in the Water Industry Case Histories..

$12.00 $24.00

AWWA WQTC69386

AWWA WQTC69386

Implementation of Low-Pressure Membrane Technology: Estimating Log-Removal Value (LRV) Uncertainty u..

$12.00 $24.00

AWWA ACE70859

AWWA ACE70859

The Effect of Partial Lead Service Line Replacements on Lead Leaching..

$12.00 $24.00