Page 221 - Handbook of Materials Failure Analysis

CHAPTER

Reliability and material

failure analysis of water 9

and wastewater systems:

Case studies

Katarzyna Miszta-Kruk
Department of Water Supply and Wastewater Treatment, Faculty of Environmental Engineering,
Warsaw, Poland

CHAPTER OUTLINE
1 Water Supply and Wastewater Disposal Infrastructure ........................................ 217
2 Material and Age Structure of Utility Networks ................................................... 219
3 Damage Analysis .............................................................................................. 224
4 Reliability of Water Supply and Wastewater Disposal Infrastructure .................... 228
5 Examples of Serious Failures of Water Supply and Wastewater Disposal
Systems: Case Study ........................................................................................ 232
6 Conclusion ....................................................................................................... 239
References ............................................................................................................ 240

1 WATER SUPPLY AND WASTEWATER DISPOSAL
INFRASTRUCTURE
In Poland, over 283,000 km of water supply networks and about 50,000 km of ser-
vice lines were in operation in 2012. In the same year, wastewater disposal networks
amounted to 126,000 km [1]. A dynamic development of networks has been
observed in Poland since 1990: the average of about 4500 km of water supply pipe-
lines and over 8000 km of wastewater disposal pipelines were constructed annually
in the period 2005-12. In the Czech Republic, 21% (2012) of the population was sup-
plied with water from public water supply networks, while 79% receives water from
non-public water supply networks. In Canada, the length of water supply networks
reaches almost 91.1% [2].
Materials used to manufacture water supply or wastewater disposal conduits
should be characterized by the following properties:

– Leak-tight
– Inert relative to the transmitted medium (water or wastewater)

Handbook of Materials Failure Analysis With Case Studies from the Chemicals, Concrete, and Power Industries. 217
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