Yehuda Kleiner

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This paper provides a comprehensive (although not exhaustive) overview of a large body of work carried out in the last twenty years to quantify the structural deterioration of water mains by analysing historical performance data. The physical mechanisms that lead to pipe failure often require data that are not readily available and are costly to obtain.(More)
Intrusion of contaminants into water distribution networks requires the simultaneous presence of three elements; contamination source, pathway and driving force. The existence of each of these elements provides 'partial' evidence (typically incomplete and non-specific) to the occurrence of contaminant intrusion into distribution networks. Evidential(More)
The effective planning of water distribution system renewal requires accurate quantification of the structural deterioration of water mains. As typical water distribution systems comprise hundreds and even thousands of buried pipes, direct inspection of all of them is often prohibitively expensive. Identifying water main breakage patterns over time is an(More)
The pathways, through which water quality in the distribution network can be compromised, may be classified into five categories: intrusion of contaminants into the distribution system (e.g., through cross connection), regrowth of bacteria in pipes and distribution storage tanks, water treatment breakthrough, leaching of chemicals or corrosion products from(More)
The effective management of failure risk of buried infrastructure assets requires knowledge of their current condition, their rate of deterioration, the expected consequences of their failure and the owner's (decision-maker) risk tolerance. Fuzzy-based techniques seem to be particularly suited to modeling the deterioration of buried infrastructure assets,(More)
The evaluation of the risk of water quality failures in a distribution network is a challenging task given that much of the available data are highly uncertain and vague, and many of the mechanisms are not fully understood. Consequently, a systematic approach is required to handle quantitative-qualitative data as well as a means to update existing(More)
ii DISCLAIMER The U.S. Environmental Protection Agency (EPA), through its Office of Research and Development, funded and managed, or partially funded and collaborated in, the research described herein under Task Order (TO) 0062 of Contract No. EP-C-05-057 to Battelle. It has been subjected to the Agency's peer and administrative review and has been approved(More)
Precise causes of water quality failures are often difficult to pinpoint. The complexity of the distribution system (many kilometers of pipes of different materials and ages), occurrences of physical/chemical/biological processes and the lack or absence of timely data make forensic analyses of water quality failure events very challenging. Water quality(More)
Cathodic protection (CP) of metallic water mains has been proven in many cases to be an effective method of reducing breakage frequency and extending the useful life of pipes, however, the effectiveness of CP can vary with specific conditions of water mains. The effectiveness of CP can ultimately be expressed in terms of economic benefits obtained as a(More)