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Project Leader
Yehuda Kleiner
Phone: 613-993-3805
Fax: 613-954-5984
Email: Yehuda.Kleiner@nrc-cnrc.gc.ca
Effect of aging water mains on water quality in distribution systems
Objectives
To study and quantify the impact of aging pipes on water quality, and to provide utility managers with a decision-support tool to help prioritize the renewal of water mains.
Background
A holistic decision-support tool for managing the rehabilitation and renewal of water mains requires the simultaneous consideration of their structural integrity, hydraulic capacity, and role in the deterioration of the quality of distributed water. However, previous research efforts have focused largely on the first two issues, and have ignored the effect of water quality on decision-making.
Progress to Date
- Developed a conceptual framework for prioritizing the rehabilitation and renewal of water mains using a fuzzy cognitive map, which may incorporate uncertain, subjective, and incomplete or missing data.
- Based on the conceptual framework, developed a prototype decision support tool, Q-WARP (water Quality – Water mAin Renewal Planner), to predict the potential occurrence of various mechanisms of water quality deterioration that lead to water quality failures in the distribution network. Q‑WARP can also evaluate multiple strategies for reducing the risk of water quality failures, leading to better-informed decision-making. It can also perform sensitivity analysis to identify key input factors.
Work Remaining
Publish final report.
Expected Outcomes
The final project report and the Q‑WARP prototype software is available through the American Water Works Association Research Foundation.
Partners
American Water Works Association Research Foundation (AwwaRF)
Start/Expected Completion Dates
This project began in September 2003 and was completed in December 2008.
Publications
Water quality failures in distribution networks - risk analysis using fuzzy logic and evidential reasoning
Sadiq, R. Kleiner, Y. Rajani, B.B.
Risk Analysis, 27 (5)
pp. 1381-1394. 2007-10-01
[Full citation / Référence complète]
A Novel modelling approach to predict risk of water quality failures in deteriorating water mains
Sadiq, R. Kleiner, Y. Rajani, B.B. Tesfamariam, S.
Water Management Challenges in Global Change CCWI2007 and SUWM2007 Conference (Leicester, UK, 2007-09-03)
pp. 223-228. 2007-09-03
[Full citation / Référence complète]
Estimating risk of contaminant intrusion in distribution networks using fuzzy rule- based modeling NATO Science for Peace and Security Series D: Information and Communication Security
Sadiq, R. Kleiner, Y. Rajani, B.B. 13
Proceedings of the NATO Advanced Research Workshop on Computational Models of Risks to Infrastructure (Primosten, Croatia, 2006-05-09)
pp. 318-327. 2007-08-01
[Full citation / Référence complète]
Q-WARP - researchers have developed a decision support tool to predict the effects on water quality of aging water mains in distribution networks
Sadiq, R. Kleiner, Y. Rajani, B.B.
Canadian Consulting Engineer, 48 (1)
pp. 32, 34. 2007-01-01
[Full citation / Référence complète]
Estimating risk of contaminant intrusion in distribution networks using Dempster-Shafer theory of evidence
Sadiq, R. Kleiner, Y. Rajani, B.B.
Civil Engineering and Environmental Systems, 23 (3)
pp. 129-141. 2006-09-01
[Full citation / Référence complète]
