ID:
publications-3788
Type:
article
Year:
2009
Authors:
Giustolisi, Orazio and Giustolisi, Orazio and Berardi, Luigi and Berardi, Luigi
Title:
Prioritizing pipe replacement: from multiobjective genetic algorithms to operational decision support.
Venue/Journal:
Journal of Water Resources Planning and Management
DOI:
10.1061/(asce)0733-9496(2009)135:6(484)
Research type:
Water System:
Technical Focus:
Abstract:
Deterioration of water distribution systems and the optimal allocation of limited funds for their rehabilitation represent crucial challenges for water utility managers. Decision makers should be provided with a set of β€_x009c_informedβ€_x009d_ solutions to select the best rehabilitation plan with regard to available resources and management strategies. In a risk-based scenario, such an approach should result in an element-wise prioritization scheme based on individual pipe rehabilitation/replacement effectiveness. This manuscript describes a framework for devising a short-term decision support tool for pipe replacement. The approach allows for the introduction of economic, technical, and management rationales as separate objectives to produce a pipe-wise prioritization scheme which is achieved by ranking pipes selected during a multiobjective (MO) evolutionary optimization of replacement scenarios. Such a procedure helps overcome the doubts in choosing among the solutions obtained by MO evolutionary optimization due to...
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