Abstract

Zulfi Amri, Herman Mawengkang, Tulus, Opim Salim Sitompul.

Recently, the management of drinking water pipelines must face challenges. Because these pipes are mostly located underground, they are vulnerable to damage over time. This damage causes problems such as rupture and leakage in the pipe. This paper proposes to optimally select the appropriate pipe diameter during pipeline replacement planning for drinking water pipelines using an integer programming model. First, the problem was formulated to minimize replacement costs (economic perspective) by considering hydraulic constraints namely stability of flow velocity for each pipe and water pressure at each node. We solved the model using an improved direct search approach.