Study of Pipe Selection Methods to Be Rehabilitated: A Case Study of Jakarta City
Abstract
Some water distribution pipelines in Jakarta were built decades ago and are currently in a defective condition. Pipeline network managers must carry out a reactive maintenance strategy by repairing many leaks and rehabilitating defective pipes with limited budgets. The current method of selecting pipes to be rehabilitated does not consider economic aspects and is still subjective. Some of the latest methods from the existing literature have considered economic analysis but are not suitable for conditions of reactive maintenance strategies with limited budgets. For this reason, a new method is proposed by considering the reactive maintenance strategy that is currently implemented and considering budget constraints. The proposed new method is in the form of an optimization model for selecting pipes to be rehabilitated to provide maximum economic benefits with the existing budget constraints. Economic benefits consist of the benefits of reduced leak repair costs and the benefits of increased revenue due to eliminated leaks in rehabilitated pipelines. By applying the optimization model to the selection of pipes to be rehabilitated, it is expected that there will be economic benefits that can increase the rehabilitation budget in subsequent years which will speed up the replacement of defective pipes.
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