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Authors = Widyo Nugroho ORCID = 0000-0002-3430-8287

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19 pages, 4428 KiB  
Article
A Bayesian Pipe Failure Prediction for Optimizing Pipe Renewal Time in Water Distribution Networks
by Widyo Nugroho, Christiono Utomo and Nur Iriawan
Infrastructures 2022, 7(10), 136; https://doi.org/10.3390/infrastructures7100136 - 13 Oct 2022
Cited by 6 | Viewed by 3261
Abstract
The sustainable management of the water supply system requires methodologies to monitor, repair, or replace the aging infrastructure, but more importantly, it must be able to assess the condition of the networks and predict their behavior over time. Among other infrastructure systems, the [...] Read more.
The sustainable management of the water supply system requires methodologies to monitor, repair, or replace the aging infrastructure, but more importantly, it must be able to assess the condition of the networks and predict their behavior over time. Among other infrastructure systems, the water distribution network is one of the essential civil infrastructure systems; therefore, the effective maintenance and renewal of the infrastructure’s physical assets are essential. This article aims to determine pipe failure prediction to optimize pipe renewal time. This research methodology investigates the most appropriate parameters for predicting pipe failure in the optimization. In particular, the non-homogeneous Poisson process (NHPP) with the Markov chain Monte Carlo (MCMC) approach is presented for Bayesian inference, while maximum likelihood (ML) is applied for frequentist inference as a comparison method. It is concluded that the two estimations are relatively appropriate for predicting failures, but MCMC estimation is closer to the total observed data. Based on life-cycle cost (LCC) analysis, the MCMC estimation generates flatter LCC curves and lower LCC values than the ML estimation, which affects the decision making of optimum pipe renewal in water distribution networks. Full article
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