A risk component-based model to determine pipes renewal strategies in water distribution networks

Abstract

Among the main concerns of water companies is to maintain the optimal performance of pipes in Water Distribution Networks (WDNs); this is achieved by activities such as renewal works, maintenance actions, pressure management, and other improvement operations. Accordingly, determining the risk associated with pipes is useful when planning such renewal works. In this study, a model is developed to determine a Pipe Renewal Strategy (PRS) based on the Risk Components (RCs) of each pipe. Hence, comprehensive criteria relating to pipe characteristics are assessed to determine the RCs. The developed model is based on a fuzzybased, multi-criteria decision-making method, known as RC-WDSR (Risk Component-based Water Distribution System Rehabilitation). This is an improved version of the WDSR model, which was presented in 2018 by the authors of this study. To investigate the accuracy of the analysis of this model, two known WDNs -Anytown and Two-loop -were examined. The results indicate that the PRSs determined for the Anytown network reflects the pipe renewal priorities obtained from the WDSR model. Furthermore, in the Two-loop network, the PRSs obtained corresponded with the technical conditions of the pipes. Hence, it reveals that the results of the RC-WDSR are reliable when determining PRSs in WDNs.

Water Supply Network Renewal Strategic Planning Utilizing the VIKOR Method

“…Subsequently Salehi et al (2020) [24] further classified these technical and non-technical criteria into eight distinct categories: Mechanical Criteria, Operational Criteria, Environmental Criteria, Economic Criteria, Hydraulic Criteria, Social Criteria, Physical Criteria, and Qualitative Criteria. This categorization resulted in a total of 48 criteria.…”

Water infrastructure asset management: state of the art and emerging research themes

“…The research proposals from 1 to 7 linked to these directions are detailed in the following sections. (Salehi et al, 2021) Probabilisation of interactions between IAM of interdependent infrastructures (Daulat et al, 2022) (Mazumder et al, 2018) Table 1. Validation, based on the literature, of the relevance of the research proposals related to the theme "Temporal and spatial dimensions of WIAM and their consistency"…”

Identification of priority areas for rehabilitation in wastewater systems using ENTROPY, ELECTRE and TOPSIS

“…They stated that use of an advanced method like ELECTRE reduced some uncertainties in SSD site selection and that this developed methodology could be used as a basis for more detailed field investigations. On the other hand, various literature studies have been carried out on infrastructure management and rehabilitation, such as water distribution pipe renewal based on seismic risk (Youn et al 2021), risk-based pipe renewal strategies (Salehi et al 2021;Sufian et al 2021), pipe replacement scheduling based on optimization algorithm and modeling methods (Salehi et al 2018;Kerwin & Adey 2020;Wu & Abdul-Nour 2020;Zangenehmadar et al 2020;Dell'Aira et al 2021;Ghobadi et al 2021).…”