Rehabilitation of an Industrial Water Main Using Multicriteria Decision Analysis

Water

Dídia Covas¹  Nelson Carriço²  Maria do Céu Almeida³ 

[1] CERIS, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal;ESTBarreiro and INCITE, Polytechnic Institute of Setúbal, 2839-001 Barreiro, Portugal;LNEC, Laboratório Nacional de Engenharia Civil, 1700-075 Lisbon, Portugal;

关键词: condition assessment;    multicriteria decision analysis;    rehabilitation;    urban water systems;   

DOI  :  10.3390/w13223180

来源: DOAJ

【 摘 要 】

This paper demonstrates the application of multicriteria decision analysis (MCDA) methodology in a real case study aiming to choose the best rehabilitation intervention of an industrial water main. This methodology is composed of three main stages: problem identification, structuring, and evaluation. Problem structuring, a crucial stage for the outcomes, includes identifying objectives, selecting scenarios within the analysis period, defining problem alternatives, and defining the problematic type. Problem evaluation includes the selection of assessment metrics, selection of the aggregation method, application of the method, and a sensitivity and robustness analysis. Two scenarios, nine assessment metrics, and seven alternatives are established, and two ranking methods (the additive model and ELECTRE III method) are used to compare the alternatives. The results show that the best solution corresponds to building a new pipe and deactivating the existing one, as it significantly reduces the pipe failure risk and O&M costs, whereas the worst solution is always the status quo case, since it is the only alternative that does not improve the system performance, independently of the ranking method and the analyzed scenario.

【 授权许可】

Unknown