Evaluation of Maintenance Strategies Based on Leakage Risk Assessment on Side Impervious Walls at Coastal Landfill Sites

Abstract

Asset management is a strategic decision-making aspect of social infrastructure that ensures safety by predicting long-term conditions and maximizing effectiveness under budgetary constraints. Predicting the deterioration of impervious walls is essential in the asset management of coastal landfill sites, particularly in the design of their maintenance and repair strategy. In this paper, a quantitative evaluation of the leakage of toxic substances in coastal landfill sites where deterioration of side impervious walls has decreased the water interception performance is reported. In addition, risk evaluation based on the asset management of the leakage is applied to determine an appropriate repair method. The strategy of repairing the walls when the concentration of the toxic substances leaking into the sea area exceeds the closure and abandonment of coastal landfill sites is demonstrated to be superior. Moreover, the strategy of repairing only the seaside side impervious wall is shown to be cost-effective.

A Risk-Based Multi-Objective Modeling Approach to the Preventive Maintenance Process of Roof Waterproofing System at Airports. (c2020)

“…It starts by assessing and analyzing the equipment downtime, highlighting the consequences of such a problem, and then carrying out an efficient optimization strategy to help solve the situation. So, with the help of several probabilistic tools and algorithms, researchers can reach a positive outcome as presented in several previous articles (Abdulwhab et al, 2010;Dey, 2001;Dinmohammadi, 2019;Inazumi, Sekitani, Chae, & Shishido, 2017;Neves, Frangopol, & Petcherdchoo, 2006;Rivera Torres et al, 2018).…”

“…Despite the importance of waterproofing at airports, managers find it hard to predict leakage and to suppress all of its failures (Inazumi et al, 2017). Moreover, waterproofing failures' consequences are malignant and highly unplanned.…”

“…The research cited here showed that applying risk-based management techniques in this domain could contribute to optimizing and carrying out the best preventive maintenance plan. Eventually, this process would help reduce the unexpected leakage failures and subsequent risk costs, high inspection time expenses, and unplanned maintenance issues, based on the given margin of resources (Inazumi et al, 2017).…”

“…In general, a risk-based maintenance strategy is a technique that analyzes the possible effects of the risks and suppresses them (Inazumi et al, 2017). Moreover, it provides several approaches for an exemplary and efficient maintenance system, not just through understanding the probability of failures, but their consequences as well (Lounis, 2015).…”