Performance Indicators and Multicriteria Decision Support for Sewer Asset Management

Gauffre, P. Le; Joannis, Claude; Vasconcelos, Elisio; Breysse, Denys; Gibello, Claire; Desmulliez, Jean-Jacques

doi:10.1061/(asce)1076-0342(2007)13:2(105)

Cited by 47 publications

(22 citation statements)

References 10 publications

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“…In order to maintain the desired level of serviceability the infrastructure has to be properly maintained and rehabilitated [1,2]. Two important parts of the infrastructure for human wellbeing are water supply networks and sewer systems.…”

Section: Introductionmentioning

confidence: 99%

Identifying Critical Elements in Sewer Networks Using Graph-Theory

Meijer

Bijnen

Langeveld

et al. 2018

Water

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Underground water infrastructure is essential for life in cities. The aging of these infrastructures requires maintenance strategies to maintain a minimum service level. Not all elements are equally important for the functioning of the infrastructure as a whole. Identifying the most critical elements in a network is crucial for formulating asset management strategies. The graph theory is presented as a means to identify the most critical elements in a network with respect to malfunctioning of the system as a whole. As opposed to conventional methods, the proposed method does not rely on iterative hydraulic calculations; instead, the structure of the network is taken as a starting point. In contrast to methods applied in practise, the results are independent on the chosen test-load. Because of the limited calculation effort, the method allows the analysis of large networks that are now, for practical reasons, beyond the scope of methods applied so-far.

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Section: Introductionmentioning

confidence: 99%

Identifying Critical Elements in Sewer Networks Using Graph-Theory

Meijer

Bijnen

Langeveld

et al. 2018

Water

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“…This has led to the development of proactive management strategies where work is prioritised based on both the estimated sewer condition and the consequences of a failure (Le Gauffre et al, 2007;Wirahadikusumah, Abraham, & Iseley, 2001). Although these proactive strategies are increasingly applied to main sewers, the lateral sewers transporting sewage from properties to main sewers (schematised in Figure 1) are generally subject to repair only after an incident occurs.…”

Section: Introductionmentioning

confidence: 99%

Analysing spatial patterns in lateral house connection blockages to support management strategies

Post

Langeveld

Clemens

2016

Structure and Infrastructure Engineering

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a faculty of civil engineering and geosciences, Section Sanitary engineering, delft university of technology, delft, the netherlands; b Partners4urbanwater, nijmegen, the netherlands; c deltares, delft, the netherlands ABSTRACTThe performance of lateral house connections has a direct impact on sewer serviceability. Despite the potential consequences of a blockage, these components are generally maintained with a reactive approach. As inspection data on the condition of lateral house connections are scarce, this study adopts a statistical procedure to support proactive strategies by analysing spatial blockage patterns to identify system parts with higher blockage incidences. First, a Monte Carlo simulation test provides insight into whether the spatial variation of the blockage likelihood is significant. This justifies the identification of explanatory factors by means of a bootstrapped generalised additive model. Application of the procedure to two databases containing 10 years of lateral house connection blockage data, revealed factors such as building age, sewer system type and ground settlement rate to explain spatial differences in the blockage likelihood. Furthermore, a likelihood ratio test demonstrated that the addition of a spatial smoother improved model performance. This smoother was able to account for additional spatial variation caused by explaining factors for which no data were available. The procedure provides key information for inspection and rehabilitation strategies by taking into account the model performance in assessing the trade-off between costs and benefits in terms of serviceability.

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“…Digman et al 2006;Hall et al 2007;Lems et al 2006;Martin et al 2001;Woods Ballard and Kellagher 2007), performance indicators and methods dedicated to specific elements of the system (e.g. Kennedy et al 2007;Le Gauffre et al 2007;Moura et al 2011;Saegrov 2006;Taylor, Fletcher, and Peljo 2006;Thévenot 2008). However, there remains a lack for decision support method dedicated to the whole system design and decision-making based on multiple objectives.…”

Section: Introductionmentioning

confidence: 99%

Transitioning to sustainable urban water management systems: how to define expected service functions?

Belmeziti

Cherqui

Tourne

et al. 2015

Civil Engineering and Environmental Systems

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Sustainable water management is a worldwide challenge for the twenty-first century. It involves replacing traditional management approaches with a new concept, often referred to as sustainable urban water management (SUWM). This paradigm shift means that SUWM systems must include new services, some of which have already emerged. However, no publications have presented the expected SUWM system in terms of the full range of services it would need to include, and no publications have proposed a method for identifying the services the system must provide. This paper proposes a method for identifying these services and presents a generic petal diagram to represent the service functions of the SUWM system. Moreover, this paper presents a new method for defining these services in a specific territory. This method is based on the confrontation between a general representation and the objectives of the stakeholders in a given system in a given territory. The method is illustrated with a full-scale case study on the Doua eco-campus (Lyon University). This method is intended to aid practitioners to manage its system and to transition to SUWM. It is designed to improve the transparency of decision formulation and to involve stakeholders in the process.

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Performance Indicators and Multicriteria Decision Support for Sewer Asset Management

Cited by 47 publications

References 10 publications

Identifying Critical Elements in Sewer Networks Using Graph-Theory

Identifying Critical Elements in Sewer Networks Using Graph-Theory

Analysing spatial patterns in lateral house connection blockages to support management strategies

Transitioning to sustainable urban water management systems: how to define expected service functions?

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