Fault tree analysis for integrated and probabilistic risk analysis of drinking water systems

Lindhé, Andreas; Rosén, Lars; Norberg, Tommy; Bergstedt, Olof

doi:10.1016/j.watres.2008.12.034

Cited by 112 publications

(58 citation statements)

References 4 publications

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“…They classified the literature based on definition of the system, construction of the fault trees, type of evaluation, and the available computer codes for FTA. FTA has been widely used in environmental applications, such as, risk analysis of drinking water systems, 36 probability assessment of contaminantdischarge from shipwrecks, 37 and analysis of pollution caused by vehicular emissions. 38 In brief, FTA identifies weaknesses in the system and the causes of a failure, assesses proposed design for safety and reliability, quantifies the failure probability, optimizes the management actions.…”

Section: Fault Tree Analysismentioning

confidence: 99%

Techniques for Environmental Risk Assessment: A Review

2017

Rasayan J Chem

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Environmental Risk Assessment (ERA) is a decision-making tool that enables affirmative actions, which lead to a safer environment, optimization of manufacturing processes, reduced business risks, and enhanced profitability. It makes an organization proactive and go beyond the paradigm of compliance to enable sustainability. A wide range of techniques are available in the literature, which can be employed in ERA. In this paper, a review of nine major techniques is presented. These techniques are Leopold matrix, Hazard and Operability study (HAZOP), Knowledgebased HAZOP, Fault Tree Analysis (FTA), Event Tree Analysis (ETA), Process mapping, Failure Mode and Effect Analysis (FMEA), What-if analysis, and Checklists. An outline of the origin, history, evolution, applications, and limitations of these techniques is provided. These techniques help in anticipating environmental hazards and implementing an effective environmental management plan.

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Section: Fault Tree Analysismentioning

confidence: 99%

Techniques for Environmental Risk Assessment: A Review

2017

Rasayan J Chem

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“…However, other types of L-R numbers can be also directly used in our approach. Let us start from the set of the parameters: (15) Other parameters are the same as in Section 3.2.1. It is easily seen from (15), that only the constant and variable costs of repairs and replacements are strictly fuzzy triangular numbers in the considered case.…”

Section: Example IIImentioning

confidence: 99%

“…Both PV c  ( ) and  c rpl are increasing functions of the fuzzy parameters (15). Therefore, to calculate the left end point of the interval PV c…”

Section: Example IIImentioning

confidence: 99%

“…are described by (15) and the crisp parameters are the same as in Section 3.2.1. As previously, to approximate a desired fuzzy outcome, we should check the monotonicity of the considered function for the introduced fuzzy parameters.…”

Section: Example IVmentioning

confidence: 99%

“…The literature devoted to the problems of simulation of the WDS behaviour and to analysis of its reliability is very rich (see, e.g, [3,4,7,10,11,15,17,19,25,29] for a description of various approaches, and [16,28] for a more detailed review of methods and literature). Because of a necessary long-time horizon planning (e.g.…”

Section: Introductionmentioning

confidence: 99%

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On simulation of maintenance costs for water distribution system with fuzzy parameters

Romaniuk

2016

EiN

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Article citation info: (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl IntroductionThe main aim of each water distribution system (WDS, water pipes network) is to deliver water of desirable quality and assumed quantity for customers. In order to meet these requirements, maintenance services, like repairs and replacements of broken or malfunctioned parts, are required.The literature devoted to the problems of simulation of the WDS behaviour and to analysis of its reliability is very rich (see, e.g, [3, 4, 7, 10, 11, 15, 17, 19, 25, 29] for a description of various approaches, and [16,28] for a more detailed review of methods and literature). Because of a necessary long-time horizon planning (e.g. 20 or even 50 years), an influence of a value of the money in the future on maintenance costs should be taken into account. Also such a problem is addressed in many papers.For example, in [20], the main aim is to estimate and validate various cost functions for different types of assets of a WDS, if their hydraulic (e.g., flow, pump head, pump power) and physical characteristics (e.g., volume, material, nominal diameter) are stored in a specially prepared data base. A method of a linear regression is used to model a dependency between various types of the costs (like an equipment cost) and the mentioned characteristics of a pipe (like a nominal diameter) based on data from several Portuguese urban water utilities. However, a method for a calculation of a present value of the total costs is not developed there in a more detailed way.Contrary to the previous paper, in [12], let's say, a "macro-management" approach for a WDS rehabilitation problem with a real long-time horizon is widely discussed. In this paper, both an economics and hydraulic capacity of a WDS is analysed, if a deterioration of a pipe follows the Hazen-Williams equation. The total costs are related RomAniuk m. on simulation of maintenance costs for water distribution system with fuzzy parameters. Eksploatacja i niezawodnoscmaintenance and Reliability 2016; 18 (4): 514-527, http://dx.doi.org/10.17531/ein.2016.4.6. to a rehabilitation of a pipe and some additional maintenance costs (mainly breakage repair costs). To model the breakage rate, the exponential dependency on an age of a pipe is assumed. The present value of the total costs is then calculated using a constant discount rate. The main aim of the whole procedure is to minimize the total costs associated with a rehabilitation, if some hydraulic constraints, necessary for a quality and a quantity of the supplied water, are preserved. As mentioned in this paper, an analysis period for such a procedure is typically equal to 30-60 years.There are also more specialized approaches to the problem of the costs estimation. For example, in [25], an optimisation procedure for a problem of minimising the costs is also described. In this case, the authors express the total cost of a renewal, risk and an unavailability of a WDS as one func...

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Quantitative and Qualitative Models for Managing Risk Interdependencies in Supply Chain

Díaz-Curbelo

Municio

2021

Lecture Notes in Management and Industrial Engineering

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The interdependent nature of supply chain elements and events requires risk systems must be assessed as an interrelated framework to optimize their management and integrate effectively with other decision-making tools in uncertain environments. This research shows a synthesis and analysis of the main qualitative/quantitative methods that have been used in the literature considering the treatment of event dependencies in supply chain risk management in the period 2003-2018. The results revealed that the integration with disruption analysis tools and artificial intelligence methods are the most common types adopted, with increasing trend and effectiveness of Bayesian and fuzzy theory approaches.

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Fault tree analysis for integrated and probabilistic risk analysis of drinking water systems

Cited by 112 publications

References 4 publications

Techniques for Environmental Risk Assessment: A Review

Techniques for Environmental Risk Assessment: A Review

On simulation of maintenance costs for water distribution system with fuzzy parameters

Quantitative and Qualitative Models for Managing Risk Interdependencies in Supply Chain

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