Reliability and vulnerability analyses of critical infrastructures: Comparing two approaches in the context of power systems

Abstract. The paper shows the application of the method of determining critical elements in the networks of technical infrastructures in the search and analysis of the importance of critical gas industry facilities. The purpose of this method is to search for critical elements and sets of elements in network infrastructures and their ranking by importance. The paper presents an adaptation of the method for determining critical elements in networks of technical infrastructures for the model of gas supply system functioning, which consists in describing the response of the gas supply system to the failure of a single element or a group of them. Conclusions are made about the expediency of using this method in research into the search for critical gas industry objects and determining their significance.

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“…The found critical elements or sets of elements can then be studied in more detail using probabilistic methods of risk analysis [10].…”

Section: Definition and Ranking Of Critical Elementsmentioning

confidence: 99%

Search of critically important objects of the gas industry with the method of determining critical elements in networks of technical infrastructures

2017

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“…To a certain extent, this interpretation of vulnerability is similar concept of risk, which is seen as encompassing the estimation of probabilities of risk scenarios and associated negative consequences [19]. However, rather than assessing probabilities and consequences, the focus of analyzing vulnerability is to systematically explore the effects of failures for the purpose of identifying system weakness that may be vulnerable to exploitation by unknown or unimagined threats [20,25]. From this point of view, addressing the vulnerability factors of urban rail transit system involves answering the following question: what factors have the propensity to turn into the weaknesses that resulted in the failure of the system?…”

Section: Vulnerability Factors Of Rail Transit Systemmentioning

confidence: 99%

Using an AHP-ISM Based Method to Study the Vulnerability Factors of Urban Rail Transit System

et al. 2017

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Abstract:As a sustainable means of public transportation, urban rail transit system undergoes rapid expansion in China. How to provide a safe and reliable service has been the subject of growing attention in this context. However, such work is challenging because rail transit systems are quite vulnerable and influenced by a set of interacting factors. Studying these vulnerability factors will contribute significantly to the operation of rail transit system. From this perspective, this paper made an exploration of the vulnerability factors based on an integrated method consisting of AHP (Analytical Hierarchy Process) and ISM (Interpretative Structural Modeling). Based on literature review, 21 vulnerability factors were identified. Subsequently, expert elicitation was employed to ascertain the importance of each factor and the interrelations among them. The results suggest that management and individual factors have the highest importance weights and the interrelations among vulnerability factors could be expressed as a five-layer structure, in which management factors were inclined to be at the lower level. The research provides valuable information for decision makers to take proactive strategies and reinforcement policies to guarantee safety operation of urban rail transit system and ensure urban public safety, which could promote the sustainable development of cities.

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“…Simultaneously, designers give the improvements and apply them on product. Reliability engineers evaluate product's reliability after completing the functional design through reliability analysis [6,12,19], simulation [9,18], test [2,4] etc. The achievement of the requirements would be ensured according to the process.…”

Section: Introductionmentioning

confidence: 99%

A novel logic-based approach for failure modes mitigation control and quantitative system reliability analyses

Yang

Wang

Liu

et al. 2015

Eksploatacja i Niezawodnosc - Maintenance and Reliability

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Reliability and vulnerability analyses of critical infrastructures: Comparing two approaches in the context of power systems

Cited by 158 publications

References 41 publications

Search of critically important objects of the gas industry with the method of determining critical elements in networks of technical infrastructures

Search of critically important objects of the gas industry with the method of determining critical elements in networks of technical infrastructures

Using an AHP-ISM Based Method to Study the Vulnerability Factors of Urban Rail Transit System

A novel logic-based approach for failure modes mitigation control and quantitative system reliability analyses

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