Criticality and threat analysis on utility tunnels for planning security policies of utilities in urban underground space

Canto-Perello, Julian; Curiel-Esparza, Jorge; Calvo, Vicente

doi:10.1016/j.eswa.2013.02.031

Cited by 88 publications

(34 citation statements)

References 45 publications

(36 reference statements)

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“…Among the different city lifelines established in the utility tunnel, the natural gas pipeline is considered to be have catastrophic potential consequences if a gas leakage and subsequent explosion occurs [4,5]. In the past few years, there have been some catastrophic urban gas pipeline accidents.…”

Section: Introductionmentioning

confidence: 99%

“…However, few studies have analyzed gas pipeline accidents in utility tunnels. A few attempts have studied the impacts of crustal movement (e.g., earthquakes) on utility tunnel structures [16,17], analyzed fire smoke temperature distributions in a utility tunnel under different fire conditions [18,19], and identified preliminary critical threats of utility tunnel structures (but for utility tunnel accidents) [4,8,20]. At present, research work on comprehensive risk analyses of gas pipeline accidents in a utility tunnel (i.e., critical hazards identification, assessment of safety measures, and consequence analysis) is scarce.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative risk assessment of a natural gas pipeline in an underground utility tunnel

Fang

Bai

et al. 2019

Process Safety Progress

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With rapid urbanization in China, many underground utility tunnels have been established these years. This huge underground construction facilitates city life, but may introduce societal risks due to the installation of high-risk pipelines. Natural gas pipelines have the potential to cause catastrophic accident if a gas leakage and a subsequent explosion occurs. The potential hazards in the gas compartments of a utility tunnel are quite different from those in conventional directly buried gas pipelines. This study developed a dynamic quantitative risk analysis method for natural gas pipelines in a utility tunnel. First, potential accident scenarios of natural gas pipelines situated in a utility tunnel were identified and implemented in a Bow-tie diagram based on case studies of typical gas pipeline accidents and expert experience. Then, a Bayesian network was established from the Bow-tie diagram using a mapping algorithm. Based on a comprehensive analysis of the results of probability updating and sensitivity analysis, critical influencing factors were identified. The proposed framework provides a predictive analysis of the gas pipeline accident evolution process from causes to consequences and examines key challenges in gas pipeline risk management in utility tunnels.where P (NM) is the probability of "Near Miss", P (VS-good) represents the probability of good "Ventilation System", and P (VS-poor) indicates the Probability of poor "Ventilation System".

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantitative risk assessment of a natural gas pipeline in an underground utility tunnel

Fang

Bai

et al. 2019

Process Safety Progress

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show abstract

“…To find this priority vector, the linear system Aω = λ ω must be solved [37], and hence det[A − λ·I] = 0 must be calculated. The involvement of experts may be affected by bias, misinterpretation and self-perception in general that could lead to inconsistencies in decision-making [38]. The Saaty's AHP methodology allows the evaluation of the consistency of the pairwise comparison matrix by obtaining an index called consistency ratio (CR).…”

Section: Pairwise Comparison Of Elements Of the Hierarchical Structurmentioning

confidence: 99%

Selecting a Sustainable Disinfection Technique for Wastewater Reuse Projects

Curiel-Esparza

Cuenca-Ruiz

Martin-Utrillas

et al. 2014

Water

Self Cite

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This paper presents an application of the Analytical Hierarchy Process (AHP) by integrating a Delphi process for selecting the best sustainable disinfection technique for wastewater reuse projects. The proposed methodology provides project managers a tool to evaluate problems with multiple criteria and multiple alternatives which involve non-commeasurable decision criteria, with expert opinions playing a major role in the selection of these treatment technologies. Five disinfection techniques for wastewater reuse have been evaluated for each of the nine criteria weighted according to the opinions of consulted experts. Finally, the VIKOR method has been applied to determine a compromise solution, and to establish the stability of the results. Therefore, the expert system proposed to select the optimal disinfection alternative is a hybrid method combining the AHP with the Delphi method and the VIKOR technique, which is shown to be appropriate in realistic scenarios where multiple stakeholders are involved in the selection of a sustainable disinfection technique for wastewater reuse projects.

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“…On the other hand, for setting risk countermeasure, eliminating and reducing the adverse influence of risk, many ways of risk evaluation and prediction about mud-water burst in fractured rock masses were raised to disclose potential risk factors [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Mud-Water Inrush Characteristics through Rock Fractures

Zhao

Zhang

2018

Advances in Civil Engineering

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Fractured rock masses, which are widely distributed in the south of China, have an impartible relationship with mud-water inrush. In order to study the change laws of mud viscosity under different moisture content, flow property, and mechanism of mud-water inrush in fractured rock masses, a NDJ-8S rotary viscometer and a simulation model are used to carry out a series of experimental studies. Tests of mud viscosity show that mud viscosity depends on moisture content, and the relationship between viscosity and moisture content was proposed. Based on mud viscosity results, physical model tests' results indicated that the process of mudwater rush can be divided into four stages: that is, the preparation stage of mud-water mixture burst, the seepage period of mudwater mixture inrush, the nonstable period of mud-water mixture outburst, and the stable period of mud-water mixture outburst. e excavation disturbance, high water pressure, and effect of erosion and corrosion of water were identified as key factors which lead to mud-water inrush in fractured rock masses

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Criticality and threat analysis on utility tunnels for planning security policies of utilities in urban underground space

Cited by 88 publications

References 45 publications

Quantitative risk assessment of a natural gas pipeline in an underground utility tunnel

Quantitative risk assessment of a natural gas pipeline in an underground utility tunnel

Selecting a Sustainable Disinfection Technique for Wastewater Reuse Projects

Experimental Study on the Mud-Water Inrush Characteristics through Rock Fractures

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