Using fault tree analysis in the Al-Ahmadi town gas leak incidents

Alkhaledi, Khaled; Alrushaid, Sami; Almansouri, Jasem; Alrashed, Ahmed

doi:10.1016/j.ssci.2015.05.015

Cited by 28 publications

(13 citation statements)

References 11 publications

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“…Combined with the interpretation for Figure 5 in Section 5.2, it is known that in scenario (2) after the leak point is altered, the pressure in the leak pipeline section is increased, which is similar to scenario (4). It can be deduced that pressure increase will affect valve closing since water hammer results in a pressure increase in the pipeline, which is prone to overpressure, especially when the pipeline is under higher pressure.…”

Section: Exploration For Model Influence Factorsmentioning

confidence: 71%

“…Pipelines have become the main way of liquid transportation because of their advantages in economy and transportation capacity [1]. However, during the long-term operation of pipelines, they inevitably leak due to corrosion, third-party destruction and natural disasters, causing environmental contamination, fires or explosions if measures are not taken in a timely way [2][3][4]. In addition to the research on leak detection and hydraulic simulation, the control of hydraulic equipment is also critical to reducing leak volume.…”

Section: Introductionmentioning

confidence: 99%

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Study on Optimization of Active Control Schemes for Considering Transient Processes in the Case of Pipeline Leakage

Zhang

Shen

et al. 2020

Energies

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Pipeline leakage of crude oil, refined oil or other petroleum derivatives can cause serious damage to the environment, soil, and more importantly, pose a serious threat to personal safety. The losses can be minimized to a degree by active control. Therefore, timely and effective control measures should be taken to minimize the leak volume whenever a pipeline leaks. However, the complexity of pipeline hydraulic systems makes it difficult to optimize control schemes for pipeline hydraulic devices under leak conditions, and existing studies rarely consider complex transient processes. This paper aims to establish a mixed integer linear programming model considering transient processes, hydraulic constraints, equipment constraints and flow constraints, and develop a detailed control scheme of the devices by the branch and bound algorithm. Moreover, it is the objective of the model to figure out the most optimal control plan to minimize the leakage. Experiments on a real-world liquid pipeline have proved the practicability and high reliability of the model.

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Section: Exploration For Model Influence Factorsmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Study on Optimization of Active Control Schemes for Considering Transient Processes in the Case of Pipeline Leakage

Zhang

Shen

et al. 2020

Energies

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“…The severity of VCE is closely related to factors such as the chemical properties of the leaked fluid, release mode, time, and the amount of hydrocarbons involved (Koshy et al 1995). It was found (Fingas 1997(Fingas , 1998Alkhaledi et al 2015) that most types of oil evaporated at a logarithmic rate as a function of time, which was attributed to the overall logarithmic function of the oil components evaporating at different rates. The dense vapor dispersion under very low wind speed conditions can lead to VCE that causes serious casualties (BMIIB 2006;Johnson 2010;Hailwood et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Modeling and analysis of a catastrophic oil spill and vapor cloud explosion in a confined space upon oil pipeline leaking

et al. 2019

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Oil spill-induced vapor cloud explosions in a confined space can cause catastrophic consequences. In this work, investigation was conducted on the catastrophic pipeline leak, oil spill, and the resulting vapor cloud explosion accident occurring in China in 2013 by modeling analysis, field surveys, and numerical simulations. The total amount of the spilled oil was up to 2044.4 m 3 due to improper disposal. The long residence time of the oil remaining in a confined space permitted the formation of explosive mixtures and caused the vapor cloud explosion. A numerical model was developed to estimate the consequence of the explosion based on volatilization testing results. The results show that the death-leading zone and the glass-breaking zone could be 18 m and 92 m, respectively, which are consistent with the field investigation. The severity of the explosion is related to the amount of the oil spill, properties of oil, and volatilization time. It is recommended that a comprehensive risk assessment be conducted to analyze the possible consequences upon oil spilling into a confined space. Prompt collection and ventilation measures should be taken immediately after the spill occurs to reduce the time for oil volatilization and prevent the mixture from reaching its explosive limit.

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“…It should be noted that the mostly used oil and gas transportation mode is the underground pipe system. Alkhaledi et al [3] presented gas leak detection system called fault tree analysis and this technique identifies the exact point of leakage. Elaoud et al [4] developed an oil leakage detection technique which is based on transient negative pressure waves.…”

Section: Introductionmentioning

confidence: 99%

Development and Testing of Intelligent Alcohol Transportation Security System

Msomi

Solomons

2018

Journal of Advanced Transportation

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The development and testing of intelligent liquid transportation security system are being reported in this paper. The targeted fluid to be secured was ethanol alcohol and this was due to the theft cases occurring during the transportation of this product from the supplier to the customer. The system was developed such that only the radar level sensor (VEGAPULS 62) might be in contact with the fluid and the rest of the system remained outside the liquid carrying container to be secured. The system was developed such that it reports any abnormal liquid level drop through short message service (SMS). The functioning of the developed system was tested through the use of 1040 L Intermediate Bulk Container (IBC) filled with water which was hauled for about 1.5 km. The liquid theft was simulated and the system sent two SMS. The first SMS reported the beginning of water level drop and the second one reported the ending of water level drop. The second SMS reported the amount of liquid that was taken out of the container.

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Using fault tree analysis in the Al-Ahmadi town gas leak incidents

Cited by 28 publications

References 11 publications

Study on Optimization of Active Control Schemes for Considering Transient Processes in the Case of Pipeline Leakage

Study on Optimization of Active Control Schemes for Considering Transient Processes in the Case of Pipeline Leakage

Modeling and analysis of a catastrophic oil spill and vapor cloud explosion in a confined space upon oil pipeline leaking

Development and Testing of Intelligent Alcohol Transportation Security System

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