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Khakzad, Sina (author), Yang, M. (author), Lohi, Ali (author), Khakzad, N. (author)Oil and gas pipelines play a key role in the safe and efficient delivery of energy resources around the world. Crude oil by itself is not corrosive, but oil extracted from geological reservoirs is accompanied by varying amounts of water and acidic gases such as carbon dioxide (CO2), which can form a corrosive combination. Estimating the...journal article 2022
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Zinetullina, Altyngul (author), Yang, M. (author), Khakzad, Nima (author), Golman, Boris (author), Li, Xinhong (author)The emergent hazards of chemical process systems cannot be wholly identified and are highly uncertain due to the complicated technical-human-organizational interactions. Under uncertain and unpredictable circumstances, resilience becomes an essential property of a chemical process system that helps it better adapt to disruptions and restore...journal article 2021
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Abrishami, S. (author), Khakzad, Nima (author), Hosseini, Seyed Mahmoud (author)Bayesian Network (BN) has been increasingly exploited to improve different aspects of Human Reliability Analysis (HRA), resulting in a new generation of HRA techniques, known as BN-HRA models. However, validating and evaluating the accuracy of BN-HRA models is still a challenging task. In this study, we have assessed and compared the...journal article 2020
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Chen, C. (author), Reniers, G.L.L.M.E. (author), Khakzad, Nima (author)In the chemical industry, multi-hazard (toxic, flammable, and explosive) materials such as acrylonitrile are stored, transported, and processed in large quantities. A release of multi-hazard materials can simultaneously or sequentially lead to acute toxicity, fire and explosion. The spatial-temporal evolution of hazards may also result in...journal article 2020
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Cheraghi, Morteza (author), Eslami Baladeh, Aliakbar (author), Khakzad, N. (author)Hazard and Operability analysis (HAZOP) is a popular technique for hazard identification and risk ranking in hazardous facilities. Conventional HAZOP, however, has some drawbacks: (i) it considers a limited number of risk factors, i.e., only the frequency and the severity of hazards; (ii) it assumes equal weights for the risk factors, thus...journal article 2019
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Khakzad, N. (author)System safety and reliability assessment relies on historical data and experts opinion for estimating the required failure probabilities. When data comes from different sources, be it different databases or subject domain experts, the estimation of accurate probabilities would be very challenging, if not impossible, and subject to high epistemic...journal article 2019
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Naderpour, Mohsen (author), Khakzad, N. (author)On February 2007, a massive fire in a propane de-asphalting unit in an oil refinery in Texas, USA happened due to liquid propane release from a cracked pipe in a control station injuring four people, damaging extensive equipment, causing significant business interruption, and resulting in more than $50 million losses. The accident was...journal article 2018
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Khakzad, N. (author), Landucci, G. (author), Reniers, G.L.L.M.E. (author)The propagation of fire in chemical plants – also known as fire domino effects - largely depends on the performance of add-on passive and active protection systems such as sprinkler systems, water deluge systems, emergency shut down and emergency blow down systems, fireproofing, and emergency response. Although such safety barriers are widely...journal article 2017
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Fakhravar, D. (author), Khakzad, N. (author), Reniers, G.L.L.M.E. (author), Cozzani, Valerio (author)Security of chemical and oil & gas facilities became a pressing issue after the terrorist attacks of 9/11, due to relevant quantities of hazardous substances that may be present in these sites. Oil & gas pipelines, connecting such facilities, might be potential targets for intentional attacks. The majority of methods addressing pipeline...journal article 2017
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Khakzad, N. (author), Landucci, G (author), Reniers, G.L.L.M.E. (author)In the present study, we have introduced a methodology based on graph theory and multicriteria decision analysis for cost-effective fire protection of chemical plants subject to fire-induced domino effects. By modeling domino effects in chemical plants as a directed graph, the graph centrality measures such as out-closeness and betweenness...journal article 2016