A hybrid fuzzy MADM model for environmental risk assessment: A case of an oil and gas exploitation area

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NOORI HEDAYAT; Cheraghi Morteza; Eslami Baladeh Aliakbar

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Journal: Journal of Health and Safety at Work Year:2019 | Volume:9 | Issue:3 Page(s): 200-211

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Title

A hybrid fuzzy MADM model for environmental risk assessment: A case of an oil and gas exploitation area

Author(s)

NOORI HEDAYAT | Cheraghi Morteza | Eslami Baladeh Aliakbar | Issue Writer Certificate

Keywords

Environmental AspectQ2

Risk AssessmentQ1

MADMQ2

AHPQ2

Fuzzy LogicQ3

Abstract

Introduction: Evaluating environmental risks in the oil and gas industry is essential to prevent irreparable damage to the environment. Using classical methods for prioritizing environmental risks does not achieve high-reliable results. Therefore, the aim of this study is to minimize the limitations of classical methods in a typical oil and gas production zone, by using Fuzzy Logic and Multi Attribute Decision Making (MADM) approach. Material and Methods: After forming an identification and assessment team including experienced experts from different organizational units in a region of exploitation of oil and gas, values of each risk factor (likelihood of occurrence, severity and detectability) related to identified environmental risks are determined according to their qualitative opinions represented by linguistic variables. Relative weights of the risk factors are calculated by applying the group Analytic Hierarchy Process (AHP) in a fuzzy environment on expert opinions. Then, fuzzy aggregation in the linear form by considering the weight of the risk factors and a method that is developed based on the center of gravity are employed in evaluation and ranking of the risks. Results: In this study, the severity factor has the most important contribution in Risk Assessment compared to the other risk factors, since it has the highest relative weight. Raw sewage aspect resulted from absence of appropriate treatment system has the highest priority and spilling over of acid that is caused by chiller cleaning stands at the second position in the identified environmental risks. Conclusion: The results demonstrate that although the proposed methodology requires greater time than classical methods, it is able to determine the risk ranking more practically because of minimizing the limitations of classical methods: high sensitivity to judgmental errors, considering some risks in the same index group and ignoring uncertainty in experts’ opinions. Proposed method is a proper alternative for classical environmental Risk Assessment technique, and capable of prioritization and evaluation risks in terms of safety and health.

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APA: Copy

NOORI, HEDAYAT, Cheraghi, Morteza, & Eslami Baladeh, Aliakbar. (2019). A hybrid fuzzy MADM model for environmental risk assessment: A case of an oil and gas exploitation area. JOURNAL OF HEALTH AND SAFETY AT WORK, 9(3), 200-211. SID. https://sid.ir/paper/364566/en

Vancouver: Copy

NOORI HEDAYAT, Cheraghi Morteza, Eslami Baladeh Aliakbar. A hybrid fuzzy MADM model for environmental risk assessment: A case of an oil and gas exploitation area. JOURNAL OF HEALTH AND SAFETY AT WORK[Internet]. 2019;9(3):200-211. Available from: https://sid.ir/paper/364566/en

IEEE: Copy

HEDAYAT NOORI, Morteza Cheraghi, and Aliakbar Eslami Baladeh, “A hybrid fuzzy MADM model for environmental risk assessment: A case of an oil and gas exploitation area,” JOURNAL OF HEALTH AND SAFETY AT WORK, vol. 9, no. 3, pp. 200–211, 2019, [Online]. Available: https://sid.ir/paper/364566/en

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