Prioritizing the risks of Oil Platforms Construction Using Fuzzy TOPSIS Decision-Making Method: A Case Study, oil platform P4

Marine Structures projects, especially the construction of oil platforms, are faced with numerous risks in different stages of design, construction and exploitation, due to factors such as the extent of resources and Uncertainties. Identification and assessment of these risks as one of the most important measures in the risk management process, will have a significant role in better planning of these projects by managers.

In this study, in order to manage the risk of oil platforms project, first, all possible risks in the fields of engineering, executive, environment and passive defense were identified in a library form, and among them,  according to experts’ opinions, 26 risks Were identified as important and effective risks on the project. Finally, to assess and prioritize the risks, multi-criteria decision-making models were used in the fuzzy mathematics environment.

In this regard, after setting the questionnaire to test the hypotheses of the research, relying on experts’ opinions, identified risks were ranked by TOPSIS model in fuzzy environment.

Survey of the resulting rankings shows that the option of incorrect design due to defect in geotechnical studies in the field of engineering,  the option of stopping executive operations due to lack of supply of providing necessary materials and equipment due to the sanctions in the Executive field, the option of arson and explosion in the field of passive defense and the option of sea water pollution in the field of environment as the most important risks affecting in each of the four areas of the project are studied.