Risk analysis in transmission pipeline projects in Guilan province with conservation and environmental impact approach

Today, more than 60% of the world’s energy resources are oil and gas. Transportation of crude oil, gas andits products is done in different ways, of which the largest share of transmission is borne by transmissionpipes. Gas transmission projects have always been one of the most environmentally hazardous projects,which necessitates project risk assessment and mitigation as one of the important requirements of the projectteam. In this study, the environmental risks of the gas transmission project in Guilan province have beenstudied. By dividing the project into different activities, it tries to minimize the problem and also identifiesthe project risks through the Delphi method, and then the project risks were assessed and ranked in terms ofrisk using FMEA method. AHP method has also been used to monitor FMEA. The project is divided into 15activities involving 29 risks. Analysis and the results of these two methods have shown that the risks related todrilling and piping activities, destruction of agricultural lands and riverbeds, noise pollution, pollution causedby heavy vehicle traffic, as well as pressure reduction activities at the station are among the priority risks ofthe project. The results of the RPN values obtained from the risks show that 28% of the risks have higher thanaverage RPNs which are within the risk range. Finally, methods for identifying and controlling of the high riskactivities have been presented to reduce the environmental risk of the project. The results also indicate that implementationof these methods can reduce up to 90% of the environmental risks associated with the high risks.