Keyword: «fuzzy logic system»

The development of emergency situations on main pipelines running in the permafrost zone is affected by the loss of stability due to uneven freezing and thawing of rocks, the formation of heaving mounds, the displacement of the pipeline axis from the design position, the formation of ice along the route, pipeline rupture due to operating errors, defects equipment, corrosion, etc. The calculation of a risk score is often difficult due to the large number of uncertainties in the data used and available. The most effective and satisfactory assessment in terms of accuracy can be achieved with a combination of qualitative and quantitative methods – fuzzy models that combine qualitative expert knowledge and quantitative statistical methods.