Keyword: «gas outflow»

The article presents a model for assessing the potential risk of gas leakage from a gas pipeline under abnormal weather conditions in the North. Based on the results of the analysis of accidents on aboveground and underground sections of gas pipelines, the main causes of gas pipeline accidents have been identified, a “failure tree” of gas leakage has been developed with an assessment of failure rates. The influence of dangerous weather conditions on the process of gas dispersion is substantiated. The frequencies of formation of an explosive cloud of methane gas-air mixture under adverse weather conditions of the North are estimated. The potential and individual risks of accidents of underground and aboveground sections of gas pipelines in the implementation of the scenario – the outflow of gas without instant ignition.