Abstract:Gas transmission station is responsible for gas pressurization, transmission and distribution, and its operation safety is related to the operation of the whole system. Studying the hazardous factors and preventive measures of gas transmission station can clearly identify the risk factors hidden in gas transmission station, guide the daily maintenance and management of the station, and achieve the purpose of controlling the occurrence of accidents and ensuring the safety of gas pipelines. In this paper, the comprehensive analysis method combining preliminary hazard analysis with MLS evaluation is used to analyze and summarize various risk factors of gas transmission station, so as to determine the potential risk factors, risk grades and accident severity, and put forward corresponding prevention and control measures.