Method and system for safety management of gas charging facility

PURPOSE: A method and system for safely managing a gas charging station are provided to reflect a determined result to repair plans if abnormal generation ability becomes higher by previously determining the possibility of abnormality through a QRA(Quantative Risk Assessment) module. CONSTITUTION: A sensor network(12) includes various kinds of sensors. A monitoring module(131) receives a sensing signal from the sensors. The monitoring module generates a warning signal in which a gas charging station facility informs of an abnormal state. A user interface displays a map, a mapped meter value, and a warning signal on a screen. A QRA module(132) quantifies an external environment change fact to update an accident occurrence probability of each part of the gas station device.