In a safety operation for LP gas, a safety inspector selects an inspection slip and determines whether an inspection item is necessary depending on the facility. Therefore, mistakes and omissions in the inspection content occur, and problems occur, such as visiting the actual site again to perform re-inspection. Furthermore, inspection slips that were manually filled are taken back to his or her office to input into a PC. Therefore, problems occur such as increases in workload due to erroneous entry of data and data re-entry, and time lags until inspection results are reflected in the safety management system. By reading a two-dimensional code attached to the main body of LP gas supply facility and consumption facility, the inspection slip (inspection items) related to each safety operation is downloaded to a mobile terminal in real-time at the operating sites, and inspection results are aggregated on a server by data communication.