Verification method for an oxygen reduction system

A verification method (200) for verifying system functions (110, 111, 112, 113, 114) of an oxygen reduction system (100), said functions being used during the operation of the oxygen reduction system (100), wherein the oxygen reduction system (100) reduces or maintains an oxygen concentration level in at least one protection region (121) by supplying inert gas (131) originating from at least one inert gas source (130) and to monitor or increase the oxygen concentration level in the at least one protection region (121) or in a monitoring region (122), which has the following method steps:

• detecting (201) system functions (110, 111, 112, 113, 114) being used during the operation of the oxygen reduction system (100),
• generating (202) a license data set (210), wherein the license data set (210) contains licenses (I1y, I2y . . . , Iny) used by the system functions (110, 111, 112, 113, 114) being used,
• reading (203) a verification data set (220) provided on a storage medium (340), wherein the verification data set (220) contains at least one existing license (L1x, L2x . . . Lnx),
• determining (204) a license violation if each license (I1y, I2y, . . . , Iny) used is not contained in the verification data set (220);
• and
• outputting (205) a message or deactivating (206) at least one system function (110, 111, 112, 113, 114) if a license violation is detected.