System for supporting maintenance for gas turbine

The present invention relates to a gas turbine maintenance support system and a control method for the gas turbine maintenance support system. The gas turbine maintenance support system according to an embodiment of the present invention can provide maintenance services appropriate for the attributes of a target gas turbine by utilizing the performance monitoring, performance analysis, cleaning cycle analysis, blade path temperature (BPT) analysis features. The gas turbine maintenance support system includes a DB generation unit; a washing cycle calculation unit; a performance monitoring unit, a performance analysis unit, and a BPT analysis unit.