Cooling system for gas turbine load coupling

A gas turbine (33) is described, comprising at least a compressor (43), a power turbine (47), a load coupling (35) connecting said gas turbine (33) to a load (37), a load-coupling guard (65) at least partly surrounding the load coupling (35), a cooling air channeling (51, 61, 63) designed and arranged to circulate a cooling air flow in the load-coupling guard sufficient to remove heat from the load coupling (35).