RING SEGMENT DEVICE FOR TURBINE VANES OF A POWER PLANT AND CORRESPONDING GAS TURBINE ASSEMBLY FOR POWER PLANT

A ring segment device (41) for turbine vanes of a power plant turbine assembly having an axis, preferably a gas turbine assembly; the ring segment device comprising: a ring segment (46) having an first face (44) configured for being coupled to the free end (45) of one turbine vane (42) or at least two adjacent turbine vanes; at least a damping pin device (52) housed in a corresponding hole (55) obtained in the ring segment; the damping pin device being configured for coupling the ring segment to the corresponding turbine vane/s in a sprung manner; the ring segment device moreover comprising: a bar (50) arranged between the damping pin device and the turbine vane/s so that the force generated by the damping pin device against the turbine vane/s is not locally concentrated but distributed along the bar.