Turbine system with a cover segment for blade mounting region and corresponding mounting method

A system includes a turbine having a turbine rotor (54), a plurality of blades (48), and a segmented cover assembly. The turbine rotor (54) includes a blade mounting region (58) with a plurality of blade mounts (50) disposed circumferentially about a rotational axis (68) of the turbine rotor (54), and first and second grooves (64,66) extending circumferentially along the blade mounting region (58) at a radial offset from one another relative to the rotational axis (68). The plurality of blades (48) is disposed in the plurality of blade mounts (50). The segmented cover assembly includes a plurality of cover segments (74) configured to mount in the first and second grooves (64,66) circumferentially along the blade mounting region (58). Each cover segment (74) includes a cover body (70) and at least one fastener (72). The cover body (74) has first and first and second lips (94,98) extending along first and second circumferential portions (96,100) of the cover body (70), wherein the first lip (94) is configured to mount circumferentially along the first groove (64) and the second lip (98) is configured to mount circumferentially along the second groove (66). The at least one fastener (72) is configured to retain the cover body (70) to the turbine rotor (54) or one of the plurality of blades (48). A corresponding method of mounting the cover segment is als provided