According maintenance plan of turbine producer after 60000operation hours main overhaul of the turbine set should be done. Thescope of activities includes inspection service activities on next maincomponents:1. Steam turbine model H2L/ V36UB including casing, rotor,bearings, valves, turbine foundation (between turbine and oil tankplus spring suspection between oil tank and concrete foundation),piping, ESV, Control valve and Main steam shut off valve;2. Couplings and the gearbox type TX 80 / 5 C3. Auxiliary systems for lubrication oil including all pumps, oiltank, oil coolers, filters, pipelines, shut-off fittings, valves and orifices;4. Control oil system including all control pipelines, shut-offfittings, other system fixtures and valves and orifices;5. Instrument and compressed air system of steam system;6. Drain system including all pipelines, shut-off fittings, othersystem fixtures and valves and orifices;7. Gland steam system all pipelines, shut-off fittings, othersystem fixtures, valves, orifices, air fans, filters and heat exchangers;8. Steam turbine installation package including internalelectrical systems.9. Process automation system for the steam turbine installationunit inclusive of the safety system10. Electrical generator type AMS 1000LM up to the outletterminals including exciter, PMG and all of their auxiliary components;11. Generator auxiliary systems- remote control of Generator,,cooling system including all units, fittings and exchangers.