Maintenance and repair of steam turbines

• Disassembling, Maintenance, Assembling of HP, IP , LP Turbines
• Inspection of all parts and reachable area of rotor by NDT(UT, PT, MT, Replica, RT) tests ; discs, blades, couplings, bearing seats for finding cracks, lifetime analyse,
• Dimensional and geometrical checks, measurement of clearances,
• Maintenance of main oil pump, tests and adjustments,
• Maintenance and repair of emergency stop, by-pass and regulation valves,
• Dismantling, maintenance, tests (NDT, bonding) and assembling of turbine bearings,
• Blue paint joint check of white metal and journal surface
• Measurement of lubrication clearances
• Stationary and rotating blades&bandages manufacturing and replacement, NDT tests
• Sand blasting of parts cases, blade carrier rings, diaphragms and NDT tests, welding and corrections
• Manufacturing, replacement of labryhints and machining according to clearances
• Replacement of gaskets (hydrogen and oil seals) with new ones
• Blue paint check of inner and outer cases horizontal joint surfaces and corrections if necessary
• Coupling surface and unconcentricity check, honning the holes and line alignments
• Bolts manufacturing, calibration of holes threads
• Assembling, adjustments, alignments and commissioning

Manufacturing of Steam Turbine Parts

Following parts are manufactured by reverse engineering as original ones; • Manufacturing rotationary and stationary blades, bandages, carrier rings,
• Nozzle Manufacturing
• Diaphragms and labyrinths manufacturing
• Shaft manufacturing

Gas Turbines maintenance, rehabilitation and repairs

• Overhauling of turbine and combustion chambers
• Replacement of burners in combustion chambers
• Maintenance and tests of existing burners
• Maintenance and tests of stationary blade rings in turbine
• Dismantling, maintenance, assembling and tests of diffusers
• Dismantling, maintenance repair, assembling and tests of turbine rotor
• Dismantling, cleaning tests and assembling of stationary and rotationary blades of turbine and compressor
• Check of gas lines and maintenance of control valves
• Control and replacement of combustion chamber ceramics
• Maintenance and adjustment of gas and liquid oil stop and regulation valves
• Minor and major overhauls of gas turbines
• Maintenance of air controlers and renew of silencers
• NDT tests of complete rotor, discs, couplings, and other reachable areas (MT, UT, PT, radiographic check), microstructure inspection, surface and inside cracks controls, lifetime analyses
• Diameter measurements of bearing journals, dimentional and geometrical measurement and control of rotor before montage of rotationary blades
• High speed balance and overspeed tests of turbine rotor
• Final machining of new rotor blades after assembling to shaft
• Dismantling the turbine bearings check and maintenance, assembling
• Line alignments
• Replacement of turbine air inlet filters
• Maintenance and teats of compressor blades
• Remedial of rotor shaft bending

Maintenance and repair of hydro turbines

• Maintenance and repair of horizontal and vertical pelton, Francis and kaplan turbines
• Cavitation repair
• Bearings repair, maintenance, remetalling of babbit
• Maintenance and repair of inlet valves
• Maintenance of control oil system, cooling system, filters, governor and regulation system