Surgutskaya GRES-2 performed the current repairs of Power Units No. 1, 3, 4, and 5 SPU-810MW and Power Units No. 7 CCGT-400MW, No. 8 CCGT-410MW. The works involved metal control and grease replacement. Defects were repaired as necessary. Power Unit No. 2 SPU-810MW was subjected to intermediate maintenance.
The maintenance involved installation of upgraded exhauster rotors, installation of ball catchers and circulating water pre-screens, repair of three high pressure heaters. The generator actuator rotor was replaced on Power Unit No. 4 SPU-810MW as part of Surgutskaya GRES-2 technical refurbishment program. In addition, Surgutskaya GRES-2 Branch completed the overhaul of Power Unit No. 6 SPU-810MW in accordance with the approved schedule. The overhaul involved diagnostics of the turbine, expert examination of the boiler for industrial safety, repair of the generator and auxiliary equipment.
In 2019, Surgutskaya GRES-2 completed the maintenance program for fly-overs on the downstream and upstream ducts and offtake regulators. The carrying capacity restrictions for vehicles were removed. In addition, the plant launched a project providing for the filling of a closure embankment with quarry stone. This was done to improve the safety of waterworks. This year, the plant modernized one and a half kilometers of drinking water pipelines used for in-house needs. In addition, the Branch completed the project providing for the filling of chimney stack No. 1 with a heat insulator and most of similar works on chimney stack No. 2. Overall, completion of the repair program will improve the operating reliability and safety of the power plant equipment.