16 August 2025

CHPP-1 is largest energy source and one of the key life support facilities of the Sakhalin. The station supplies electricity to two-thirds of the island, provides heat to largest settlement – the city of Yuzhno-Sakhalinsk, as well as maintains the sustainability of the power grid of the entire region.

The supply of the 4th and 5th gas-turbine power generating units with fuel with the specified parameters in terms of purity, temperature, pressure and flow rate is carried out by the ENERGAS process system – block-type gas treatment station (BGTS) and booster compressor station (BCS) of five two-stage gas compressor units.



In August, this system underwent comprehensive maintenance: BGTS – according to regulations-8000, BCS – according to regulations-4000. Routine works has been carried out by the specialists of ServicENERGAS (part of ENERGAS Group).

The following activities were conducted as planned:

- Replacement of consumables of the compressor units and gas treatment station;
- Change of filtering elements of the separation systems of BCS and BGTS;
- Diagnosis of local automated control systems;
- Correction of the gas flow meters;
- Functional tests of the all utility systems;
- Verification of operational parameters and their adjustment;
- Troubleshooting, drafting recommendations on components replacement.



The maintenance was carried out with sequential switching off of compressor units, what provides non-stop operation of the whole BCS and accordingly power generating units of power plant.

REFERENCE:

The 4th power unit with a capacity of 139.1 MW was put into operation on October 12, 2013. It operates in a cogeneration cycle and provides combined energy generation. GTU-139.1 was created on the basis of three GE gas turbine units of type LM6000 PF Sprint with a capacity of 46.36 MW each and three KUV-50-150 hot-water waste-heat boilers.

The 5th power unit with an electrical capacity of 91.2 MW was put into operation on August 29, 2012. It operates in a simple cycle. The main equipment of GTU-91.2 is two LM6000 PD Sprint gas turbine units with a capacity of 45.58 MW each.

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