Donbasenergo informs that at 10:23 am on April 15, 2021, the 7th power unit of the Slavyanskaya TPP was connected to the unified power grid of Ukraine.
Repair work at the 7th power unit lasted less than three months. During this period, in particular, the high-pressure cylinder of the turbine was repaired, the high-pressure rotor was replaced with a reserve one, the nozzle apparatus and diaphragms No. 2-8 were replaced.
In addition, a number of low-pressure cylinder assemblies were repaired, and one torn rotor blade of the 43rd stage of the RND-2 was replaced.
As we have already reported, the reason for the emergency increase in the vibration of the turbine unit of power unit No. 7, which occurred on January 17 of this year at SlavTES, was the breakage of a fragment of the shroud of the locking package of rotor blades No. 11 of the regulating stage of the high-pressure cylinder due to erosive and abrasive wear of rotor blades in the zone of their interface with the shroud flange, which was influenced by the presence of a stress concentrator in this zone.
For information: as of 01.04.2021 60.86% of shares of PJSC Donbasenergo belong to the Private Joint Stock Company "ENERGOINVEST HOLDING", 25 % + 1 share - to the state represented by the State Property Fund of Ukraine.
Donbasenergo PJSC unites two power plants: Slavyanskaya and Starobeshevskaya TPPs (the latter has been located on the territory not controlled by Ukraine since 2014). Since March 2017, the performance indicators of assets located in the temporarily occupied territory in the Donetsk region are not included in the consolidated reporting of Donbasenergo due to the loss of control over them.
The total installed capacity of the Slavyanskaya TPP is 880 MW.