A set of construction and installation works on the replacement of 7 110 kV oil circuit breakers with SF6 circuit breakers at traction substations of the State Territorial Sectoral Association "Lviv Railways" at the Krasne Station, Velykyi Bereznyi Station, Liubin Velykyi Station, Sudova Vyshnia Station, Staryi Sambir Station, and Beskyd Station.