The head of the Stavropol power supply distance of the North Caucasian railway, P.P. Popov, and the fitters are conducting preventive inspection and repair of the equipment of transformer substations at railway crossings. Employees of the testing laboratory of the repair and revision section of the distance carry out high voltage tests of the cable. Instructing the fitters before starting electrical work. Fitters are repairing signaling and communication devices located on the territory adjacent to the railway. Electrician check of voltage, installation of grounding.