Transneft Volga Region has completed technical upgrading and commissioned two tanks, each with a volume of 10 thousand m3, at the Krotovka line operation dispatcher station (LODS) in Samara Region.
The technical upgrading of the vertical floating-roof tanks (VFRTs) No. 12 and 13 began in July 2019 in accordance with the technical upgrading, revamping and overhaul programme. The goal was to increase the industrial and environmental safety of the company's operating facilities.
Specialists replaced sections of the wall and the bottom of the tanks. For this purpose, materials with increased wear resistance and strength with a total weight of more than 15 tonnes were used. Anti-corrosion coating was applied to the tanks. The tanks were equipped with a complete set of equipment: a device for breaking apart bottom sediments, an automation and telemechanics system, and a firefighting and water-cooling system to ensure its uninterrupted operation. The protection of the tanks and process equipment from corrosion is provided by a cathodic protection station and anode beds.
The VFRTs passed visual and instrumental control, X-ray and ultrasonic testing, as well as tests by the hydrostatic load method during 48 hours.
The tanks and the fire extinguishing and water-cooling systems were commissioned on schedule after successful hydraulic testing and checking operability of the systems. The tanks commissioning will ensure the reliability and safety of oil storage at the Krotovka LODS.