In 2019, Transneft Diascan’s Diagnostics Directorate has inspected 558 tanks for oil and petroleum products storage. The diagnostics were performed as part of Transneft’s annual integrated programme of diagnostic examination of pipelines and PS (oil pumping stations) facilities for 2017.
Full technical diagnostics with decommissioning was performed at 78 tanks; partial technical diagnostics without decommissioning was performed at 141 tanks.
339 additional inspections of tanks were performed: monitoring of tanks (49 pcs), control of technical condition of aluminium dome-shaped roofs of vertical steel tanks (16 pcs), control of the condition of external and internal anticorrosive coating (125 pcs), additional flaw-detection inspection (x-ray examination) of welded joints between the third and the fourth belts of tank wall (82 pcs). The inspection was conducted using ultrasonic, acoustic emission and industrial radiography methods.
The bulk of the works were conducted at the facilities of Transneft Siberia (75 tanks), Transneft Volga Region (69 tanks), Transneft Western Siberia (55 tanks), Transneft Kama Region (54 tanks) and Transneft East (53 tanks).
Moreover, 793 units of additional equipment used at oil and petroleum products trunk pipelines were inspected by Transneft Diascan in 2019. Diagnostics of 2,552 mechanical and process equipment units and 300 automation and pipeline telemetry systems were performed as well. 120,5 km of pipelines were inspected, full technical diagnostics was performed at 25,5 km of oil trunk pipeline (OTP) and PS lines.
The diagnostics were performed both using the Company’s own resources and with involvement of subcontracting organisations. As a result of the inspection, the condition of the examined facilities can be recognised satisfactory. The detected defects will be eliminated during scheduled repairs.