Selection of inhibited preservative materials for corrosion protection of gage parts (level transmitter torque tubes in primary and secondary oil processing units) and experience in application of such materials

• V. V. Burlov, T.P. Parputs and E.A. Tronova

OOO NPO NEPhTEKhIM, ul. Pulkovskaya 10, St. Petersburg, 196158 Russian Federation.

Abstract: The reasons of initiation and development of local corrosion attack which is the most hazardous form of destruction of thin-walled tubes in level transmitters at oil processing units are examined. The protective effect of oil-based preservation materials with respect to nickel and copper-nickel alloys in hydrocarbon media containing chlorides and sulfur compounds has been studied. Laboratory studies and industrial tests have shown that the highest protective effect is provided by M-1 inhibitor at 5 mass% concentration in PES-5 silicone oil. The formulation is successfully used for the protection of torque tubes in liquid level transmitters at primary and secondary oil processing units.

Keywords: corrosion, level transmitter torque tubes, stagnant zones, preservative formulations, M-1 inhibitor, PES-5 silicone oil, nickel and copper-nickel alloys, oil processing environments

Int. J. Corros. Scale Inhib., 2013, 2, no. 3, 231–244 PDF (1 170 K)
doi: 10.17675/2305-6894-2013-2-3-231-244

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