Evaluation of anticorrosive coatings for tanker walls to transport oil in a high salinity environment, in the presence of tension,temperature and CO2

Abstract

The offshore heavy oil project uses Floating Production, Storage and Offloading (FPSO) structural tanks to act as oil separators (washing tanks) a vital requirement. These tanks operate with a continuous layer of  produced water at high operational temperatures and high residence time, creating a critical corrosive  environment. This condition is far beyond typical conditions for tankers and makes the development of a  special test necessary to qualify paint systems for that condition. Traditionally the qualification of paint  systems in Brazil offshore units is based on NACE TM-0104 and ISO 20340 standards. But these standards have a test protocol based on physical/mechanical tests and corrosion tests. However, for this specific case, it did not suffice. Thus, a specific test was developed for washing tanks, which can evaluate simultaneously  both corrosion and mechanical properties. This paper presents the development of a new test to simulate  the behavior of paint systems submitted to cyclic tension in coatings in very corrosive environments (high  salinity, CO2, and high temperature).


Reference
ALMEIDA,N.L.; BERNAL A.A.G.; SOLYMOSSY V.;SERRA F.A.S.; QUINTELA J.P.Q. Evaluation of anticorrosive coatings for tanker walls to transport oil in a high salinity environment, in the presence of tension, temperature and CO². In: NACE CORROSION INTERNATIONAL CONFERENCE, 2010, San Antonio/Texas, 2010. Proceedings… / e / In: CONGRESSO BRASILEIRO DE CORROSÃO, INTERCORR, 30., 2010, Salvador, 2010, Salvador. Anais…Fortaleza: ABRACO, 2010