Preferential corrosion

Citation

(2000), "Preferential corrosion", Anti-Corrosion Methods and Materials, Vol. 47 No. 1. https://doi.org/10.1108/acmm.2000.12847aab.010

Preferential corrosion

Keywords Corrosion, Welding

In the 1980s, galvanic corrosion of weldmetal in seawater injection lines was overcome by using consumables with small additions of nickel or nickel with copper. However, in the past year, production facilities in the UK sector of the North Sea and, more recently, the Gulf of Mexico, have suffered significant unplanned maintenance costs. This is due to preferential corrosion of welds and localised attack in tees, valves and flowlines in CO²-containing production environments. It is not possible to predict occurrence or rate of attack.

If your company is encountering corrosion problems of this kind, it is suggested that you contact Stuart Bond at the TWI (e-mail: sbond@twi.co.uk).