aluminum alloy corrosion of tank inner floating roof
aluminum alloy corrosion of tank inner floating roof
(OP)
Dear All,
Appreciate if anyone may have experience with aluminum alloy corrosion of the support legs and sheeting of an inner floating roof tank. The aluminum alloy is 6063 and the medium stored in the tank is platformate to be used in gasoline blending.
Thanks
Appreciate if anyone may have experience with aluminum alloy corrosion of the support legs and sheeting of an inner floating roof tank. The aluminum alloy is 6063 and the medium stored in the tank is platformate to be used in gasoline blending.
Thanks





RE: aluminum alloy corrosion of tank inner floating roof
RE: aluminum alloy corrosion of tank inner floating roof
This aluminum inner floating cover was installed in 2001 by the company TAISA, for a storage tank of Platformate at ambinent temperature (`30 deg C). The tank has one mixer,and the main damage (partial floating cover collapse) was at the area of the mixer. Thinning of the sheeting (alloy 3003 H14)was observed, and some pontoons were filled with liquid. Corrosion was also observed on some of the legs (see attached picture) and the material was confrimed to be alloy 6063 T5. Tank is not equippped with an auto minimum level stop for the mixer. The cover has landed quite often on its legs, the level has been quite erratic over the last 7 years. There is no cathodic protection (no need).
Thanks for any further tips that may assist with the troubleshooting.
Regards.