Engineered Surfaces for Exceptional Performance
Engineered Surfaces for Exceptional Performance

Sulphur Dump Drums & Pipes - Refinery

As well as protection against external corrosion, metal-sprayed coatings have been applied to the internal surfaces of pipes and vessels. The internal surfaces face corrosion as they are exposed to moisture and oxygen, particularly at the sulphur ‘splash zone’. 

The sulphur dump drums and pipes, used to store and transfer sulphur in a refinery, were sprayed using the Arc Spray 140 and Arc Spray 700, for corrosion protection.  Again, the surface was blasted to SA 2.5 cleanliness and sprayed with aluminium to a thickness of 350µm. The aluminium was then sealed with a high temperature Silicone Aluminium sealer over a total surface of 1681m².  As the coatings were internal and not visible, no painted topcoat was required. The project took over two months to complete. 

Various other structures have also been sprayed as part of the project including condensers and other drums, vessels and pipework. Discussions are ongoing between APS and the customer regarding the future projects, which can benefit from metal-sprayed coatings to give long-term corrosion protection.