The client remembered a presentation Tube Tech International had given last year and called us to inspect the asset.
We advised the client to position the bundle vertically and scaffold it; this would negate the tube sag and allow us to move the tubes and clean right into the middle of the bundle. We cleaned the bundle using Plate Jett lances from the sides, at all levels, and steel flex lances as well as Flexis and spinning jets from the top, utilizing metal bars to carefully prize apart the fins which had become interlocked. Whilst cleaning, we dosed the water we were hydro blasting with HoldTight 102 flash rust inhibitor. This prevents flash rusting of the surfaces for up to five days. This allowed us time to completely clean the bundle and then apply a full coat of Cortech VpCI®-391 Corrosion Protector, which will preserve the metal for two years minimum.
Tube Tech then worked with Ernest Packaging, who provided specialist preserving packaging materials and a large crate. Tube Tech personnel encapsulated the bundle in the packaging, which was shrunk on and de-humidified before crating the unit up in its entirety. The client then transported the bundle to a secure, climate-controlled location where it will remain for the next two to three years before going back into service.
Two crews, each of four men, worked round the clock 24/7 for a total of ten shifts to complete the project.