We first cleaned the roof, the handrail and the wall of each tank thoroughly. We then manually removed rust from areas with corrosion. We retouched these areas with Sigmacover 690. We blasted the collar at the base of each tank to Sa 2.5. These were also treated with Sigmacover 690 primer. To conclude the paintwork, we applied a layer of Sigmadur 580 topcoat to the railings above the silos and the roofs and walls of each tank. After finishing, we gave a number to the roofs and walls of each tank.