Storage Tank Floor Reclamation
Corroded aboveground tank floor rebuilt and lined back to immersion service without cutting out plate.
What was failing
An aboveground storage tank floor corrodes from both the underside and the topside. Pitting and metal loss spread across the plates and the weld seams, thinning the steel that holds the stored product. Left untreated, the floor risks a release and forces the tank out of service. The owner needed the floor back in service without cutting out and replacing plate, and without losing the turnaround window.
How AAS approaches it
We start by grit-blasting the floor to clean, profiled steel so the repair bonds. We rebuild the pitted and thinned areas and the weld seams with a cold-applied composite, restoring profile to the plates. Then we apply a full-floor immersion-grade lining keyed to the stored product, sealing the steel and the rebuilt areas under one continuous barrier. We work the floor in stages so the crew stays productive on the turnaround clock.
Assess and map
We inspect the floor to locate pitting, metal loss, and seam damage, and confirm the stored product so the lining is keyed correctly.
Grit-blast prep
We grit-blast the full floor to a clean, profiled surface so both the composite and the lining bond to bare steel.
Rebuild pitting and seams
We rebuild pitted areas, thinned plate, and weld seams with a cold-applied composite, with no hot work and no plate replacement.
Apply immersion lining
We apply a full-floor immersion-grade lining over the steel and rebuilt areas as one continuous barrier.
Inspect and return to service
We check the lining and turn the floor back over to the owner within the turnaround window.
The result
From the job
Repair and protection work of this kind, performed by AAS crews across Louisiana.
Capabilities used here
Where this work happens
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