Chemical Storage Tank Restoration and Repair

Chemical Storage Tank Restoration and Repair

Commtank was contracted to inspect two above-ground storage tanks for a chemical manufacturing company in New England. While performing the inspection, it was deemed that the tanks would need to be repaired and a new coating applied. Other tasks included internal and external restoration, repairs to the existing secondary containment, and restoration of the existing canopy for the two 8,000-gallon tanks.

Internal/External Restoration

Crew members entered the above-ground storage tank (AST) and wiped down surfaces in preparation for sandblasting and coating. This was done by abrasive blasting AST interior in accordance with SSPC-SP5 to a white metal finish. The same was done for the exterior where crew members hand abraded the top portion of AST, using tools to scrape or sand away spot surface rust.

Secondary Containment / Canopy Repair

The Commtank team power-washed and cleaned the interior and exterior of the secondary containment surrounding the ASTs and prepared concrete surface in accordance with SSPC SP-13 profile. Repairs to the canopy included preparing the steel beam & the application of one coat epoxy primer. They were followed by an additional application of two coats of epoxy coating at a dry thickness of approximately 7.5mils total. 

Chemical storage tank corrosion visible during inspection.

Chemical storage tank corrosion visible during inspection.

Corrosion found under the tank during inspection.

Corrosion found under the tank during inspection show they are due for repair.

Commtank Crew make repairs to two 8,000-gallon tanks

Commtank Crew make repairs to two 8,000-gallon tanks.

Coating is complete inside the tank.

Coating is complete inside the tank.

Tank upon completion of restoration

Tank exterior upon completion of restoration.

Secondary containment is coated to contain fluids.

Secondary containment is coated to contain fluids in the event of a leak or spill.

 

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