KHIA headerKnow-How in Action


Belzona® Storage Tank Patch Repair



Oil & Gas (OILG)



Tanks and Chemical Containment Areas (TCC)


Customer Location:

Energy Provider, USA


Application Date:

April 2009


Application Situation:

Defective vertical seam of a fuel oil storage tank.



A vertical weld was found to be porous and product was weeping from a tiny porous spot less than 2mm in diameter. There was no corrosion or thin walling. The defect was located at the 30’ level of a 56’ high tank. The client needed the tank to be back in service as soon as possible.



Belzona® SuperWrap



Carbon Steel


Application Method:

The application was carried out in accordance with the Belzona® SuperWrap Application Working Procedure.


Belzona Facts:

The defect was sealed using a Belzona® SuperWrap patch and the repair was continued vertically along the entire length of the weld as a precaution. Belzona's compliant, engineered repair enabled the client to eliminate the need for hot work on the tank, which was a safety concern. This approach also minimized the time the tank was out of service. The tank was repaired, inspected, and ready for service within three days. Furthermore, the tank was back to full height of product three weeks later with successful results. The Belzona repair is compliant to ISO/TS 24817, DOT Title 49, Chapter 1, Part 192, and ASME PCC-2 Article 4.1 standards and as such provides a permanent, reinforced, composite repair to the tank.


Photographs Description

  1. Defect prior to repair 
  2. Repair area prepared by abrasive blasting 
  3. Application of Belzona® SuperWrap patch 
  4. Belzona® SuperWrap patch inspected and painted
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


For more information about Belzona visit: