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Belzona® 1212 Repairs Cracked Transformer Fin



Power (POWR)



Tanks and Chemical Containment Areas (TCC)


Customer Location:

Electricity Substation, Washington, USA


Application Date:

March 2015


Application Situation:

Oil filled substation transformer radiator fin.



There was a crack on the top edge of the oil filled transformer radiator fin. 



Belzona 1212





Application Method:

The application was carried out in accordance with a modified Belzona Know-How System Leaflet TCC-1. The paint was removed and the area was prepped with coarse emery cloth. Belzona 1212 was mixed per IFU guidelines and applied with a spatula, firmly pressing down to fill the crack and ensure maximum contact with the surface.


Belzona Facts:

The first repair attempt to weld the crack actually developed a new crack next to the weld. This was an active leak, resulting in oil and nitrogen escaping from the transformer. With welding, the problem was only getting worse. The other option would have been to continue welding and possibly needing to drain the oil from the tank, removing the transformer from service for an extensive amount of time. Belzona 1212 allowed for a quick prep and a quick application with a fast cure time. Approximately 1/4 of a unit was used for this repair. After discovering the benefits of Belzona, other opportunities where Belzona can be beneficial to their maintenance program are being explored.


Photographs Description

  1. Crack with oil present.
  2. Applying Belzona 1212.
  3. Finishing application.
  4. Completed application.
Case study pic one


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 Case study pic four


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