KHIA headerKnow-How in Action


Belzona® Seals Holed Heat Exchanger



Power (POWR)



Heat Exchangers (HEX)


Customer Location:

Coal-fired Power Plant - Macedonia


Application Date:

August 2003


Application Situation:

Heat exchanger operating at 90°C



Hole in a tube sheet due to erosion and galvanic corrosion between copper tubes and steel tube sheet.



Belzona® 1311 (Ceramic R-Metal)

Belzona® 1591 (Ceramic XHT-Metal)



Steel & Copper


Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflets HEX-1 and HEX-3.


Belzona Facts:

Customer chose this method because alternative was to cut the tubes and replace the tube sheet which is more difficult and needs much more time. Replacement of the tube sheet costs about 8,000EUR. Belzona have done this job for 1,050EUR and completed in two days. Two further much bigger heat exchangers have since been treated.


Photographs Description

  1. Preparing the heat exchanger for blasting
  2. The hole in the tube sheet is evident
  3. The hole is filled with Belzona® 1311
  4. The heat exchanger surface coated with Belzona® 1591
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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