KHIA headerKnow-How in Action


Belzona® Protects Hydroelectric Turbine Casing



Power (POWR)



Centrifugal Pumps (CEP)


Customer Location:

Hydroelectric power plant in Japan


Application Date:

March 1996


Application Situation:

Spiral casing of large Francis turbine



Erosion-corrosion caused by the flow of river water through the turbine over many years.



Belzona® 1341 (Supermetalglide)



Cast iron


Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflet CEP-10. The Belzona® 1341 was applied by airless spray to speed application on the large areas involved.


Belzona Facts:

The area was previously treated with a tar-epoxy coating, but this had to be re-applied annually. The Belzona® 1341 has provided long term protection. Annual inspections have been carried out and only localized repairs to minor mechanical damage have been required. Customer is totally satisfied with the application.


Photographs Description

  1. The casing after grit blasting
  2. The casing after application of Belzona® 1341
  3. The scale of the application is clearly evident
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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