KHIA headerKnow-How in Action

VOL XXVIII, NO 88

Hydro Turbine Guide Vanes Repaired And Protected With Belzona

 
 

Industry:

Power (POWR)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Power plant, Ukraine

 
 

Application Date:

January-February 2012

 
 

Application Situation:

Erosion/corrosion and cavitation by pressure to the face of turbine guide vanes revealed during annual inspection

 
 

Problem:

Erosion and cavitation of turbine vanes

 
 

Products:

Belzona 1311 (Ceramic R-Metal)

Belzona 1321 (Ceramic S-Metal)

 

Substrate:

Cast iron

 
 

Application Method:

The application was carried out according to Belzona Know-How System Leaflet CEP-1 and FBC-2. Belzona 1311 was used to resurface the profile. Belzona 1321 was applied to improve efficiency and protect against erosion/corrosion.

 
 

Belzona Facts:

Replacement was considered unacceptable due to a short shut down. Belzona was the only alternative. All work has been conducted in a short time, and this has allowed to minimize time and money

 
 

Photographs Description

  1. General view of the turbine guide vanes surface preparation  
  2. Grit blasting of the turbine guide vanes  
  3. Geometry of guide vanes repaired using Belzona 1311  
  4. Repaired surfaces of the guide vanes after the application of Belzona 1311 and Belzona 1321
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com