KHIA headerKnow-How in Action

VOL XXII, NO 89

Belzona® Repairs Broken Hydro Electric Turbine Runner

 
 

Industry:

Power (POWR)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Hydro Electirc Plant, U.S.A

 
 

Application Date:

May, 2007

 
 

Application Situation:

Wicket gate came loose and fell into turbine breaking three blades on runner.

 
 

Problem:

Loss of balance and horsepower.

 
 

Products:

Belzona® 1311 (Ceramic R-Metal)
Belzona® 1321 (Ceramic S-Metal)
Belzona® 1341 (Supermetalglide)
 

Substrate:

Cast Steel

 
 

Application Method:

Application carried out in accordance with the Belzona Know-How System Leaflets CEP-1 & -3. Expanded metal was tack welded in place before rebuilding with Belzona® 1311. Complete runner then coated.

 
 

Belzona Facts:

At a cost of less than $5,000.00 in Belzona products, the hydro electric plant saved many thousands of dollars by repairing the turbine instead of sending it out to be repaired. Overall efficiency has been increased by 5-7 kilowatts per hour.

 
 

Photographs Description

  1. Broken runner blade
  2. Expanded metal tack welded
  3. Blades rebuilt with Belzona® 1311
  4. Completed application after coating runner
 
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