KHIA headerKnow-How in Action

VOL XXI, NO 10, ELITE

Belzona® Repairs And Improves Francis Turbine Runner

 
 

Industry:

Power (POWR)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Hydroelectic Power Plant, Czech Republic

 
 

Application Date:

September 2003

 
 

Application Situation:

Francis Turbine Runner

 
 

Problem:

The runner had suffered extensive damage from erosion, corrosion and mechanical damage.

 
 

Products:

Belzona® 1111 (Super Metal)
Belzona® 1341 (Supermetalglide)

 

Substrate:

Steel

 
 

Application Method:

The application was carried out in accordance with Belzona® Know-How System Leaflets CEP-8 and CEP-10.

 
 

Belzona Facts:

 After the repair and coating of both the runner and wicket gates a 10 - 15% increase in output was recorded and the turbines were able to run at a greater range of heads than were possible before, thus earning the customer many time more in profit than the cost of the repair. After one year operation the runner was inspected and was found to have only suffered minor damage due to impact with pieces of wood. A further inspection in 2006 showed runner still to be in excellent condtion and in 2010 client expressed himself happy with the application.

 
 

Photographs Description

Damaged and worn runner After grit blasting Rebuilding with Belzona® 1111 After coating with Belzona® 1341

 
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