KHIA headerKnow-How in Action

VOL XXI, NO 22, ELITE

Belzona® Repairs A Hydroelectric Turbine

 
 

Industry:

Power (POWR)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Hydroelectric Power Plant, France

 
 

Application Date:

February 2001

 
 

Application Situation:

Francis Turbine

 
 

Problem:

Erosion, corrosion and cavitation of the stay vanes and the casing had induced vibration into the turbine and was also making the turbine run inefficiently.

 
 

Products:

Belzona® 1311 (Ceramic R-Metal)
Belzona® 1341 (Supermetalglide)
Belzona® 5811 (Immersion Grade)

 

Substrate:

Steel

 
 

Application Method:

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

 
 

Belzona Facts:

Once back in service the turbine once again achieved its maximum efficiency. The coatings were also chosen to protect the turbine from further damage. An inspection of the turbine following 11 years of service showed that the repair was in excellent condition with only minor damage to the coating, due to erosion from entrained solids, being observed.

 
 

Photographs Description

1. The Francis turbine  2. The extent of the damage  3. The completed application 4. Turbine after 11 years in service

 
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