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VOL X, NO 17

Belzona® Repair To Diaphragms In Steam Turbine

 
 

Industry:

Power (POWR)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Power Plant in Indianapolis

 
 

Application Date:

February 1995

 
 

Application Situation:

Diaphragms in steam turbine

 
 

Problem:

Severe erosion/ corrosion of the turbine diaphragms in the the latter stages of the low pressure side of the steam turbine. This had been caused by many years exposure to saturated steam and had resulted in a decrease in efficiency in the turbine.

 
 

Products:

Belzona® 1311(Ceramic R-Metal)

Belzona® 1391

 

Substrate:

Cast Iron

 
 

Application Method:

Modified versions of Belzona Know-How Leaflets CEP-5 and CEP-3. Belzona® 1311 was used to rebuild the damaged areas. Sites rebuilt were then treated with two coats of Belzona® 1391.

 
 

Belzona Facts:

Welding was considered as an alternative method of repair. Downtime would have increased from three days, utilising Belzona, to three weeks if welding had been chosen.

 
 

Photographs Description

  1. Erosion damage on the diaphragm   
  2. Application of Belzona® 1311 to restore profiles   
  3. Application of Belzona® 1391 underway
 
 
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For more information about Belzona visit: www.belzona.com