KHIA headerKnow-How in Action

VOL XXV, NO 8

Belzona® Refurbishes Raw Water Strainer

 
 

Industry:

Power (POWR)

 
 

Application:

Wall Problem Areas (WPA)

 
 

Customer Location:

Power Plant, Missouri

 
 

Application Date:

Summer, 2010

 
 

Application Situation:

Housing of raw water strainer.

 
 

Problem:

The existing coating had completely failed allowing severe pitting within the housing to occur. The customer was concerned not to allow further loss of wall thickness.

 
 

Products:

Belzona® 1311 ( Ceramic R Metal )

Belzona® 1321 ( Ceramic S Metal )

 

Substrate:

Cast iron

 
 

Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflets VPF-1 & 2. The substrate was first prepared using needle guns to remove scale and remaining coating. This exposed more pitting that the customer could not previously see. The substrate was then grit blasted before Belzona® 1311 was used to fill in pitting and smooth out the entire surface. Finally two coats of  Belzona® 1321 were applied.

 
 

Belzona Facts:

Replacement cost was near $20k. The repair was completed for approximately $3k in product. Cost saving was an estimated $17k, not including downtime. The job was completed in one shift.

 
 

Photographs Description

  1. The strainer housing
  2. Deep corrosion pitting clearly evident
  3. Completed application

 

 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 

 

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