KHIA headerKnow-How in Action

VOL XXII, NO 72

Belzona® Saves Vital Chiller

 
 

Industry:

General Industry (GIND)

 
 

Application:

Heat Exchangers (HEX)

 
 

Customer Location:

Soybean Processor, Kansas

 
 

Application Date:

June 2007

 
 

Application Situation:

During the plant turn around it was discovered that an essential chiller was in dire need of repair.

 
 

Problem:

Bi-metallic corrosion was deteriorating the tube sheet surfaces. If the problem was left unresolved, the chiller would eventually suffer servere damage through internal leakage.

 
 

Products:

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

Substrate:

Steel

 
 

Application Method:

Application was carried out in accordance with Belzona System Leaflet HEX-1, 2 & 3. Belzona® 1311 was used to replace the missing metal. Two coats of Belzona® 1321 provides a corrosion barrier to the surfaces. A fine grit grind stone was used to smooth the surface. This allows the use of the OEM Trane o-ring seals.

 
 

Belzona Facts:

The local Trane dealer called and needed the chiller repaired in a hurry as the plant was in the middle of its one week turn around. The entire chiller and end covers were refurbished to better than new condition in two days and returned to service a couple days later. Not only was the chiller repaired for a fraction of the cost of replacement but it saved the plant from unexpected expensive down time.

 
 

Photographs Description

  1. Original condition of tube sheet with scale build-up
  2. Bi-metallic corossion damage revealed by blast cleaning. Note the voids between the tubes and tubesheet.
  3. Tube sheet. The surface was sanded to provide a perfect sealing surface.
  4. Protected end covers
 
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