KHIA headerKnow-How in Action

VOL XXII, NO 30

Galvanic Corrosion In Water Maker Repaired With Belzona

 
 

Industry:

Water / Wastewater (WATR)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

FPSO UK, North Sea

 
 

Application Date:

July 2002

 
 

Application Situation:

The fresh water maker started to leak

 
 

Problem:

Galvanic corrosion caused by the failure of the insulating gasket caused severe corrosion and under cut the existing glass flake coating. Base material was Carbon Steel plates were Titanium.

 
 

Products:

Belzona® 1111 (Super Metal)

Belzona® 1321 (Ceramic S Metal)

 

Substrate:

Carbon Steel

 
 

Application Method:

Application completed in accordance with Belzona System Leaflet VPF-13.

 
 

Belzona Facts:

Weld repair would have damaged more of the existing coating and onsite machining would have had to be used to reinstate the sealing faces and the bore of the nozzles. Time was key factor as this was an emergency repair situation.

 
 

Photographs Description

  1. Water Maker
  2. One of the areas of galvanic corrosion
  3. Forming the repair
  4. Repair completed, perfectly formed flange face
 
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