KHIA headerKnow-How in Action

VOL XI, NO 23

Belzona® 1111 Repairs To Crevice Corrosion

 
 

Industry:

Oil & Gas (OILG)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

Offshore oil production company

 
 

Application Date:

June 1997

 
 

Application Situation:

Flange faces of gas cooler

 
 

Problem:

Incorrect joint material caused extensive crevice corrosion on two separate coolers

 
 

Products:

Belzona® 1111 (Super Metal)

 

Substrate:

Inconel

 
 

Application Method:

Application was carried out in accordance with Belzona System Leaflets VPF-1 and VPF-13. Only the localized corrosion pitting was rebuilt on these units and dressing back to profile was carried out using hand tools.

 
 

Belzona Facts:

Belzona repairs were completed in just six hours avoiding the need to weld and machine to size which would have taken several days. This saved gas production losses estimated at tens of thousands of pounds.

 
 

Photographs Description

  1. Inspection of the crevice corrosion being undertaken
  2. Typical crevice corrosion pitting apparent on the flange face.  
  3. The Belzona repair completed without removal of the tube bundle
  4. The time consuming alternative on-site machining after welding
 
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