KHIA headerKnow-How in Action

VOL XXX, NO 42

Belzona® Keeps Rig Running After Glass Flake Failure

 
 

Industry:

Oil & Gas (OILG)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

North Sea, UK

 
 

Application Date:

May 2015

 
 

Application Situation:

A 52’’ diameter seawater discharge caisson made up of 5 sections of varying lengths (between 11 and 15 meters) on an offshore oil rig required internal corrosion protection.

 
 

Problem:

Existing caisson had been lined with a glass flake coating, which has since failed. HSE authority have requested for the caisson to be replaced or the rig would have to be shut down. Given the short notice, metal cladding of the caisson was no longer an option. Additionally, the customer would not repeat the same mistake by specifying a glass flake coating again. A key parameter in the material selection was the design life of 35 years. The lining option would have to be robust and remain maintenance-free for a long time.

 
 

Products:

Belzona 1381

Belzona 1111 (Super Metal)

 

Substrate:

Steel

 
 

Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflet VPF-2. The coating was applied at a thickness of 2 x 1000 microns to optimize longevity of the equipment. Flange faces were protected with Belzona 1111.

 
 

Belzona Facts:

Maintenance work on a caisson would be very difficult due to access. Based on many years of previous experience with Belzona materials as well as features of the novel Belzona linings, the client was satisfied that choosing Belzona 1111 and Belzona 1381 was the best option to ensure uninterrupted running of the rig.

 
 

Photographs Description

  1. Grit blasted caisson
  2. Spray application in progress
  3. Lining thickness being measured
  4. Completed application
 
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