KHIA headerKnow-How in Action

VOL XII, NO 5

Belzona® Repair And Protection Of Pig Launchers

 
 

Industry:

Oil & Gas (OILG)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

Offshore Gas Producer

 
 

Application Date:

August 1994

 
 

Application Situation:

Existing and new pig launcher seal faces and internals.

 
 

Problem:

Crevice corrosion had caused pitting on the existing seal faces of pig launcher. New receivers for "Intelligent Pigs" required an impact/abrasion and corrosion resistant lining.

 
 

Products:

Belzona® 1111 (Super Metal)

Belzona® 1321 (Ceramic S-Metal)

 

Substrate:

Steel

 
 

Application Method:

Seal faces were rebuilt in accordance with a modified version of Belzona® Know-How Leaflet VPF-1, and machined on-site to the required tolerances. New launcher receivers were coated with Belzona® 1321 in accordance with Belzona® Know-How Leaflet VPF-2.

 
 

Belzona Facts:

Belzona® 1321 has been tested for long term immersion in sour gas by DNV and has been shown in practice to be far more erosion and impact resistant than previously used glass flake coatings.

 
 

Photographs Description

  1. Existing pig launcher showing seal area  
  2. On-site machining of Belzona® 1111 underway  
  3. Application of Belzona® 1321 to a new launcher
 
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