KHIA headerKnow-How in Action

VOL XXVI, NO 21, ELITE

Belzona® Strengthens Laydown Deck

 
 

Industry:

Oil & Gas (OILG)

 
 

Application:

Gaskets, Seals and Shims (GSS)

 
 

Customer Location:

UK North Sea

 
 

Application Date:

2004

 
 

Application Situation:

Offshore Oil Platform Laydown Deck

 
 

Problem:

The deck had become weakened through daily operation (lowering/removal of containers) and weather. The original 8mm steel deck was corroded through wall in many locations. welding was not an option due to the installed underr-deck passive fire protection.

 
 

Products:

Belzona® 1111 (Super Metal)

Belzona® 5811 (Immersion Grade)

 

Substrate:

Carbon Steel

 
 

Application Method:

A modified version of Belzona System Leaflet GSS-9 was employed. 5mm steel plates, drilled to accept jacking bolts and injection ports, were prepared by gritblasting and positioned onto the gritblasted deck. The jacking bolts were used to obtain accurate levels. The circumference of the plates were sealed using Belzona® 1111. Belzona® 5811 was injected into the void using an airless pump to seal and bond the reinforcement plate to the deck with 100% contact area being achieved.

 
 

Belzona Facts:

Independent testing showed that the Belzona bonding method in this case was equivalent in strength to a welded plate, stiffer AND more elastic than the original 8mm plate, good resistance to impact loading, and considered by the independent engineering designers to be "robust enough to withstand the rigours of laydown area operations. The key benefits were that daily operations were not interrupted and that the passive fire protection in the machinery space below would not be affected. This work has been inspected annually and has resulted in other deck strengthening projects being undertaken. Last feedback and inspection image received in 2015, engineers are still delighted with the work.

 
 

Photographs Description

  1. Condition of deck prior to starting work
  2. Installation of deck reinforcement
  3. Completed works
  4. Inspection in 2015
 
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