KHIA ID: 412
Industry: Oil & Gas (OILG)
Application: VPF-Valves, Pipes and Fittings (VPF)
Substrate: Rusting Steel
Customer Location: Offshore Oil Company
Application Date: October 2003

Belzona® 5851 (HA Barrier)

Problem: The presence of insulation around the heating medium pipework had let to some corrosion of the pipework over a period of time. During a routine inspection it was decided that applying Belzona® 5851 whilst the pipework remained in service represented the best option to prevent future corrosion.
Photograph Descriptions
  1. Corrosion to heating medium pipework
  2. Application of first coat of Belzona® 5851
  3. Completed application
Application Situation
Corrosion Under Insulation (CUI) on heating medium pipework.
Application Method
The pipework was wet-blasted, allowed to dry and any residual aggregate brushed off. Some flash rusting was evident, and considered acceptable prior to application of two 250 micron coats of Belzona® 5851.
Belzona Facts
Belzona® 5851 was successfully used and allowed the customer to deal with an important maintenance issue without the need to remove equipment from service or wait for a future shutdown. The use of wet blasting in this instance allowed for rapid removal of the corrosion deposits, as well as ensuring that no non-visible surface contaminants, such as chlorides from the marine environment, were present.