Offshore repair of a riser pipe
Industry: Oil & Gas (OILG)
Application: VPF-Valves, Pipes and Fittings (VPF)
Substrate: Steel
Customer Location: Ivory Coast
Application Date: May 2014
Problem: Cavitation near the flange, erosion between flange and T-section. Surface preparation created through-wall defects because of the thin remaining thickness of the pipe at some points.
Photograph Descriptions
- Before repair
- During internal application
- External repair - plate bonding
- Finished repair
Application Situation
12" T-pipe on an FPSO.
Application Method
In this case of emergency, an internal repair has been carries out first with Belzona 1121 in accordance with Belzona Know-How system leaflet VPF-1. Then a plate has been bonded on the through wall defect using the system leaflet VPF-11. To finish the repair, a reinforced wrap has been applied with Belzona 1121 and Belzona 9341. As the customer wanted a compliant repair, a Belzona SuperWrap system was designed and applied atop.
Belzona Facts
Due to the situation of the pipe and the explosive environment, Belzona products permitted a cold repair and a quick return to service which saved a substantial amount of money.
