CASE STUDY
Submerged Gas Pipeline in Cumbria Utilises SeaShield 70/80™ System
SubSea & Splash Zone Coatings
Project Data
| Location | Cumbria, UK |
| Client | Cadent Gas |
| Contractor | Pipeline Maintenance Centre |
| Distributor | Lynvale Ltd |
| Date | 2022 |
| Products | SeaShield 70/80™ System |
Project Details
Winn & Coales (Denso) Ltd.’s SeaShield 70/80™ System was recently utilised during maintenance works on a National Grid pipeline in Cumbria.
Crossing the Duddon Estuary near Barrow-in-Furness, the existing anti-corrosion coating on the National Transmission System (NTA) pipeline had suffered mechanical damage due to shifting sand banks in the area. The remote location prohibited excavation machinery from accessing the site, requiring sections of the 10-inch diameter pipeline to be excavated by hand, thereby restricting the amount of pipe that could be accessed.
Once excavated, surface preparation was conducted to remove light marine growth and loose rust before the SeaShield 70/80 System was applied. Designed for the protection of submerged and shoreline pipelines, the system features water-displacing petrolatum tape (SeaShield™ Marine Piling Tape) and primer (Denso Paste S105™), a tough PVC-backed bitumen tape (Densopol 80™ Tape), and a glass-fibre reinforced outerwrap (Denso™ Glass Outerwrap); all of which combine to form a robust protective coating with exceptional impact and mechanical strength.
The submerged gas pipe is located in a remote waterside location.
The pipe was excavated by hand using shovels.
Surface preparation of the excavated gas pipe.
Existing coating damage was noted on the underside of the pipe.
Denso Paste S105 was applied by hand to the exposed area.
SeaShield Marine Piling Tape was wrapped circumferentially with a 55% overlap.
Close up of the anti-corrosion petrolatum tape wrap.
Densopol 80 Tape provides additional mechanical protection and resistance to impact damage.
Denso Glass Outerwrap applied on top of the bitumen tape.
A close up of the Denso Glass Outerwrap that completes the system.
The complete SeaShield 70/80 System application.
The submerged gas pipe is located in a remote waterside location.
The pipe was excavated by hand using shovels.
Surface preparation of the excavated gas pipe.
Existing coating damage was noted on the underside of the pipe.
Denso Paste S105 was applied by hand to the exposed area.
SeaShield Marine Piling Tape was wrapped circumferentially with a 55% overlap.
Close up of the anti-corrosion petrolatum tape wrap.
Densopol 80 Tape provides additional mechanical protection and resistance to impact damage.
Denso Glass Outerwrap applied on top of the bitumen tape.
A close up of the Denso Glass Outerwrap that completes the system.
