CASE STUDY

Shell Pipeline Protected from Soil-to-Air Corrosion with Denso Products

Exposed Surface Coatings

Project Data

LocationHouston, TX
Completion2000
Project TypeSoil-To-Air Pipeline Protection
Products UsedDenso Paste / Densyl Tape / Glass Outerwrap
Contractor or Applied ByShell Pipeline

Project Details

The Denso Petrolatum Tape System was applied to the area of Shell’s pipeline where it transitions from underground to aboveground known as soil-to-air interface. This area of a pipeline can be very susceptible to corrosion due to the high moisture content, temperature variation, oxygen, pH, bacteria and soil contamination. The Denso Petrolatum Tape System was chosen due its long history of providing corrosion protection in severely corrosive environments. The surface was prepared and cleaned to SSPC SP 2/3. The Denso Paste was then applied followed with Densyl Petrolatum Tape. The petrolatum tape was then overwrapped with Denso Glass Outerwrap to provide impact and abrasion resistance. The system has been in service for over 14 years and still providing excellent corrosion protection. The Denso Petrolatum Tape System consists of petrolatum based primer and tape. The tape is composed of a non-woven synthetic fabric carrier that is impregnated with a petrolatum compound and inert siliceous fillers. The Glass Outerwrap is fiberglass cloth impregnated with a water activated polyurethane resin. Denso has protected millions of square feet of steel in a variety of highly corrosive environments.