Stopcorr Provides Comprehensive Corrosion Protection for Buried Flanges - Case Study

PROVIDED PROTECTION

The StopCorr system eliminated external corrosion risks by forming a continuous, impermeable barrier across the flange region. The conformable and adaptable nature of the repair materials allowed complete encapsulation of the irregular geometries.

• Formed a moisture resistant protective barrier, shielding the pipe from soil chemistry and water ingress.
• Repair system met applicable industry expectations for pipeline rehabilitation.
  Combined use of all the products reinstated corrosion protection of the the buried flange and adjacent pipe sections.

BURIED FLANGES CHALLENGES

• Previously applied coatings were incompatible or improperly installed, resulting in poor adhesion and accelerated corrosion.
• Environmental exposure and inadequate surface preparation led to the failure of the original coating system, particularly at the buried flange interfaces.
• A sharp diameter reduction from 8" to 4" introduced stress concentrations and created challenges for maintaining coating continuity across the transition zone.
• The remote site lacked the electrical infrastructure required for alternative coating systems, ruling out power-dependent solutions such as Oxifree®.

PROJECT NEEDS

• Mitigate corrosion at buried flanges where coating degradation and environmental exposure created active corrosion risks.
• Ensure effective protection across an irregular geometry associated with an 8" to 4" pipe diameter transition.
• Apply a solution that requires, due to remote site limitations, no heat, minimal surface prep, and no power source.
• Deliver long-term encapsulation using a chemically stable, easy to field apply system.