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INSERT SLEEVE is a proven technology for preventing corrosion of internal girth welds. With the successful application of this technology, more such internally coated pipelines to prevent internal corrosion and subsequent catastrophic failures are being planned.
For water injection or multiphase oil and gas pipelines, internal corrosion is a dominant factor contributing to failures and leaks in pipelines. Pitting corrosion along the bottom of the pipeline is the primary corrosion mechanism leading to failures in uncoated carbon steel pipelines. The pitting corrosion occurs due to presence of different elements in the water i.e, O2, CO2, H2S, bacteria, chlorides, scale, or suspended solids.
Country Of Origin : India
INSERT SLEEVES are designed to various pipeline systems as:
· Injection and re-injection
· Crude oil gathering
· Highly corrosive gas piping
· Potable & Waste Water
· Jet Fuel transfer
· Fire Water & Salt Water piping
Innovations in internal coatings - fusion bond or liquid epoxies and application technologies coupled with innovations in internal girth weld technologies have enabled the owners to design and successfully lay internally coated carbon steel pipelines both off-shore and on-shore.
Internal epoxy lining are of two types:
- Liquid Epoxy Coatings
- Fusion Bond Epoxy Coatings
Liquid Epoxy Coatings: For internal lining of pipelines carrying water or other corrosive fluids, Liquid Epoxy Coatings is used. Here two components are crucial solventless high build epoxies comprising of resin and hardener mixed in a volumetric proportion as recommended by the manufacturer and sprayed on to the internal surface of the pipeline. Fusion Bonded Epoxy Coatings: Commonly referred to as FBE Coating, these are epoxy-based powder coating systems that are widely used to protect internal surfaces of steel pipes used in oil and gas fields for various applications - raw water, high temperature or high pressure injection water, formation water, down hole tubing, piping connections, valves, etc. from corrosion.
Internal Field Weld Joint Coating
The most critical section of an internally coated pipeline is the internal field joint. Proper coating or isolation of this section is essential to prevent corrosion and maintain integrity of the pipeline. There are technologies which have evolved over
