Armoring of Corrugated Pipelines for Communication Use in Petroleum and Petrochemical Industries

Armoring of corrugated pipelines provides mechanical protection, durability, and compliance with industry standards for communication systems in petroleum and petrochemical environments.

Purpose of Armoring

Armoring is applied to corrugated pipelines to enhance mechanical strength, abrasion resistance, and environmental protection. In petroleum and petrochemical industries, pipelines often traverse harsh environments, including underground, offshore, or areas with high chemical exposure. Armored pipelines protect communication cables from crushing, impact, and chemical corrosion while maintaining flexibility for installation in confined or curved spaces .

Materials and Methods

• Metallic Sheaths: Armoring typically involves steel wire armor (SWA) or aluminum wire armor (AWA). Steel provides higher mechanical strength, while aluminum is lighter and suitable for single-core cables .
• Corrugated Design: The metallic strip is wound helically around the pipeline or cable core, creating a corrugated structure that allows flexibility while maintaining protection .
• Coatings: External coatings such as Novocoat SP2000W or SC2200 epoxy provide chemical resistance to acids, alkalis, and salts, as well as thermal cycling and abrasion resistance .
• Flexible Conduits: Armoring machines can produce interlocked metallic tubes for flexible conduits, which are particularly useful for communication pipelines requiring both protection and bendability .

Standards and Guidelines

• ISO 21457:2010 provides material selection guidelines for petroleum and petrochemical systems, ensuring long-term performance under chemical and environmental stress .
• ISO 13623:2017 specifies design, materials, construction, and testing requirements for pipeline systems in petroleum and natural gas industries, applicable to rigid metallic pipelines including armored communication conduits .
• API Standards offer additional guidance on safety, material selection, and operational practices for pipelines in oil and gas facilities .

Applications

• Communication Pipelines: Armored corrugated pipelines are used to protect fiber optic or signal cables in refineries, petrochemical plants, and offshore platforms.
• Underground and Outdoor Installations: Armoring ensures resistance to soil pressure, mechanical impact, and environmental degradation.
• Integration with Process Pipelines: Armored conduits can be installed alongside or within process pipelines, maintaining signal integrity while withstanding industrial hazards.

Summary

Armoring of corrugated pipelines in petroleum and petrochemical industries combines mechanical protection, chemical resistance, and compliance with ISO/API standards. Using metallic sheaths, corrugated designs, and protective coatings, these pipelines safeguard communication systems in challenging industrial environments, ensuring reliability, longevity, and operational safety .