Sea Water is Relentless — And Pipelines Feel It First

Saltwater never rests. For coastal power plants, seawater intake pipelines operate under constant exposure to highly aggressive conditions. From the moment water enters the system, corrosion begins its silent attack.

Without proper protection, these pipelines become a ticking clock—leading to leaks, reduced efficiency, unplanned shutdowns, and costly replacements. Ensuring long-term power plant corrosion protection is not just an option—it’s a necessity.

The Challenge: Corrosion from Inside and Out

Seawater intake systems face a combination of internal and external threats that accelerate deterioration:

pipeline corrosion

  • Internal MIC (Microbiologically Influenced Corrosion): Caused by bacteria that thrive in seawater environments

  • Biofouling: Marine growth buildup restricting flow and reducing efficiency

  • External Corrosion: Soil exposure and moisture leading to coating failures

  • Cathodic Disbondment: Breakdown of external coatings under cathodic protection systems

  • Inspection Difficulties: Buried or submerged pipelines are hard to access and monitor

These challenges make seawater intake pipeline corrosion one of the most critical issues in coastal power infrastructure.

Our Approach: Engineered Protection Systems

To combat these aggressive conditions, a combination of advanced internal and external protection systems is essential:

1. Internal Pipeline Lining

Internal Pipeline protected with Duromar SAR & Duromar HPL-2510

  • High-performance glass flake epoxy linings and Duromar® coating systems

  • Designed for excellent resistance to seawater, chlorides, and microbial attack

  • Smooth internal finish improves flow efficiency and reduces fouling

2. External Pipe Coating & Wrapping

External Pipeline protected with Duromar SAR & Duromar HPL-2510

  • Multi-layer wrapping systems and protective coatings

  • Provides resistance against soil corrosion and moisture ingress

  • Compatible with cathodic protection systems

3. Flexible Application Methods

  • In-situ application for existing pipelines without dismantling

  • Pre-fabrication coating for new pipelines before installation

This integrated solution ensures complete internal pipeline lining and external pipe coating protection.

Why It Works: Proven Performance in Harsh Environments

The effectiveness of these systems lies in their ability to create a robust, long-lasting barrier:

  • Superior Barrier Protection against water, oxygen, and corrosive ions

  • Chemical & Biological Resistance to withstand seawater and MIC

  • Abrasion Resistance for pipelines carrying suspended solids

  • Extended Service Life compared to uncoated or conventionally coated steel

  • Reduced Maintenance Costs and improved operational reliability

By addressing both internal and external degradation, these solutions significantly enhance the lifespan of circulating water pipelines.

Where We’ve Done It: Proven in Coastal Power Plants

These advanced coating and lining systems have been successfully implemented across multiple coastal thermal power plants, protecting critical seawater intake and circulating water pipeline networks.

From new installations to rehabilitation of aging infrastructure, these solutions continue to deliver long-term performance in some of the harshest operating environments.

Conclusion: Don’t Let Corrosion Control Your Plant

Seawater may be relentless—but corrosion doesn’t have to be. With the right combination of internal pipeline lining and external pipe coating, power plants can protect their assets, improve efficiency, and extend service life.


Arudra Engineers Pvt Ltd, in technical collaboration with Duromar Inc. (USA), is a licensed Manufacturer, Distributor, and Applicator of the Duromar® range of products.