Marine infrastructure is exposed to some of the harshest operating conditions, where continuous contact with seawater, tidal fluctuations, and splash zone exposure accelerate corrosion and structural deterioration.

During an inspection of the SHT-1 Jetty, several piles exhibited significant corrosion and wall-thickness loss, particularly within the splash zone. The rehabilitation programme required a long-term corrosion protection solution capable of restoring structural integrity while minimizing operational disruption and environmental impact.

The project also presented challenges including restricted access for above- and below-water works, marine growth on existing structures, and the need for an installation method that could be executed safely without extensive surface preparation.

Our Solutions

POSCO delivered a comprehensive marine asset rehabilitation solution by combining advanced corrosion protection systems with targeted structural strengthening.

The project included the installation of DENSO SeaShield marine wrapping systems on critical jetty piles, application of high-build epoxy coatings to exposed structural areas, and installation of structural steel sleeves to restore the load-bearing capacity of deteriorated piles.

To maximize long-term durability, HDPE protective jackets were installed to safeguard the wrapping system against impact, abrasion, UV exposure, and marine conditions. The complete solution was installed using environmentally responsible techniques that eliminated abrasive blasting and volatile organic compounds (VOCs), significantly reducing environmental impact while maintaining high installation quality.

Highlights

• 54 jetty piles rehabilitated
• 1,754 m² of marine pile wrapping installed
• 200 m² of high-build epoxy coating applied
• 9 structural steel sleeves installed
• 131 HDPE protective jackets installed
• 15-year manufacturer and contractor warranty

Results Delivered

The rehabilitation programme successfully restored the structural integrity of all identified jetty piles while significantly extending the operational life of the facility.

Key project outcomes included:

• Restored structural strength across all rehabilitated piles.
• Long-term corrosion protection for submerged and splash zone structures.
• Significant reduction in oxygen ingress to help slow future corrosion.
• Reduced maintenance requirements through durable, proven protection systems.
• Environmentally responsible installation without abrasive blasting or VOC emissions.
• Improved reliability and longevity of critical marine infrastructure supporting uninterrupted operations.

Why Posco?

Marine asset protection requires more than corrosion control. It demands an integrated engineering approach that balances structural performance, environmental responsibility, and long-term reliability.

By combining globally proven DENSO marine protection systems with specialist rehabilitation expertise, POSCO delivered a solution that restored structural integrity while providing durable, long-term protection against one of the world's most aggressive marine environments.

Our ability to execute complex rehabilitation projects with minimal disruption enables asset owners to maximize infrastructure life, reduce maintenance costs, and improve operational resilience.

Technologies Deployed

DENSO SeaShield 2000FD

Advanced marine pile wrapping system providing long-term corrosion protection in submerged and splash zone environments.

DENSO SeaShield 100

High-performance HDPE outer jacket offering superior resistance to UV exposure, impact, abrasion, and harsh marine conditions.

High-Build Epoxy Coating

Protective coating system delivering an additional barrier against corrosion for above-water structural elements.

Structural Steel Sleeves

Engineered reinforcement solution designed to restore the load-bearing capacity of corroded structural members.

Project Images

Looking to Protect Your Critical Infrastructure?

Whether you need marine corrosion protection, jetty pile rehabilitation, structural strengthening, or specialist protective coating solutions, POSCO delivers engineered asset integrity solutions that extend infrastructure life, improve reliability, and support safe operations in the most demanding industrial environments.

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