UNIQUE POLYMER SYSTEMS specialises in providing advanced protective solutions for critical infrastructure. This case study details the successful protection of pipeline field joints using UPS 405 EPC EPOXY PROTECTIVE COATING to prevent corrosion and ensure long-term durability.

During the installation of a new pipeline, the weld joints between sections of pipe were left exposed, making them vulnerable to corrosion. To protect these critical areas and ensure the longevity of the pipeline, a durable anti-corrosive coating was required.

The challenge was to effectively prepare the exposed steel at the field joints and apply a protective coating that would bond well to both the steel and the adjacent polyethylene surfaces. The solution needed to provide long-term protection against corrosion in a variety of environmental conditions.

UNIQUE POLYMER SYSTEMS provided a comprehensive protective coating solution using UPS 405 EPC EPOXY PROTECTIVE COATING. The application process involved the following steps:

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Surface Preparation

- The exposed steel at the joint areas was abrasive grit blasted to achieve a surface cleanliness level of SA2.5 with a 75-micron profile, in accordance with ISO 8501/4 Standard SA2.5 (SSPC SP10/NACE 2).

- A 75mm wide band of the existing polyethylene coating on either side of the joint was mechanically abraded to create a rough profile, ensuring proper adhesion of the new coating. 

Application of UPS 405 EPC EPOXY PROTECTIVE COATING

- UPS 405 EPC was mixed and applied in two coats to the prepared steel and polyethylene surfaces. Each coat was applied by brush and roller to achieve a nominal dry film thickness of 250 microns.

The dual-coat system provided comprehensive coverage and robust protection against environmental factors that could lead to corrosion.

The application of UPS 405 EPC successfully protected the pipeline field joints from corrosion. The coating provided a durable barrier that ensured the long-term integrity of the weld joints, contributing to the overall durability and reliability of the pipeline.

This case study demonstrates the effectiveness of UNIQUE POLYMER SYSTEMS' protective coatings in safeguarding critical pipeline infrastructure. Our advanced materials and precise application techniques delivered a reliable solution that ensured the pipeline's field joints would remain corrosion-free and structurally sound.