Waste Acid Sump and Trench Rehabilitation with FRP Lining

RAK repaired severe concrete deterioration in a waste acid sump and trench system caused by hydrochloric acid exposure. During a scheduled outage, the team removed damaged concrete, restored the structure, and installed a seamless, acid-resistant FRP liner. The solution prevented further chemical attack, ensured compliance, and provided long-term protection for the containment system.

The Problem

A chemical facility was facing a critical issue with a deteriorating coating system in their waste acid sump and approximately 150 feet of adjoining trench. The compromised coating allowed hydrochloric acid (HCl) to attack the underlying concrete, leading to significant erosion. This posed not only a structural concern, but also the risk of a costly EPA violation due to potential environmental exposure.

The Solution

Our team was brought in during a scheduled 7-day outage to remediate the issue. During this time, our team demolished the deteriorated concrete in both the sump and the trench, then repaired and restored the structural integrity of the concrete substrate. We completed the project by installing a seamless, acid-resistant FRP liner system that tied into the existing coating infrastructure. This solution was specifically engineered to prevent future acid penetration, maintain regulatory compliance, and ensure long-term durability of the containment system.

Project Pictures

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