The Problem
A chromic acid tank operating with 10% hydrochloric acid (HCl) at 170°F exhibited signs of deterioration, including holes, pitting, and thin wall areas. Left untreated, these issues posed a risk to structural integrity, chemical containment, and operational safety. The aggressive chemical environment and elevated temperatures required a solution that could provide both corrosion resistance and long-term durability under harsh service conditions.
The Solution
The tank was rehabilitated using a multi-step process tailored for high-temperature, acidic service. After abrasive blasting to create an appropriate anchor profile, structural weld repairs were completed to restore areas with holes, pitting, and thin walls. A trowel-applied base layer was installed at 60–80 mils DFT, reinforced with embedded fiberglass to improve chemical resistance and structural integrity. To complete the system, a 40 mil DFT topcoat was applied. The repair restored the tank’s structural integrity and provided a durable, chemical-resistant lining suitable for continued service in corrosive conditions.
