API 653 Tank Inspection, Repair, and Liner Systems
American Built
✳︎
US Veteran Owned
✳︎
Customized Liners
✳︎
American Built ✳︎ US Veteran Owned ✳︎ Customized Liners ✳︎
Built to Protect and Extend Tank Life
Routine API 653 inspections play a critical role in protecting aboveground storage tanks and extending their service life. Identifying corrosion, structural wear, or foundation concerns early allows operators to address issues before they escalate into major repairs or environmental incidents.
When tanks are equipped with internal liner systems, proper inspection and maintenance of both the steel structure and liner are essential. Liners create a protective barrier between stored product and tank steel, reducing corrosion risk and helping maintain long term tank integrity.
This combined protection supports compliance, reduces unexpected downtime, and preserves critical infrastructure investments.
Liner Inspections and Complete Tank System Evaluation
In addition to API 653 tank inspections, we perform liner inspections for tanks equipped with internal containment systems. Liner inspections focus on evaluating liner material condition, seams, penetrations, and high wear areas to identify signs of damage, chemical exposure, or aging before containment is compromised.
Regular liner inspections help:
Extend liner service life
Reduce the risk of leaks
Maintain chemical compatibility and containment performance
Support regulatory and maintenance documentation
By offering both API 653 tank inspections and liner inspections, we provide a comprehensive evaluation of the entire tank system. This integrated approach ensures that both the steel structure and internal containment system are performing as intended, helping owners make informed repair, retrofit, and maintenance decisions.
DAKK liner solutions and inspection services are designed to support safe operation, regulatory confidence, and long term asset protection.
API 653 Inspections for Aboveground Storage Tanks
Aboveground storage tanks are critical assets, and ensuring their safety, compliance, and longevity is essential. API 653 inspections are the industry standard for evaluating the condition of aboveground storage tanks in accordance with American Petroleum Institute guidelines. These inspections are designed to assess structural integrity, operational safety, and continued fitness for service.
API 653 inspections evaluate tanks used to store fertilizers, water, chemicals, fuels, and other industrial products. Through detailed assessment procedures, inspectors identify corrosion, metal loss, settlement concerns, weld degradation, and other conditions that could impact performance or lead to leaks, downtime, or costly failures.
Depending on tank age, service history, and regulatory requirements, inspections may include external, internal, and in service evaluations. The inspection process examines the tank shell, roof, and bottom condition, verifies weld integrity and plate thickness, evaluates corrosion levels and remaining service life, and reviews foundation stability and settlement patterns. Nozzles, penetrations, and associated components are also assessed to ensure full compliance with current API 653 standards.
Performed by certified API 653 inspectors, these evaluations provide detailed documentation of tank condition along with repair recommendations and future inspection intervals. This structured approach helps owners maintain regulatory compliance, protect environmental safety, and extend the service life of their aboveground storage tanks.