API 653 provides the framework for the inspection, repair, alteration, reconstruction, and fitness-for-service evaluation of aboveground storage tanks.
Successful tank integrity programs require more than scheduled inspections—they require understanding degradation mechanisms, operating conditions, inspection history, and long-term risk exposure.
At Advanced Inspection Solutions, tank inspections are built around understanding:
AIS develops inspection strategies that combine:
The objective is simple:
Focus inspections where risk and degradation are most likely to exist.
Effective tank inspections begin with understanding how degradation occurs.
AIS utilizes API 571 principles to identify damage mechanisms that may affect tank floors, shells, roofs, nozzles, and associated components.
Potential degradation mechanisms may include:
Understanding the active damage mechanisms allows inspections to focus on areas most susceptible to deterioration.
Every storage tank is different.
AIS evaluates tank inspection requirements based on:
Stored Product
Operating Conditions
This classification process helps determine inspection priorities and mechanical integrity risk.
AIS inspection planning focuses on the areas where tank failures most commonly occur.
Tank Bottoms
Often represent the highest corrosion risk within the tank system.
Evaluation may include:
Tank Shells
Assessment focuses on:
Roof Systems
Inspection considerations include:
Nozzles & Appurtenances
Including:
AIS develops inspection strategies specific to each tank and service.
Inspection planning considers:
Product Characteristics
Environmental Conditions
Tank Design Features
This approach maximizes inspection effectiveness while targeting the areas most susceptible to degradation.
AIS integrates Risk-Based Inspection principles to enhance tank integrity management.
Probability of Failure
Evaluating:
Consequence of Failure
Evaluating:
Risk-based methodologies help prioritize inspection resources on the tanks presenting the greatest integrity exposure.
Tank integrity is directly influenced by operating conditions.
AIS encourages owner-operators to establish operating limits that may affect degradation rates, including:
Monitoring these variables can provide early indication of changing damage rates and mechanical integrity concerns.
Many tank inspection programs focus primarily on regulatory intervals.
AIS focuses on:
By combining API 653 inspection practices with API 571 damage mechanism identification and API 580 risk-based methodologies.
AIS develops inspection strategies designed to support safer operations, improved reliability, and informed asset management decisions.
"Tank integrity is preserved when degradation is understood, risk is managed, and critical assets are inspected before loss occurs."