API 579 – Fitness-for-Service (FFS) evaluations are quantitative engineering assessments undertaken to demonstrate the structural integrity of in-service pressurized equipment that may have a fault or damage. This standard’s guidelines can be used to make “Run-Repair-Replace” decisions, and if confirmed fit for service, the equipment’s predicted remaining safe life can be calculated.

This course explains and applies the API fitness-for-service standard to help learners understand and implement it in their daily work. The course materials demonstrate how stress analysis, materials engineering, and nondestructive inspection work together to assess fitness-for-service. The processes apply to pressure vessels, pipelines, and tanks that are in use.

This training session is meant to provide rational, step-by-step techniques for assessing the equipment’s current structural integrity, determining its fitness for continued service, and selecting and performing the appropriate corrective action.