Introduction to Fitness-For-Service applications for the Pulp & Paper Industry, TAPPICon25

Across many industries, Fitness-For-Service (FFS) is utilized to evaluate damaged in-service pressure retaining equipment such as pressure vessels, piping, and storage tanks. Processing facilities are often faced with aging infrastructure susceptible to damage mechanisms that require engineering, repair, or replacement. The joint committee publication between API and ASME; API 579-1/ASME FFS-1 (API 579) provides engineering procedures to evaluate such equipment which promotes safe operation while often allowing cost-effective solutions regarding future mechanical integrity decisions of equipment [1].

FFS methodology uses a combination of detailed inspection data and engineering to determine if the damaged equipment can demonstrate adequate protection against relevant failure modes (collapse, buckling, fracture, etc.). The results of FFS evaluations can be used by equipment owner/users to support run/repair/replace decisions. The results from the assessment may also be used to optimize future inspection plans and estimate equipment remaining life.

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