Fitness for service (FFS) assessment is a multi-disciplinary engineering analysis to determine whether the equipment is fit for continued service- typically until the next shutdown or repair opportunity.

The FFS is used to:

• Make a run, repair, or replace decisions
• Provides guidance on an inspection interval through the determination of remaining life

Types of FFS assessments

• Reactive (e.g., the damage is found when an FFS is found)
• Proactive (e.g., hydrostatic tank exemption)

The FFS evaluation covers:

• Present integrity of the component given the current state of damage
• Projected remaining life based on damage rate assumptions