Manufacturing facilities worldwide face a common challenge: critical equipment ages, operating conditions push components beyond original design assumptions, and the cost of unplanned shutdowns keeps rising. Heat exchangers develop creep damage after decades of service. Pressure vessels accumulate fatigue cycles that erode safety margins. Reactor internals warp under relentless temperature swings. The question is never whether equipment will degrade, it always does. The real question is whether you can quantify that degradation, predict when failure becomes likely, and make informed decisions about repair, re-rating, or replacement before a catastrophic event forces your hand. That is exactly what a Fitness-for-Service (FFS) assessment as per API 579 / ASME FFS-1 is designed to answer.…