If multiple inspections have been performed, which inspection may best reflect current operating conditions?

The most recent inspection provides the latest wall-thickness data, damage morphology and operating snapshot, hence best represents current integrity conditions compared with baseline or specialised surveys done earlier.

B. Baseline data reflect as-built condition, not current degradation.
C. Process conditions are inputs, not inspection results.
D. Corrosion surveys may precede or lag current operations and are often indirect.

1. API RP 580, 3rd ed., 2016, Sec. 9.3.4 “Use the most recent credible inspection data for current PoF,” p. 41.

2. Kastner, Risk-Based Inspection Methodology, J. Loss Prev. 2000, 13(2), 117-124, DOI:10.1016/S0950-4230(99)00038-1.