Quantifying the Benefit of Redundant Fluorescent Penetrant Inspection

Abstract

Redundant fluorescent penetrant inspection (RFPI) is the practice of performing multiple inspections on a single part. The philosophy behind multiple inspections is to increase the probability of detecting a flaw which may exist. In reality, the multiple inspections may not increase inspection capability as much as expected because the inspections may be performed by the same operator or multiple operators, the procedure may be reset before performing the next inspection, and the part may be cleaned.