Manual-UT surveys on 24 points around the circumference marked with painted spots suffers considerable variation from reading to reading.

In slurry transport systems a common problem is what is called Leading Edge Panning wear. A small high wear area appears just downstream of the coupler at the 6:00 position at the leading edge of a spool. This wear spot is often 12 to 25 cm long

The process described for leading edge panning has also been observed downstream of butt welds. Butt welds in field fabricated spools can be misaligned so that there is a down-step in the internal bore going downstream of the butt weld. If one or both

PPMM requires frequent, relevant, quality data with expert analysis that considers historical and adjacent data to provide a reliable indication of the present condition of the asset and predict what to expect for service life if the recent operating