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Overview
Corrosion is a ubiquitous damage mechanism affecting process equipment in the energy sector, such as high-energy piping, pressure vessels, and other critical assets. The resulting wall loss reduces the pressure containment envelope which, if not properly managed, can lead to loss of containment of the process fluids within. The potential consequences can be catastrophic and include loss of life, acute environmental damage, financial losses from regulatory fines and loss of production, and severe reputational damage.
As part of any effective inspection and maintenance program, pressure vessels, piping, and other critical components require periodic inspections, often governed by various regulations and/or industry codes and standards. The common objective is to ensure continued safe, reliable, and efficient operation.
The most widely used non-destructive testing technique, Ultrasonic Testing (UT), is limited by the maximum operating temperature of the transducer, the evaporation of acoustic couplants, errors introduced by the changing ultrasonic velocity in the material due to temperature, and the required compensation factors. Many have tried to overcome these limitations with increased stand-offs, long delay lines/large wedges, or with active cooling to either isolate the transducer from the heat-source or avoid irreparable damage to the probe due to elevated temperatures
This white paper discusses how new high-temperature capable UT technologies are enabling on-stream wall loss monitoring without the need for downtime, allowing informed fitness-for-service and process control decision making with real-time asset intelligence.
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