Corrosion Inspection

  • Corrosion Inspection

    Posted by william on 27/11/2021 at 2:54 pm

    Hi! I am in need of some expertise. I have a section of piping that has been inadvertently submerged in water for several years (probably 40+ years). The pipe was discovered recently with lots of general corrosion on its surface in the form of loose scale and rust. The remaining pipe thickness must be found. The fear is that if we try to clean a section of the pipe to perform a UT Thickness reading may puncture the pipe. We have some knowledge of others in our industry who have had this happen. The question I have is what other inspection methods can I use to determine the remaining wall thickness without doing any surface cleaning of the loose scale or rust. Any help would be appreciated.

    jaden replied 1 year ago 2 Members · 1 Reply
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  • Corrosion Mapping (CM)

    jaden

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    28/11/2021 at 12:36 pm
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    you may try our multichannel ultrasonic gauge UT200s. It can handle pipe thickness measurement submerged under water when the probe is a few mm away from the pipe:

    Multi-channel Ultrasonic Thickness Gauge

    Most likely, you will look at the echoes from the pipe and decide the thickness based on the echo.
    There could be multiple reflections from the corroded pipe. UT200s software recently added the analysis window feature, which allows you to define the start point and end point of the thickness analysis window. This can help identify the thickness of the corroded pipe.

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