Smart Choice for Guided Wave Testing


Underwater Pipeline Inspection
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If a pipeline is underwater, it’s difficult to be inspected. But the MsS dry coupling tool makes the underwater pipeline inspection possible. The photo below shows a MsS dry coupling tool installed onto a underwater pipeline. The adapter and Lemo connectors are connected underwater and the dry coupling tool squeezes out water between the MsS probe and pipe surface to ensure proper coupling. The MsS probe is designed to generate torsional mode (shear particle motion) in a pipe and can inspect long distance with very low attenuation in low viscosity water. The MsS probe is very useful for inspecting pipelines in river, lake, or flooded area without removing water from the outer surface of the pipeline.

Underwater Pipeline Inspection
Underwater Pipeline Inspection using MsS Guided Wave System

The MsS guided wave testing uses high frequency ultrasonic waves of 64-, 90-, 128-, 180-, and 250-kHz center-frequency to reduce the interaction between traveling guided wave and geometric features such as simple pipe supports, welded pipe supports, and clamps, thus increasing inspection range. Using high frequency increases sensitivity of defect detection and spatial resolution. Due to these merits, MsS guided wave system is used for PMI inspection in order to find weld locations and also used for CUI and internal wall corrosion inspection to detect defects over a long distance.

Offshore