February 2011, Vol. 238 No. 2

TechNotes

T.D. Williamson Introduces Spiral Magnetic Flux Leakage Inspection Tool

T.D. Williamson, Inc. (TDW) recently announced the debut of its patent-pending spiral magnetic flux leakage (SMFL) inspection tool. The company said the unit is the latest addition to its range of magnetic flux leakage inspection tools and is capable of inspecting for long, narrow defects in the pipe wall and long-seam weld. It is said to combine MFL and transverse field inspection (TFI) capabilities to offer unprecedented detection capability. TDW explained, whereas traditional axial MFL technology detects volumetric pipeline anomalies, general corrosion and wide circumferential flaws, the new SMFL tool makes it possible to detect long, narrow defects in a pipe body and in lo

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