A Metallic Sheath Diagnostic for Submarine Cables - Pesicc.org

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Eddy Current <strong>Diagnostic</strong> Eddy current inspection is a non-destructive testing (NDT) method used to identify or differentiate a wide variety of metallurgical conditions in electrically conducting ferromagnetic and non-ferromagnetic metals and metal parts. The method is based on based on the principles of electromagnetic induction.
Eddy Current Inspection System An eddy current inspection system consists of the following components: Oscillator Coil assembly (Probe) Bridge circuit Signal processing unit Readout or a display unit. The oscillator provides an alternating current of one or more frequencies to the coil. Frequencies used <strong>for</strong> eddy current inspection range from 50 Hz to 6 MHz The coil assembly induces an eddy current into the part being inspected and detects changes in the eddy current flow.
Page 1 and 2: Harry ORTON, OCEI, (CANADA), h.orto
Page 3: Fig. 1: Cross-section of the submar
Page 7 and 8: Probe coil Scan direction A B C D F
Page 9 and 10: Field Procedure The jute wrapping
Page 11 and 12: Fig. 7: Impedance plane diagram of
Page 13 and 14: Fig. 8: Termination of the submarin
Page 15 and 16: • Fig. 10: Impedance plane diagra
Page 17 and 18: Fig. 11: Ends of the spare cable pr
Page 19 and 20: Conclusions An innovative eddy cur

A Metallic Sheath Diagnostic for Submarine Cables - Pesicc.org

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