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Possibilities for Testing Welded Joints of the Walls of Steel Tanks Using Ultrasonic and Eddy Current Methods

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Abstract

Using the example of quality control of butt welds, we consider the possibility of increasing the rate of detection of defects in welded joints of small (regarding ultrasonic inspection) thickness in which ultrasonic flaw detection is complemented by eddy current testing. The possibility of combining the methods for detecting internal and surface defects during periodic diagnostics of the walls of vertical steel tanks (VSTs) is shown. The studies have been carried out on vertical and horizontal butt welds made by manual arc and semiautomatic submerged welding, including the most critical areas where these welds cross over. Examples of identifying cracks of operational origin are given. Comparison with the results of radiographic and magnetic particle testing is carried out. It is shown that during ultrasonic inspection of welded butt joints and their crossings on the wall of a VST, operational cracks in the cross section of the welds are quite confidently detected by the combined-scheme echo method, including with the use of phased arrays. The time-of-flight diffraction technique can also be used on linear sections of welds without intersections. It is noted that the detectability of surface and subsurface defects by these methods is considerably lower, and it is proposed to use operational eddy current testing to reveal such defects. It is shown that in this case, despite interference caused by the reinforcing beads of the welds, cracks coming out to the surface of the beads can be detected.

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ACKNOWLEDGMENTS

The authors thank Olympus-Moscow and LLC “Engineering Technical Systems” for the equipment and assistance in running experiments that were provided during the preparation of this article.

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Authors and Affiliations

  1. Research and Training Center “Welding and Testing,” Bauman Moscow State Technical University, 105005, Moscow, Russia

    N. P. Aleshin, N. V. Krysko & A. G. Kusyy

  2. Bauman Moscow State Technical University, 105005, Moscow, Russia

    N. P. Aleshin, N. V. Krysko & A. G. Kusyy

  3. Scientific Research Institute of Pipeline Transport (NII Transneft LLC), 117186, Moscow, Russia

    L. Yu. Mogilner, O. A. Pridein & M. T. Idrisov

Authors
  1. N. P. Aleshin
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  2. L. Yu. Mogilner
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  3. N. V. Krysko
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  4. O. A. Pridein
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  5. M. T. Idrisov
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  6. A. G. Kusyy
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Corresponding authors

Correspondence to L. Yu. Mogilner or N. V. Krysko.

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Aleshin, N.P., Mogilner, L.Y., Krysko, N.V. et al. Possibilities for Testing Welded Joints of the Walls of Steel Tanks Using Ultrasonic and Eddy Current Methods. Russ J Nondestruct Test 58, 657–665 (2022). https://doi.org/10.1134/S1061830922080022

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  • DOI: https://doi.org/10.1134/S1061830922080022

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