This paper presents a case study of the guided wave testing of a gas transmission pipeline of an approximate length of 1 km (0.62 mi), which is not piggable. Guided waves were used to screen the full length of the line and all indications were followed by a range of local tests. The findings were compared with structural integrity assessments, thus informing decisions for repair. This study shows the important and reliable role of guided wave testing applied in good practice.
Alleyne, D.N. and P. Cawley, “The Interaction of
Lamb Waves with Defects,” IEEE Transactions
on UFFC, Vol. 39, 1992, pp. 381–397.
Alleyne, D.N. and P. Cawley, “The Excitation of
Lamb Waves in Pipes Using Dry Coupled
Piezoelectric Transducers,” Journal of NDE,
Vol. 15, 1996, pp. 11–20.
Alleyne, D.N. and P. Cawley, “Long Range Propagation
of Lamb Waves in Chemical Plant
Pipework,” Materials Evaluation, Vol. 55, 1997,
pp. 504–508.
Alleyne, D.N., M.J.S. Lowe and P. Cawley, “The
Reflection of Guided Waves from Circumferential
Notches in Pipes,” Journal of Applied Mechanics,
Vol. 65, 1998, pp. 635–641.
Alleyne, D.N., B. Pavlakovic, M.J.S. Lowe and P.
Cawley, “Rapid Long-Range Inspection of
Chemical Plant Pipework Using Guided
Waves,” Insight, Vol. 43, 2001, pp. 93–101.
ASME, ASME B31G: Manual for Determining Remaining
Strength of Corroded Pipelines, New
York, American Society of Mechanical Engineers,
1991.
Cawley, P., D.N. Alleyne and C.W. Chan, “Inspection
of Pipes,” WO 96/12951, priority
date 20 October 1994.
Cawley, P., M.J.S. Lowe, F. Simonetti, C. Chevalier
and A.G. Roosenbrand, “The Variation of
the Reflection Coefficient of Extensional Guided
Waves from Defects as a Function of Defect
Depth, Axial Extent, Circumferential Extent
and Frequency,” Journal of Mechanical Engineering
Science, Vol. 216, 2002, pp. 1131–1143.
Cawley, P., M.J.S. Lowe, D.N. Alleyne, B.
Pavlakovic and P. Wilcox, “Practical Long
Range Guided Wave Inspection — Applications
to Pipes and Rail,” Materials Evaluation,
Vol. 61, 2003, pp. 66–74.
Demma, A., P. Cawley, M.J.S. Lowe and A.G.
Roosenbrand, “The Reflection of the Fundamental
Torsional Mode from Cracks and
Notches in Pipes,” Journal of the Acoustical Society
of America, Vol. 114, 2003, pp. 611–625.
Demma, A., P. Cawley, M.J.S. Lowe, A.G. Roosenbrand
and B. Pavlakovic, “The Reflection of
Guided Waves from Notches in Pipes: A Guide
for Interpreting Corrosion Measurements,”
NDT&E International, Vol. 37, 2004, pp. 167–180.
Demma, A., D.N. Alleyne and B.N. Pavlakovic,
“Guided Waves: Offshore Applications,” Proceedings
of the CONAEND Conference, Brazilian
NDT Society, Sao Paulo, Brazil, July 23–26,
2006.
Ditri, J.J., “Utilization of Guided Elastic Waves
for the Characterization of Circumferential
Cracks in Hollow Cylinders,” Journal of the
Acoustical Society of America, Vol. 96, 1994, pp.
3769–3775.
Kwun, H. and A.E. Holt, “Feasibility of Under-
Lagging Corrosion Detection in Steel Pipe
Using the Magnetostrictive Sensor Technique,”
NDT&E International, Vol. 28, 1995, pp.
211–214.
Lowe, M.J.S., D.N. Alleyne and P. Cawley, “The
Mode Conversion of a Guided Wave by a
Part-Circumferential Notch in a Pipe,” Journal
of Applied Mechanics, Vol. 65, 1998, pp.
649–656.
Mohr, W. and P. Höller, “On Inspection of Thin
Walled Tubes for Transverse and Longitudinal
Flaws by Guided Ultrasonic Waves,” IEEE
Transactions on Sonics and Ultrasonics, Vol. SU-
23, 1976, pp. 369–374.
Mudge, P., “Field Application of the Teletest
Long Range Ultrasonic Testing Technique,”
Insight, Vol. 43, 2001, pp. 74–77.
Pavlakovic, B., Wavemaker G3: Procedure Based Inspector
Training Manual, Guided Ultrasonics,
Ltd., Nottingham, England, 2007.
Rose, J.L., J.J. Ditri, A. Pilarski, K. Rajana and F.T.
Carr, “A Guided Wave Inspection Technique
for Nuclear Steam Generator Tubing,”
NDT&E International, Vol. 27, 1994, pp.
307–330.
Rose, J.L., L. Zhang, M. Avioli and P.J. Mudge,
“A Natural Focusing Low Frequency Guided
Wave Experiment for the Detection of Defects
Beyond Elbows,” ASME Journal of Pressure
Vessel Technology, Vol. 127, 2005, pp.
310–316.
Simonetti, F. and P. Cawley, “On the Nature of
Shear Horizontal Wave Propagation in Elastic
Plates Coated with Viscoelastic Materials,”
Proceedings of the Royal Society of London: Mathematical,
Physical and Engineering Sciences, Vol.
460, 2004, pp. 2197–2221.
Silk, M.G. and K.F. Bainton, “The Propagation in
Metal Tubing of Ultrasonic Wave Modes
Equivalent to Lamb Waves,” Ultrasonics, Vol.
17, 1979, pp. 11–19.