Guided Wave Inspection of Pipe Corrosion

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Learning Event: eLearning, Self-Paced
Contact Hours: 1.5
Valid for ASNT Level III recertification: Yes

Pricing:

  • Member: $49
  • Nonmember: $79

ASNT members receive member pricing on course registration. To receive member pricing, you must join/renew prior to registering before a class.

Course Description 

This course is intended for nondestructive testing technicians (Levels I, II, and III) with a fundamental grasp of ultrasonic testing theory and applications that can be extended to an understanding of the guided wave method.

The corrosion that develops over time within structures and pipelines is one of the most pressing integrity problems today. In many instances, the corrosion is hidden or inaccessible due to attachments, welds, or supports. The advantages of guided wave testing (GW) to inspect corrosion under insulation (CUI) and corrosion under pipe supports (CUPS) has led to its growth as a nondestructive testing (NDT) method over the last 20 years. 

In this course, the measurement method of a guided wave scanning instrument is explained and demonstrated. This device can be used to quantify wall thickness remotely, without direct access to the position measured. The learner should come away with an understanding of guided wave theory as it is applied to a determination of wall loss due to pipeline corrosion.

By the end of this eLearning, you should be able to explain how guided wave testing (GW) detects and measures wall loss due to corrosion in inaccessible areas of a pipeline. You will also be able to explain the basic theory of guided wave testing and how it differs from conventional ultrasonic testing.   

NOTE: This learning module is not intended to meet the requirement of CP-105 toward SNT-TC-1A and CP-189 certification of Level I and/or Level II personnel.

Acknowledgment: The videos in this eLearning are excerpted from a presentation delivered by Dr. Brian Pavlakovic and co-authored by Dr. David Alleyne of Guided Ultrasonics, Ltd., at the 2019 ASNT Annual Conference in Las Vegas. The information presented in this course is provided to help you learn about NDT practices and technology. The speaker is an unpaid volunteer who works for an equipment manufacturer. References to specific original equipment manufacturer (OEM) equipment is for instructional purposes only and does not constitute an endorsement of the specific equipment referenced or the OEM.


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