InterSpec: Environmental Inspection Services
  • Guided Wave

Guided Wave

Guided wave testing is a cost-effective method for rapidly surveying a pipeline using low-frequency ultrasonic waves generated from a single test location. The corrosion wall loss and cracks in aboveground, buried, and insulated pipe can be detected, and their locations and sizes can be estimated.

This saves downtime as well as cost in testing and evaluating pipelines since insulation may be left intact and larger sections of piping may be evaluated.

Guided wave testing enables keeping product in pipes, and pipelines remain in service. This is very convenient and skips the hassle of draining the pipelines.

Guided wave can also be used to identify stress cracks in steel plates (storage tanks). An industry leader, InterSpec has been the first to utilize the MsS guided wave technology for testing tanks. This magnetostrictive sensor technology uses acoustic guided waves to detect flaws in:

  • Pipelines
  • Steel cables
  • Anchor rods
  • Heat exchanger tubing
  • Metal structures


  • Inspect any pipe size of 0.25-inch to 60-inch outer diameter.
  • Operate any frequency between 8 kHz to 250 kHz. Operations at high-frequencies can reduce the near-field zone (including the dead zone) less than 0.5 ft.
  • Inspect and monitor road-crossing pipelines, oil, gas, petrochemical, power companies, and other industrial piping systems.
  • Inspect Underground piping and covered pipes, such as insulated pipes.
  • Check pressure vessels and stainless steel tanks for stress chloride cracking.

Structural Health Monitoring (SHM)

Can be permanently installed for long-term monitoring of large areas for data collection and detects changes over long time periods.

Utilized by: United States, Japan, Korea, Indonesia, Thailand, Taiwan, Venezuela, Mexico, India, Tobago, Algeria, South Africa, Canada, Italy, Saudi Arabia, United Arab Emirates, France, Romania, and England.