The benefits of guided wave testing (GWT) can be magnified if multiple collections from the same sensor in the same position can be compared and analyzed together. This allows:
- The state of the structure to be regularly monitored for changes in a semi-automated way
- More accurate separation of environmental effects (for example areas of frozen insulation) from real defects
- Collections to be performed by less trained personnel (only requiring a fully qualified inspector when the sensor is first installed)
In addition to the safety implications of site access, the nominal access costs to the pipe can often account for a large fraction of the inspection cost, so recurrent testing for monitoring pipe conditions can, therefore, be costly and carry risks.
