Smart pigs and other mechanical devices are a great tool but with significant limitations.
Most smart pig companies are located in Texas therefore companies need to pay and wait for a unit to be shipped to their location. Whereas KPI dogs can be sent to the job site in a shorter amount of time with an overall lower cost of services.
Technology such as smart pigs have limitation of use with small diameter pipe, turns in pipeline, or lines with varying diameter. KPI detection dogs can work on any distance or diameter of pipeline.
Smart pigs detect potential areas for leaks and can record false positives or even miss leaks. KPI detection dogs are highly trained and capable of locating pinhole leaks and cracks in pipeline. A well trained pipeline detection dog can detect at 99.9%.