As instances of stress corrosion cracking persist, the established Electromagnetic Acoustic Transducers (EMAT) system is still the preferred pipeline inspection technology.

The EMAT essentially generates an ultrasonic pulse into the test subject indicating, or not, an occurrence of cracks or coating disbondment. Although the crack and coating detection technology has been around since the early 2000s, companies like The Williams Cos. Inc. (NYSE: WMB) are still seeing the system emerge and transcend.