Transient phenomena can significantly affect the accuracy of pipe-to-soil potential (PSP) measurements. operator has developed a simple method to improve the accuracy of cathodic protection close interval
measurements through the use of continuous dataloggers at reference locations within the survey area. One pipeline survey (CIS)
Keywords: cathodic protection, telluric current, telluric activity, geomagnetic disturbance, baseline potential, waveprint, global positioning satellite (GPS)