services

Close Interval Surveys (CIS) – also known as pipe-to-soil and potential gradient surveys – are one of several methods for assessing effectiveness of cathodic protection (CP) systems used on buried pipelines.

DCVG Surveys.  Sophisticated electronics detect signal voltage gradients to provide rapid visual interpretations at defect locations. An easy-to-read meter panel and the convenience of several scales permits speedy location and assessment.

Alternating Current Voltage Gradient (ACVG) surveys are used for an indirect inspection tool as part of the ECDA program on the line. Through the use of Pipe Current Mapping PCM, which through the use of this trasmitter can pin-point coating anomalies and evaluate the protection of the pipe coatings. This process is very similar to the DCVG process except ACVG evaluates the coatings on pipelines by using a signal generator for alternate current.

Pig Tracking and Sub-Centimeter AGM Benchmarking.

Above Ground Marker (AGM)
Setting & Pig Tracking 

External Corrosion Direct Assessment
(ECDA) is a structured process used to evaluate buried onshore ferrous pipeline integrity. The ECDA goal is to enhance safety by managing the risk of pipeline corrosion failures while minimizing the cost required for excavations and repairs. ECDA may also be used when more established methods such as in-line inspection (ILI) and pressure testing are not possible or not practical. NACE Standard Recommended Practice on Pipeline External Corrosion Direct Assessment Methodology (RP0502-2002) describes the ECDA process as allowing "...the prediction of susceptible areas where corrosion activity has occurred, is occurring or may occur."

Cathodic Protection Specialist Services. We provide cathodic protection services throughout the United States. CMTS provides the technical expertise and the field experience required for pipeline operators to maintain the integrity of their pipeline systems. We employ NACE certified technicians to manage any project size.