WBPC 2019 Abstract #10:
Corrosion is a constant challenge in the Oil & Gas industry, especially in ageing and insulated pipelines. This presentation focuses on how the MEC (Magnetic Eddy Current) technology is able change the way pipelines and storage tank floors are being inspected and how its application can fill inspection gaps in the industry.
MEC is the next generation and a further development of the fast corrosion screening SLOFEC technique. Operating on a high frequency Eddy Current field with a controlled direct current magnetic field and specially developed sensors, MEC is able to achieve a high sensitivity in detecting internal and external defects such as pitting and corrosion in ferromagnetic and non-ferromagnetic materials including through the typical coatings. Internal and external defects such as individual pitting and corrosion can easily be detected by the MEC technique.
The following case studies on the application of MEC shall be presented:
- Onshore pipelines, Pressure Vessels
Non-bonded CRA-clad pipelines, difficult to be cleaned pipelines, heavy wall dry pipelines and non-metallic lined pipelines are assets that are currently not inspectable by the typical in-line inspection tools based on the Ultrasonic and Magnetic Flux Leakage techniques. Innospection MEC inspection tools overcome these inspection challenges. MEC reliability, extremely high POD (Probability of Detection), and scanning speed make MEC inspection a cost effective alternative also for standard pipe and pressure vessel inspections.
- Storage Tank Floors
The MEC technique have been proven in the field to offer enhanced defect detection and overcoming the following tank inspection challenges:
- Inspection without the need for coating removal, hence saving time and cost
- Inspection of tank annular plates with higher plate thickness without the need for Ultrasonic verification
- Ability to scan directly next to welds and overlapped welds in lined tanks