[4A10] Development of magnetic eddy current sensor for online corrosion monitoring of ferromagnetic pipelines
W Rukhshinda
London South Bank University, UK
Corrosion is one of the major reasons of failures of steel pipes in the oil and gas industry. Therefore, inspection methods such as ultrasonic and magnetic flux leakage are used for the monitoring of corrosion in order to reduce the risk of failures. Some of these methods have been adapted for installed sensor systems rather than inspection, as these reduce the necessity for access to the pipe. An adaptation and analysis of the magnetic flux leakage method for an installed corrosion sensor is using an eddy current magnetic sensor, which is described here. The optimisation of the sensor is carried out using finite element simulations and testing is done on plates of different thicknesses and corroded pipe samples to investigate the efficiency of the sensor for corrosion detection. The results of the sensors are compared with ultrasonic thickness tests. An accelerated corrosion on plate sample with installed sensor is carried out. The results and possibility of using the sensor for continuous corrosion monitoring are discussed.
