Magnetic saturation significantly affects the accuracy of Magnetic Flux Leakage (MFL) tools during in-line inspection by limiting the tool's ability to detect and size defects accurately, particularly deep or closely spaced flaws. MFL tools work by magnetizing the pipeline wall to near saturation using powerful magnets. When a defect, such as corrosion or a crack, is present, it disrupts the magnetic field, causing some of the magnetic flux to "leak" out of the pipe wall. Sensors in the tool detect this leakage flux, which is then used to identify and characterize the defect. Magnetic saturation occurs when the magnetic field strength in the steel reaches a poi....
Log in to view the answer
