T.D. Williamson Inc. (TDW) has developed a new 48-in. (122-cm) Gas Magnetic Flux Leakage (GMFL) inspection tool.
Offshore staff
TULSA, Oklahoma -- T.D. Williamson Inc. (TDW) has developed a new 48-in. (122-cm) Gas Magnetic Flux Leakage (GMFL) inspection tool.
The tool’s magnetizers “float” individually so that magnetic forces are consistent whether in a thick or thin wall, or a tight bend. By reducing tool drag, floating magnetizers enable more consistent velocities. Traditional MFL tools have coarse steel brushes that magnetize the pipe wall (so that sensors can read magnetic loss levels). These are replaced in a GMFL tool with smooth, flat wear skid plates that glide more easily. The tool’s design allows for as much as 25% bore reduction and is constructed of lighter weight materials, making the TDW GMFL tool approximately half the weight of other 48-in. tools.
