MFL is the standard screening tool for examining in-service above-ground storage tank floors for corrosion during API-653 inspections. Both top-side and bottom-side corrosion, as well as other damage resulting in material loss can be detected. Significant strides have been made in recent years regarding calibration and operator qualification. Equipment functionality and sensitivity has also improved. As MFL is not a quantitative method, it only "flags" areas where material loss is detected. Ultrasonic thickness testing is required to "prove-up" the MFL finding and determine the severity and extent of any material loss detected. Contact us today to discuss your tank inspection needs, MFL may be the right tool for you.