MFL TANK FLOOR SCANNING
Tank floor MFL scanning is a non-destructive testing method that generates a more thorough and complete inspection of the tank floor and walls. A strong magnetic field is used to detect pitting and corrosion in carbon plates on both top and bottom surfaces. This magnetic field is created by strong magnets in close proximity to the carbon steel floors. The magnetic field leaks from the steel where there is pitting or corrosion and a sensor alerts the technician of the discontinuities. The scanner is dragged over the entire surface of the floor, and areas of concern are verified with ultra sound to obtain wall loss readings.
ADVANTAGES
- Thorough inspection of floors in a short period of time.
- Reliable and economical results.
- Access to only one side of tank floor is needed.
- Can scan through most coatings
Limitations
- UT (ultrasonics) is required to verify wall loss of defects.
- Does not decipher which side the wall loss is on.
- Inspection access is limited to areas without components which are close or attached to the floor.
- Tank Floor condition is vital to the integrity of inspection. Scale build up and debris will prevent accurate readings. Tank floors must be freshly cleaned and free of all debris.