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re: Pipeline Inspection & Magnetism
Posted on 10/16/16 at 3:18 pm to Tridentds
Posted on 10/16/16 at 3:18 pm to Tridentds
What do you mean?
Is the magnetic particle within the base steel, or is it like a small magnet attached to the outside?
If attached to the outside, it would depend on the inspection technique, and relative size of object.
Is the magnetic particle within the base steel, or is it like a small magnet attached to the outside?
If attached to the outside, it would depend on the inspection technique, and relative size of object.
1
Posted on 10/16/16 at 3:28 pm to LSUtigerME
quote:
Is the magnetic particle within the base steel, or is it like a small magnet attached to the outside?
Yes, it would be on the outside. A series of magnetized BBs put into a row for identification.. Kind of a marker for use during inspection.
As I understand it a hairline crack is seen because it interrupts the "flow" of a charge from the inspection device. Software determines the severity by interpreting the results.
Do you have experience with these types of inspections? Basically trying to size a magnet. The smaller the better so looking at BBs, and Triple BBS, etc... Can go larger but trying to see what might be smallest that would be seen by a reasonably sensitive inspection device.
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