Meet the Elite Fire Tube Scanning System

Elite Energy Services has developed the internal MFL pipe scanning system.

1
2
3
4
1

The wheels are custom fitted for each scanning head to allow a specified distance between the scanner and the metal.  This allows highest accuracy in determining the level of corrosion on the fire tube.

2

A specially designed pole is able quickly attach to the scanning head to move the scanner in and out of the fire tube.  This pole can be different lengths depending on whether the fire tube is in a vertical or horizontal heater treater.

3

The encoder wheel measures the distance the scanner moves into the fire tube.  This creates the ability to know the exact location of the corrosion inside the fire tube.

4

The large handles on the scanning head are used to remove the scanner from the metal.  The magnetism created is very powerful and requires leverage to remove it from the surface.

What is MFL?
MFL stands for Magnetic Flux Leakage testing. It uses a combination of magnets and sensors to determine defects in carbon steel by measuring the resistance as the scanner passes over the steel wall. MFL technology has existed for about 15 years and is commonly used to scan tank floors and down hole pipe testing. Elite Energy Services harnessed this robust technology and worked with vendors around the world to build an application specifically designed for fire tube scanning.

What is unique about the scanner?
The Elite MFL Tube Scanning system is purpose-built for the inspection of fire tubes – the first of its kind. Our sensors and magnets are curved specifically to the inside of a fire tube, allowing us to efficiently determine the levels of corrosion and areas of weakness. The scanning heads are custom made for multiple I.D. (inside diameter) fire tubes, and this makes the system extremely accurate (+/- 3%).

How do we use magnets to measure the corrosion in a fire tube?
When magnets pass over the metal, the force of the magnets create resistance in the carbon steel. When there is corrosion in the steel, it causes defects, and the metal in the affected area becomes thinner. This causes less resistance when the magnets pass over. The sensors then measure the resistance – and software translates that information into a numerical format, which is then calculated to determine the remaining wall thickness. Our software produces an image, giving our customers a visual representation of the orientation and location of corrosion on the fire tube. These readings are instantaneous and allow our operators to quickly diagnose the corrosion damage on the fire tube.