APPLICATION

Magnetic flux leakage is a magnetic method of nondestructive testing that is used to detect corrosion and pitting in steel structures, most commonly pipelines and storage tanks. The basic principle is that a powerful magnet is used to magnetize the steel. At areas where there is corrosion or missing metal, the magnetic field "leaks" from the steel. In an MFL (or Magnetic Flux Leakage) tool, a magnetic detector is placed between the poles of the magnet to detect the leakage field. Analysts interpret the chart recording of the leakage field to identify damaged areas and to estimate the depth of metal loss, MFL can be used in the range of 6 to 12 mm all ferromagnetic tank bottoms . Furthermore, limited coated surfaces can easily be tested.

The Floormap system produces a detailed geometrical view of the inspected area. This view immediately provides the operator with an understanding of the tank bottom – basically the operator can determine the nature and geometry of the indication meaning the following questions can be answered; is the indication due to a weldment or corrosion? Is the indication wide or deep?.

The Floormap introduces a new high contrast plate view based on the intensity of the MFL signal response. The MFLi defect map uses multiple colour palettes to highlight areas of corrosion, reduce the effect of spurious indications and can be used to classify defect type.

This powerful detection and classification tool can reveal the presence of small diameter pitting, SRB attack, erosion patterns and other features that require further verification.

APPLICATION

Dry-coupled remote access ultrasonic crawler system brings major efficiency and data improvements to the inspection of structures such as storage tanks, vessels and offshore installations. Scorpion CRAWLER is equipped with the best ultrasonic electronics and software the industry has to offer. With its advanced filtering, the system can inspect materials ranging from 5 to 100 mm (0.2 to 4 in) faster and more accurately. The software allows for unique UT gate processing, such as floating and tracking gates, ensuring correct wall thickness measurements under most circumstances.

The battery-power crawler is designed to go where no man can go. Crawler handling is minimized with simple controls and long umbilical, when combined with a speed of up to 180 mm/sec (7 in/sec), allow the completions of inspections faster and more efficiently.

APPLICATION

The application of acoustic emission to non-destructive testing of materials typically takes place between 100 kHz and 1 MHz. Unlike conventional ultrasonic testing, AE tools are designed for monitoring acoustic emissions produced by the material during failure or stress, and not on the material's effect on externally generated waves. Part failure can be documented during unattended monitoring. The monitoring of the level of AE activity during multiple load cycles forms the basis for many AE safety inspection methods, that allow the parts undergoing inspection to remain in service.

AE-testing is a method for screening active corrosion and active leakage in storage containments. The test method exploits acoustic emissions of corrosion process or leaking medium. It is a non-intrusive method without the need of opening and cleaning the storage containment prior to inspection. The result of an AE-test poses a recommendation for a maximum operation period until a subsequent inspection is necessary.

• • API 510 for pressure vessel inspection
  • API 570 for piping inspection
  • API 653 for tank inspection
  • AWS-CWI for weld examination
  • NACE CP for cathodic protection assesment
  • NACE CIP for coating inspection