Industrial radiography is a long established effective Non Destructive Testing (NDT) method which is a very versatile diagnostic tool.
Radiographic images are formed by passing ionising gamma or X radiation through the piece to be examined on to a radiographic film on the remote side of the test piece. A contrast greyscale image is formed as a result of attenuating factors in the material such as thickness changes caused by internal defects.
Ultrasonic flaw detection locates internal discontinuities in metals, plastics, and ceramics.
Sound waves are reflected from flaws and can be located, identified and sized from reflector signal information displayed on the portable instrument screen.
Remote Visual Inspection of Hygienic Tubing
Borescope inspection is defined as an inspection of internal parts such as the root passes of butt welds in pipe, tubing and other normally inaccessible areas.
MTI uses flexible optical fibre borescopes with CCTV camera at distal end, incident light delivery through the optical fibre bundle, and image viewing through an 8" TFT LCD screen. All way articulation of 90 degrees is operated from the control unit. Borescope lengths are up to 7.5m.
Optical distal tip adaptors are used to make the field of focus 1mm to 100mm. The field of view is 100 degrees forward and lateral, and the magnification on the 8" TFT screen is 17x.
Magnetic Particle Inspection
Magnetic Particle Inspection (MPI) is a very effective method for location of surface breaking and slight sub-surface defects such as cracking, pores, cold lap, lack of sidewall fusion in welds etc in magnetic materials.
Liquid Penetrant Inspection
Liquid Penetrant Inspection LPI (also known as Dye Penetrant Inspection DPI) is an effective method for location of surface breaking defects in materials with smooth non-porous surfaces such as stainless steels and other metals not prone to surface oxidation. There are many different techniques available with this versatile and sensitive NDT method.
Ferrous Tube Inspection using Dinsearch 1-00
DINSEARCH 1-00 is an electromagnetic system for rapid, high resolution inspection of carbon steel tubes in heat exchangers, coolers, boilers and similar equipment. The probe is pushed and pulled through each tube in turn and signals are displayed which show the state of the tube.
Corrosion under Insulation
Corrosion under insulation (CUI) in piping is difficult to find because it is not immediately visible. Insulation is expensive to remove and replace. MTI uses profile radiography in pipework up to 10" diameter to gather an image of the pipe wall without removing the insulation.
Acoustic Emission Testing
Acoustic Emission (AE) is defined as "the transient elastic wave generated by the rapid release of strain energy within a material".
In the case of pressure vessel testing, the test item is stimulated by pressurising the vessel contents or by hydrotest. Under this stimulation, any 'active' defects which are growing will emit acoustic energy and are located and graded for examination by conventional NDT.