Other Methods

Alongside Radiography and Ultrasonic Non-Destructive Testing – we also provide additional methods of testing better suit for other needs.

The latest in optical technology, Through-Indenter-Viewing (TIV), enables us to perform mobile hardness testing that offers more trust-worthy results than testing with more traditional equipment.

Covering hardness, replica, and dimension measurements, Spective Technical Services testing provides dependable results on a vast range of materials including those without calibration, thin components, hardened surfaces, and elastic materials.

Magnetic Flux Leakage (MFL) testing is a prompt process used to identify problematic areas in a tank floor that can be accurately evaluated with Ultrasonic Testing (UT).

MFL, with the assistance of tank floor mapping, uses a strong magnet to cause a magnetic field that detects volumetric changes in material. On a corrosive spot, a leakage field will emanate. The larger the corrosion, the larger the leakage field.

Spective Technical Services makes use of the Silver Wing Floormap MFL 2000, the most up-to-date and cutting edge computerized piece of equipment available for tank floor mapping.

The Silver Wing Floormap MFL 2000 tank floor scanner utilizes magnets to deliver an enhanced performance in the inspection of thicker bulk liquid storage tank floor plates that are 10mm and above.

The device’s ergonomic mechanical design lets the magnet carriage break off from the floor with little-to-no effort, regardless of its high amount of magnetism. An onboard computer receives the full data acquisition of signals detected by MFL and creates a report with any defects mapped out. These defects are then sorted in order of severity and is fully customizable.

The cross-checking of pitted areas with an ultrasonic technique will show you the material loss with a display of plate thickness and will verify MFL banding.  If there are any variations between the MFL and ultrasonic results, it is soon corrected for in the reporting software. It can detect under-floor conical pit or lake-type corrosion represented by an artificial reference hole 40% deep. In an ideal setting, pitting of approx. 20% loss in a 6mm plate can be identified and sized.

The Silver Wing Floormap MFL 2000 also includes a manual mode for when you need to inspect floor thicknesses of 12.5mm – 20mm. Unfortunately, it is not possible to map out the corrosion of plates thicker than this due to the lower flux levels induced in the plate. It can detect corrosion 50% deep or greater in material up to 15mm thick, and between 60 – 70% deep in materials up to 20mm thick. Another NDT method is then advised to better quantify the material loss.

Penetrant Testing (PT) is a wonderfully powerful surface analysis technique for the remarkably low cost. It can detect cracks and other surface breaking flaws. Special equipment is available for the testing of turbines, compressors, and pumps.

Spective Technical Services offers a considerable amount of experience in the area of tank conditions, especially with tank bottoms and shells. Both are critical to the reduction of economic and environmental risks. Our non-destructive testing (NDT) results in improved safety in the storage of dangerous goods in tanks at both existing and new installations.

For the inspection of tank bottoms, Spective Technical Services can supply fast, decisive results by combining Magnetic Flux Leakage (MFL) and Ultrasonic Testing (UT) techniques.

MFL, facilitated by tank floor mapping, operates a strong magnet to cause a strong magnetic field that detects volumetric changes in material. On a corrosive spot, a leakage field will arise. The larger the corrosion, the larger the field. After MFL inspection is completed, the suspect areas of the tank floor come to surface and are then quantified by more accurate Ultrasonic Testing (UT).

Positive Material Identification (PMI)

Positive Material Identification (PMI) is when a material is verified to correspond with its’ specification. The PMI is not to be used with an item with no material certificate (each PMI machine has their own characteristics).

The Spectrotest is an extremely accurate machine which is used for materials with an L or H grade as well as: aluminium, Inconel, Incoloy, Hastelloy, and low-alloy steel. It can also identify carbon content and all results can be recorded.

To utilize the machine to its fullest extent – it is best to calibrate prior to use. The machine weighs 75kg and is not designed to be used in heights or confined spaces.

In contrast to the Spectrotest – the Sprectrosort works only with stainless steels with no L or H grade, alongside low-alloy steels. The Spectrosort also doesn’t identify carbon content. As opposed to the Spectrotest – the Spectrosort is fully portable and lightweight.

Like the Spectrotest, it’s necessary to perform a calibration to fully optimize the machine for effective testing. With a prolonged battery life which supports up to 3 hours of continuous testing before needing to change – the Spectrosort is fully compatible with working at heights and confined spaces and is suitable for site work.

Another lightweight and fully mobile piece of technology – the Thermo TN Alloy Pro is used on stainless steels with no L or H grade, incoloy, Inconel, and low-alloy steels. It is particularly great with testing welds, nuts, bolts, powders, and turnings. It does not identify carbon content.

Like the Spectrosort – it is of great use when working with heights and onsite. It supports an impressive 6 hour battery life before needing charged again and all results can be stored and printed.

Magnetic Particle Inspection (MPI) is used on cut and skewed pipe ends before the welding process to ensure that there are no parent material flaws. MPI is also used for the detection of surface level cracks after grinding or machining operations.