Ecoglobal was established in the year 2003 with a view to give quality and prompt service in the NDT field.
Ecoglobal was established NDT specialists, all of them were trained to the highest NDT standards to enable optimal application of carefully controlled NDT procedures and to meet stringent testing standards.
Ecoglobal up to date is holding the latest advanced equipment for weld inspection.
With Phased Array & Tofd we inspect sea-line and pipeline off-shore and on-shore, manual, automatic or semi-automatic welds.
With Ground Pipeline Drone we measures diameter reductions in pipelines such as dents and ovalities. Even diameter variations like girth-welds, wall thickness changings, T-pieces, valves and other installations are detected.
Automatic Ultrasonic System Pipe Wizard Phased Array
Automated ultrasonic (AUT) is more reliable, faster, has better detection of critical Lack of Fusion defects in pipeline construction welds, and poses no safety hazard compared with radiography.
Phased arrays also present major improvements over conventional multi-probe ultrasonic, both for onshore and for offshore use.
Probe pans are lighter and smaller, permitting less cutback; scans are quicker; phased arrays are considerably more flexible for changes in pipe dimensions or weld profiles, and for different scan patterns; phased arrays can perform “specials”, such as inspecting seamless pipe of variable wall, clad pipes, thick and thin sections, and use automated set-ups.
Compensating for variations in seamless pipe wall thickness.
Wedge temperature compensation.
Small diameter pipes inspection.
Clad pipe inspection.
Portable phased arrays for tie-ins and repairs.
Phased arrays use an array of elements, all individually wired, pulsed and time-shifted.
These elements are typically pulsed in groups of ~16 elements at a time for pipeline welds. In order to make a user-friendly system, a typical set-up calculates the time-delays from operator-input, or uses a pre-defined file calculated for the inspection angle, focal distance, scan pattern etc.
The time delay values are back calculated using time-of-flight from the focal spot, and the scan assembled from individual “Focal Laws”.
From a practical viewpoint, ultrasonic phased arrays are merely a method of generating and receiving ultrasound. Consequently, many of the details of ultrasonic inspection remain unchanged; for example, if 7.5 MHz is the optimum inspection frequency with conventional ultrasonic, then phased arrays would typically use the same frequency, focal length, and incident angle.
Phased arrays permit combining electronic scanning, sectorial scanning and precision focusing to give a practical combination of displays. Optimum angles can be selected for welds and other components, while electronic scanning permits fast and functional inspections. For zone discrimination scans of pipeline welds, specific angles are used for given weld geometries.
Several pipeline (4 inch to 58 inch) off-shore and on-shore has been tested using workmanship and E.C.A criteria by Ecoglobal AUT technicians during the last decade, the complete list is available on demand.
Phased Array/ TOFD
The Phased Array Ultrasonic Testing (PAUT) and Time of Flight Diffraction (TOFD) technologies have made rapid changes in inspection and reliability in various industries.
These ultrasonic testing techniques are rapidly replacing conventional radiography. A major advantage in replacing RT with PAUT & TOFD is reducing the radiation risks apart from increased probability of detection (POD), production rate and better sizing of the discontinuities.
Although TOFD is more often utilized for inspecting welds with simple geometry and fine grain steels, such as welds with thicknesses from 8 mm to 300 mm, it is useful (in combination with Phased array) in inspecting more complex geometries.
Defects like cracks, lack of penetration, lack of fusion, porosity, and slag in welds of pressure vessels could be diagnosed via this technique very precisely.
The principle and operation of TOFD is based on diffraction of ultrasonic waves on tips of discontinuities, instead of geometrical reflection on the interface of the discontinuities. When ultrasound is incident at linear discontinuity such as a crack, diffraction takes place at its extremities in addition to the normal reflected wave.
The technique also can provides a combination of various scans in the same equipment set-up. B-Scan is a side view, C-Scan is a top view and the S-Scan is a cross-sectional view.
Combined TOFD and Phased Array Technique It is common in Non-Destructive Testing that one NDT technique does not fit in to fulfil all tasks.
TOFD has a certain dead zone at the surface and near Back wall also. Additional techniques need to be used to ensure coverage of these areas, the combination between TOFD and Phased array perfectly complete (100%) the inspection.
Electro Discharge Machining
CALIBRATION BLOCKS CONSTRUCTION
Ecoglobal is also specialized in the manufacture of calibration blocks for Ultrasonic and Eddy Current Testing.
Using appropriate electro-discharge machines Ecoglobal manufacture different configurations of artificial defects with a high level of precision, with tolerances in the range of 0.01 mm.