Conventional NDT
 
QTech Advanced NDT Services :

LRUT (Long Range Ultrasonic Testing)
By fitting a ring of transducers around the pipeline, a wave maker device directs low frequency (20-100 kHz) ultrasonic waves via the transducers, longitudinally into the pipeline wall. The method effectively detects changes in the pipeline’s cross-section, enabling it to indentify corrosion and other abnormalities. At the same time this provides the possibility of using welds and flanges as distance references.

Inspecta has qualified experts in using this method to help you get a cost-effective report on the condition of your pipelines.

The test results are displayed in an easy-to-interpret visual interface on a laptop computer – enabling us to draw conclusions quickly and correctly. Upon identifying a defect we carry out follow-up detailed testing of the affected area, using complementary ultrasonic or x-ray methods.

With this highly advanced testing method you will get an accurate status report of your pipelines in the most effective way.

Benefits of  LRUT :

  • More than 100 times faster than traditional ultrasonic methods
  • Up to 100 meters screening distance on pipelines above ground
  • Up to 10 meters screening distance on pipelines buried in the ground
  • Possibility to do sub-sea scanning
  • Saves time since there is no need to remove insulation, apart from 1 meter for the transducer ring.
  • Easy to screen wall penetrating pipelines (both built-in and sleeved penetrations)

Corrosion Corrosion Mapping (UT C-Scan & B-scan)
Corrosion Mapping Provides precise thickness measurement and a virtual picture of the damage. It produces repeatable images displaying in top views (C-Scan) and sectional views (B-scan).

Technique capability: 
  • Ferrous & non ferrous materials  can be inspected Accuracy of  measurement is ± 0.2mm.
  • Scan speed of 100 mm X 50 mm per Second.
  • Phased Array Ultrasonic Testing (P.A.U.T):
    Phased array ultrasonic testing uses multiple elements to steer, focus and scan beams with a single transducer assembly. Beam steering, commonly referred to sectorial scanning, can be used for mapping components at appropriate angles. This can greatly simplify the inspection of components with complex geometry. The ability to test welds with multiple angles from a single probe greatly increases the probability of detection of anomalies.
    Technique capability: 

  • Ferrous & non ferrous materials can be inspected.
  • Inspection in limited access area, where there is limited access for  raster scanning.
  • Inspection speed In a linear scanning whole weld area will be inspected, which tremendously reduces   the inspection time.  High probability of defect detection.
  • Time of flight Diffraction Ultrasonic Testing (ToFD):
    TOFD technique is a real time imaging system that produces a cross sectional view (D-Scan) of the material tested. Two compression wave angled probes were placed in a pitch and catch configuration with a fixed Probe Center Separation (PCS), with one probe as the transmitter and the other as receiver. Defects are detected by the diffracted ultrasound wave occurring at the edges of defects..
    Technique capability: 

  • Ferrous & non ferrous materials can  be inspected. Precise defect sizing.
  • High probability of defect detection.
  • High speed weld inspection.
  • High speed cladding surface corrosion  screening.
  • Alternative Current Field Measurement (A.C.F.M):
    ACFM is an electromagnetic testing capable of detecting and sizing surface breaking cracks in metals. The basis of the technique is that an alternating locally uniform current is induced to flow in the component being tested. Defect detection and sizing is based on the disturbance of uniform current due to the surface breaking cracks.
    Technique capability: 

  • Length & depth of the defect can be measured accurately paint and other protective coatings several millimeters can be left on.
  • The primary advantage is that little or no surface  preparation is need for a test.
  • All data can be stored for audit
  • Remote Visual Inspection (R.V.I ) :
    RVI tool(camera) was send through the small opening of the remote places and the internal images were sending back to the inspector’s observation screen, were the inspector can inspect & record the images.Test report is given with cd of recoded inspection video.
    Technique capability: 

  • Only non ferrous tubes can be inspected. Detects discontinuities such as corrosion, erosion,wear, pitting, baffles cuts & cracks.
  • Inspection speed 2m/s.
  • Productivity 800 tubes per shift (based on  site condition may differ)
  • Internal Rotary Inspection System (I.R.I.S):
    IRIS is the most instructive tube inspection method. This advanced inspection uses ultrasonic technology to measure wall thinning and pitting due to corrosion and erosion in the tubes.
    Technique capability: 

  • Both ferrous & non ferrous materials can be inspected. Detects general wall thinning such as corrosion & erosion and localized defects such as pitting, wear scars.
  •  Measures the absolute  wall thickness of the tube. Inspection speed 2inch/s.
  • Productivity 80 tubes per shift (based on site condition may differ).
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    Tel: +966 13 802 9153, Fax: +966 13 802 9031.
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