Service Assurance

Digital Radiography/Computed Radiography (DR/CR)

Digital radiography uses an X-ray digital image capturing device (Detector). This technology enables us to generate immediate and high-quality X-ray images while keeping radiation levels to the minimum. Once generated the X-ray image is displayed on a tablet immediately, then using the user friendly proprietary software the image can be processed, enhanced, shared and digitally store and accessed on the spot

Phased Array Ultrasonic Testing (PAUT)

This inspection technique is utilized by our team to inspect large volumes of welds and material from a fixed location allowing otherwise difficult geometrics to be inspected.

The visual display of combined A-Scan, B-Scan, C-Scan and S-Scan gives a simplified understanding of flaw type and associated dimensions.

Time of Flight Diffraction (TOFD)

This is an ultrasonic technique is efficient and cost effective for non-intrusive examination of plant equipments. It however relies on time-base, low energy diffracted signals from the tip of the flasws, allowing an exact or absolute position for the flaw to be measured and imaged

We use this techniques for these reasons:

• Speed of detecting discontinuities.
• Accurate positioning of discontinuities
• No radiation emitted.

Short Range Ultrasonic Testing (SRUT)

SRUT is a technique which uses low frequency sound waves to flood thin wall material and then reflect back at interfaces such as cracking or corrosion/pitting

SRUT is applied in these scenarios:

• Tank floor annular plate testing, tank dyke piping interface.
• Testing concrete interfaces
• Scaning under vessel supports, testing under pipe supports interfaces, and similar difficult to access locations

Corrosion Mapping Using OMNISCAN /HYDROFORM

HydroForm probe is a localized immersion technique held in an automatic scanner in order to create corrosion mapping images. The Hydroform can produce a 60mm wide effective beam corrosion images and can scan at a speed up to 100mm/s.

The corrosion mapping images contains useful information about the spatial extent of the corrosion as well as the ligament left between the corrosion and the test surface. Corrosion mapping will reveal the presence of corrosion pits that would be mission in point ultrasonic thickness measurements. Also it makes use of water as a couplant between the probe and the testing surface in order to transmit the ultrasonic sound into the examinaion surface.

Valve Ultrasonic Leak Testing

Ultrasonic Thickness Measurement (UTM)

Eddy Current Testing (ECT)

Pulsed Eddy Current

The probe is held close tot he surface of the steel under examination, and a current is passed through one of the coils. This generates a primary magnetic field within the steel. The current is then switched off and the steel demagnetizes. The sudden change in magnetic field strength produces electrical eddy currents in the steel that give rise to a secondary magnetic field. This is picked up by the probes second coil as an induced voltage.

MFL Floor Tanks Inspection

Valve Servicing