Integrity NDT supply comprehensive Asset Management Services to support our Refinery clients. Working closely with our client engineering teams to support their inspection needs, with an innovative approach to providing inspection solutions. We have the plant inspection experience and offer an inspection management ‘package’ approach, providing support from planning through to the management of the final inspection results.

We provide Shutdown Management Software

Shutdown ‘turnaround’ inspection management. We utilise QUARTSITE, our project management software, to which we upload the planned work scope. The project software is designed specifically to manage inspection activities, controlling and storing the related information and documentation typically generated during large shutdown project works, Inspection Report generation/task status tracking.

We provide surface preparation operatives

Pre-inspection surface preparation. By managing the surface preparation activities directly, we ensure adequate and cost effective surface preparation is achieved, essential to main inspection applications, from standard surface inspection methods MPI and DPI, to Manual and Advanced Ultrasonic tasks. Using a dedicated team of operatives under direct instruction and guidance from our Engineering team we not only add to the inspection quality but also make considerable cost savings by our direct management/control policy.

We provide Inspection solutions

Conventional and Advanced Inspection Application Solutions.

To answer our client’s requirements, we provide novel conventional and advanced inspection methods, have significant experience in shutdown activities and applications, and take particular pride in our achievements and positive feedback from our clients with regard to our successes in the field.

We employ AUT applications; TOFD/Phased Array/Supplementary MUT typically on high pressure and sour service plant, including column and reactor vessel circ/seam weld inspections.

Our main services to refineries are;

From our extensive experience of the fabrication and in-service inspections of heavy wall pressure vessels such as Reactors, Drums, Heaters etc, Integrity NDT have formulated a proven approach to the selection of inspection applications, specific to the detection of both fabrication and in-service defect flaws.

Hydrogen damage and related HTHA defect mechanisms are always of concern and a focus to Refinery Plant Engineers and Managers. Integrity NDT have significant experience in this area and specifically with regard to the early detection of hydrogen damage.

Main inspection methods are:

  • TOFD inspection
  • Phased Array UT
  • Ultrasonic Back Scatter Technique
  • Ultrasonic Velocity Ratio Measurement
  • Spectrum Analysis
  • Metallurgical Investigation (Replication)
  • Detailed information about inspection techniques are given in NDT Services Section.

Heavy Wall Vessel TOFD

Heavy Wall Vessel TOFD

Integrity NDT provides ultrasonic TOFD (Time of Flight Diffraction) inspection services for sphere vessel fabrication welds in-service inspection.

This very sensitive and fast inspection technique was adapted for long range inspections with the special designed Integrity I-Scan ultrasonic scanner and 36m long umbilical to carry out inspections from outside of the tank.

To avoid scaffolding requirement, Integrity NDT works with highly experienced IRATA Level 3 and Level 2 certified rope access technicians, who had also NDT ability.

One of the best advantage of this system is the online inspection opportunity. That reduce the cost of inspection and required time massively.

Integrity NDT can help ensure the safe operation of your vessel. Our extensive experience can help you to maximize your equipment availability and efficiency.

Detailed information about inspection techniques are given in NDT Services Section.

Rope Access TOFD Inspection

Rope Access TOFD Inspection

The ultrasonic inspection of Austenitic welds presents many issues which need to be fully understood when developing an inspection strategy. Inspection techniques must be developed specific to the parent and weld materials, and weld joint geometry.

Welds in Austenitic materials produce a large columnar grain structure which cannot be refined by heat treatment. This inhomogeneous weld structure results in anisotropic ultrasonic behaviour (opposed to welds in Ferritic materials which produce refined grains resulting in isotropic ultrasonic behaviour). This weld structure impacts on the ultrasound in many ways, resulting in:

  • High levels of ultrasound attenuation
  • Increased noise levels
  • Ultrasonic beam scattering
  • Ultrasonic beam bending
  • Ultrasonic beam skewing
  • Beam bending/skewing at the weld/parent interfaces
  • To best manage and overcome these many issues requires not only the use of specialist ultrasonic transducers (Focussed Transmit Receive Longitudinal wave TRL probes), but also a combination of different transducer types and ultrasonic test application methods needs to be considered.

NDT Techniques for the inspection of Austenitic and dissimilar inspection are:

  • Liquid Penetrant
  • Focussed TRL Longitudinal Wave UT
  • Standard Shear wave UT
  • Phased Array UT
  • Using our experience in this field Integrity NDT can help to ensure safe operation of these critical plant components.

Austenitic Weld UT