In addition to our standard NDT inspection services, Stork Cooperheat's advanced inspection techniques facilitate accurate and reliable risk assessment.

Ultrasonic Imaging

Material loss in operating plant takes many forms and has many causes. The common thread is the cost to industry as well as the environmental threat posed by failures due to corrosion and other forms of in-service material degradation.

Ultrasonic imaging techniques can provide the information needed for plant integrity assessment. The single most important benefit of ultrasonic imaging techniques is the improvements they offer in controlling coverage and ensuring high quality usable data and the advantage of gathering detailed information of plant integrity prior to planned outages. Over and above this is the fact that these methods can be applied non-intrusively.

The equipment and services are available internationally from Stork Cooperheat and have been successfully applied onsite for many years. They can range from very simple scanning frames to fully programmable automated scanners, and include sophisticated processor controlled colour graphic display formats with data storage, manipulation and display capabilities. Stork Cooperheat have, based on many years experience onsite, selected the latest generation ultrasonic inspection systems. Stork Cooperheat have the capability to perform non-intrusive ultrasonic imaging of a wide variety of material degradation at temperatures up to 280° C.

Stork Cooperheat have extensive specific experience in the detection, recording, sizing, reporting and monitoring of the following degradation mechanisms:

• Hydrogen Damage – Low Temperature Hydrogen Attack as well as High Temperature Hydrogen Attack.
• Stress Corrosion Cracking.
• Fatigue Cracking.
• Corrosion.
• Erosion

Techniques used include:

• Time of Flight Diffraction.
• Colour Graphic Imaging.
• Corrosion Mapping.
• Phased Array.
• Multi Channel Pulse Echo.

Storage Tank Testing

Stork Cooperheat have a complete tank inspection capability including:

• Magnetic flux leakage.
• Ultrasonic plate scanning.
• Acoustic emission.
• Automatic wall thickness checking.
• Rope access wall thickness checking.
• API 653 certification.

Stork Cooperheat use the latest generation Magnetic Flux Leakage tank floor and hand scan systems for the detection of under floor corrosion on tank floors and annular plates.

Mechanised - UT (Ultrasonic Testing) Inspection of Welds during Manufacture

Mechanised Ultrasonic Testing using a combination of ToFD, Multi channel Pulse Echo and Phased Array techniques can be employed during New Manufacture, in accordance with the following codes and code cases:

• ASME Code case 2235-9 mechanised UT of welds on vessels and spheres ½ inch and above.
• API 650 appendix U mechanised UT of storage tanks equal to or greater than 10mm.
• ASME B31.3 Code Case 181 mechanised UT of welds in plant piping.
• API 1104 mechanised UT.
• Inspection of girth weld seams of pipelines to DNV OS – F101.

These applications can be used on Pressure Vessels, Spheres, Storage Tanks, In-plant Piping and Pipelines with the following benefits:

• Detection is not dependent on defect orientation.
• Detection of planar defects and cracks not perpendicular to the test surface.
• Accurate measurement of defect height.
• Higher probability of detection (POD).
• No evacuation of an area for radiation hazards.
• Inspection results and hard copy print outs available immediately.
• Accurate Critical Defect Analysis can be applied.
• Lower inspection costs.
• Equipment easily transportable.
• Finger printing of critical welds at the manufacturing stage.

Time of Flight Diffraction

ToFD is the most versatile and certainly the most extensively proven of all NDT techniques. The real virtue of ToFD is its ability to efficiently and reliably detect the presence of both fabrication and service induced defects whilst simultaneously providing the data necessary for accurate assessment of their size.

Tube Testing

Stork Cooperheat offer an exhaustive tube inspection capability including the latest generation inspection equipment supported by Fitness for Service and Remnant Life studies. The techniques offered are Eddy Current Testing, Remote Field Eddy Current Testing, Magnetic Flux Leakage, Internal Rotary Inspection System and remote Visual Inspection using video probes.

Cooperheat, Onsite Heat Treatment, NDT, Advanced Inspection Services.