Tank Floor Testing
The storage of dangerous goods in tanks must be executed in a safe way. In order to reduce economical as well as environmental risks, a thorough knowledge of tank condition, in particular tank bottom and shells, is of utmost importance.
STANLEY Inspection can provide your installation with added quality, cost reduction, business security, and improved safety for both existing and new installations. Nondestructive testing provides clear insight into the risk of leakage or other safety-critical defects, increasing integrity and safety within the installation and helping avoid undue operating expenses.
Nondestructive testing of storage tanks includes several methods of examining materials, components, and connections in order to identify and quantify material defects and degradations.
Tank Bottom Inspection
For the inspection of tank bottoms STANLEY Inspection offers quick, reliable results by combining two techniques: Magnetic Flux Leakage (MFL) testing and Ultrasonic Testing (UT). Corrosion is detected effectively (MFL) and reliably quantified (UT).
An inspection technique that detects volumetric changes, MFL testing is facilitated by tank floor mapping utilizing today's latest computerized equipment. With MFL, a strong magnet induces a magnetic field in the material. On a corrosion spot, a leakage field will arise. The larger the corrosion, the larger the leakage field.
After the fairly quick MFL inspection is complete, the suspect areas of the tank floor surface will be quantified by slower but more accurate Ultrasonic Testing (UT).
AUT Girth Weld Inspection
STANLEY Inspection utilizes the PipeWIZARD® Phased Array (PA) system—combined with a global team of certified operators—to provide our customers with today's most comprehensive Automated Ultrasonic Testing (AUT) girth weld inspection services. This world-class system enables advanced inspection techniques and real-time reporting, so the same equipment can be used for high-production and specialized weld inspections. Elevated production rates are possible with no sacrifice in quality.
PipeWIZARD is ASTM E-1961, API 1104, and DNV-OS-F101 capable. All STANLEY Inspection PipeWIZARD operators are UT-certified Level II or higher and can be rapidly deployed to both onshore and offshore locations.
Time of Flight Diffraction (ToFD)
Time of Flight Diffraction (ToFD) is ideal for weld procedure development. ToFD setup is very fast and can be done without building a calibration standard when a quick clean/dirty weld determination is needed. ToFD is very helpful when multiple weld bevels need to be evaluated or other parameters are changing during procedure development. STANLEY Inspection also uses ToFD as an excellent supplement to full-coverage pulse-echo weld inspection.
Phased Array (PA)
Phased Array (PA) testing (sectorial and linear) produces detailed visuals similar to medical ultrasound images. STANLEY Inspection utilizes the PipeWIZARD® Phased Array system to provide onshore and offshore customers with today's most comprehensive girth weld inspection and real-time reporting.
- One PipeWIZARD can scan pipes ranging in diameter from 4" to 56" while only changing the band, setup file, and wedge
- Standard PipeWIZARD can scan pipe walls from 0.25" to 2" (6mm to 50mm)
- Increased number of zones for better detection and vertical sizing
- Any weld profile, pipe diameter, or wall thickness can be accommodated by recalling the appropriate setup files
Automated ultrasonic testing of pipeline girth welds using the PipeWIZARD system meets or exceeds ASTM E-1961, DNV2000 OS-F101, and API 1104 codes:
- Fast scanning speed: 100mm per second
- Weld-to-weld inspection time of less than four minutes for 36" pipe
- Very flexible for different pipe diameters, wall thicknesses, and weld profiles
- High reliability
PA testing uses electronic beam forming to generate and receive ultrasound, with each element in the array individually pulsed and delayed to create a wide range of beam angles and focal distances. PA inspection allows customized weld inspections, advanced imaging, and highly detailed inspections.
Complete Weld Inspection
Pulse-echo ultrasonic inspection techniques using Phased Array (PA) probes coupled with Time of Flight Diffraction (ToFD) inspection provides very accurate weld flaw measurements. Welds are typically divided into zones (zonal discrimination) that are evaluated individually, with the results being reassembled into a comprehensive weld analysis. STANLEY Inspection takes this a step further and adds linear and sectorial scanning to provide superior weld examination.