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CETA-2

CETA 2 is one of the latest generation of storage tank wall crawlers supplied by Tecnitest Ingenieros S.L.

The system is suitable for scanning walls of large storage tanks, using Ultrasonic inspection to map the thickness profile of the tank wall from the outside.

The all new CETA 2 combines all the functionality of a flaw detector together a laptop for data collection and a control box to remotely control the crawler. The system can therefore meet the requirements of API 653.

The new design, like the old CETA 2, has the ability to move over riveted plates that can be encountered in various sites around the world.

Furthermore, the design is such that it can be manoeuvred around other obstacles easily using the controller.

Key Benefits for the Operator include:

  • Reliable automated inspection of storage tank walls for corrosion degradation
  • Software functionality gives thickness readings every 1 mm throughout the inspection
  • Software performs automatic data capture and positioning
  • All results are automatically stored in a data base for recording.
  • The system has the flexibility to use either a single element dry coupled transducer or a dry coupled array with up to 6 transducers.
  • Outstanding maneuverability at speeds of up to 200mm/s
  • Independent drives on each main wheel

Transducer Options:

CETA 2: Operates with a single crystal wheel probe transducer having a frequency of either 5MHz or 10MHz. The wheel probe is a virtually dry contact, there is a water bottle on the carriage to dampen the wheel, via a sponge, as it moves over the inspection area. As an option, a multiple element wheel that carries up to 6 x 5MHz or 10MHz transducers and is dampened in the same way as the single element wheel, can be supplied.

Software Options:

The data acquisition system allows high speed movement measuring thicknesses every 1 mm with accurate control of position and measurement accuracy better than 0.1 mm. All A-scans are stored for future analysis and a B Scan presentation is provided from the A scan data

Acquired data are recorded and properly presented on the system PC with automatic evaluation… specifically, the series of thickness values is shown in a two axis graphic format (distance to the reference position versus thickness or thickness loss) and referenced to the input nominal value of each plate and the 20%, 40% and 60% remaining thickness, allowing image scrolling, zoom.

Post scanning data processing is available with a full suite of post processing tools including adjustment and addition of gates. Post inspection report generation in Excel, Word or PDF.

The dedicated software of the system allows as well signal filtering and data processing to erase false or deviated measurements (user defines thresholds), calculation of average values within a user defined range and, according to API-653 Specification for the inspection of oil storage tanks, the calculation of actual minimum acceptable thickness and maximum allowable tank capacity.

 

Download CETA 2 Brochure