Testing of pressure vessels

NDT methods generally used for ispection of pressure vessels.

Detection of surface defects

  • Visual testing (VT)
  • Eddy current testing (ET)
  • Magnetic particle testing (MT)

Detection of internal defects

  • Ultrasonic testing (UT)
  • Radiographic testing (RT)

Specifications

minimum maximum units
Outside Diameter *) 120 406 mm
Length *) 400 1700 mm
Wall Thickness (cylindrical part) *) 3.0 12 mm
Overlap 10 %

*) These parameters are subject of agreement with a customer.

Parameters of ultrasonic testing equipment

  • Multi-channel ultrasonic system
  • Testing frequency range 2 to 15 MHz
  • Testing sensitivity from 1 mm FBH
  • Automatic visual/acoustic signalization of test results for line control ??” sorting device
  • 5 transducers combined in each one testing head
  • Simultaneous operation with 2 to 5 testing heads in one equipment

Gallery

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Configuration of ultrasonic transducers in testing head

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Testing line assembly

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First equipment for off-line UT of small pressure vessels

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Reference piece pressure vessel with defined artificial defects

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Pressure vessel ultrasonic testing in progress

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Testing line in Poland (MILMET)

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Testing line in Poland (MILMET)

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A-Scan – longitudinal notch in reference piece

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A-Scan – thickness measurement

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Database of ultrasonic testing

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Examples of settings

Advantages of automated ultrasonic testing equipment for pressure vessels

  • Ultrasonic testing system is equipped with modern computer technique, enabling fully automatic operation without presence of operator;
  • Automatic manipulation with pressure vessels;
  • Short time for testing of one pressure vessel;
  • Simple control and adjustment of the system via user friendly software;
  • Possibility of remote system diagnostics;
  • Immediate information/signalization about rejected and good vessels;
  • Immediate documenting and archiving of test results, including data transfer to company’s central information system;
  • Generating test reports for separate vessels and/or for whole order;
  • Statistic data processing based on chosen criteria;
  • Parameters and functions of test are saved on HD.