HEAT EXCHANGER TUBE

These types of tubes are commonly found in heat exchangers used in oil refineries and for other large chemical processes, power generation and many other high liability, high down time cost applications. Many of these situations are also are high pressure applications.Heat Exchanger Tube non Destructive Tube

Heat exchanger tubes made of carbon steel, stainless steel, titanium alloys, copper and copper alloys and other metals require non-destructive testing (NDT) solutions that can meet ASTM E213, E570, E426 and EN 10893-10 inspection standards, as well as other standards.

  • In heat exchangers tubes are subjected to mechanical stresses due to thermal driven linear contraction and expansion of the tube length and due to radial thermal gradients in the tubes.
  • Heat exchanger tubes are also susceptible to any stress from the high pressures of the fluids themselves.
  • Trained and experienced MAC® technicians can help you to determine which test method should be used, based upon each method’s inherent capabilities and limitations, as well as your unique requirements.
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MULTIMAC®

Eddy Current Instrument for Testing Tube, Bar, & Wire

  • Operates with encircling, sector, or rotary test sensors.
  • Up to eight test channels, null or absolute, can be used in any combination.Non Destructive Testing Eddy Current
  • Detect short surface and some subsurface defects in tube, bar, and wire.
  • Inspect welded tube for short ID or OD defects in the weld zone.

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ECHOMAC® FD6

For Flaw Detection, Thickness & Dimensional Measurement
in Tube & BarEddy Current in Non Destructive Testing

  • Versatile Ultrasonic tester with superior performance and versatile, intuitive operation.
  • For full inspection of tubes, pipes and bars, plate and weld.
  • Operate on or off line
  • Upgrade and/or replace older ultrasonic testers
  • Use with rotary, spin-the-tube, squirter and bubbler installations.

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EDDY CURRENT TECHNOLOGY IN NDT

MAC’s® Eddy Current Testing (ECT) systems incorporate computer-based test instruments and test coils that use two ECT coil technologies: encircling and sector coils, and spinning or rotary probe coils.

  • Encircling and sector Eddy Current coil tests perform in this manner
  • The product is passed through or adjacent to an electrical test coil, which
    has been excited by an alternating current.
  • This induces a flow of eddy currents around the test material or in the
    case of a sector coil, in the area under the coil.
  • Short, intermittent anomalies or flaws cause a variation in the eddy
    current pattern, which the instrument detects.

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ULTRASONIC TECHNOLOGY IN NDT

High-speed Ultrasonic (UT) Systems enable a full volumetric examination of materials and are designed to detect surface, subsurface, internal and dimensional flaws.

This type of testing utilizes high-frequency sound waves that are transmitted throughout the material being tested in order to conduct a thorough inspection.Non Destructive Testing with Ultrasonic Technology

  • Ultrasonic inspection can be used to detect surface flaws, such as cracks, seams, and internal flaws such as voids or inclusions of foreign material. It’s also used to measure wall thickness in tubes and diameters of bars.
  • An ultrasonic wave is a mechanical vibration or pressure wave similar to audible sound, but with a much higher vibration frequency. For NDT purposes, the range is usually from 1MHz to 30MHz or higher.
  • Depending on the test requirements, these waves can be highly directional and focused on a small spot or thin line, or limited to a very short duration.
  • Two methods of UT are used for flaw detection – Shear and Compression Wave.

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