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Inspection Challenges

When tracking numerous complex indications at multiple locations in condensate Heat Exchangers (HX), challenges arise when the type and severity of the degradation is unknown due to the limited capabilities of certain bobbin probe technologies.

In this particular example, a customer was faced with several questions to answer about their component.

  • What is the degradation and root cause?
  • Have the historical bobbin results been adequate for future use of the HX?
  • Can we provide qualifying information in order to extend the life of the component?

Recommended Solution & Advantages:

Zetec offered a solution to qualify the historical bobbin indications in this component. Zetec recommended using a CXB4 probe coupled with the Velocity software and MIZ-200 Eddy Current instrument.

Velocity software combined with the CXB4 probe provided two separate (axial / circumferential) cscan/waterfalls. Each display optimized the analysis process by providing the user the ability to differentiate between axial and circumferentially oriented indications. This technology is unique in the industry and delivers a simplified approach to determining the orientation of indications.

The solution provided extensive advantages including:

  • Excellent detection of cracking regardless of orientation
  • Provides Array and Bobbin inspection in a single pass
  • Industry-leading signal to noise ratio
  • Remarkable C-scan presentations
  • High level of detection in a rapid inspection

Zetec Products:

ECI-MIZ200 Flat Perspective 350x185MIZ-200 Eddy Current Instrument
Inspection Confidence in Demanding Environments

  • Industry leading data Signal to Noise Ratio for superior Probability of Detection
  • Rugged, cast aluminum case designed to IP-65 spec for withstanding harsh environments
  • Compact & Lightweight
  • A/C & battery powered

CXB4 smallCXB4 Probe
Array and Bobbin technology combined

  • Ability to detect and differentiate between Axial, Circumferential and Volumetric indications
  • Fast inspection speeds with accurate, detailed results
  • Ridged design for improved probe life
  • Excellent detection of indications at expansion transitions and support structures

VeloSWVelocity Acquisition and Analysis Software
Acquisition, Analysis and Data Management

  • Auto Acquire
  • Industry leading enhanced C-scan presentations – derived from software
  • Tubesheet builder