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Boiler Tube Weld Inspections
A large number of welded tube joints are found in a typical boiler and therefore rapid and reliable detection of welding defects is essential. Radiography (RT) is often employed to perform these inspections, but this technique is limited by the need to evacuate workers from the area during exposure and the delay related to film development.
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Zetec has developed an automatic inspection solution based on phased array ultrasound technology that can be deployed in lieu of RT. The system can be used to detect and size fabrication and service-induced defects in boiler tube welds, from 1.5" to 3" NPS, and for wall thickness from 0.24" to 0.4". This high-speed system completes a weld inspection in less than 1 minute while providing full thickness coverage of the weld volume and heat affected zone.
Zetec's solution employs the following equipment:
OmniScan PA or Z-Scan PA
Zetec PAT (Phased Array Tube) Scanner
UltraVision 1.0 Software
1-D Linear Array Probes
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