Applications
• Inspection of Ferromagnetic and Non-Ferromagnetic Tubing
• Provides accurate wall thickness readings.
• Can detect and size isolated pitting, corrosion, and gradual wall loss.
• Can inspect tubes from 5/8 to 3” diameter. (Larger with special probe designs).
• Can distinguish between ID and OD Orientations.
• Can inspect tubing that has been coated with non-conductive coating.
• Complimentary Technique to ECT, RFT, NFT & MFL.
Disadvantages
• Cleanliness of the tubes is a major factor and requires thorough tube cleaning (removal of all scale, deposits, chemical residue and/or oil residue prior to inspection.
• Slow Inspection Speeds of 15-30 tubes / hour.
• Cannot detect cracks (Special probe design is needed).
• Cannot inspect Low Fin Tubing.
• Limited to isolated pit detection and pit size (=> 1/8” diameter).
• Outside of scale, a rough ID surface can reduce the effectiveness of the examination as well. Production
• Two-man crew can inspect roughly 200 tubes (20’ in length) in an 8 hour shift.
Site Preparation
• Tubes require exceptional cleaning (15,000-20,000 psi hydro-blasting is recommended).
• 110 VAC Power Source.
• Water source with sufficient water pressure 60 psi or greater.
• Scaffolding and/or cover for equipment.
Pre-Job Information
• Equipment Number
• Service Name
• Total Number of Tubes
• Percentage of Tubes for Inspection
• Tube Material
• Tube OD
• Tube Wall Thickness or Gauge
• Tube Length
• Access Requirements to Exchanger
• Special Safety Requirements
• Suspected or Predicted Damage
• Tube Side Service
• Shell Side Service
Applications
• Inspection of Ferromagnetic and Non-Ferromagnetic Tubing
• Provides accurate wall thickness readings.
• Can detect and size isolated pitting, corrosion, and gradual wall loss.
• Can inspect tubes from 5/8 to 3” diameter. (Larger with special probe designs).
• Can distinguish between ID and OD Orientations.
• Can inspect tubing that has been coated with non-conductive coating.
• Complimentary Technique to ECT, RFT, NFT & MFL.
Disadvantages
• Cleanliness of the tubes is a major factor and requires thorough tube cleaning (removal of all scale, deposits, chemical residue and/or oil residue prior to inspection.
• Slow Inspection Speeds of 15-30 tubes / hour.
• Cannot detect cracks (Special probe design is needed).
• Cannot inspect Low Fin Tubing.
• Limited to isolated pit detection and pit size (=> 1/8” diameter).
• Outside of scale, a rough ID surface can reduce the effectiveness of the examination as well. Production
• Two-man crew can inspect roughly 200 tubes (20’ in length) in an 8 hour shift.
Site Preparation
• Tubes require exceptional cleaning (15,000-20,000 psi hydro-blasting is recommended).
• 110 VAC Power Source.
• Water source with sufficient water pressure 60 psi or greater.
• Scaffolding and/or cover for equipment.
Pre-Job Information
• Equipment Number
• Service Name
• Total Number of Tubes
• Percentage of Tubes for Inspection
• Tube Material
• Tube OD
• Tube Wall Thickness or Gauge
• Tube Length
• Access Requirements to Exchanger
• Special Safety Requirements
• Suspected or Predicted Damage
• Tube Side Service
• Shell Side Service
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