TechCorr Eddy Current Testing

Above is a sample tube sheet diagram from a final report. The inspected tubes are color-coded with a percentage of wall loss.

For Non-Ferromagnetic Tubes

Eddy current testing (ECT) is the most common tubular inspection technique. It is used for tubes made of non-ferromagnetic metals, such as copper, brass, and copper-nickel alloys.

ECT is used only with conductive tubing material, although the tubes may have a non-conductive coating.

The Best Crews in the Business

The TechCorr difference is our highly trained crews. They work efficiently and report quickly.

They are unique in the industry in that they consist of:

  • a two-person team to perform the inspection
  • an additional technician to analyze results on-site.

The result is we can typically provide:

  • an initial report on the day of inspection
  • a final report that is delivered in days, not weeks.

Our crews are trained in a variety of tubular testing techniques so they can perform complementary inspections, providing the most comprehensive service possible. Other techniques include:

Thorough Reports, Fully Explained

Reports are only useful when the customer understands them fully.

TechCorr ensures our customers understand our reports by:

  • explaining initial reports on the day of inspection
  • providing a timeline for final report delivery
  • conducting an exit interview to answer all questions.

TechCorr’s goal is to provide excellent service and exceed the industry standard.

Quick Guide

ECT is used with non-ferromagnetic metal such as copper, brass, and copper-nickel alloys.

isolated pitting, fretting, cracking, gradual wall loss, errosion, corrosion, through-wall holes

Inner Diameter/Outer Diameter Recognition
ECT can distinguish between ID and OD.

Outer Diameter Range
.25” – 2.5”

Wall Thickness Range
.150” – .020”

Production Rate of Three Person Crew

  • Up to 500 20’ tubes / 8 hour shift
  • Up to 1000 20’ tubes / 12 hour shift

Site Preperation Information

  • clean tubes so they are free of scale, debris, and most importantly magnetic deposits (10,000-20,000 psi hydro-blasting is recommended)
  • provide 110 VAC power source
  • provide 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 outer diameter
  • tube wall thickness or gauge
  • tube length
  • access requirements to exchanger
  • special safety requirements
  • suspected or predicted damage
  • tube side service
  • shell side service