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Eddy Current Testing - Level  II

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Course Duration:     5 Days (40 Hours)                                                                                                   Course Fees:     $1075
Objective:
Eddy Current Testing - Level II, Classroom NDT training course is developed to meet the requirements of ASNT SNT-TC-1A, CP -189, NAS 410 and other equivalent standards and customer specific written practice for training and certification in this method of Non-Destructive Testing personnel.
After completion of eddy current testing level II course, you will get in-depth knowledge of Eddy Current principles, equipment and application of eddy current techniques to test various product forms for paint layer thickness, corrosion detection, and surface crack detection etc.
Training Examination & Certification Requirement:
During this Eddy Current Testing training classes, you will give examination in General theory, Specification, and Practical. You are required to successfully pass these three examinations with minimum of 70% grading in each examination and average grading of all three examinations should be 80% minimum as per the requirement of ASNT SNT-TC-1A 2011 or NAS 410.
OJT Hours: As per requirements of ASNT SNT-TC-1A, you need to have a minimum of 630 Hours on-job training (OJT) after completion of training classes for certification in this method.
Pre-Requisite: Person attending direct Level II, need to have 40 Hours of Level I classroom hours in this method.  
Basic Principle of Eddy Current Testing:
This method uses electrical current known as eddy current which is generated in a conductive material by an induced alternating magnetic field. Eddy current flow in circles at and just below the surface of the material. Interruptions in the flow of eddy current, caused by imperfections, dimensional changes, or changes in the materials conductive and permeability properties, can be detected with the proper equipment.
Course Description:

  • Review of Electromagnetic Theory
  • Type of eddy current sensing probe
  • Factor affecting Coil Impedance
  • Coupling
  • Signal -to- Noise Ratio
  • Selection of Test Frequency
  • Field Strength and its selection
  • Instrument design consideration
  • Electromagnetic Testing Applications
  • Flux Leakage Field
  • Remote field Tube Inspection
  • Alternating Current Field Measurement
  • Calibration Standard and Procedures

Hands on Training (Practical) Outlines:

  • Introduction to instrument
  • Conductivity  Measurement
  • Paint Layer Thickness Measurement
  • Surface Flaw Detection
  • Second Layer Crack Detection
  • Corrosion Detection with Dual Frequency
  • Crack detection in Aircraft Standard
  • Flaw detection with Encircling Probe
  • Flaw detection with Internal or Bobbin Probe

Training Material: 
Training material is supplied at the start of training and divided into different sections followed by practice worksheets and quizzes. Training books also include some referencing code & specifications for examination procedure and for acceptance.
Referencing Code and Standards:

  • ASME Section V Article 8 – Appendix II – Heat Exchanger
  • ASME Section V Article 23- Electromagnetic (Eddy-Current) Examination