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 Liquid Penetrant Testing - Level  I & II


Course Duration:     2 Days (16 Hours)                                                                                                     Course Fees:     $695
Liquid Penetrant Testing – Level I & 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 personnel.
After completing this liquid penetrant testing class, you will get in-depth knowledge of the Physics of Liquid Penetrant Testing, materials, and applications of Liquid Penetrant Testing methods to test various ferrous and nonferrous product forms for discontinuities open to the surface.

Training Examination & Certification Requirement:
During this Liquid Penetrant Testing training class, you will give an examination in General theory, Specification, and Practical. You are required to successfully pass these three examinations with a minimum of 70% grading in each examination and the 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 the requirements of ASNT SNT-TC-1A, you need to have a minimum of 210 Hours of on-job training (OJT) after completion of training classes for certification in this method.
Basic Theory of Liquid Penetrant Testing
Test objects are coated with visible or fluorescent dye solution. Excess dye is removed from the surface, and a developer is applied. The developer acts as a blotter, drawing trapped penetrants out of imperfections open to the surface. With visible dyes, vivid color contrasts between the penetrant and developer make "bleed out" easy to see. With fluorescent dyes, ultraviolet light causes the bleed-out to fluoresce brightly, thus allowing imperfections to be readily seen.
Course Description:

  • History of Liquid Penetrant Testing 
  • Physics of Liquid Penetrant Testing  
  • Classification of Penetrant System  
  • Pre-cleaning & Post Cleaning
  • Liquid Penetrant Processing  
  • Liquid Penetrant Methods  
  • Liquid Penetrant Testing Equipment
  • Interpretation and Evaluation
  • Classification of discontinuities
  • Codes and Standards

Hands-on Training (Practical) Outlines:

  • Pre-Cleaning & Post Cleaning
  • Visible Water washable method  
  • Visible solvent removable method
  • Fluorescent Water Washable method  
  • Fluorescent Lipophilic Post Emulsifier Method  
  • Fluorescent Hydrophilic Post Emulsifier Method
  • Welding & Thread Inspection
  • Discontinuity Interpretation & Evaluation

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

  • ASTM E 1209 – Fluorescent Water Washable Examination
  • ASTM E 1417- Standard Practice for Liquid Penetrant Examination
  • ASTM E 165- Standard Test Method for Liquid Penetrant Examination
  • ASME Sec VIII Division 2 – Appendix 8 for Acceptance of Liquid Penetrant Examination