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Liquid Penetrant Testing- Part 1 (Equivalent to ASNT-Level-I Complete Course)

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Liquid Penetrant Testing- Part 1 (Equivalent to ASNT-Level-I Complete Course)

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Bharat Asalpara
Bharat Asalpara
Oil & Gas UpstreamAerospace
  • 7-day money-back guarantee
  • Session recordings included
  • Certificate of completion
Volume pricing for groups of 5+

Why enroll

Upon completion of the course, you will be able to:

1. Perform LPT examinations on non-porous material.

2. Familiar Principles, applications, limitation and advantages of LPT.

3. Familiar with different techniques and selection of technique of LPT.

4. Be familiar with the different types of material can be tested by LPT. Understand basic Metallurgy related to NDT and the material tested.

5. Be familiar with equipment, instrument and consumable required for performing LPT.

6. Use the different types of penetrant products available to the industry.

7. Understand and recognize the typical surface discontinuities, flaws, or irregularities can be detected by LPT.

Your instructor

Bharat Asalpara

Bharat Asalpara

5Courses
4Avg rating

Is this course for you?

You should take this if

  • You work in Oil & Gas Upstream or Aerospace
  • You're a Mechanical Engineering professional
  • You prefer live, instructor-led training with Q&A

You should skip if

  • You need a different specialisation outside Mechanical Engineering
  • You need fully self-paced, on-demand content

Course details

Liquid Penetrant Testing or Penetrant Testing (PT) is one of the oldest and most widely used non-destructive testing method. The origin of liquid penetrant testing is generally attributed to the inspection of wheel axles in the railroad industry in the 1890s. It is considered an effective NDT method and capable of detecting very small surface breaking discontinuities that cannot be found by direct visual examination in various non-porous materials. It is well suited to the detection of all types of surface cracks, forging laps, surface porosity, laminations, hot tears, cold shuts and similar discontinuities in various product forms. Penetrant testing can be performed on magnetic and non-magnetic materials, metal or non-metals, ceramics etc but does not work well on porous materials. It is extensively used for the inspection of wrought and cast products of both ferrous and nonferrous metals, powder metallurgy parts, ceramics, plastics and glass objects.

This course designed to meet the classroom training requirements in compliance with SNT-TC-1A or other appropriate certification programs and covers the body of knowledge outlined in CP-105 of ASNT. A certificate of participant will be issued upon satisfactory completion of all theory and practical demonstration training, quizzes and passing of all examinations, however this certificate cannot be considered as PT Level-I certified person without certification from the employer.

Course suitable for

Key topics covered

Topics covered -

1. Introduction

1.1. Brief History, Introduction to Liquid Penetrant Testing

1.2. Principles of LPT

1.3. Purpose of LPT

1.4. Types of Penetrant available commercially

1.5. Methods of Personnel Qualification.

2. Liquid Penetrant Processing steps.

2.1. Preparation of parts and temperature of part.

2.2. Adequate lighting.

2.3. Application of penetrant to parts, components or welds.

2.4. Penetrant Removal of surface penetrant.

2.5. Developer application and drying.

2.6. Inspection and evaluation.

2.7. Post cleaning.

3. Overview of Various Penetrant Testing Techniques.

3.1. Solvent Removable Non-Fluorescent(Visible) and Solvent Removable Fluorescent Techniques.

3.2. Water Washable Non-Fluorescent(Visible) and Fluorescent Techniques.

3.3. Characteristics of each technique.

3.4. General application, advantages and limitations of each technique.

4. Liquid Penetrant Testing Equipment.

4.1. Liquid penetrant testing units.

4.2. Lighting for liquid penetrant testing equipment and light meters.

4.3. Materials for liquid penetrant testing.

4.4. Penetrant test equipment (Portable), Penetrant, Cleaner/Removers, Developers and Cotton cloth requirements, White light and Black light (Ultraviolet Light) sources

5. Lux meter and UV meters.

6. Record the results in terms of written instruction given from NDE procedure.

7. Safe Handling of NDE equipment’s.

Opportunities that await you!

Career opportunities

Training details

This is a live course that has a scheduled start date.

COMPLETED

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Questions and Answers

A: Preserving flaw detectability means avoiding false negatives caused by penetrant washout and background smearing; restarting resets the controlled variables. Extending developer time doesn’t undo emulsifier-driven penetrant removal. Higher pressure rinsing worsens the same failure mode by stripping penetrant from shallow discontinuities. Jumping to inspection assumes dwell excess is benign, which contradicts the control philosophy of the standard.

A: Correct interpretation prevents mixing incompatible system families; water-washable penetrants are formulated to skip emulsification. Treating symbols as always generic ignores controlled process documentation. Optional emulsifier use is a misconception imported from post-emulsifiable systems. Lighting adequacy doesn’t resolve a chemistry mismatch upstream.

A: The safeguard’s purpose is to keep vapor concentration below ignition thresholds; losing it exposes a fire and flash hazard. Evaporation rate affects sensitivity, not acute hazard. UV intensity is unrelated to ventilation. Dermal exposure is a hygiene issue but not the dominant immediate risk.

A: Explaining the symptom requires a mechanism that traps penetrant everywhere, which surface contamination does. Excess UV doesn’t create fluorescence where none exists. Short developer dwell reduces indication strength rather than raising background. Developer type selection isn’t material-specific in that way.