NDT – Penetrant Testing



On completion of the training program, the student will be awarded:

→ A Certificate of NDT – Penetrant Testing, issued by Bureau Veritas Solutions Marine & Offshore.

The Certificate of NDT – Penetrant Testing, is obtained after completing the course and passing the online test.


This training course provides an overview of the Penetrant Testing (PT) method for non-destructive examination of materials and welding, its objectives and principles.

Whom the course is for

The course NDT – Penetrant Testing is aimed at anyone interested in getting familiar with this NDT technique. This may include Ship Managers, Technical Superintendents, Ship Masters, Officers and Seafarers; Offshore Units Operators and technical staff; Shipyards Technical Staff; Surveyors; P&I and/or Insurance Inspectors; etc.


On completion of the training, students will be able to:

  • Understand the basic physical principles of liquid penetrant testing.
  • Know the testing procedure and the inspection process referred to testing materials and equipment.
  • Differentiate applications and the acceptance criteria applied.
  • Get familiar with the purposes of reference materials and/or blocks to ensure the quality of test performance and testing results.

Course Contents

Basic principle, capillary effect

Physical properties of the penetrant

Testing procedure

  • Pre-cleaning
  • Penetrant application
  • Excess penetrant removal
  • Developer application
  • Inspection and recording
  • Post-cleaning

Testing materials and equipment

  • Penetrants
  • Removal methods
  • Developers
  • Equipment

Applications and acceptance criteria

  • Indications
  • Test report

Reliability, quality of test performance

  • Surface preparation and condition
  • Types of penetrant materials and equipment used
  • Penetrations and development time
  • Viewing conditions
  • The temperature of the test surface
  • The material tested and flaws expected
  • NDT personnel competence
  • Safety issues