Visual Testing (VT) is the most fundamental and widely utilized technique among non-destructive testing (NDT) methods. This method encompasses the evaluation of surface discontinuities, geometric compliance, and the overall quality level of a product or fabrication, performed either through direct visual observation or with the aid of optical instruments.
Visual testing serves as the primary inspection stage for welded fabrications, pressure vessels, pipelines, castings, forgings, structural components, and machinery parts. It directly influences the efficacy of subsequent NDT methods.
The objectives of this training program are to:
Provide participants with a technical foundation in the principles of visual testing.
Cultivate the competence to conduct inspections in accordance with international standards.
Develop the ability to accurately identify and characterize various types of discontinuities.
Standardize the processes of measurement, evaluation, and reporting.
Establish the theoretical and practical framework required for Level I, II, and III qualifications.
The training covers the following technical modules:
Definition and limitations of visual testing.
Direct vs. remote (indirect) visual inspection.
Inspection conditions (illuminance, distance, and viewing angle).
Human factors and visual perception.
TS EN ISO 17637: Visual testing of fusion-welded joints.
ISO 9712: Qualification and certification of NDT personnel.
ASME Section V: Nondestructive Examination (VT applications).
EN 13018: General principles of visual testing.
Endoscope and borescope systems.
Mirrors, magnifiers, and linear scales.
Weld gauges (precision measurement tools).
Digital imaging and recording systems.
Surface cracks and fissures.
Porosity and gas inclusions.
Undercuts and overlaps.
Incomplete penetration and lack of fusion.
Spatter and stray arcs.
Geometric non-conformities.
Acceptance/rejection criteria.
Threshold limits defined by standards.
Welding quality levels (B, C, D).
Tolerance analysis and measurement evaluation.
Preparation of formal inspection reports.
Photography and evidence management.
Traceability protocols.
Audit trail and record-keeping.
Basic principles of visual inspection.
Operation of fundamental equipment.
Execution of inspections according to specific instructions.
Recognition of discontinuities (without interpretation).
Competence: Operates under the supervision of Level II or III personnel; does not make final decisions.
Application of inspection procedures.
Evaluation and classification of discontinuities.
Final acceptance/rejection decision-making.
Comprehensive reporting and documentation.
Competence: Authorized to perform independent inspections and evaluate results.
Development of inspection procedures.
Interpretation of standards and technical specifications.
Preparation of training materials and examination criteria.
Technical oversight and systemic responsibility.
Competence: Acts as the technical authority and system architect.
Pressure vessel and boiler manufacturing.
Welded steel structures.
Pipelines and process facilities.
Oil & Gas industry.
Power generation plants.
Machinery and equipment manufacturing.
Level I: 16 – 24 Hours
Level II: 24 – 40 Hours
Level III: 40+ Hours (Advanced technical content) (Durations are subject to revision based on standards and specific client requirements).
Upon completion of the training, participants must pass:
A Theoretical Examination.
A Practical Application Examination.
Successful candidates are directed to the certification process conducted under the framework of ISO 9712.
Welding Engineers and Technicians.
Quality Control (QC) Personnel.
Inspection and Audit Specialists.
Production Supervisors.
Personnel from certification and surveillance bodies.
By the end of the program, participants will be able to:
Effectively apply visual testing techniques.
Perform evaluations in strict compliance with standards.
Accurately classify defects and flaws.
Prepare professional technical reports.
Assume active roles in auditing processes.
Training content aligned with international standards.
Industry-focused, practical approach.
Instruction based on extensive audit and certification experience.
Real-world field examples and case studies.
Infrastructure compatible with the INSPERLA quality system.