General

Before starting the test, the surface must be cleaned: grease, dirt and welding spatter should be removed.

Visual testing can be done at various distances relative to the object. If we look at the object from a greater distance, we speak of a general impression (review) and this gives a different result from a detailed study at a distance of less than 60 cm. In addition, there is the possibility to perform internal testing with a borescope.

For the visual assessment of constructions, components, parts and welding connections, various tools can be used, such as measuring tools, magnifiers, weld gauge and/or additional lighting.

If the operator has detailed knowledge of the object, knows the manufacturing process and/or is familiar with the conditions of use, this will have a positive effect on the visual test.

Scope/Products/Sectors

Surface testing of objects made of all possible materials.

When visually testing objects, we mainly search for the following deviations:

• General corrosion and well corrosion (pitting)
• Welding defects and/or weld geometry
• Geometry and/or dimensions of object

Testing has a large application area, but is often applied to the following products:

• Semi-finished products, such as staff and plate material, profiles and tubes;
• Casting or forgings, such as pump housings, gears and bolts;
• Lifting equipment;
• Piping, fittings and/or welding in the petrochemical and/or food industry;
• Welding in construction and shipbuilding;
• Highly strained aircraft components, such as turbine blades, by means of borescope research;

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Level 1 only on request

Training Information Level 2

For whom

The training is set up and intended for (oncoming) NDT inspectors/operators for whom a qualification and/or certification is required. In addition, the training gives a detailed insight into the research, this is supporting information for each work planner, QC/QA & quality manager.

The following components are recommended for course participants:

• A VMBO/MBO-3 prior education or similar.
• Interested in engineering.
• Technical English, to be able to read standards, specifications & procedures.

Structure

The training includes both a theoretical and a practical part. The training time will be divided 50/50 between the theoretical and practical part. During the training, under the supervision of experienced NDT specialists, the student will lay a foundation for future work.

The objectives

• Familiarity with the basic principles and technical background of visual testing.
• Be able to do visual testing using simple tools (direct/DVI) and more advanced tools such as the borescope (Indirect/RVI).
• In addition, the interpretation and reporting of test results will be central.
• Be able to draft a thorough work instruction in order to direct a level 1 operator.
• Reading and interpreting procedures and/or specifications (mainly in English).
• Assess whether the identified indications meet the acceptance criteria.
• Drafting of test reports.

Content of the training

Basic knowledge of the NDO methods | Material defects (Defectology) and associated manufacturing techniques | The certification process/system | Physical principle of light | Functioning of the human eye | Perception and interpretation | Factors affecting visual testing | Equipment and Tools | Interpretation of obtained test results | Process and quality controls | Safety, environment and health

Practical information

Training duration ISO 9712:
Full Training (VT2): 7 days including exam, certification process via Hobéon SKNDO.
Visual testing of welds (VT2-W): 7 days including exam, certification process via Hobéon SKNDO.

Training duration SNT-TC-1A:
7 days including exam, exam report only. Final certification will have to be done by the company through its own Written Practice.

Exams:
The training meets and can be completed with an exam(-s) in accordance with the requirements of ISO 9712 or according to the requirements of the Written Practice of the own company (SNT-TC-1A). The exam consists of a theoretical (general and specific) part and a practical part. Both the training and the exam(-s) are tailored to the relevant industrial sectors (e.g.: Testing before and during use (including manufacturing), aviation or railway maintenance.)

Costs (Excluding VAT):

In order to be able to provide you as well as possible, we believe that a suitable quotation is desirable. Below is an overview of the different options:

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Training Information Level 3

For whom

The course is set up and intended for (the oncoming) NDT specialist for whom a qualification and/or certification is required. The course also provides an insight into the working methods of the testing.

The following components are recommended for course participants:

• An MBO-4/HBO prior education or similar.
• Knowledge of mathematics and physics.
• Interested in engineering.
• Technical English, to be able to interpret standards.
• Preferably already having completed the BASIC module with a positive result or be in possession of a level 3 certificate in another method.

Structure

The training includes both a theoretical and a practical part (writing a technical procedure). The training time will be divided 80/20 between the theoretical and practical part. During the training, under the supervision of experienced NDT specialists, the student will lay a foundation for future work.

The objectives

• Familiarize the student with in-depth knowledge of light, optics and technical background of visual testing.
• Distinction and possibilities of the various test techniques, from observing an installation (direct/DVI) to more advanced research with borescopes (Indirect/RVI).
• Special/new applications within visual testing.
• Reading and interpreting certification related standards and/or procedures (mainly in English).
• Be able to draft a thorough procedure in order to direct a level 2 operator.

Content of the training

Physical Principle of light | Functioning of the human eye | Perception and interpretation | Factors affecting visual testing | Optical components (mirrors, lenses, prisms, etc.) | Equipment and tools | Application possibilities & Latest techniques | Interpretation of codes, standards and/or specifications | Process and quality controls | Safety, environment and health

Practical information

Training duration ISO 9712:
6 days including exam, certification process via Hobéon SKNDO.

Exams:
The training meets, and can be completed with an exam(-s) compliant with the requirements of ISO 9712. The theoretical exam consists of 3 parts:

• Part D: Principles, general knowledge level 3 of the method
• Part E: Techniques & Specifications
• Part F: Procedure Writing

Both the training and the exam(-s) are tailored to the relevant industrial sectors (e.g.: Testing before and during use (including manufacturing), aviation or railway maintenance.)

Costs (Excluding VAT):

In order to be able to provide you as well as possible, we believe that a suitable quotation is desirable. Below is an overview of the different options:

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