Training


Training

Standard:

ISO 9712

EN 4179

NAS 410

SNT-TC-1A

 

Non-Destructive Testing

A process of inspecting, testing or evaluating materials, components or assemblies for discontinuities or differences in characteristics without destroying the serviceability of the part or system.

Non-destructive testing are commonly used in manufacturing, fabrication and in-service inspections  to ensure product integrity and reliability, to control manufacturing processes, lower production costs and to maintain a uniform quality level.

Non-Destructive Testing Methods

 

Magnetic Particle Inspection – this method are used for testing materials that are easily magnetized. It can detect discontinuities that are open to surface and just below the surface. The test specimen will be magnetized by using permanent or an electromagnet or by passing electric current through or around the specimen. By applying ferromagnetic particles to the already magnetized test specimen, an indication will occur in the area where flux leakage is present.

Training:

 

          Level 1

General Theory:

Physical Principles and Fundamentals of Magnetic Particle Inspection

Safety Precautions

Methods and Techniques of Magnetism

Equipment and Accessories

Inspection and Detection of Indications

Test Procedures

Detectability of Defects

Standard and Specifications

Specific Theory:

Application of the method and use of codes, specifications and procedures, applicable to the company, including the relevant control checks.

Written and Practical Examination

Level 2 (Direct)

General Theory:

Physical Principles and Fundamentals of Magnetic Particle Inspection

Safety Precautions

Methods and Techniques of Magnetism

Equipment and Accessories

Inspection and Detection of Indications

Checks and calibrations

Test Procedures

Detectability of Defects

Standard and Specifications

Testing procedures

Product technology

Interpretation and reporting

Post test procedures

Specific Theory:

Application of the method to the specific requirements of the company, in particular making reference to those codes, specifications and procedures used by the company, including the relevant control checks.

Written and Practical Examination

Liquid Penetrant Inspection – a method which can be used to non-porous material for the detection of open-to-surface discontinuities. It is widely used for testing non-magnetic materials. Penetrant will enters discontinuities by means of capillary actions. Apply liquid penetrant to the surface of the part (to be inspected) in a predetermined period of time and after which excess penetrant will be removed. The part then will be dried and a developer is applied. All the penetrant that is remained in the discontinuity will be absorbed by the developer to indicate the location, size and nature of discontinuity.

Penetrant used are either visible or fluorescent dye penetrant. Visible dye penetrant are inspected under white light while the fluorescent dye penetrant uses ultra violet (or black) light under darkened conditioned.

Training:

          Level 1

General Theory:

Basic principle of Liquid penetrant inspection

Safety precautions

Equipment

Preparation for testing

Testing techniques

Post test procedures

Processing

Specific Theory:

Application of the Method and use of Codes, Specifications and Procedures, applicable to the Company, including the relevant control checks.

Written and Practical Examination

 

Level 2 (Direct)

General Theory:

Basic principle of Liquid penetrant inspection

Safety precautions

Equipment

Preparation for testing

Testing techniques

Post test procedures

Processing

Testing procedures and selection

Product technology

Inspection and evaluation

Interpretation and reporting

Specific Theory:

Application of the Method to the Specific requirements of the Company, in particular making reference to those Codes, Specifications and Procedures used by the Company, including the relevant control checks.

Written and Practical Examination

                                   

Eddy Current Testing - this method is widely used for detecting surface flaws, to sort materials, to measure thin walls from one surface only, to measure thin coatings and in some applications to measure case depth. It is only applicable to electrically conductive materials. An alternating current is passed through a coil in order to create an alternating magnetic field which is used to induce a localized current (eddy current) into the material under test. Discontinuities will disrupt the flow of eddy currents and alter the terminal impedance of the test coil. The signal received will then be interpreted to locate the discontinuities.

Training:

          Level 1

General Theory:

Overview of Eddy Current Testing

Basic principles of testing

Generation of eddy currents by means of an AC field

Effect of fields created by eddy currents

Effect of change of impedance on instrumentation

Terminology and units

Electromagnetism theory

Flux leakage theory and principle

Readout mechanism

Types of eddy current sensing elements

Types of flux leakage sensing elements

Safety as applicable to eddy current testing and electrical safety

Specific Theory:

Application of the Method and use of Codes, Specifications and Procedures, applicable to the Company, including the relevant control checks.

Written and Practical Examination

Level 2 (Direct)

General Theory:

Review of electromagnetic theory

Factors that affect coil impedance

Factors that affect flux leakage fields

Signal-to-noise ratio

Selection of test frequency

Selection of method of magnetization for flux

Leakage testing

Coupling

Field strength and its selection

Field orientation for flux leakage testing

Instrument design consideration

Safety as applicable to eddy current testing and electrical safety

Specific Theory:

Application of the method to the specific requirements of the company, in particular making reference to those codes, specifications and procedures used by the company, including the relevant control checks.

Written and Practical Examination

Ultrasonic Testing – a method that uses high frequency sound waves that are emitted from a transducer into the specimen being inspected. The sound waves will be transmitted into the specimen, and reflect at interfaces. The reflected waves are transmitted back through the probe and connecting leads to a CRT monitor. The thickness of the specimen, and the depth and type of flaw can be determined using this method. Ultrasonic testing can be applied to most materials if sound transmission is good.

Training:

          Level 1

General Theory:

Basic Principles of Ultrasonic Testing

Equipment

Testing techniques

Calibration of testing systems

Specific Theory:

Detectability of defects

Factors affecting the performance of the Ultrasonic Testing

Codes of practice and standards

Conducting and recording the test

Written and Practical Examination

 

Level 2 (Direct)

General Theory:

Basic Principles of Ultrasonic Testing

Equipment

Testing techniques

Calibration of testing systems

Specific Theory:

Detectability of defects

Factors affecting the performance of the Ultrasonic testing

Codes of practice and standards

Conducting and recording the test

Interpretation of test results

Product technology theory

Written and Practical Examination

 

 

Radiographic Testing – a method used for detecting internal flaws in many different materials and configuration. An appropriate radiographic film is placed behind the test specimen and then is exposed to either X-rays or Gamma rays. The intensity of X-rays or Gamma rays is being modified according the internal structure of the specimen being inspected. After exposure of the film, it will then be processed in a dark room and an image will be formed, known as radiograph, of the test specimen.

Training:

          Level 1

General Theory:

Basic Principles of Radiographic Testing

Image formation

Films and processing

Fundamental aspects of radiographic quality

Radiation safety

Radiation protection

Exposure factors

Techniques

Radiographic quality assessment

Specific Theory:

Application of the Method and use of Codes, Specifications and Procedures applicable.

Written and Practical Examination

 

Level 2 (Direct)

General Theory:

Basic Principles of Radiographic Testing

Image formation

Films and processing

Fundamental aspects of radiographic quality

Radiation safety

Radiation protection

Exposure factors

Techniques

Radiographic quality assessment

Principles of radiation

Nature and properties of ionizing radiation

Sources of radiation for radiography

Principles of radiographic image formation

Radiographic sensitivity

Relative merits of x and gamma rays

Radiographic interpretation

Specific Theory:

Application of the method to the specific requirements of the company, in particular making reference to those codes, specifications and procedures used by the company, including the relevant control checks.

Written and Practical Examination