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RT Radiographic testing

Radiographic testing (RT, RT2.FI)

Radiographic testing, often referred to as X-ray testing, is an imaging test procedure that provides information about the intrinsic nature of a component. For example, pores or cracks can be detected. The nature of the discontinuity, i.e. whether a pore, a slag or a binding defect is present, can usually be determined by means of radiographic testing. This results in an advantage over the ultrasonic test, which judges the displays found according to their reflection properties.

Often radiographic tests are carried out by service providers, so that the client must evaluate the produced radiographic films on his own. Film evaluation courses (RT2.FI) enable the participant to evaluate corresponding films according to standards. The course duration of an evaluation course is considerably shorter than the regular RT2 course to seven days of instruction. The film evaluation course refers exclusively to the evaluation of welded joints.

In a level 1 course, participants will acquire the skills to produce radiographic films themselves. The handling of the X-ray tube and the radioactive preparation will be learned in this course.

The level 2 course in the field of radiography provides the participant with further knowledge of a standard-compliant evaluation of radiographic recordings. Furthermore, the preparation of test instructions is dealt with.

The level 1 and level 2 courses include the industrial sectors "Castings (c)", "Forgings (f)", "Welded Products (w)", "Tubes and Pipes (t)" and "Rolled Products (wp)".

In addition to the "classical" radiographic examination by means of films, the digital technology is increasingly gaining acceptance by means of X-ray image intensifiers. The work with this kind of radioscopy equipment is learned in the courses DR1 and DR2.

Qualification levels

ISO 9712 differentiates between three qualification levels with different areas of responsibility. After authorization by the employer, level 1 personnel may perform the test procedure and record the test results. The course of level 1 deals with the standard-compliant implementation of the radiographic examination.

After certification in the field of film analysis (RT2.FI), the candidate may be authorized by his employer to independently evaluate radiographic films of welded joints.

If there is a need to create test instructions and evaluate films from different product sectors (castings, welds), this will be taught in the RT2 course.

Level 3 personnel can carry out level 2 activities and select the test method to be used. Another task for level 3 personnel is to create process descriptions that level 2 staff can work on. The level 3 staff may take full responsibility for a test facility.

Course contents

The level 1 course teaches the physical fundamentals of the test procedure. The factors influencing the quality of radiographic recording are learned. Working with the X-ray tube and gamma-ray device is an integral part of the lessons and is practiced in practical phases. The standardized logging and the correct film processing are further important components of the lesson. The work according to given test instructions will be explained.

In stage 2, the physical fundamentals of the test procedure are deepened and the standard-compliant evaluation of transmission films of welded joints and castings is learned. Furthermore, test instructions are developed on the basis of current regulations.

Candidates who wish to concentrate on the evaluation of radiographic films of welded joints can learn this in the evaluation courses. Here, the relevant physical basics are taught, so that the participant understands the requirements of the regulations and can check them.

Level 3 candidates are taught the basics of physics in greater depth. The implementation of the test procedure for special products is developed in the form of process descriptions. The requirements of the regulations are incorporated here. The course is designed in a multi-sectoral way, so that the different conditions in the radiographic testing of castings and welded joints are clarified.

The participants of courses DR1 or DR2 will be informed about the physical conditions of radioscopy equipment. The underlying rules are explained. Practical work with the radioscopy system is practiced. Furthermore, the participant learns how to use software to evaluate the test results.



As an entry requirement for the course a degree in a metalworking profession is recommended.

Prerequisite for the exam is the confirmation of the required eyesight:

  • Close visison capability must be sufficient to read the Jaeger Number 1 letters or Times New Roman 4.5 or equivalent marks at a distance of not less than 30 cm with at least one eye, with or without visual aid
  • Color vision must be sufficient to detect and distinguish contrasts between colors or shades of gray in the relevant NDT procedures, as determined by the employer

Furthermore, an industrial experience period has to be confirmed by the employer before the exam and for the desired certification. This depends on the intended completion and the professional career of the participant. In the event that the time required for the exam is not available, we offer industrial internships.


The qualification exam is carried out by the personnel certification body of TÜV NORD. Usually the participant submits a certification application following his exam so that he receives a corresponding certificate. The certificates of TÜV NORD are DAKKS accredited and cover the product sector welded joints when an RT2.FI course is taken. If an RT1 or RT2 course is taken, the product sectors "Castings (c)" and "Welded Products (w)" are covered. The courses and their examinations meet the requirements of the PED.

Renewal and recertification

After a period of validity of the certificate of 5 years, a renewal must be requested from the personnel certification body of TÜV NORD. In this case, it must be confirmed by the employer that there was a continued activity of the candidate. The renewal is not connected with an exam.
The recertification in level 1 or 2, which is due after a further 5 years, is linked to a practical exam, the recertification exam. In the recertification exam, selected test pieces are to be practically tested, the test results recorded and in stage 2 a test instruction is to be created. Usually, the candidate will pre-enroll in a recertification course in order to become familiar with the possibly revised regulations and the preparation of the test instructions.

Company courses

For groups of five or more participants, we are also happy to offer you our training courses in your company. In such in-house trainings, we can target your products and special requirements. We take care of test pieces and test equipment. Please organize a room for the theoretical lessons and maybe a separate room for the practical exercises.

We are happy to prepare an offer for your tailored further training.

Contact person

SLV München