Following the requirements of SIST EN ISO/IEC 17024, the certification of “non-destructive testing” personnel is delivered in accordance with the SIST EN ISO 9712 standard. The certification cover all methods, listed in the NDT methods and products ranging from castings, forgings, welded joints, pipes, to formed products. Within industrial branches we encompass manufacturing, and testing prior to, and during operations.
The new training center facilities are located in the JOB center, CKŽ 135c in Krško. There are two lecture rooms that seat 9 and 20 people, respectively. Both are equipped with all necessary computer, visual and audio technology.
Available for practical part of exam is a laboratory for 10 people, as well as a dark room with modern measuring and testing equipment, and a collection of samples which has been carefully selected over a period of 15 years.
Most of our lecturers come from industry.
Based on customers’ needs, training and certification can be delivered at other locations, including customers’ premises.
We are pleased that the participants’ feedback on either the training quality, or the setting is very positive.
A great emphasis is put on the selection of lecturers, as we are well aware that even the best possible infrastructure looks dull, unless there are experts with appropriate theoretical and practical knowledge.
A certification candidate can be any person, older than 16 years regardless of sex, residency, mother tongue, the employment status and the education level. Having earned the certificate, an NDT inspector is given the authorization to carry out all the activities within the scope listed in the certificate.
The validity of the certificate as per EN ISO 9712 is 5 years.
5 after intial certification renewal of certificate can be done by:
Certificate must be extended prior to the certificate expiry. Unless the validity is extended, the candidate has to apply for the certification again (take the exam). The responsibility of re-certification lies in the hands of a certificate holder.
10 years after the initial certification, a recertification can be done by:
Recertification needs to take place prior to the certificate expiry.
The certification procedure is clearly defined and a candidate should be familiar with it in advance.
A candidate who applies for the certification has to get trained for a specific method first. The training has to take place in the training center, approved by the accredited and notified certification body.
Prior to the training, a candidate has to submit the evidence of visual adequacy to the training center.
In the table below, the minimal duration of specific training is stated. If the level 2 certification is directly applied for, the durations of both levels must simply be added.
Level 1 (No. of days)
Level 2 (No. of days)
Level 3 (No. of days)
LT-P – pressure method
LT-TG – tracer-gas method
One training day lasts minimum 7 hours. At direct certification apply to Level 2, training days are summed together.
The application for certification is a document by means of which a candidate defines the scope he/she wants to be certified for. By signing the application, a candidate confirms he/she is familiar with the rules and the procedure of the certification.
As a minimum, the following information has to be contained in the application:
The required experience prior to certification is listed in the table below. If the level 2 certification is directly applied for, the experience of both levels has to be taken into consideration.
Partial experience for pressure method
The amount of work experience is based on a 7-hour working day, which can be achieved in one day or by accumulating hours. The maximum number of hours worked in one day is 12 hours. Experience in days is achieved by adding up all the hours divided by 7.
Personnel data, acquired in the course of the certification is confidential, only the list of names and surnames of certified personnel, together with the certification scope and number is made public.
There are three parts of the exam:
Specific and practical parts of the exam are carried out separately for SIST EN ISO 9712 and for SNT-TC-1A/CP-189.
In the table below, the number of questions required for level 3 (basic exam) as per SIST EN ISO 9712 is listed.
Number of questions
Technical knowledge of materials and process technology.
Understanding the qualification and certification system of certification body, based on SIST EN ISO 9712. It can be an open book exam.
General knowledge of at least four methods required for level 2, selected by a candidate from methods listed in Paragraph 5.1 of this procedure. One of those methods has to be volumetric (UT or RT).
15 for each test method (60 in total)
In the table below, the number of questions required for level 3 (exam in the main method) as per SIST EN ISO 9712 is listed.
Number of questions
Knowledge at level 3 of the selected testing method.
Use of NDT method in subject sector, including pertaining regulation, standards, specifications and procedures. It can be an open book exam in terms of regulation, standards, specification and procedures.
Planning of one or more NDT procedures in the appropriate sector. Pertaining regulation, standards, specifications and procedures have to be made available to a candidate.
In the table below, the number of questions required for level I and II as per SNT-TC-1A/CP-189 is listed.
To pass the exam in accordance with the SIST EN ISO 9712, a candidate has to achieve 70% as a minimum in each part of the exam (general, specific, practical or A, B, C and D, E, F). In addition, a 70% score has to be achieved as a minimum in the practical part of the exam for each sample and for an NDT procedure.
The passing grade in accordance with ASME standards is 70% at minimum in each part of the exam (i.e., general, specific or A, B, and C)and at least 80% for practical part.The average of all parts of the exam has to be 80% as a minimum.
Having received the certificate and the authorization by the NDT certificate holder – the employer, he/she obtains the right to carry out the activities within the scope of the certification.
For the training of non-destructive testing (NDT) personnel in accordance with SIST EN ISO 9712 in SNT-TC-1A (CP-189) we carry out the following training programs for certification:
In case you do not want to participate in the training for recertification in accordance to SIST EN ISO 9712, you can opt solely for the exam.
Should you choose not to participate in the training for recertification in accordance to CP-189/SNT-TC-1A, you can apply solely for the exam.
|UT equipment hire||150,00|
|Pocket certificate (ID card)||25,00|
To participate in the training the application has to be submitted to the Training center in writing or this application form may be used. Once the application is successfully received and the fee settled, the Training center makes the reservation and informs the customer.
The training and certification fee has to be settled prior to the training or examination to the transaction account at NLB d.d. SI56 0298 0001 6674 363. Until the training and certification fee is paid in full, the certificate is not delivered to the customer.
If the participant fails to pass the exam, he/she is allowed to retake the training, free of charge. When applying for a resit that has to be clearly indicated in the application form.
Applications have to be submitted at least ten (10) days prior to the training. The participation can be cancelled five (5) working days prior to the beginning of the course, in which case, the fee is reimbursed in whole. If the cancellation takes place later, the administrative costs (40% of the fee) shall be charged. Failure to participate in the training or certification procedure without prior cancellation, entails no fee refund. The cancellation has to be submitted in writing.
Partial resit is possible and is charged in accordance with the valid pricelist.
Pre-booking can be made for all announced trainings, and is advisable as a position safeguard, in case of too many applicants for a specific course.
If the participant fails to pass the exam, he/she may retake the training, with no charge. While applying for a retake, the status “resiting the exam” hast to be clearly marked in the application form.
The participation can be cancelled five working days prior to the beginning of the course, in which case the fee is reimbursed in whole. Past the date, the administrative costs (40% of the fee) are charged. Failure to take part in the training or certification, or to cancel the registration in due time constitutes grounds for withholding the reimbursement (100%). The cancellation has to be submitted in writing.
All documentation for certification application (application form with all the required attachments) in the electronic form has to be submitted prior to the beginning of the training to the Head of NDT personnel certification.
Domen Ribič, Head of Training Centre
+386 (0)7 49 12 509
+386 (0)40 609 436
It is possible to make a reservation for all scheduled training courses.
In the case that the participant fails the examination, it is possible to retake training course free of charge. When applying for retake, it must be appropriately marked in the application form.
The deadline for unsubscribing is five working days before the training starts. In this case, we will refund the registration fee in full. In case of cancellation after this deadline, we charge administrative costs (40% of the registration fee). In the case of no show without written cancelation, the registration fee is retained in full.
Program Lead, Certification of NDT personnel
+386 (0)7 49 12 484
+386 (0)41 365 942
Application for certification with all required attachments should be sent electronically, before the start of the training, to the Program Lead, Certification of NDT personnel
|wdt_ID||Month||Beginning of training||End of training||Examination||Method (Application)||Location||According to||Level|
|24||September||04/09/2023||08/09/2023||12/09/2023||Visual Testing||Krško||EN ISO 9712, SNT-TC-1A in CP-189||1+2|
|25||18/09/2023||22/09/2023||26/09/2023||Penetrant Testing||Krško||EN ISO 9712, SNT-TC-1A / CP-189||1+2|
|28||16/10/2023||20/10/2023||24/10/2023||Magnetic Testing||Online||EN ISO 9712||3|
|29||October||02/10/2023||06/10/2023||10/10/2023||Magnetic Testing||Krško||EN ISO 9712, SNT-TC-1A / CP-189||1+2|
|31||05/10/2023||05/10/2023||06/10/2023||Magnetic Testing - Recertification||Krško||SNT-TC-1A / CP-189||II|