Certification of personnel in NDT

Certification schemes are developed in accordance with the quality manual of the certification body C-WT, s.r.o and in accordance with the requirements of standard STN EN ISO / IEC 17024: 2013.

Certification procedure:

The applicant applies for certification by completing form AJ_FO 08 Application for certification of NDT personnel.

The application must be accompanied by:

  • the evidence of completion previous theoretical training in accordance with the requirements of standard STN EN ISO 9712: 2012
  • proof of sufficient visual ability – FO 11
  • confirmation of practice in NDT – part of form FO 08
  • proof of the highest education achieved (if it affects the scope of training or length of required practice)

Eligibility for issuing the certificate is demonstrated by the candidate by conducting the examination to verify the professional knowledge. The exam consists of a written and practical part. The written test for level 3 is divided into the basic exam and the exam from general method.

In the case of successfully accomplished examination, the supervisor of the test recommends the applicant to issue a certificate.

The certificate can only be issued to a person who signs the form FO 15 Agreement and conditions for the use of the certificate. The certificate is valid for 5 years, under the conditions that the certified person uses his/her certificate in accordance with this agreement, maintains regular contact with the certifying authority, provides him/her the information and documents required by this agreement, and if the certified person does not lose physical fitness due to loss of required visual skills.

After 5 years certificate can be extended by 5 years. After 10 years of initial certification, recertification is required.


Minimum required duration of industrial NDT practice:

NDT method Practice in months
Level I Level II Level III
ET, LT, RT, UT 3 9 18
MT, PT, VT 1 3 12
The length of practice is based on a nominal working time of 40 hours/week, or the legal working week. If a person works for more than 40 hours per week, the total number can be counted into practice, but proof of this practice is required.

The possibilities of shortening the required practice length are described in standard STN EN ISO 9712: 2012, but not more than 50% of the originally requested time.