Detail of GB/T 39455-2020

Introduction of GB/T 39455-2020

GB/T 39455-2020 Non-destructive testing - Qualification and certification of personnels 1 Scope This document specifies requirements for the qualification and certification of personnel who perform industrial non-destructive testing (NDT) in the following methods. a) acoustic emission testing; b) eddy current testing; c) leak testing (hydraulic pressure tests excluded); d) magnetic testing; e) penetrant testing; f) radiographic testing; g) strain gauge testing; h) thermographic testing; i) ultrasonic testing; j) visual testing (direct unaided visual tests and visual tests carried out during the application of another NDT method are excluded). The system specified in this document is also applicable to other NDT methods or to NDT techniques within an established NDT method, provided a comprehensive scheme of certification exists and the NDT method or NDT technique is covered by international, regional or national standards or the NDT method or the NDT technique has been demonstrated to be effective to the satisfaction of the certification body. Note 1: The term "industrial" implies the exclusion of applications in the field of medicine. Note 2: CEN/TR 14748 provides guidance on the methodology for qualification of non-destructive tests. Note 3: This document specifies requirements for what are, in effect, third party conformity assessment schemes. These requirements do not directly apply to conformity assessment by second or first parties, but relevant parts of this document can be referred to in such arrangements. Note 4: The term “direct unaided visual testing” implies where there is an uninterrupted optical path from the observer’s eye to the test area and the observer uses no tools or devices (e.g. mirror, endoscope, fibre optic). Note 5: Calculations of strain based on other NDT methods are excluded. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 17024:2012 Conformity assessment - General requirements for bodies operating certification of persons ISO 18490:2015 Non-destructive testing - Evaluation of vision acuity of NDT personnel 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 applicant person who has submitted an application to be admitted into the certification process (3.8) 3.2 authorized qualification body body, independent of the employer (3.11), authorized by the certification body (3.6) to prepare and administer examinations (3.12) 3.3 basic examination element written examination (3.12), at Level 3, which demonstrates the candidate’s (3.4) knowledge of the materials science and process technology and types of discontinuities, the specific qualification (3.33) and certification system, and the basic principles of NDT methods (3.25) as required for Level 2 Note 1: For an explanation of the three levels of qualification, see Clause 6. Note 2: The qualification and certification system is specified in this document. 3.4 candidate applicant (3.1) who has fulfilled specified prerequisites and has been admitted to the certification process (3.8) 3.5 certificate document in the form of a letter, card or other medium (e.g. digital certificate), issued by a certification body (3.6) under the provisions of this document, indicating that the named person has fulfilled the certification requirements (3.9) 3.6 certification body body that administers procedures for certification according to specified requirements 3.7 certification cycle maximum period of time permitted from the date of certification to the date of recertification (3.34) inclusive of the renewal (3.36) period 3.8 certification process activities by which a certification body (3.6) determines that a person fulfils certification requirements (3.9), including application, assessment, decision on certification, renewal (3.36), recertification (3.34) and use of certificates (3.5) and logos/marks 3.9 certification requirements set of specified requirements, including requirements of the scheme to be fulfilled in order to establish or maintain certification 3.10 competence ability to apply knowledge and skills to achieve intended results 3.11 employer legal entity by whom the candidate (3.4) is employed Note: A candidate may be self-employed. 3.12 examination mechanism that is part of the assessment which measures a candidate's (3.4) competence (3.10) by one or more means 3.13 examination centre centre approved by the certification body (3.6) where examinations (3.12) are carried out 3.14 examination element component of an examination (3.12) 3.15 examiner person competent to conduct and score an examination (3.12), where the examination requires professional judgement 3.16 general examination element written examination (3.12), at Level 1 or Level 2, concerned with the principles of an NDT method (3.25) 3.17 higher education formal learning that occurs after completion of secondary education in the field of engineering or science 3.18 industrial experience work activities (3.46) performed under supervision (3.45), in the NDT method (3.25) in the sector (3.37) concerned, needed to acquire the skill and knowledge to fulfil the provisions of qualification (3.33) 3.19 invigilator person authorized by the certification body (3.6) who supervises an examination (3.12), but does not evaluate the competence (3.10) of the candidate (3.4) 3.20 job-specific training training, provided by the employer (3.11) (or their agent) to the certificate (3.5) holder in aspects of non-destructive testing specific to the employer’s products, NDT equipment, NDT procedures (3.27), and applicable codes, standards, specifications (3.40) and procedures, leading to the award of operating authorizations (3.30) 3.21 main method examination element written examination (3.12), at Level 3, which demonstrates the candidate’s (3.4) general and specific knowledge, and the ability to write NDT procedures (3.27) for the NDT method (3.25) as applied in the industrial or product sector(s) (3.37) for which certification is sought

Contents of GB/T 39455-2020