ASD-STAN/D 4

Date: 2025-03

prEN 4179:2025

Secretariat: DIN

Aerospace series — Qualification and approval of personnel for nondestructive testing

Luft- und Raumfahrt — Qualifizierung und Zulassung des Personals für zerstörungsfreie Prüfungen

Série aérospatiale — Qualification et agrément du personnel pour les essais non destructifs

CCMC will prepare and attach the official title page.

Contents Page

European foreword 4

1 Scope 5

1.1 Purpose 5

1.2 Applicability 5

1.2.1 Implementation 5

1.3 Methods 6

1.3.1 NDT methods 6

1.3.2 Other methods 6

2 Normative references 6

3 Terms and definitions 6

4 General requirements 11

4.1 Written practice 11

4.1.1 Qualification and certification 11

4.1.2 Additional requirements 12

4.1.3 NDT techniques 12

4.1.4 Training outlines 12

4.1.5 Examination practices 12

4.1.6 Administration 12

4.1.7 Records 12

4.2 Methods 12

4.3 Responsibility 12

4.3.1 General 12

4.3.2 Responsible Level 3 13

4.3.3 Outside agency 13

5 Qualification and certification levels 13

5.1 General 13

5.2 Trainee 13

5.3 Level 1-Limited 14

5.4 Level 1 14

5.5 Level 2 14

5.6 Level 3 15

5.7 Auditor 15

6 Training and experience 15

6.1 Training 15

6.1.1 General 15

6.1.2 Training outlines 16

6.1.3 Previous training 17

6.1.4 Equivalent training 17

6.1.5 Health and safety training 17

6.2 Training and examination personnel 18

6.2.1 Responsible Level 3 18

6.2.2 Examiners 18

6.2.3 Instructors 18

6.2.4 OUTSIDE AGENCIES 18

6.3 Experience 18

6.3.1 General 18

6.3.2 Previous experience 18

6.3.3 Equivalent experience 19

6.4 Emerging NDT methods 20

6.4.1 General 20

6.4.2 Minimum hours 20

6.4.3 Levels 1 and 2 20

6.4.4 Level 3 20

7 Examinations 21

7.1 Purpose 21

7.1.1 General 21

7.1.2 Vision examination 21

7.1.3 Basic examination 21

7.1.4 General examination 22

7.1.5 Specific examination 22

7.1.6 Practical examination 22

7.2 Administration of examinations 23

7.2.1 General 23

7.2.2 Administration by an outside agency 24

7.2.3 Scoring 24

7.2.4 Re-examination 24

8 Certification 24

8.1 General 24

8.2 Records 25

8.2.1 Minimum requirements 25

8.2.2 Record availability 25

8.3 Loss of certification 25

8.3.1 Expiration 25

8.3.2 Suspension 26

8.3.3 Revocation 26

8.4 Reinstatement of certification 26

8.5 Recertification 26

8.5.1 Level 1 and Level 2 26

8.5.2 Level 3 26

8.5.3 Hands-on practical examination 27

8.6 Annual proficiency review 27

Annex A (normative) Credit system for recertification of Level 3 NDT personnel 28

Annex B (normative) Qualification and certification of Level 1-limited 31

Annex C (normative) National Aerospace Non-Destructive Testing Boards (NANDTB) 34

Annex D (normative) Credit system for initial certification to Level 3 37

European foreword

This document (prEN 4179:2025) has been prepared by ASD-STAN.

After enquiries and votes carried out in accordance with the rules of this Association, this document has received the approval of the National Associations and the Official Services of the member countries of ASD-STAN, prior to its presentation to CEN.

This document is currently submitted to the CEN Enquiry.

This document will supersede EN 4179:2021.

prEN 4179:2025 includes the following significant technical changes with respect to EN 4179:2021:

— updated Table 5 and Table 6 Education Requirements;

— modified Table 7 Vision Requirements and Specification of ISO 18490:2015;

— added Prerequisite Requirements for Basic Level 3 Exam;

— updated Reinstatement of Certifications;

— added Annex D - Credit System for Initial Certification to Level 3.

This document establishes the minimum requirements for the qualification and certification of personnel performing non-destructive testing (NDT), nondestructive inspection (NDI), or nondestructive evaluation (NDE) in the aerospace manufacturing, service, maintenance and overhaul industries. For the purposes of this document, the term NDT will be used and will be considered equivalent to NDI and NDE.

In Europe, the term “approval” is used to denote a written statement by an employer that an individual has met specific requirements and has operating approval. The term “certification” as defined in 3.2 is used throughout this document as a substitute for the term “approval”. Except when otherwise specified in the written practice, certification in accordance with this document includes operating approval.

This document applies to personnel who:

— use NDT methods or equipment to test and/or accept materials, products, components, assemblies or sub-assemblies;

— are directly responsible for the technical adequacy of the NDT methods and equipment used;

— operate automatic interpretation or evaluation systems;

— approve NDT procedures or work instructions;

— audit NDT facilities; or

— provide technical NDT support or training.

This document does not apply to individuals who only have administrative or supervisory authority over NDT personnel or to research personnel developing NDT technology for subsequent implementation and approval by a certified Level 3. See Clause 8 regarding applicability to personnel performing specialized inspections using certain direct readout instruments.

Definition Automated equipment refers to machinery and systems designed to perform tasks without human intervention. In a completely automated industrial process, these systems operate independently to execute various functions.

This document addresses the use of a National Aerospace NDT Board (NANDTB). NANDTBs are only used as specified per Annex C and it is not mandatory to have such a board for compliance with this document. Personnel certified to previous revisions of NAS410 or EN 4179 need not recertify to the requirements of this document until their current certification expires.

This document contains detailed requirements for the following NDT methods:

When invoked by engineering, quality, cognizant engineering organization or prime contractor requirements, this document applies to other current and emerging NDT methods used to determine the acceptability or suitability for intended service of a material, part, component, sub-assembly or assembly. Such methods can include, but are not limited to, acoustic emission, neutron radiography, leak testing, and holography.

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 9712, Non-destructive testing — Qualification and certification of NDT personnel

ISO 18490:2015, Non-destructive testing — Evaluation of vision acuity of NDT personnel

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp/

— IEC Electropedia: available at https://www.electropedia.org/

3.1

automated equipment

machinery, systems, and/or apparatuses designed to perform tasks, partially or fully, without human intervention in the task being performed

3.2

basic examination

examination utilized to verify a Level 3 candidate’s knowledge of NDT methods, materials, and manufacturing processes used by the employer at a Level 2 proficiency and NAS410/EN 4179 requirements

3.3

certification

written statement by an employer that an individual has met the applicable requirements of this document

3.4

closed book examination

examination administered without access to any reference materials

3.5

Cognizant Engineering Organization

engineering or NDT organization of the prime contractor, OEM (Original Equipment Manufacturer), or end user authorized to make NDT-related decisions and give NDT-related approvals

3.6

committee or panel meetings

meetings, conferences, symposia, seminars, trade association meetings, panels, etc. organized or sponsored by a regional, national or international NDT organization or technical society

Note 1 to entry: Foreign or international meetings qualify if the sponsor(s) are national or international.

3.7

committee projects

specific identifiable official activities of regional or national technical societies, committees or work groups, such as round robins or individual studies, preparation of guidelines, appendices, specifications, recommended practices, procedures, codes or standards, etc

Note 1 to entry: Documentation may include memos or reports, drafts of committee output documents, or official written comments submitted by the candidate on such documents.

3.8

direct observation

when the observer is able to view the NDT process in a manner that permits uninterrupted, visual and verbal two-way contact with the trainee

3.9

direct readout instrument

instruments that physically display measurements in dimensional or electrical units (e.g. inches, millimetres or % IACS) either as digital readout or an analogue display, such as a scale/pointer configuration, or that display go/no-go outputs, and do not require special skills or knowledge to set up the instrument or inspection and do not involve adjusting parameters or signal displays such as gates, delays, gain, or phase to obtain valid measurements

EXAMPLE Common direct readout instruments include basic ultrasonic thickness gauges without an oscilloscope display, and eddy current coating thickness gauges.

3.10

documented

condition of being recorded in written or electronic form

3.11

employer

organization employing or contracting the services of one or more individuals who perform NDT

Note 1 to entry: Self-employed individuals are included in this definition.

3.12

evaluation

review following interpretation of the indications noted during an NDT inspection to determine whether the indications meet specified acceptance criteria or to determine the significance of the indication

3.13

examination

formal, controlled, documented testing conducted in accordance with a documented written practice to verify a candidate’s visual capability, skill, or knowledge of an NDT method

3.14

examiner

Level 3 certified to this document and designated by the Responsible Level 3 to administer all or part of the qualification process in the NDT method(s) in which the Examiner is certified

3.15

experience

actual performance of an NDT method conducted in the work environment in line with expected duties/training plan resulting in the acquisition of knowledge and skill

Note 1 to entry: This does not include formal classroom training but may include laboratory and on-the-job training as defined by the employer’s written practice.

3.16

formal education

engineering or science studies at a technical school, college, or university

3.17

formal training

organized and documented program of learning activities designed to impart the knowledge and skills necessary to be qualified to this document

Note 1 to entry: Formal training may be a mix of classroom, practical, and programmed self-instruction as approved by the Responsible Level 3 or Examiner.

3.18

general examination

written examination addressing the basic principles and theory of an NDT method

3.19

indication

response or evidence of a condition resulting from an NDT inspection that requires interpretation

3.20

instructor

individual designated or approved by the Responsible Level 3 or Examiner to provide formal training or on-the-job training for NDT personnel

3.21

interpretation

determination of whether indications are relevant or non-relevant

3.22

LEVEL 3 task

activity for which Level 3 certification is required

EXAMPLE Approval of an NDT Technique Instruction or NDT procedure

3.23

method

one of the disciplines of nondestructive testing (e.g. ultrasonic, radiography, etc.) within which different techniques may exist

3.24

National Aerospace NDT Board (NANDTB)

independent aerospace organization representing a nation's aerospace industry that is chartered by the participating prime contractors and recognized by the nation’s regulatory agencies to provide or support NDT qualification and/or examination services in accordance with Annex C of this document

3.25

non-film radiography

radiographic imaging that does not use a film-based recording medium

EXAMPLE Non-Film radiography includes, but might not be limited to, Computed Radiography, Digital Radiography, Radioscopy, and Computed Tomography.

3.26

on-the-job training

training in the work environment to gain experience in learning instrument set-up, equipment operation, applying the process, and recognition, interpretation and evaluation of indications under appropriate technical guidance

3.27

open book examination

examination administered with access to specific reference material that is provided with or referenced in the examination

3.28

operating approval

written statement issued by the employer, based upon the scope of certification, authorizing the individual to carry out defined tasks

Note 1 to entry: Such authorization can be dependent on the employer having provided job or task-specific training.

3.29

outside agency

independent company or organization outside the employer who provides NDT services to implement the requirements of this document, such as training and examination of NDT personnel

Note 1 to entry: Consultants and self-employed individuals are included in this definition.

3.30

practical examination

examination to demonstrate an individual's ability to conduct an NDT method as used by the employer

Note 1 to entry: Questions and answers need not be written, where observations and results are documented.

3.31

prime contractor

organization having overall responsibility for design, control and delivery of a system, component or product

3.32

procedure

written general “how to” instruction for conducting a given process

Note 1 to entry: Procedures are used to develop work instructions, as defined in 3.38.

3.33

qualification

skills, training, knowledge, examinations, experience and visual capability required for personnel to properly perform to a particular level

3.34

Responsible Level 3

individual certified as a Level 3 designated by the employer with the sole responsibility and authority to ensure that the requirements of this document are met and to act on behalf of the employer

3.35

specific examination

written examination to determine an individual's understanding of operating procedures, codes, standards, product knowledge, test techniques, equipment and specifications for an NDT method as used by the employer

3.36

sub-contractor

organization responsible to the prime contractor for the manufacture or maintenance of aerospace products

EXAMPLE For the purposes of this document, this includes suppliers and processors.

3.37

task

activity for which certification is required

EXAMPLE The approval of an NDT Technique Instruction or NDT procedure.

3.38

technique

category within a method as defined in the written practice by the employer

3.39

test sample

part or image containing one or more known and documented natural or artificial discontinuities, flaws or conditions used in the practical examination to demonstrate the candidate's proficiency in an NDT method

EXAMPLE Test samples can refer to actual hardware, fabricated test parts, or, when applicable, images of actual hardware such as radiographs.

3.40

work instruction

document detailing the NDT technique and testing parameters to be used for the inspection of a specific component, group of parts (e.g. “aluminum extrusions” or “steel brackets”), or assembly

Note 1 to entry: These are sometimes referred to in the industry as “technique sheets” or “data cards”.

Note 2 to entry: Such work instructions are based on procedures defined in 3.30.

3.41

written

retrievable electronic or hard copy

3.42

written practice

document that describes an employer’s requirements and methodology for controlling and administering the NDT personnel qualification and certification process

The employer shall develop and maintain a written practice for the qualification and certification of NDT personnel that meets the requirements of this document. The written practice shall address the procedural details necessary for the employer to implement an NDT qualification and certification program and shall include the details of the NDT qualification and certification process, including:

— the levels of qualification and certification used by the employer;

— personnel duties and responsibilities;

— training and experience requirements;

— certification and recertification requirements;

— records and record keeping requirements;

— requirements for expiration, suspension, revocation and reinstatement of certifications;

— process for annual proficiency review.

The written practice shall be approved by the Responsible Level 3. The written practice shall be available for review by the employer’s customer(s) and regulatory agencies.

The written practice shall include any additional requirements levied by the employer or cognizant engineering organization, such as additional certification levels or increased experience requirements.

The written practice shall include:

— the specific technique(s) within each method;

— the actions to be taken concerning additional training and experience;

— the written and practical testing, when additional techniques are introduced for a currently certified individual.

The written practice shall reference or include the NDT training outlines used by the employer. If an outside agency is used to provide training, the Responsible Level 3 shall verify that the training meets the employer's requirements.

The written practice shall include:

— the designation of the individual(s) or organization(s) responsible for administering examinations;

— the number of examination questions to be administered;

— the specific visual acuity examination method to be used;

— if required, the use of a general examination for recertification.

The written practice shall include the identification of the individual(s) or organization(s) responsible for administering and maintaining all or part of the employer's certification program.

The written practice shall include the designation of the individual(s) or organization(s) responsible for maintaining the qualification and certification records and where such records shall be kept.

For the methods listed in 1.3.1, the minimum requirements for training, experience and examination are detailed in Sections 6 and 7. These requirements shall serve as a guideline for other current or emerging methods as defined in 1.3.2.

The employer is responsible for the implementation of, and compliance with, this document and for certifying qualified personnel. In addition, the prime contractor shall be responsible for compliance to this document by their sub-contractors. Employers using outside agencies shall be responsible for assuring that the appropriate requirements of this document are met. The employer is solely responsible for the certification of its employees and cannot certify for another employer. Individuals cannot qualify themselves. Self-employed individuals may certify themselves provided they have a written practice and have been qualified to the requirements of this document by another individual certified to Level 3 in accordance with this document.

The employer shall identify in writing a “Responsible Level 3” to act on its behalf in matters regarding the NDT qualification and certification process. The Responsible Level 3 shall:

— be certified in accordance with this document as a Level 3 in one or more NDT methods;

— have a thorough knowledge of the written instructions, codes, specifications and standards used by the employer;

— have a thorough knowledge of the materials, components, product technologies, NDT methods and NDT techniques used by the employer.

Additional Examiners as defined in this document shall be identified and delegated in writing as necessary to provide coverage for all methods used by the employer. The Responsible Level 3 may be an outside agency but in this case, they can only qualify personnel, as only the employer can certify personnel. The Responsible Level 3 shall be responsible for implementation of this document and the overall administration of the qualification and certification program.

An employer may use a Level 3 certified in accordance with this document from an outside agency to develop a certification program, act as the Responsible Level 3, examine NDT personnel or perform any other qualification or Level 3 function. An outside agency may qualify, but not certify personnel. The employer shall document the suitability of any outside agency selected to perform any function in meeting the requirements of this document. This documentation shall be of sufficient detail to justify the outside agency’s ability to perform the required Level 3 function(s).

The four basic levels of certification are Level 1-Limited, Level 1, Level 2 and Level 3. The employer may subdivide, add or limit levels as appropriate, but cannot eliminate or reduce the minimum requirements for each level. If the employer does not wish to use all of the levels, those levels to be used shall be documented in the employer’s written practice. Where other variations or subdivisions are implemented, the requirements and responsibilities shall also be detailed in the employer’s written practice.

NDT personnel shall not independently perform the functions listed in 5.3, 5.4, 5.5 and 5.6 if not certified to the appropriate level in the applicable technique/method.

An individual who is documented as participating in a training program for an NDT method and is in the process of becoming qualified for certification to Level 1-Limited, Level 1 or directly to Level 2, and certified personnel extending the scope of certification shall be considered a trainee. In the technique/method in which they are preparing for certification, trainees shall:

— be documented as a trainee and be actively participating in a training program for a stated NDT method for a limited and specified period of time;

— obtain experience under the direct observation of a Level 2 or Level 3 in the same method;

— obtain experience under the direct observation of a Level 1 in the same method, or instructor, only when approved by the Responsible Level 3;

— not make accept or reject decisions;

— not independently conduct tests;

— not independently perform any other NDT function.

Annex B defines the requirements for Level 1-Limited.

In the method and technique in which certified, Level 1 individuals shall:

— be able to follow work instructions;

— have the skills and knowledge to process parts, document results and perform equipment standardization in accordance with approved work instructions;

— have the skills and knowledge to carry out any necessary preparation of parts before or after testing in accordance with approved work instructions;

— have the skills and knowledge to conduct system performance checks in accordance with the applicable process standard;

— receive guidance or supervision from a certified Level 2 or Level 3 in that method when necessary;

— when specified in the written practice and approved by the Responsible Level 3, may perform interpretations and evaluations of specific product(s) or product form(s) for acceptance or rejection in accordance with approved work instructions.

In the method and technique in which certified, Level 2 individuals shall:

— have the skills and knowledge to set up and standardize equipment, process parts, interpret and evaluate for acceptance or rejection, and document results;

— be thoroughly familiar with the scope and limitations of the technique/method;

— have the skills and knowledge to conduct system performance checks in accordance with the applicable process standard;

— be capable of providing the necessary guidance and/or supervision to trainees and Level 1 personnel;

— be familiar with the codes, standards, and other contractual documents that control the method as used by the employer;

— when specified in the written practice, be capable of developing work instructions from approved general procedures. Such work instructions shall require final approval by a Level 3 certified in the method;

— have a basic knowledge of relevant product manufacturing and inspection technology;

— when specified in the written practice, have a basic knowledge of aircraft or vehicle maintenance.

In the method in which certified, Level 3 individuals shall:

— have the skills and knowledge to interpret codes, standards, and other contractual documents that control the NDT method(s);

— be capable of assuming technical responsibility for the NDT facility and staff;

— be capable of selecting the method and technique for a specific test;

— be capable of preparing and verifying the adequacy of procedures and work instructions;

— approve NDT procedures and work instructions for technical adequacy;

— have a general knowledge of other NDT methods, product manufacturing and their related sequencing, and test technologies used by the employer;

— when specified in the written practice, have a basic knowledge of aircraft or vehicle maintenance;

— be capable of providing or directing training, examination, and certification of personnel;

— conduct NDT for the method in which they are certified for the acceptance of parts and document the results if a demonstration of proficiency in this ability was included in the practical examination;

— when required by the written practice, be capable of auditing outside agencies to ensure the requirements of the written practice are met.

Employer personnel performing technical NDT audits, surveys or assessments shall:

— be designated by the Responsible Level 3;

— have the training, skills, and knowledge to understand the processes and procedures utilized in the application of NDT processes;

— be familiar with the applicable codes, standards, and other contractual documents that control the applicable method(s).

Candidates for certification to all levels shall successfully complete sufficient formal training to become proficient with the principles and practices of the applicable test method and technique(s) and be capable of carrying out the duties specified in Section 5. Formal training shall be conducted prior to, or in conjunction with, on-the-job training. All completed NDT training shall be documented.

The minimum training hours for Level 1 and Level 2 are provided in Table 1 and Table 2 for the specified NDT methods. Individuals cannot certify to Level 3 without prior certification to Level 2 in the method. Military equivalency of training and experience can be determined by the Responsible Level 3 or Examiner in accordance with sections 6.1.4 and 6.3.3 for certification to Level 3.

40 additional hours of training is required for current certified Level 3 radiography personnel transitioning to either film or non-film radiography.

General, specific, and practical training may be obtained with the employer or outside agency but shall always be supplemented by on-the-job training with the employer.

Table 1 — Minimum formal training hours for Level 1 and Level 2

Table 2 — RT formal training hours for transition to film or non-film

All training shall be conducted in accordance with a detailed outline approved by the Responsible Level 3 or Examiner. The outline shall include a list of references from which the training material is derived. As a minimum the training shall include:

— basic theory;

— test principles, including choice of NDT methods, relevance to different materials and part and test variables;

— product forms and materials; defect formation and characterization;

— equipment operation and standardization;

— the importance of process controls;

— the importance of appropriate processing steps and parameters;

— safety regulations;

— applicable techniques and the advantages and disadvantages of each;

— limitations and capabilities of each method and technique;

— applicable specifications, codes, operating procedures and work instructions;

— if applicable, evaluation, interpretation and documentation of test results.

If an outside agency is used to provide training, the Responsible Level 3 shall verify that the training meets the employer's requirements.

For personnel credited with previous training, or personnel not certified within 12 months of their training, refresher training shall be provided. Previous training shall be documented to be accepted by the employer. As a minimum, refresher training shall cover:

— products;

— equipment set-up, operation, and standardization;

— specific operating procedures;

— applicable techniques;

— interpretation and evaluation of NDT results;

— safety;

— applicable codes, standards, and specifications.

For documentation of previous training, records other than original records may be accepted if adequacy and equivalency have been determined to be acceptable by the Responsible Level 3 or Examiner.

For personnel previously certified under NAS410, EN 4179 or other recognized NDT qualification programs, the adequacy and equivalency of their previous training to the requirements of Table 1 and Table 2 or Annex D shall be determined and documented by the Responsible Level 3 or Examiner. All or a portion of previous hours or points may be accepted as applicable.

Prior to certification, all candidates seeking radiography qualification shall have received instruction on the hazards and safety requirements associated with ionizing radiation and be knowledgeable of the applicable regulations and laws.

NOTE Regulations relating to hazardous substances, accident prevention and safe working practices can apply.

The Responsible Level 3 shall maintain overall control and cognizance over the NDT training and examination program, including designating or approving qualified Examiners, instructors and outside agencies.

When necessary, Examiners shall be designated or approved in writing by the Responsible Level 3. All Examiners shall be certified in accordance with this document. As determined and documented by the Responsible Level 3, an Examiner can prepare, administer and grade written or practical NDT examinations, and administer all or part of, the qualification process in the method in which they are certified.

Instructors shall have the skills and knowledge to plan, organize, and present classroom training and practical exercises in accordance with approved training outlines. Instructors shall be designated or approved by the Responsible Level 3 or Examiner. Instructors where designated by the Responsible Level 3 only, shall have the competence to provide on-the-job training (OJT).

When an outside agency is used, the outside agency shall provide the employer with the names, evidence of qualifications and, if applicable, evidence of certifications held by the personnel conducting the training and examination.

Candidates for certification to Level 1-Limited, Level 1, Level 2 or Level 3 shall have sufficient practical experience to ensure that they are capable of performing the duties of the level for which certification is sought. Practical experience shall cover the relevant test techniques, tasks, and duties at the appropriate level.

The minimum experience requirements for Level 1 and Level 2 are provided in Table 3 and Table 4, as applicable.

The experience requirements for Level 3 are in Table 5 and 6.4.3, as applicable. As an alternative to meeting the experience requirements of Table 5, candidate may qualify for Level 3 in a method via competency demonstration per Annex D. As documented in the written practice, on-the-job training for the purpose of gaining experience shall be overseen by personnel certified in accordance with this document or instructors when designated by the Responsible Level 3. For trainees gaining experience, documentation shall be available for review to indicate individual, date, description of activity within the method, hours, and certified personnel providing direct observation.

Additional experience requirements for current Level 3 radiography personnel transitioning to either film or non-film radiography are 240 hours with guidance or supervision from an examiner, instructor, or outside agency.

A candidate's experience with a previous employer may be accepted by the current employer only if such experience is documented and approved by the Responsible Level 3 or Examiner. All or a portion of previous hours may be accepted as applicable. For documentation of previous experience, records other than original records may be accepted if adequacy and equivalency have been determined to be acceptable by the Responsible Level 3 or Examiner.

For personnel previously certified under NAS410, EN 4179 or other recognized NDT qualification program, the adequacy and equivalency of their previous experience to the requirements of Table 3, Table 4, or Table 5 shall be determined and documented by the Responsible Level 3 or Examiner.

Table 3 — Minimum experience requirements for Level 1 and Level 2

Table 4 — RT experience requirements for transition to film or non-film

Table 5 — Minimum experience requirements for Level 3

The requirements for personnel training, experience, and examination for these other methods shall be established in accordance with 6.4 and shall be documented by the employer.

The minimum required training and experience hours for methods used by the employer that are not listed in 1.3.1, Table 1, and Table 3 shall be established by the Responsible Level 3.

When determining training or experience hours for new methods not listed in Tables 1 and 3, the minimum hours shall be based on the requirements for a method of similar complexity listed in Tables 1 and 3. This only applies to “other” or emerging methods as defined in 1.3.2 and cannot be applied to those methods as identified in 1.3.1.

When approved by the cognizant engineering organization and authorized by the employer’s written practice, an employer may qualify and certify its first Level 3 in a new NDT method not listed in 1.3.1 provided:

— the candidate has the skill and ability to carry out the Level 3 responsibilities in 5.6;

— all of the requirements in Table 6 are met.

The requirements of 6.4.1, 6.4.2 and 6.4.3 only apply to “other” or emerging methods as defined in 1.3.2 and cannot be applied to those methods as identified in 1.3.1.

Table 6 — Minimum requirements for first Level 3 in an emerging NDT method

Examinations to verify the technical qualifications of candidates shall consist of a basic (Level 3 only), general, specific and practical examination for each method in which the candidate is to be certified. Specific examinations shall be administered after a minimum of 75 % of Table 3 requirements have been completed. Table 3 requirements shall be complete prior to administration of practical examination. An examination for visual acuity shall also be conducted prior to the candidate’s first certification and periodically thereafter.

The requirements for the vision examination, the questions or question database used for the basic, general, and specific examinations and the checklist for the practical examination shall be available for review by the employer’s customers. Examinations and test samples shall be made available to the candidates only during administration of the examinations.

Verbal translation of written examinations shall not be permitted.

The vision examination for all levels shall ensure that the applicant’s near vision and colour perception meet the requirements of Table 7. Vision requirements do not apply to instructors or auditors. Near vision tests shall be administered annually and colour perception tests shall be administered at least every 5 years.

The employer shall ensure the flow-down of the Table 7 vision requirements to all necessary personnel and/or facilities. Snellen and Jaeger tests shall be administered by trained personnel designated by the Responsible Level 3 or by qualified medical personnel. When vision correction is necessary to pass the visual acuity exam, vision correction shall be worn during all testing/inspections. Any limitations in colour perception shall be evaluated by the Responsible Level 3 prior to certification and shall be approved in writing. After any condition or procedure that could affect vision, the Responsible Level 3 shall be notified, and the individual shall be re-examined.

Table 7 — Vision requirements

For Level 3 candidates, a basic examination is required. The basic examination shall consist of:

— a minimum of ten (10) closed book questions per method, covering at least four (4) NDT methods chosen by the Responsible Level 3 from 1.3.1, including the employer NDT methods (the Responsible Level 3 or NANDTB may define how test methods are selected for examination);

— a minimum of ten (10) closed book questions covering materials and manufacturing processes;

— a minimum of ten (10) open book questions covering NAS410/EN 4179 requirements.

The minimum score shall be 80 % for each section of the Basic examination. The Basic examination is a prerequisite to certification examinations and scores shall not be factored into the certification examination composite score.

Passing a Basic examination is a prerequisite for any Level 3 candidate and shall be completed prior to method certification. Only one basic examination is required per Level 3 candidate and need not be repeated for each Method certified. Possession of a current ASNT, ISO 9712, or NANDTB qualification at the appropriate level by the candidate may be satisfactory evidence that the basic examination requirement is satisfied as defined in the employer’s written practice, provided that NAS410/EN 4179 questions have been carried out with an 80 % minimum score.

The general examination shall be a closed book examination covering the cross-section of the applicable method at the appropriate level. A minimum of 40 questions shall be administered for the general examination at Levels 1, 2 or 3.

For Level 3, possession of a current ASNT, ISO 9712, or NANDTB qualification at the appropriate level by the candidate may be satisfactory evidence that the general examination requirement is satisfied as defined in the employer’s written practice.

The specific examination shall be an open book examination covering the requirements and use of the specifications, codes, standards, equipment, operating procedures, product knowledge, and test techniques the candidate may use in the performance of their duties with the employer.

A minimum of 30 questions shall be administered for the specific examination at Levels 1, 2, and 3. Reference material, as determined by the Responsible Level 3 or Examiner, such as specifications, tables, formulas, etc. shall be provided. Questions utilizing such material shall require understanding of the information contained therein rather than merely finding its location. Questions without a written answer shall have a minimum of 3 multiple choice answers. True/False questions shall include an explanation portion to each question.

General

The practical examination shall consist of a demonstration of proficiency in performing tasks that are typical of those to be accomplished in the performance of the candidate’s duties. If the candidate is required to demonstrate proficiency in the application of the process as well as interpretation of results, hardware test samples shall be used.

The candidate shall not be familiar with the test samples and the location of the discontinuities located therein. If the candidate is only required to interpret the results and not perform the process of generating the image, the test samples may be images, such as radiographs or other resultant test data. A written checklist covering the topics detailed in the following sub-paragraphs shall be developed and completed by the Responsible Level 3 or Examiner to ensure adequate coverage and to assist in the administration and grading of the examination.

In addition to using the checklist, the Responsible Level 3 or Examiner shall determine and document how the examination results obtained by the candidate are to be documented (e.g. part maps, drawings, sketches, written descriptions, etc.). All such documentation shall become part of the examination and filed accordingly.

Level 1-Limited

Annex B defines requirements for Level 1-Limited.

Level 1

The candidate shall demonstrate proficiency by using a work instruction to process at least 2 test samples of differing configurations for each method, with at least one test sample for each technique for which certification is sought. When only one configuration of hardware is to be inspected upon certification, both test samples may be of the same configuration.

The test samples shall meet the definition in 3.37 and shall be representative of the products to be encountered by the candidate in the performance of their duties with the employer. If approval to accept or reject hardware is to be granted by the Responsible Level 3, the candidate shall interpret, evaluate, and document the results of the inspection of the test samples.

The checklist shall include proficiency in the use and standardization of equipment and materials, adherence to procedural details and, if applicable proficiency in the interpretation and evaluation of indications.

Level 2

The candidate shall demonstrate proficiency by inspecting at least 2 test samples of differing configurations for each method, with at least one test sample for each technique for which certification is sought. When only one configuration of hardware is to be inspected upon certification, both test samples may be of the same configuration.

The test samples shall meet the definition in 3.37 and shall be representative of the products to be encountered by the candidate in the performance of their duties with the employer. In addition to the two minimum known and documented test samples with discontinuities, specimens without discontinuities may be included. The candidate shall document the NDT results in accordance with the applicable acceptance criteria.

The checklist shall include proficiency in the use and standardization of equipment and materials, adherence to procedural details, the accuracy and completeness of interpretation and evaluation of indications.

Level 3

The candidate shall demonstrate proficiency by preparing an NDT procedure or work instruction appropriate to the employer's current requirements for the method. The procedure or work instruction shall be developed in conjunction with the general and/or specific examination(s) required for certification or recertification, as applicable.

The results of the practical examination shall be documented, and a checklist shall be used to address the technical accuracy, technical content, and clarity of the procedures or written instructions prepared by the candidate.

When the candidate's duties will include processing and/or acceptance or rejection of products, proficiency in performing such tasks shall be demonstrated by a hands-on practical examination equivalent to Level 2 in accordance with 7.1.5.3.

The administration and grading of all examinations shall be the responsibility of the Responsible Level 3 or Examiner, either of which shall be certified in the applicable method. The Responsible Level 3 or Examiner may delegate in writing the administration and grading of examinations using multiple choice questions to non-Examiner personnel.

Responses to essay and fill-in questions shall be evaluated by the Responsible Level 3 or Examiner to verify the candidate's adequate understanding of the subject matter. In no case can an examination be administered by oneself or by a subordinate.

When an outside agency is used to administer examinations, the employer shall ensure that all individuals involved in the administration of the examinations meet the requirements of this document. In all cases, the ultimate responsibility for compliance to this document shall remain with the employer.

The candidate for certification shall achieve a minimum score of 70 % on each individual examination. In addition, the candidate shall detect all discontinuities, flaws or conditions specified by the Level 3 during the practical examination and achieve a minimum score of 70 %.

The candidate shall have an average score of no less than 80 % in order to be eligible for certification. All examination scores shall be of equal weight in determining the average score. For example, if only specific and practical examinations are administered for recertification, only those scores shall be factored into the average score. If a general examination is also given for recertification, the general score shall also be factored into the average score.

Scores for ASNT, NANDTB, or ISO 9712 NDT certificates scored as “pass/fail” and used in lieu of the general examination per 7.1.3 shall be assigned a value of 80 %. For Level 3 personnel recertified using Annex A, a notation in the certification record shall be applied and a score value need not be assigned. If a hands-on practical is administered in conjunction with Annex A, then a minimum passing score of 80 % is required for the practical examination.

Candidates failing any general, specific or practical examination shall receive additional training as determined and documented by the Responsible Level 3 or Examiner before attempting re-examination of the failed exam. The additional training shall be documented and shall address those areas found deficient in the candidate's skills or knowledge.

The re-examination shall not use the same written tests or test samples that were used in the failed examination. The re-examination test shall contain a minimum of 25 % new questions. A current certification shall be suspended if an individual fails an examination for recertification.

Re-examination shall be taken within a timeframe specified in the written practice but shall be no longer than 12 months. The maximum number of re-examinations shall be specified in the written practice.

Personnel who have demonstrated that they possess the appropriate qualifications are eligible for certification by their employer in accordance with the employer's written practice. Certification is not required for trainees, instructors, NDT auditors, or personnel performing specialized inspections using direct readout instruments.

Partially or fully automated equipment, requires a Level 3 person certified in the test method to consider each part of the inspection processes and establish whether specific NDT knowledge and skills are required to correctly carry them out. Certification to this document, at the appropriate level, is required for the tasks determined to require specific NDT knowledge and skills.

The employer shall maintain personnel certification records as long as the certification is in effect. The records maintained by the employer shall include, as a minimum:

a) name of the certified individual;

b) level, method, and/or technique as applicable, for which individual is certified;

c) the latest written and practical examinations and the scores from the immediately previous exams;

d) when Annex A is used, documentation of credit points used for Level 3 recertification. Last written and practical examinations need not be maintained;

e) when Annex D is used, documentation of accrued points used for Level 3 certification;

f) date and expiration of current certification(s). Suspended or revoked certification(s) shall be documented for reason and date. If applicable, date and action to reinstate certification(s) shall also be documented;

g) NDT training history that identifies the source, type of training, dates of training and course hours, and, if applicable, the documentation required by 6.1.3 and 6.1.4;

h) NDT experience history, including any previous certifications, both with current and previous employers sufficient to justify satisfaction of experience requirements for qualification, and, if applicable, the documentation required by 6.3.2 and 6.3.3;

i) results of the most-recent (i.e. current) visual acuity and colour perception examinations;

j) extent and documentation of formal education when used to meet qualification requirements;

k) the name and signature of the employer’s representative authorizing the certification;

l) results of most recent annual proficiency review.

All training, qualification, and certification records shall be maintained in accordance with the employer’s written practice and shall be made available for audit. When an NANDTB is used, see Annex C. All such records, except for actual examinations, shall be made available to the applicable employee upon request or upon leaving the company for any reason.

Certifications shall expire when the certification interval has lapsed with no recertification issued. Certification, annual proficiency review, and vision examinations are considered to expire at the end of the corresponding month in which the event began.

Certification shall be suspended when:

— vision examination is expired;

— individual does not perform in the method certified for at least 12 consecutive months;

— individual fails recertification examination;

— individual's performance is found to be deficient in any manner;

— annual proficiency review is expired.

Certification shall be revoked when the individual does not perform in the certified method for the employer for at least 24 consecutive months, when employment has been terminated, or when the individual’s conduct is found to be technically incompetent. When an individual is re-hired by the same employer within 24 months, certification may be considered as suspended. All certifications shall be revoked when the individual’s conduct is found to be unethical.

Certifications shall be reinstated only if the following requirements have been met:

— certifications that have been suspended shall be reinstated up to the original certification date when the cause for the suspension has been corrected and the correction verified by the employer after confirmation from the Responsible Level 3, and the individual’s proficiency is verified by the Responsible Level 3 or Examiner.

— certifications that have expired shall only be reinstated by specific and practical examination.

— certifications that have been revoked shall only be reinstated by general, specific, and practical examination, and when the cause for the revocation has been corrected and the correction verified by the employer after confirmation from the Responsible Level 3, and the individual’s proficiency is verified by the Responsible Level 3 or Examiner.

Current NANDTB qualifications may be utilized for new employment provided that the new employer administers additional examinations that are representative of their processes and product as determined by the Responsible Level 3. The expiration date of certification shall be from the original certification date.

Level 1 and 2 personnel certified to this document shall be recertified at intervals not to exceed five years. Recertification shall be accomplished by successful completion of practical and specific examinations.

Level 3 personnel certified to this document shall be recertified at intervals not to exceed five years. Recertification shall be accomplished in accordance with Annex A or by successful completion of specific and practical examinations.

If accepting products is required as a part of the duties of Level 3, an additional hands-on practical examination equivalent to Level 2 is required.

The employer shall develop and implement a documented annual process to verify technical proficiency for each method during the certification cycle for all levels of personnel processing or inspecting products.

1. 
   (normative)
   
   Credit system for recertification of Level 3 NDT personnel
   1. Scope

This annex specifies the requirements for recertification of Level 3 NDT personnel using the credit system. It applies only to those persons holding a valid Level 3 NDT certification at the time of recertification.

• 1. Requirements

Documentation for recertification shall be submitted to the Responsible Level 3 or NANDTB at least 14 days prior to the expiration date of the certification. Application for recertification of the Responsible Level 3 shall be made directly to the applicable regulatory agency, NANDTB, or employer for review by a designated Level 3.

The candidate shall have been employed in a Level 3 function for a minimum of 36 months (at least 12 of which are in the last 24 months) within the previous five years in the method(s) for which recertification is sought. The number of months is cumulative and does not need to be consecutive months for validation purposes.

Continuity in the method shall be demonstrated. The candidate shall provide a list of 8 verifiable Level 3 tasks in each NDT method for which recertification is sought during the five-year period.

Candidates shall provide objective evidence that they have kept up to date with current NDT technology in the method(s) for which they are seeking recertification by obtaining a minimum of 24 points during the five-year period of certification, irrespective of the number of certifications (methods) obtained, by engaging in a combination of activities listed in Table A.1.

The approval of Annex A activity documentation shall be determined and documented by the Responsible Level 3 or NANDTB as defined within the employer’s written practice. Annex A recertification for the Responsible Level 3 shall be determined and documented by the employer. A single event shall only be used for one award credit activity during a five-year period.

Table A.1 — Awarded credit activities for recertification of Level 3 NDT personnel

1. 
   (normative)
   
   Qualification and certification of Level 1-limited
   1. Scope

This Annex specifies the requirements for qualification and certification of Level 1-Limited NDT personnel in addition to all specified requirements within this document. Annex B only applies when authorized by the cognizant engineering organization and the employer’s written practice.

• 1. Requirements
     1. General

When authorized by the cognizant engineering organization and the employer’s written practice, the performance of a specific NDT test on a specified part, feature, or assembly may be performed by personnel certified to Level 1-Limited. Each use of Level 1-Limited is a separate certification and shall be approved by the cognizant engineering organization. An individual shall not possess more than three Level 1-Limited certifications at any given time. The following shall be documented and be made available for review by the employer’s customers and regulatory agencies:

— the case-by-case justification for using Level 1-Limited;

— the cognizant engineering organization approval;

— the training and experience hours and the number of examination questions;

— the specific NDT test to be performed;

— the specific products to be tested;

— the authority to accept or reject products, if applicable.

• • 1. Level 1-Limited certification

Level 1-Limited is a limited certification allowing only the performance of a specific NDT test on a specified part, part feature, or assembly. In the test technique and method in which certified, Level 1-Limited personnel shall:

— be able to follow work instructions;

— receive guidance or supervision from a certified Level 2 or Level 3 in the method when necessary;

— have the skills and knowledge to process parts, document results and perform equipment standardization in accordance with approved work instructions;

— have the skills and knowledge to carry out any necessary preparation of parts before or after testing in accordance with approved work instructions;

— when specified in the written practice and when the cognizant engineering organization allows, have the skills and knowledge to evaluate test results and perform acceptance or rejection of a specific part, part feature, or assembly in accordance with approved work instructions, and within the limitations documented by the Responsible Level 3.

• • 1. Level 1-Limited training

The minimum training hours for Level 1-Limited shall be determined and documented by the Responsible Level 3, but shall not be less than 25 % of those required for Level 1 in the applicable method.

• • 1. Level 1-Limited experience

Experience requirements for Level 1-Limited shall be determined and documented by the Responsible Level 3, but shall not be less than 10 % of those required for Level 1 in the applicable method.

• • 1. Level 1-Limited examinations
       1. Types of examinations

Examinations shall consist of a general, specific, practical, and visual acuity in accordance with this document. The following Annex B allowances for Level 1-limited are provided:

• • • 1. General examination

A minimum of 10 questions shall be administered for the general examination for Level 1-Limited.

• • • 1. Specific examination

A minimum of 8 questions shall be administered for the specific examination for Level 1-Limited.

• • • 1. Practical Examination

The Level 1-Limited candidate shall demonstrate proficiency by using a work instruction to process at least one test sample for each technique and part configuration for which certification is sought. The test sample(s) shall meet the definition in this document and be representative of the specific product to be encountered by the candidate in the performance of their duties with the employer. If approval to accept or reject products is to be granted by the Responsible Level 3, the candidate shall interpret and document the results of the inspection of the test sample(s). The checklist shall include proficiency in the use and standardization of equipment and materials, adherence to procedural details and, if applicable proficiency in the interpretation and evaluation of indications.

• • 1. Records

For Level 1-Limited certifications, the following records shall be maintained by the employer as long as the certification is in effect:

— name of the certified individual;

— the latest written and practical examinations and the scores from the immediately previous exams;

— date and expiration of current certification(s). Suspended or revoked certification(s) shall be documented for reason and date. If applicable, date and action to reinstate certification(s) shall also be documented;

— training and experience hours;

— case-by-case justification and the cognizant engineering organization’s approval;

— length of the certification (up to 2 years);

— specific NDT test to be performed;

— specific products to be tested, and, if applicable, the approval to accept or reject products;

— results of the most-recent (i.e. current) visual acuity and colour perception examinations;

— the name and signature of the employer’s representative authorizing the certification;

— results of most recent annual proficiency review.

• • 1. Recertification

Level 1-Limited personnel shall be recertified for each certification held at intervals not to exceed two years by successful completion of practical and specific examinations.

1. 
   (normative)
   
   National Aerospace Non-Destructive Testing Boards (NANDTB)
   1. Scope

This annex specifies the requirements for qualification of NDT personnel under the general control of a National Aerospace Non-destructive Testing Board (NANDTB) in accordance with this document.

• 1. Requirements

A NANDTB is an independent national aerospace organization representing a nation’s aerospace industry that is chartered by its prime contractors and is recognized by the nation’s Regulatory Agency to provide or support NDT qualification services in accordance with this document. Each NANDTB shall be recognized formally in writing by the nation’s Regulatory Agencies.

Each NANDTB shall define, organize, administer and manage activities in accordance with this document.

Each NANDTB shall have a written constitution, deciding entity and be governed according to administrative and working procedures and shall issue a statute or similar document containing:

— the constitution, terms of reference and methods of working of the Board;

— the aims and objectives of the Board;

— rules of procedure for voting and agreeing resolutions;

— the criteria to be met by member organizations;

— the procedure for applying for membership and election of member organizations, together with rules regarding termination of membership;

— the names and status of the organizations presently in membership of the Board;

— duties, responsibilities and tenure of appointed officers (e.g. chairman, secretary, convener of working groups);

— the method(s) by which the NANDTB controls qualification examinations administered by internal and external examination bodies;

— examination body criteria, including the audit and approval process;

— guidance to examination bodies under its control on the content of certificates issued for training and examinations;

— policy on recognition of examination body approvals issued under the control of other national boards.

As a minimum, the voting members in the deciding entity shall be Level 3 personnel from design, production and / or maintenance organizations that are approved by the nation’s regulatory agency. Other members may be co-opted as voting or non-voting members as necessary to support the activities of the NANDTB.

Regulatory agencies for civilian and/or defence have the right to be included as observer members of the NANDTB.

Each NANDTB shall disclose on a public forum, e.g. on a website:

— written constitution and terms of reference of the Board;

— confirmation of recognition by the regulatory agency;

— a list of NANDTB Members (Company and relevant representatives);

— a list of approved training and examination bodies (in the national and English language);

— a list of procedures published by the Board, with information on how these may be accessed;

— minimum content required for qualification certificates (in the national and English language).

Applicable NANDTB procedures shall be available for review / audit by the employer’s customers and regulatory agencies.

The employer’s Responsible Level 3 may use an NANDTB to:

— develop training outlines and training material;

— create examination questions and administer examinations;

— approve outside and/or internal organizations providing training and/or examination services;

— define requirements for qualification of NDT personnel in emerging methods;

— retain written and practical examinations;

— designate Examiners and/or instructors at outside or internal organizations providing training and examination services;

— evaluate that the clients’ requirements are fully specified, recorded, and understood by the examination body.

Where an NANDTB is used to provide such services, it shall develop processes and procedures that shall ensure full compliance with the requirements of this document. The activities, processes, procedures etc. undertaken/developed by an NANDTB shall be made available for review / audit by prime contractors and regulatory agencies. For countries where no NANDTB exists, the services of other NANDTB’s may be used, but are not required to do so unless specified by local or regulatory requirements.

If an NANDTB is used to provide training and/or examinations, it shall be treated as an outside agency and the employer’s Responsible Level 3 shall verify that the training and/or examinations meet the employer’s requirements.

Where an NANDTB is used, the specific and practical examinations may cover a wider scope that does not include all the employer’s requirements. Where a wider scope is used by the NANDTB the employer is responsible for administering supplemental specific and practical examinations which are representative of the employer’s processes. These supplemental examinations shall be under the control of an employer or NANDTB when required by the National Aviation Authority.

For emerging NDT methods, where the applicable NANDTB has a process for qualification in a new NDT method this process shall be used.

• 1. Examinations

The control and administration of NDT exams at examination bodies shall be subject to audit either by an NANDTB or by an organization (e.g. NDT society) which is overseen by the NANDTB. This audit shall be conducted by auditors who comply with this document and shall include:

— review of quality documentation covering the examination of aerospace NDT personnel meeting the requirements of the approval criteria;

— examination bodies quality system documents and procedures;

— availability of codes, standards and specifications as relevant, including if needed, the employer’s written practice;

— for external bodies, assurance that a contract review took place;

— appointment of appropriately qualified and experienced examination staff;

— confidentiality, impartiality and security;

— compilation of written specific and practical examinations appropriate to scope (relevant to products, NDT procedures and processes);

— examination marking and grading in accordance with this document.

Outside Agencies under the control of a NANDTB may be recognized by formal approval of NANDTBs and/or organizations in other countries where the controlling NANDTB complies with the minimum requirements of this document and is a member of the Aerospace NDT Board Forum.

• 1. Record retention

When an NANDTB is used, the scores for the latest written and practical examinations shall be kept by the employer but actual examinations may be kept by the NANDTB. All such records, except for actual examinations, shall be made available to the applicable employee upon request or upon leaving the company for any reason.

1. 
   (normative)
   
   Credit system for initial certification to Level 3
   1. Scope

This annex specifies the requirements for initial certification to Level 3 using a competency-based credit system, in lieu of meeting experience requirements per Table 5. It applies only to those persons holding a valid Level 2 NDT certification in the applicable method, and it applies only for initial certification to Level 3 in the method. Recertification utilizing points will still be in accordance with Annex A. Use of this annex does not exempt candidates from Examination per Clause 7 of this document.

• 1. Requirements

To qualify for a method Level 3 eligibility according to Table D.1, the candidate shall accrue 36 cumulative points as a Level 2 in the method, with 20 of those points being in the minimum points activities as listed.

Candidates shall log all relevant Level 3 tasks and accrue the minimum of 36 points by engaging in a combination of activities listed in Table D.1. All or a portion of verifiable previous points may be accepted as applicable.

Tasks should be typical of those to be accomplished in the performance of the candidate’s duties.

Any task being performed by the candidate to accrue points in Annex D - L3 Competency Matrix shall be supervised and approved as required by the RL3.

Table D.1 lists the allowable minimum and maximum points to be accrued in each of the competence categories, and the point allocation for activities in those categories. A single event shall only be used for one credit-awarding activity and cannot be applied to multiple activities.

The approval of Annex D documentation shall be determined and documented by the Responsible Level 3 or NANDTB, as defined within the employer's written practice.

When Annex D is used for a Level 2 to become eligible for Level 3 certification, a time minimum of one (1) year will be used to attain candidacy for any Level 3 certification, regardless of method.

Table D.1 — Awarded credit activities for initial certification to Level 3