SIST EN 4179:2022

SLOVENSKI STANDARD
SIST EN 4179:2022
01-februar-2022
Nadomešča:
SIST EN 4179:2017
Aeronavtika - Usposobljenost in odobritev osebja za neporušitveno preskušanje
Aerospace series - Qualification and approval of personnel for non-destructive testing
Luft- und Raumfahrt - Qualifizierung und Zulassung des Personals für zerstörungsfreie
Prüfungen
Série aérospatiale - Qualification et agrément du personnel pour les essais non
destructifs
Ta slovenski standard je istoveten z: EN 4179:2021
ICS:
03.100.30 Vodenje ljudi Management of human
resources
19.100 Neporušitveno preskušanje Non-destructive testing
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
SIST EN 4179:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 4179:2022

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SIST EN 4179:2022


EN 4179
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2021
EUROPÄISCHE NORM
ICS 03.100.30; 19.100; 49.020 Supersedes EN 4179:2017
English Version

Aerospace series - Qualification and approval of personnel
for non-destructive testing
Série aérospatiale - Qualification et agrément du Luft- und Raumfahrt - Qualifizierung und Zulassung
personnel pour les essais non destructifs des Personals für zerstörungsfreie Prüfungen
This European Standard was approved by CEN on 11 July 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4179:2021 E
worldwide for CEN national Members.

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SIST EN 4179:2022
EN 4179:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
Annex A (normative) Credit system for recertification of Level 3 NDT personnel . 28
A.1 Scope . 28
A.2 Requirements . 28
A.3 Definitions . 29
Annex B (normative) Qualification and certification of Level 1-Limited. 31
B.1 Scope . 31
B.2 Requirements . 31
Annex C (normative) National aerospace non-destructive testing boards (NANDTB) . 34
C.1 Scope . 34
C.2 Requirements . 34
C.3 Examinations . 36
C.4 Record retention . 36
Bibliography . 37

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SIST EN 4179:2022
EN 4179:2021 (E)
European foreword
This document (EN 4179:2021) has been prepared by the Aerospace and Defence Industries
Association of Europe — Standardization (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 European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2022, and conflicting national standards shall be
withdrawn at the latest by June 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN 4179:2017.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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SIST EN 4179:2022
EN 4179:2021 (E)
Introduction
In the event of a conflict between the text of this document and the references cited herein, the
requirements of this document take precedence. Nothing in this document supersedes applicable laws
and regulations unless a specific exemption has been obtained.
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SIST EN 4179:2022
EN 4179:2021 (E)
1 Scope
1.1 Purpose
This document establishes the minimum requirements for the qualification and certification of
personnel performing non-destructive testing (NDT), non-destructive inspection (NDI), or non-
destructive 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
meets 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.
1.2 Applicability
1.2.1 General
This document applies to personnel using NDT methods to test and/or accept materials, products,
components, assemblies or sub-assemblies. This document also applies to personnel: directly
responsible for the technical adequacy of the NDT methods used, who approve NDT procedures and/or
work instructions, who audit NDT facilities, or who 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.
Personnel performing specialized inspections using certain direct readout instruments as determined
by a Level 3 person certified in the test method, do not require qualification or certification to this
document.
1.2.2 Implementation
This document addresses the use of a National Aerospace NDT Board (NANDTB). NANDTBs are only
used as specified according to Annex C and it is not mandatory to have such a board for compliance with
this document. Personnel certified to previous revisions of NAS 410 or EN 4179 need not recertify to
the requirements of this document until their current certification expires.
1.3 Test Methods
1.3.1 Common test methods
This document contains detailed requirements for the following common NDT methods:
Eddy Current Testing (ET)
Magnetic Particle Testing (MT)
Penetrant Testing (PT)
Radiographic Testing (RT)
Thermographic Testing (TT)
Ultrasonic Testing (UT)
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SIST EN 4179:2022
EN 4179:2021 (E)
1.3.2 Other test 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, assembly or sub-
assembly. Such test methods can include, but are not limited to, acoustic emission testing (AT), neutron
radiography, leak testing, holography, and shearography. The requirements for personnel training,
experience, and examination for these other test methods are established in accordance with 6.4 and
are documented by the employer.
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.
1
ISO 18490, 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.
ISO and IEC maintain terminological 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
basic examination
examination utilized to verify a Level 3 candidate’s knowledge of NDT methods used by the employer at
a Level 2 proficiency
3.2
certification
written statement by an employer that an individual has met the applicable requirements of this
document
3.3
closed book examination
examination administered without access to any reference materials
3.4
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
3.5
committee meetings
panel meetings
meetings, conferences, symposia, seminars, trade association meetings, panels, organized or sponsored
by a regional, national or international NDT organization or technical society

1
Published by: ISO International Organization for Standardization http://www.iso.ch/.
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EN 4179:2021 (E)
Note 1 to entry: Foreign or international meetings qualify if the sponsor(s) are national or international.
3.6
committee projects
specific identifiable official activities of regional or national technical societies, committees or work
groups
EXAMPLE round robins or individual studies, preparation of guidelines, appendices, specifications,
recommended practices, procedures, codes or standards.
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.
3.7
direct observation
observer's viewing of the NDT process in a manner that permits uninterrupted, visual and verbal two-
way contact with the trainee
3.8
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 analog display, such as a scale/pointer
configuration, and do not require special skills or knowledge to set up the instrument and do not
involve adjusting signal displays such as gates, delays, gain, or phase to obtain measurements
EXAMPLE Common direct readout instruments include basic ultrasonic thickness gauges without an
oscilloscope display, and eddy current coating thickness gauges.
3.9
documented
condition of being recorded in written or electronic form
3.10
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.
3.11
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
3.12
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
3.13
examiner
Level 3 person certified to this document and designated by the Responsible Level 3 person to
administer all or part of the qualification process in the NDT method(s) in which the Examiner is
certified
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EN 4179:2021 (E)
3.14
experience
actual performance of an NDT method conducted in the work environment 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.
3.15
formal education
engineering or science studies at a technical school, college, or university
3.16
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 Person or Examiner.
3.17
general examination
written examination addressing the basic principles and theory of an NDT method
3.18
indication
response or evidence of a condition resulting from an NDT inspection that requires interpretation
3.19
instructor
individual designated or approved by the Responsible Level 3 person or Examiner to provide training
for NDT personnel
3.20
interpretation
determination of whether indications are relevant or non-relevant
3.21
test method
1 (one) of the disciplines of non-destructive testing (e.g. ultrasonic testing, radiographic testing) within
which different test techniques may exist
3.22
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
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SIST EN 4179:2022
EN 4179:2021 (E)
3.23
non-film radiography
radiographic imaging that does not use a film-based recording medium
Note 1 to entry: Non-Film radiography includes, but may not be limited to, Computed Radiography, Digital
Radiography, Radioscopy, and Computed Tomography.
3.24
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
3.25
open book examination
examination administered with access to specific reference material that is provided with or referenced
in the examination
3.26
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.
3.27
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.
3.28
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, but a checklist shall be used, and observations and
results shall be documented.
3.29
prime contractor
organization having overall responsibility for design, control and delivery of a system, component or
product
3.30
procedure
written general “how to” instruction for conducting a given process
Note 1 to entry: Procedures are then used to develop work instructions, as defined in 3.38.
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SIST EN 4179:2022
EN 4179:2021 (E)
3.31
qualification
skills, training, knowledge, examinations, experience and visual capability required for personnel to
properly perform to a particular level
3.32
responsible Level 3 person
Level 3 person designated by the employer with the responsibility and authority to ensure that the
requirements of this document are met and to act on behalf of the employer
3.33
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
3.34
sub-contractor
organization responsible to the prime contractor for the manufacture or maintenance of aerospace
products
Note 1 to entry: For the purposes of this document, this includes suppliers and processors.
3.35
task
activity for which Level 3 certification is required, e.g. approval of an NDT Technique Instruction or
NDT procedure
3.36
test technique
category within a test method as defined in the written practice by the employer
3.37
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.
Note 1 to entry: Test samples can refer to actual hardware, fabricated test parts, or, when applicable, images of
actual hardware such as radiographs.
3.38
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. “aluminium extrusions” or “steel brackets”), or assembly
Note 1 to entry: These are sometimes referred to in the industry as “test technique sheets” or “data cards”. Such
work instructions are based on procedures defined in 3.30.
3.39
written
retrievable electronic or hard copy
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SIST EN 4179:2022
EN 4179:2021 (E)
3.40
written practice
document that describes an employer’s requirements and methodology for controlling and
administering the NDT personnel qualification and certification process
4 General requirements
4.1 Written practice
4.1.1 Qualification and certification
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:
a) The levels of qualification and certification used by the employer;
b) Personnel duties and responsibilities;
c) Training and experience requirements;
d) Certification and recertification requirements;
e) Records and record keeping requirements;
f) Requirements for expiration, suspension, revocation and reinstatement of certifications;
g) Process for annual proficiency review.
The written practice shall be approved by the Responsible Level 3 person. The written practice shall be
available for review by the employer’s customer(s) and regulatory agencies.
4.1.2 Additional requirements
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.
4.1.3 NDT techniques
The written practice shall include the specific test technique(s) within each test method and the actions
to be taken concerning additional training and experience, as well as the written and practical testing,
when additional test techniques are introduced for a currently certified individual.
4.1.4 Training outlines
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 person shall verify that the training
meets the employer's requirements.
4.1.5 Examination practices
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, and the specific
visual acuity examination method to be used. If required, the use of a general examination for
recertification shall be documented in the written practice.
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SIST EN 4179:2022
EN 4179:2021 (E)
4.1.6 Administration
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.
4.1.7 Records
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.
4.2 Test Methods
For the common test methods listed in 1.3.1, the minimum requirements for training, experience and
examination are detailed in Clause 6 and Clause 7. These requirements shall serve as a guideline for
other current or emerging test methods as defined in 1.3.2.
4.3 Responsibility
4.3.1 General
a) The employer is responsible for the implementation of, and compliance with, this document and for
certifying qualified personnel.
b) In addition, the prime contractor shall be responsible for compliance to this document by their sub-
contractors.
c) Employers using outside agencies shall be responsible for assuring that the appropriate
requirements of this document are met.
d) The employer is solely responsible for the certification of its employees and cannot certify for
another employer.
e) Individuals cannot qualify themselves.
f) 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.
4.3.2 Responsible Level 3 person
a) The employer shall identify in writing a “Responsible Level 3 person” to act on its behalf in matters
regarding the NDT qualification and certification process.
b) The Responsible Level 3 person shall be certified in accordance with this document as a Level 3
person in one or more NDT methods and shall have a thorough knowledge of the written
instructions, codes, specifications and standards used by the employer.
c) The Responsible Level 3 person shall also have a thorough knowledge of the materials,
components, product technologies, NDT methods and NDT techniques used by the employer.
d) Additional Examiners as defined in this document may be identified and delegated in writing as
necessary to provide coverage for all test methods used by the employer.
e) The Responsible Level 3 person may be an outside agency but in this case he/she can only qualify
personnel, as only the employer can certify personnel.
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SIST EN 4179:2022
EN 4179:2021 (E)
f) The Responsible Level 3 person shall be responsible for implementation of this document and the
overall administration of the qualification and certification program.
4.3.3 Outside agency
a) An employer may use a Level 3 person certified in accordance with this document from an outside
agency to develop a certification program, act as the Responsible Level 3 person, examine NDT
personnel or perform any other qualification or Level 3 function.
b) An outside agency may qualify, but not certify personnel.
c) 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).
5 Qualification and certification levels
5.1 Levels of qualification and certification
5.1.1 General
a) The 4 (four) basic levels of certification are
• Level 1-Limited,
• Level 1,
• Level 2 and
• Level 3.
b) The employer may subdivide, add or limit levels as appropriate, but cannot eliminate or reduce the
minimum requirements for each level.
c) 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.
d) Where other variations or subdivisions are implemented, the requirements and responsibilities
shall also be detailed in the employer’s written practice.
e) NDT personnel shall not independently perform the functions listed in 5.1.3, 5.1.4, 5.1.5 and 5.1.6 if
not certified to the appropriate level in the applicable test technique/test method.
5.1.2 Trainee
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, Level 1-Limited or directly to Level 2 shall be
considered a trainee. In the test technique/test method in which they are preparing for certification,
trainees shall:
a) 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;
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SIST EN 4179:2022
EN 4179:2021 (E)
b) obtain experience under the direct observation of a Level 2 or Level 3 person in the same test
method;
c) obtain experience under the direct observation of a Level 1 person or instructor only when
approved by the responsible Level 3 person;
d) not make accept or reject decisions;
e) not independently conduct tests;
f) not independently perform any other NDT function.
5.1.3 Level 1-Limited
Annex B defines the requirements for Level 1-Limited.
5.1.4 Level 1
In the test method in which certified, Level 1 persons shall:
a) be able to follow work instructions;
b) have the skills and knowledge to process parts, document results and perform equipment
standardization in accordance with approved work instructions;
c) have the skills and knowledge to carry out any necessary preparation of parts before or after
testing in accordance with approved work instructions;
d) have the skills and knowledge to conduct system performance checks in accordance with the
applicable process standard;
e) receive guidance or supervision from a certified Level 2 or Level 3 person in that test method when
necessary;
f) when specified in the written practice and approved by the Responsible Level 3 person, Level 1
persons may perform interpretations and evaluations of specific product(s) or product form(s) for
acceptance or rejection in accordance with approved work instructions.
5.1.5 Level 2
In the test method in which certified, Level 2 persons shall:
a) have the skills and knowledge to set up and standardize equipment, process parts, interpret and
evaluate for acceptance or rejection, and document results;
b) be thoroughly familiar with the scope and limitations of the test technique/test method;
c) have the skills and knowledge to conduct system performance checks in accordance with the
applicable process standard;
d) be capable of providing the necessary guidance and/or supervision to trainees
...

S L O V E N S K I SIST EN 4179


S T A N D A R D   februar 2022









Aeronavtika – Kvalificiranje in odobritev osebja za neporušitvene preiskave

Aerospace series – Qualification and approval of personnel for non-destructive
testing

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

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

























Referenčna oznaka
ICS 03.100.30; 19.100; 49.020 SIST EN 4179:2022 (sl)

Nadaljevanje na straneh II in od 1 do 38

2022-07. Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno.

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SIST EN 4179 : 2022

NACIONALNI UVOD

Standard SIST EN 4179 (sl), Aeronavtika – Kvalificiranje in odobritev osebja za neporušitvene
preiskave, 2022, ima status slovenskega standarda in je enakovreden evropskemu standardu EN 4179
(en), Aerospace series – Qualification and approval of personnel for non-destructive testing, 2021.

Ta standard nadomešča SIST EN 4179:2017.

NACIONALNI PREDGOVOR

Evropski standard EN 4179:2021 je pripravilo tehnično delovno telo ASD-STAN – Aerospace.

Slovenski standard SIST EN 4179:2022 je prevod evropskega standarda EN 4179:2021. V primeru
spora glede besedila slovenskega prevoda v tem standardu je odločilen izvirni evropski standard v
angleškem jeziku. Slovensko izdajo standarda je potrdil Strokovni svet SIST za splošno področje.

Odločitev za izdajo tega standarda je 7. januarja 2022 sprejel Strokovni svet SIST za splošno področje.

ZVEZA S STANDARDI

S privzemom tega evropskega standarda veljajo za omejeni namen referenčnih standardov vsi
standardi, navedeni v izvirniku, razen standarda, ki je že sprejet v nacionalno standardizacijo:

SIST EN ISO 18490 (en) Neporušitvene preiskave – Vrednotenje ostrine vida za osebje, ki izvaja
neporušitvene preskave (NDT) (ISO 18490)

OSNOVA ZA IZDAJO STANDARDA

– privzem standarda EN 4179:2021

PREDHODNA IZDAJA

– SIST EN 4179:2017, Aeronavtika – Kvalificiranje in odobritev osebja za neporušitvene preiskave

OPOMBE

– Povsod, kjer se v besedilu standarda uporablja izraz "evropski standard", v SIST EN 4179:2022 to
pomeni "slovenski standard".

– Nacionalni uvod in nacionalni predgovor nista sestavni del standarda.

– Ta nacionalni dokument je istoveten EN 4179:2021 in je objavljen z dovoljenjem

CEN-CENELEC
Upravni center
Rue de la Science 23
B-1040 Bruselj

This national document is identical with EN 4179:2021 and is published with the permission of

CEN-CENELEC
Management Centre
Rue de la Science 23
B-1040 Brussels


II

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EVROPSKI STANDARD                EN 4179
EUROPEAN STANDARD

NORME EUROPÉENNE
 december 2021
EUROPÄISCHE NORM

ICS 03.100.30; 19.100; 49.020






Slovenska izdaja

Aeronavtika – Kvalificiranje in odobritev osebja za neporušitvene
preiskave

Aerospace series – Qualification Série aérospatiale – Luft- und Raumfahrt –
and approval of personnel for Qualification et agrément du Qualifizierung und Zulassung
non-destructive testing personnel pour les essais non des Personals für
destructifs zerstörungsfreie Prüfungen





Ta evropski standard je CEN sprejel 11. julija 2021.

Člani CEN morajo izpolnjevati notranje predpise CEN/CENELEC, ki določajo pogoje, pod katerimi dobi
ta evropski standard status nacionalnega standarda brez kakršnihkoli sprememb. Sezname najnovejših
izdaj teh nacionalnih standardov in njihove bibliografske podatke je mogoče na zahtevo dobiti pri
Upravnem centru CEN-CENELEC ali pri članih CEN.

Ta evropski standard obstaja v treh uradnih izdajah (angleški, francoski in nemški). Izdaje v drugih
jezikih, ki jih člani CEN na lastno odgovornost prevedejo in izdajo ter priglasijo pri Upravnem centru
CEN-CENELEC, veljajo kot uradne izdaje.

Člani CEN so nacionalni organi za standarde Avstrije, Belgije, Bolgarije, Cipra, Češke republike,
Danske, Estonije, Finske, Francije, Grčije, Hrvaške, Irske, Islandije, Italije, Latvije, Litve, Luksemburga,
Madžarske, Malte, Nemčije, Nizozemske, Norveške, Poljske, Portugalske, Republike Severna
Makedonija, Romunije, Slovaške, Slovenije, Srbije, Španije, Švedske, Švice, Turčije in Združenega
kraljestva.










CEN
Evropski komite za standardizacijo
European committee for standardization
Comité européen de normalisation
Europäisches komitee für normung

Upravni center CEN-CENELEC: Rue de la Science 23, B-1040 Bruselj



© 2021 CEN Lastnice avtorskih pravic so vse države članice CEN. Ref. oznaka EN 4179:2021 E

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SIST EN 4179 : 2022

VSEBINA Stran

Evropski predgovor . 5
Uvod . 6
1 Področje uporabe . 7
1.1 Namen . 7
1.2 Uporaba . 7
1.2.1 Splošno . 7
1.2.2 Izvajanje . 7
1.3 Preskusne metode . 7
1.3.1 Splošne preskusne metode . 7
1.3.2 Druge preskusne metode . 8
2 Zveze s standardi . 8
3 Izrazi in definicije . 8
4 Splošne zahteve .12
4.1 Pisni postopek .12
4.1.1 Kvalifikacija in certificiranje .12
4.1.2 Dodatne zahteve .13
4.1.3 Tehnike neporušitvene preiskave .13
4.1.4 Načrti usposabljanja .13
4.1.5 Izpitni postopki .13
4.1.6 Izvajanje .13
4.1.7 Zapisi .13
4.2 Preskusne metode .13
4.3 Odgovornost .13
4.3.1 Splošno .13
4.3.2 Odgovorna oseba z opravljeno 3. stopnjo .14
4.3.3 Zunanja agencija .14
5 Stopnje kvalifikacije in certificiranja .14
5.1 Kvalifikacije in certificiranja – stopnje .14
5.1.1 Splošno .14
5.1.2 Pripravnik .15
5.1.3 1. stopnja – omejena .15
5.1.4 1. stopnja .15
5.1.5 2. stopnja .15
5.1.6 3. stopnja .16
5.1.7 Presojevalec .16
6 Usposabljanje in izkušnje .17
6.1 Usposabljanje .17
6.1.1 Splošno .17
6.1.2 Načrti usposabljanja .18
6.1.3 Predhodno usposabljanje .18
2

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6.1.4 Enakovredno usposabljanje .18
6.1.5 Usposabljanje o zdravju in varnosti .18
6.2 Osebje za usposabljanje in izvajanje izpitov .19
6.2.1 Odgovorna oseba z opravljeno 3. stopnjo .19
6.2.2 Ocenjevalci .19
6.2.3 Inštruktorji .19
6.2.4 Zunanje agencije .19
6.3 Izkušnje .19
6.3.1 Splošno .19
6.3.2 Predhodne izkušnje .20
6.3.3 Enakovredne izkušnje .20
6.4 Nove metode neporušitvene preiskave .21
6.4.1 Minimalno število ur .21
6.4.2 1 in 2. stopnja .21
6.4.3 3. stopnja .21
7 Izpiti .22
7.1 Namen .22
7.1.1 Splošno .22
7.1.2 Pregled vida .22
7.1.3 Splošni izpit .23
7.1.4 Specifični izpit .23
7.1.5 Praktični izpit .23
7.2 Izvajanje izpitov .25
7.2.1 Splošno .25
7.2.2 Ko izpite izvaja zunanja agencija .25
7.2.3 Točkovanje .25
7.2.4 Ponovno opravljanje izpitov .26
8 Certificiranje .26
8.1 Splošno .26
8.2 Zapisi .26
8.2.1 Minimalne zahteve .26
8.2.2 Razpoložljivost zapisov .27
8.3 Izguba certifikata .27
8.3.1 Potek .27
8.3.2 Začasni preklic .27
8.3.3 Odvzem .27
8.4 Obnovitev certifikata .27
8.5 Ponovno certificiranje .27
8.5.1 1. in 2. stopnja .27
8.5.2 3. stopnja .28
8.5.3 Praktični izpit .28
8.6 Letni pregled strokovnosti .28
3

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Dodatek A: Točkovalni sistem za ponovno certificiranje osebja za neporušitvene
preiskave z opravljeno 3. stopnjo .29
A.1 Področje uporabe .29
A.2 Zahteve .29
A.3 Definicije .29
Dodatek B (normativni): Kvalificiranje in certificiranje za 1. stopnjo – omejeno .32
B.1 Področje uporabe .32
B.2 Zahteve .32
Dodatek C (normativni): Nacionalni aeronavtični odbori za neporušitvene preiskave (NANDTB) .35
C.1 Področje uporabe .35
C.2 Zahteve .35
C.3 Izpiti .37
C.4 Ohranjanje zapisov .37
Literatura .38


4

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SIST EN 4179 : 2022

Evropski predgovor

Ta dokument (EN 4179:2021) je pripravila organizacija Aerospace and Defence Industries Association
of Europe – Standardization (ASD-STAN) (Evropsko združenje letalske, vesoljske in obrambne
industrije – Oddelek za standardizacijo (ASD-STAN)).

Po poizvedbah in glasovanjih, izvedenih v skladu s pravili tega združenja, so ta dokument odobrili
nacionalna združenja in uradni organi držav članic Evropskega združenja letalske, vesoljske in
obrambne industrije, preden je bil predstavljen CEN.

Ta evropski standard mora dobiti status nacionalnega standarda bodisi z objavo istovetnega besedila
ali z razglasitvijo najpozneje do junija 2022, nacionalne standarde, ki so v nasprotju s tem standardom,
pa je treba razveljaviti najpozneje do junija 2022.

Upoštevati je treba možnost, da so nekateri deli tega dokumenta lahko predmet patentnih pravic. CEN
[in/ali CENELEC] ne prevzema odgovornosti za opredelitev nekaterih ali vseh takih patentnih pravic.

Ta dokument nadomešča standard EN 4179:2017.

Po določilih notranjih predpisov CEN/CENELEC so ta evropski standard dolžne privzeti nacionalne
organizacije za standarde naslednjih držav: Avstrije, Belgije, Bolgarije, Cipra, Češke republike, Danske,
Estonije, Finske, Francije, Grčije, Hrvaške, Irske, Islandije, Italije, Latvije, Litve, Luksemburga,
Madžarske, Malte, Nemčije, Nizozemske, Norveške, Poljske, Portugalske, Republike Severna
Makedonija, Romunije, Slovaške, Slovenije, Srbije, Španije, Švedske, Švice, Turčije in Združenega
kraljestva.

Uporabnik naj vse povratne informacije ali vprašanja o tem dokumentu posreduje nacionalnemu organu
za standarde v svoji državi. Celoten seznam teh organov je na voljo na spletnem mestu CEN.


5

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Uvod

Če je besedilo tega dokumenta v nasprotju z v njem citiranimi sklicevanji, imajo prednost zahteve tega
dokumenta. Nič v tem dokumentu nima prednosti pred pristojnimi zakoni in predpisi, razen če je bila
pridobljena izjema.


6

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1 Področje uporabe

1.1 Namen

Ta dokument določa minimalne zahteve za kvalificiranje in certificiranje osebja, ki izvaja neporušitvene
preiskave (NDT), neporušitveno pregledovanje (NDI) ali neporušitveno vrednotenje (NDE) v letalski in
vesoljski proizvodnji, servisu, vzdrževanju in obnovi. V tem dokumentu je izraz neporušitvene preiskave
(NDT) uporabljen in obravnavan kot enakovreden neporušitvenemu pregledovanju in neporušitvenemu
vrednotenju (NDI in NDE).

V Evropi se izraz "odobritev" uporablja za pisno izjavo delodajalca, da posameznik izpolnjuje posebne
zahteve in ima operativno pooblastilo. Izraz "certifikat", kakor je opredeljen v točki 3.2, je v tem
dokumentu uporabljen kot nadomestek za izraz "odobritev". Razen če ni v pisnih postopkih določeno
drugače, certifikat v skladu s tem dokumentom vključuje tudi operativno pooblastilo.

1.2 Uporaba

1.2.1 Splošno

Ta dokument se uporablja za osebje, ki z metodami neporušitvenih preiskav preskuša in/ali odobrava
materiale, izdelke, komponente, sklope in podsklope. Ta dokument se uporablja tudi za osebje, ki je
neposredno odgovorno za tehnično primernost uporabljenih metod neporušitvenih preiskav, ki odobri
postopke neporušitvene preiskave in/ali navodila za delo, ki izvaja revizijo prostorov za neporušitvene
preiskave ali ki zagotavlja tehnično podporo oziroma usposabljanje za neporušitvene preiskave.

Ta dokument se ne uporablja za posameznike, ki imajo samo administrativno ali nadzorno pristojnost
nad osebjem, ki izvaja neporušitvene preiskave, ali za raziskovalno osebje, ki razvija tehnologijo za
neporušitvene preiskave za nadaljnjo uvedbo in za odobritev pri certificiranju na 3. stopnji.

Osebje, ki izvaja specializirane preglede z določenimi instrumenti za neposredne odčitke, kot jih je
določila oseba z opravljeno 3. stopnjo, certificirana za preskusno metodo, ne potrebuje kvalifikacij ali
certificiranja na podlagi tega dokumenta.

1.2.2 Izvajanje

Ta dokument naslavlja uporabo nacionalnega aeronavtičnega odbora za neporušitvene preiskave
(NANDTB). Nacionalni aeronavtični odbori za neporušitvene preiskave se uporabljajo samo, kot je
določeno v dodatku C, za skladnost s tem dokumentom pa tak odbor ni obvezen. Osebju, ki je
certificirano v skladu s prejšnjimi revizijami standarda NAS 410 ali EN 4179, se ni treba ponovno
certificirati v skladu z zahtevami tega dokumenta, dokler njihov trenutni certifikat ne poteče.

1.3 Preskusne metode

1.3.1 Splošne preskusne metode

Ta dokument vsebuje podrobne zahteve za naslednje splošne metode neporušitvenih preiskav:

preiskava z vrtinčnimi tokovi (ET)
preiskava z magnetnimi delci (MT)
preiskava s penetranti (PT)
radiografska preiskava (RT)
termografska preiskava (TT)
ultrazvočna preiskava (UT)


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1.3.2 Druge preskusne metode

Kadar se na ta dokument sklicuje organizacija za inženiring ali kakovost ali pristojna inženirska
organizacija ali se uporablja za zahteve glavnega pogodbenika, se dokument uporablja za druge
trenutne in nove metode neporušitvenih preiskav, ki se uporabljajo za določanje sprejemljivosti ali
primernosti materiala, dela, komponente, sklopa ali podsklopa za predvideno uporabo. Take preskusne
metode lahko vključujejo preskušanje akustične emisije (AT), nevtronsko radiografijo, preskušanje
tesnjenja, holografijo in merjenje z uporovnim merilnim lističem, vendar niso omejene na našteto.
Zahteve glede usposabljanja, izkušenj in izpitov osebja za te druge preskusne metode je treba določiti
v skladu s točko 6.4 in jih mora delodajalec dokumentirati.

2 Zveze s standardi

Standard se v besedilu sklicuje na naslednje dokumente tako, da njihov del ali celotna vsebina
predstavlja zahteve tega dokumenta. Pri datiranih sklicevanjih se uporablja samo navedena izdaja. Pri
nedatiranih sklicevanjih se uporablja zadnja izdaja citiranega dokumenta (vključno z morebitnimi
dopolnili).

ISO 18490 Neporušitvene preiskave – Vrednotenje ostrine vida za osebje, ki izvaja
1)
neporušitvene preiskave

3 Izrazi in definicije

V tem dokumentu se uporabljajo naslednji izrazi in definicije.

ISO in IEC hranita terminološke zbirke podatkov za uporabo pri standardizaciji na naslednjih naslovih:

– platforma za brskanje po spletu ISO: na voljo na spletnem mestu https://www.iso.org/obp

– IEC Electropedia: na voljo na spletnem mestu https://www.electropedia.org/

3.1
osnovni izpit
izpit za preverjanje znanja kandidata o metodah neporušitvenih preiskav na 3. stopnji, ki jih uporablja
delodajalec na 2. stopnji

3.2
certifikat
pisna izjava delodajalca, da je posameznik izpolnil ustrezne zahteve tega dokumenta

3.3
izpit brez pripomočkov
izpit, ki se opravlja brez dostopa do kakršnihkoli referenčnih gradiv

3.4
pristojna inženirska organizacija
organizacija za inženiring ali za neporušitvene preiskave glavnega pogodbenika, proizvajalca originalne
opreme (OEM) ali končnega uporabnika, pooblaščenega za sprejemanje odločitev, povezanih z
neporušitvenimi preiskavami, in za izdajanje odobritev, povezanih z neporušitvenimi preiskavami

3.5
srečanja odborov
srečanja svetov
srečanja, konference, simpoziji, seminarji, srečanja panožnih združenj, okrogle mize, ki jih organizira ali
financira regionalna, nacionalna ali mednarodna organizacija za neporušitvene preiskave oziroma
tehnično združenje


1)
 Izdala Mednarodna organizacija za standardizacijo (ISO), http://www.iso.ch/.
8

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OPOMBA 1: Tuja ali mednarodna srečanja izpolnjujejo pogoje, če so sponzorji nacionalni ali mednarodni.

3.6
projekti odborov
posebne določljive uradne dejavnosti regionalnih ali nacionalnih tehničnih združenj, odborov ali delovnih
skupin

PRIMER: Primerjalne ali individualne študije, priprava smernic, prilog, specifikacij, priporočenih praks, postopkov, kodeksov
ali standardov.

OPOMBA 1: Dokumentacija lahko zajema zapisnike ali poročila, osnutke izhodnih dokumentov odbora ali uradne pisne
komentarje, ki jih je kandidat oddal za take dokumente.

3.7
neposredno opazovanje
opazovalčevo spremljanje procesa neporušitvene preiskave na način, ki omogoča nemoten, vizualen in
verbalen dvosmerni stik s pripravnikom

3.8
instrument za neposredni odčitek
instrumenti, ki fizično prikazujejo meritve v dimenzijskih ali električnih enotah (npr. palcih, milimetrih ali
% IACS) v obliki digitalnega odčitka ali analognega prikaza, kot je konfiguracija skale/kazalca, in za
pridobitev meritev ne zahtevajo posebnih veščin ali znanja glede nastavitev instrumenta ter ne zajemajo
prilagajanja prikazov signala, kot so prehodi, zakasnitve, povečanje ali faza

PRIMER: Pogosti instrumenti za neposredni odčitek so na primer osnovni ultrazvočni merilniki debeline brez
osciloskopskega prikaza in merilniki debeline premaza ki delujejo z vrtinčnimi tokovi.

3.9
dokumentirano
pogoj beleženja v pisni ali elektronski obliki

3.10
delodajalec
organizacija, ki zaposluje ali pogodbeno najema storitve enega ali več posameznikov, ki izvajajo
neporušitvene preiskave

OPOMBA 1: V to definicijo so zajeti tudi samozaposleni posamezniki.

3.11
vrednotenje
pregled, ki sledi interpretaciji kazanj, zabeleženih med pregledom pri neporušitveni preiskavi, da se
ugotovi, ali kazanja ustrezajo podanim merilom sprejemljivosti, ali da se določi pomembnost kazanja

3.12
izpit
formalen, nadzorovan, dokumentiran preizkus znanja, izveden v skladu z dokumentiranim pisnim
postopkom za preverjanje kandidatove ostrine vida, veščin ali znanja o metodah neporušitvene
preiskave

3.13
ocenjevalec
oseba, ki je certificirana za 3. stopnjo po tem dokumentu in ki jo odgovorna oseba z opravljeno 3. stopnjo
določi za izvajanje celotnega ali dela postopka preverjanja usposobljenosti iz ene ali več metod
neporušitvenih preiskav, za katere je ocenjevalec certificiran

3.14
izkušnje
dejansko izvajanje metode neporušitvene preiskave, ki se opravlja v delovnem okolju, katerega rezultat
je pridobivanje znanja in veščin
9

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SLOVENSKI STANDARD
oSIST prEN 4179:2021
01-maj-2021
Aeronavtika - Usposobljenost in odobritev osebja za neporušitveno preskušanje
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
Ta slovenski standard je istoveten z: prEN 4179
ICS:
03.100.30 Vodenje ljudi Management of human
resources
19.100 Neporušitveno preskušanje Non-destructive testing
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
oSIST prEN 4179:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 4179:2021

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oSIST prEN 4179:2021


DRAFT
EUROPEAN STANDARD
prEN 4179
NORME EUROPÉENNE

EUROPÄISCHE NORM

March 2021
ICS 49.020; 03.100.30; 19.100 Will supersede EN 4179:2017
English Version

Aerospace series - Qualification and approval of personnel
for nondestructive testing
Série aérospatiale - Qualification et agrément du Luft- und Raumfahrt - Qualifizierung und Zulassung
personnel pour les essais non destructifs des Personals für zerstörungsfreie Prüfungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 4179:2021 E
worldwide for CEN national Members.

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oSIST prEN 4179:2021
prEN 4179:2021 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
1.1 Purpose . 7
1.2 Applicability . 7
1.2.1 Implementation . 7
1.3 Methods . 7
1.3.1 Common methods . 7
1.3.2 Other methods . 7
2 Normative references . 8
3 Terms and definitions . 8
4 General requirements . 13
4.1 Written practice . 13
4.1.1 Qualification and certification . 13
4.1.2 Additional requirements. 13
4.1.3 NDT techniques . 13
4.1.4 Training outlines . 13
4.1.5 Examination practices . 13
4.1.6 Administration . 13
4.1.7 Records . 14
4.2 Methods . 14
4.3 Responsibility . 14
4.3.1 General. 14
4.3.2 Responsible Level 3 . 14
4.3.3 Outside agency . 14
5 Qualification and certification levels . 15
5.1 Levels of qualification and certification . 15
5.1.1 General. 15
5.1.2 Trainee . 15
5.1.3 Level 1-Limited . 15
5.1.4 Level 1 . 15
5.1.5 Level 2 . 16
5.1.6 Level 3 . 16
5.1.7 Auditor . 17
6 Training and experience . 17
6.1 Training . 17
6.1.1 General. 17
6.1.2 Training outlines . 18
6.1.3 Previous training . 18
6.1.4 Equivalent training. 19
6.1.5 Health and safety training . 19
6.2 Training and examination personnel . 19
6.2.1 Responsible Level 3 . 19
6.2.2 Examiners . 19
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prEN 4179:2021 (E)
6.2.3 Instructors . 19
6.2.4 Outside agencies . 19
6.3 Experience . 19
6.3.1 General . 19
6.3.2 Previous experience . 20
6.3.3 Equivalent experience . 20
6.4 Emerging NDT methods . 21
6.4.1 Minimum hours . 21
6.4.2 Levels 1 and 2 . 21
6.4.3 Level 3 . 21
7 Examinations . 22
7.1 Purpose . 22
7.1.1 General . 22
7.1.2 Vision examination . 22
7.1.3 General examination . 22
7.1.4 Specific examination . 23
7.1.5 Practical examination . 23
7.2 Administration of examinations . 24
7.2.1 General . 24
7.2.2 Administration by an outside agency . 24
7.2.3 Scoring . 24
7.2.4 Re-examination . 24
8 Certification . 25
8.1 General . 25
8.2 Records . 25
8.2.1 Minimum requirements . 25
8.2.2 Record availability . 25
8.3 Loss of certification . 26
8.3.1 Expiration . 26
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 . 26
8.6 Annual proficiency review . 27
Annex A (normative) Credit system for recertification of Level 3 NDT personnel . 28
A.1 Scope . 28
A.2 Requirements . 28
A.3 Definitions . 28
Annex B (informative) Qualification and certification of Level 1-Limited . 31
B.1 Scope . 31
B.2 Requirements . 31
Annex C (normative) National aerospace nondestructive testing boards (NANDTB) . 34
C.1 Scope . 34
C.2 Requirements . 34
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C.3 Examinations . 36
C.4 Record retention . 36
Bibliography . 37

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European foreword
This document (prEN 4179:2021) has been prepared by the Aerospace and Defence Industries
Association of Europe — Standardization (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 4179:2017.
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Introduction
In the event of a conflict between the text of this document and the references cited herein, the
requirements of this document take precedence. Nothing in this document supersedes applicable laws
and regulations unless a specific exemption has been obtained.
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1 Scope
1.1 Purpose
This document establishes the minimum requirements for the qualification and certification of
personnel performing nondestructive 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.
1.2 Applicability
This document applies to personnel using NDT methods to test and/or accept materials, products,
components, assemblies or sub-assemblies. This document also applies to personnel: directly
responsible for the technical adequacy of the NDT methods used, who approve NDT procedures and/or
work instructions, who audit NDT facilities, or who 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. Personnel performing specialized inspections using
certain direct readout instruments as determined by a Level 3 certified in the method, do not require
qualification or certification to this document.
1.2.1 Implementation
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 NAS 410 or EN 4179 need not recertify to the
requirements of this document until their current certification expires.
1.3 Methods
1.3.1 Common methods
This document contains detailed requirements for the following common NDT methods:
Eddy Current Testing (ET)
Liquid Penetrant Testing (PT)
Magnetic Particle Testing (MT)
Radiographic Testing (RT)
Thermographic Testing (IRT)
Ultrasonic Testing (UT)
1.3.2 Other 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
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assembly. Such methods can include, but are not limited to, acoustic emission, neutron radiography,
leak testing, holography, and shearography. The requirements for personnel training, experience, and
examination for these other methods are established in accordance with 6.4 and are documented by the
employer.
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.
1
ISO 18490, 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.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
3.1
basic examination
examination utilized to verify a Level 3 candidate’s knowledge of NDT methods used by the employer at
a Level 2 proficiency
3.2
certification
written statement by an employer that an individual has met the applicable requirements of this
document
3.3
closed book examination
examination administered without access to any reference materials
3.4
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
3.5
committee meetings
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.

1
Published by: ISO International Organization for Standardization http://www.iso.ch/
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3.6
committee projects
specific identifiable official activities of regional or national technical societies, committees or work
groups
EXAMPLE 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.
3.7
direct observation
observer's viewing of the NDT process in a manner that permits uninterrupted, visual and verbal two-
way contact with the trainee
3.8
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 analog display, such as a scale/pointer
configuration, and do not require special skills or knowledge to set up the instrument and do not
involve adjusting signal displays such as gates, delays, gain, or phase to obtain measurements
EXAMPLE Common direct readout instruments include basic ultrasonic thickness gauges without an
oscilloscope display, and eddy current coating thickness gauges.
3.9
documented
condition of being recorded in written or electronic form
3.10
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
3.11
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
3.12
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
3.13
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
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3.14
experience
actual performance of an NDT method conducted in the work environment 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.
3.15
formal education
engineering or science studies at a technical school, college, or university
3.16
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.
3.17
general examination
written examination addressing the basic principles and theory of an NDT method
3.18
indication
response or evidence of a condition resulting from an NDT inspection that requires interpretation
3.19
instructor
individual designated or approved by the Responsible Level 3 or Examiner to provide training for NDT
personnel
3.20
interpretation
determination of whether indications are relevant or non-relevant
3.21
method
1 (one) of the disciplines of nondestructive testing (e.g. ultrasonic, radiography, etc.) within which
different techniques may exist
3.22
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
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3.23
non-film radiography
radiographic imaging that does not use a film-based recording medium
Note 1 to entry: Non-Film radiography includes, but may not be limited to, Computed Radiography, Digital
Radiography, Radioscopy, and Computed Tomography.
3.24
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
3.25
open book examination
examination administered with access to specific reference material that is provided with or referenced
in the examination
3.26
operating approval
written statement issued by the employer, based upon the scope of ce
...