1、ASD STANDARD NORME ASD ASD NORM prEN 4179 Edition P 4 June 2008 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 763 3565 - www.asd-stan.orgICS: Supersedes edition P 3 February 2003
2、 Will supersede EN 4179:2005Descriptors: ENGLISH VERSION Aerospace series Qualification and approval of personnel for non-destructive testing Srie arospatiale Qualification et agrment du personnel pour les contrles non destructifs Luft- und Raumfahrt Qualifikation und Zulassung des Personals fr zers
3、trungsfreie Prfungen This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the ex
4、perts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review
5、 by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving t
6、he EN the status of a national standard and by withdrawing any national standards conflicting with the EN. NOTE This standard is technically equivalent to NAS410 Revision 3 Edition approved for publication 30 June 2008 Comments should be sent within six months after the date of publication to ASD-ST
7、AN Quality Domain Copyright 2008 by ASD-STAN Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-prEN 4179:2008 2 Contents Page Foreword2 1 Scope 3 2 Normative references 4 3 Definitions as applied to this sta
8、ndard .4 4 General requirements8 5 Qualification and certification Levels. 10 6 Training and experience 12 7 Examinations. 16 8 Certification. 20 Annex A (normative) Credit System for Recertification of Level 3 NDT Personnel 22 Foreword In December 1998, the Aerospace Industry has established the In
9、ternational Aerospace Quality Group (IAQG) with the purpose of achieving significant improvements in quality and reductions in cost throughout the value stream. This organization, with representation from Aerospace companies in Americas, Asia and Europe and sponsored by AIA, SAE, SJAC and ASD-STAN h
10、as agreed to take responsibility for the technical contents of this standard which merges the NDT personnel certification requirements of NAS 410 and EN 4179. This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Quality Domain. After inquiries and votes carried out in accordan
11、ce with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-prEN 4179:2008 3 1 Scope 1.1
12、Purpose This standard 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. F
13、or the purposes of this standard, 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. Certification per EN ISO/CEI
14、17024 is not required by this standard unless specified by local or regulatory requirements. The term “certification” as defined in paragraph 3.1 is used throughout this standard as a substitute for the term “approval”. Except when otherwise specified in the written practice, certification in accord
15、ance with this standard includes operating approval. 1.2 Applicability This standard applies to personnel using NDT methods to test and/or accept materials, products, components, assemblies or sub-assemblies. This standard also applies to personnel directly responsible for the technical adequacy of
16、the NDT methods used, who write NDT procedures and/or work instructions, who audit NDT facilities, or who provide technical NDT support or training. This standard does not apply to individuals who only have administrative or supervisory authority over NDT personnel or to research personnel developin
17、g 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 standard. 1.3 Implementa
18、tion This standard addresses the use of a National Aerospace NDT Board (NANDTB). NANTDBs are only used as specified herein 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 require
19、ments of this standard until their current certification expires. 1.4 Common methods This standard contains detailed requirements for the following common NDT methods: Liquid penetrant (PT) Magnetic particle (MT) Eddy current (ET) Ultrasonic (UT) Radiography (RT)Thermography (IRT) Shearography (ST)
20、Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-prEN 4179:2008 4 1.5 Other methods When invoked by engineering, quality, cognizant engineering organization or prime contractor requirements, this standard a
21、pplies 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 may include, but are not limited to, acoustic emission, neutron radiography, leak testing and holography. Th
22、e requirements for personnel training, experience, and examination for these other methods shall be established in accordance with paragraph 6.4 and shall be documented by the employer. 2 Normative references 2.1 Standards The following documents are referenced in this standard: EN 473, Qualificatio
23、n and Certification of NDT Personnel General Principles. EN 4179, Aerospace series Qualification and approval of personnel for non-destructive testing. (current revision) NAS 410, Certification and Qualification of Nondestructive Test Personnel. (current revision) EN ISO/CE 17024, Conformity Assessm
24、ent- General Requirements for Bodies Operating Certification of Persons. ISO 9712, Non-Destructive Testing Qualification and Certification of Personnel. 2.2 Order of precedence In the event of a conflict between the text of this document and the references cited herein, the requirements of this docu
25、ment take precedence. Nothing in this document supersedes applicable laws and regulations unless a specific exemption has been obtained. 3 Definitions as applied to this standard 3.1 certification a written statement by an employer that an individual has met the applicable requirements of this stand
26、ard 3.2 closed book examination an examination administered without access to any reference materials 3.3 cognizant engineering organization the engineering or NDT organization of the prime contractor or end user authorized to make NDT-related decisions and give NDT-related approvals 3.4 direct obse
27、rvation direct observation is when the observer is able to come to the immediate aid of the trainee and remains within a distance that permits uninterrupted, unaided visual and verbal contact with the trainee Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction o
28、r networking permitted without license from IHS-,-,-prEN 4179:20085 3.5 direct readout instrument instruments that physically display measurements in dimensional or electrical units (e.g. inches, millimetres or % IACS, etc.) either as digital readout or an analog display, such as a scale/pointer con
29、figuration 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 For example, common direct readout instruments include basic ultrasonic thickness gauges without an oscilloscop
30、e display, and eddy current coating thickness gauges. 3.6 documented the condition of being recorded in written or electronic form 3.7 employer a government, prime contractor, sub-contractor, supplier, or outside agency employing or contracting the services of one or more individuals who perform NDT
31、 Self-employed individuals are included in this definition. 3.8 evaluation a 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 3.9 examination fo
32、rmal, controlled, documented testing conducted in accordance with a documented written practice to verify a candidates visual capability, skill or knowledge of an NDT method 3.10 examiner a Level 3 certified to this standard and designated by the Responsible Level 3 or NANDTB to administer all or pa
33、rt of the qualification and certification process, excluding vision examinations, in the NDT method(s) in which the Examiner is certified 3.11 experience actual performance of an NDT method conducted in the work environment resulting in the acquisition of knowledge and skill This does not include fo
34、rmal classroom training, but may include laboratory and on-the-job training as defined by the employers written practice. 3.12 formal training an organized and documented program of learning activities designed to impart the knowledge and skills necessary to be qualified to this standard Formal trai
35、ning may be a mix of classroom, practical and programmed self-instruction as approved by the Responsible Level 3, Examiner or NANDTB. 3.13 general examination a written examination addressing the basic principles and theory of an NDT method 3.14 indication the response or evidence of a condition res
36、ulting from an NDT inspection that requires interpretation to determine its significance Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-prEN 4179:20086 3.15 instructor an individual designated or approved
37、 by the Responsible Level 3 or NANDTB to provide training for NDT personnel 3.16 interpretation the determination of whether indications are relevant or non-relevant 3.17 method one of the disciplines of nondestructive testing (e.g. ultrasonic, radiography, etc.) within which different techniques ma
38、y exist 3.18 national aerospace NDT board (NANDTB) an independent national aerospace organization representing a nations aerospace industry that is chartered by the participating prime contractors and recognized by the nations regulatory agencies to provide or support NDT qualification, examination,
39、 and/or certification services in accordance with this standard 3.19 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 techn
40、ical guidance 3.20 open book examination an examination administered with access to specific reference material that is provided with or referenced in the examination 3.21 operating approval written statement issued by the employer, based upon the scope of certification, authorizing the individual t
41、o carry out defined tasks Such authorization can be dependent on the employer having provided job or task-specific training. 3.22 outside agency an independent company or organization outside the employer who provides NDT services to implement the requirements of this standard, such as training and
42、examination of NDT personnel. Consultants and self-employed individuals are included in this definition. 3.23 practical examination an examination to demonstrate an individuals ability to conduct an NDT method as used by the employer Questions and answers need not be written, but a checklist must be
43、 used and observations and results must be documented. 3.24 prime contractor an organization having overall responsibility for design, control and delivery of a system, component or product Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permit
44、ted without license from IHS-,-,-prEN 4179:2008 7 3.25 procedure a written general “how to” instruction for conducting a given process Procedures are then used to develop work instructions, as defined in 3.32. 3.26 qualification the skills, training, knowledge, examinations, experience and visual ca
45、pability required for personnel to properly perform to a particular level 3.27 responsible level 3 a Level 3 designated by the employer with the responsibility and authority to ensure that the requirements of this standard are met and to act on behalf of the employer 3.28 specific examination a writ
46、ten examination to determine an individuals understanding of operating procedures, codes, standards, product technology, test techniques, equipment and specifications for an NDT method as used by the employer 3.29 sub-contractor an organization responsible to the prime contractor for the manufacture
47、 or maintenance of aerospace products For the purposes of this standard, this includes suppliers and processors. 3.30 technique a category within a method; for example, ultrasonic immersion testing or ultrasonic testing of composites. Specific techniques within a method are defined by the employer o
48、r NANDTB 3.31 test sample a 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 candidates proficiency in an NDT method. Test samples can refer to actual hardware, fabricated test pa
49、rts, or, when applicable, images of actual hardware such as radiographs. 3.32 work instruction a 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 These are sometimes referred to in the industry as “technique sheets” or “data cards”. Such work instructions are
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