C 08.0 Attachment 9 PWS Ref 2_5 ASNT SNT-TC-1A dtd 2020.pdf

Recommended Practice No.

SNT-TC-1A

PERSONNEL QUA LIFICATION

AND CERTIFICATION IN

NONDESTRUCTIVE TESTING

EDITION

The American Society for Nondestructive Testing Inc.

ASNT. •• Creating a Safer World!�

SNT-TC-1A (2020)

Copyright C 2020 by The American Society for Nondestructive Testing.

The American Society for Nondestructive Testing Inc. (ASNT) is not responsible for the authenticity or accuracy of information herein.

Published opinions and statements do not necessarily reflect the opinion of ASNT. Products or services that are advertised or mentioned do not carry the endorsement or recommendation of ASNT.

No part of this publication may be reproduced or transmitted in any form, by means electronic or mechanical including photocopying, recording, or otherwise, without the expressed prior written permission of The American Society for Nondestructive Testing Inc.

IRRSP, NDT Handbook, Tlie NDT Tecl111icia11, and asnt.org are trademarks of The American Society for Nondestructive Testing Inc.

ACCP, ASNT, Level 1II Study Guide, Materials Eval11atio11, Nondestructive Testing Handbook, Researcl, i11 Nondestructive Evaluation, and RNDE are registered trademarks of The American Society for Nondestructive Testing Inc.

First printing 06/20 ebook 06/20

Errata, if available for this printing, may be obtained from ASNT's website, asnt.org. Ebooks contain all corrections and updates, including the latest errala.

ISBN: 978-1-57117-469-7 (prinl) ISBN: 978-1-57117-470-3 (ebook)

Printed in the United Slates of America

Published by:

The American Society for Nondestructive Testing Inc.

1711 Arlingate Lane Columbus, OH 43228-0518 asnt.org

Publications Team:

Toni Kervina, Director of Publications

Editorial:

Cynthia M. Leeman, Educational Materials Supervisor Haley Cowans, Educational Materials Edilor

Production:

Joy Grimm, Production Manager Synthia Jester, Graphic Designer and Illustrator

ASNT Mission Statement:

ASNT exists to create a safer world by advancing scientific, engineering, and technical knowledge in the field of nondestructive testing.

ASNT Code of Ethics:

The ASNT Code of Etliics was developed to provide members of the Society with broad ethical statements to guide their professional lives.

In spirit and in word, each ASNT member is responsible for knowing and adhering to the values and standards set forth in the Society's Code. More information, as well as the complete version of the Code of Ethics, can be found on ASNT's websile, asnt.org.

ii

FOREWORD

This Recommended Practice establishes the general framework for a qualification and certification program. In addition, the document provides the educational, experience, and training recommendations for the different test methods .

This recommended practice is not intended to be used as a strict specification. It is recognized, however, that contracts require programs, which meet the intent of this document. For such contracts, purchaser and supplier must agree upon acceptability of an employer's program.

The verb "should" has been used throughout this document to emphasize the recommendation presented herein. It is the employer's responsibility to address specific needs and to modify these guidelines as appropriate in a written practice. In the employer's written practice, the verb "shall" is to be used in place of "should" to emphasize the employer's needs.

The 2020 Edition of SNT-TC-lA is annotated so that users of the 2016 edition can quickly and easily locate new and updated material. The vertical lines in the margins of this document indicate that information in the text has been modi fied in some way.

An SNT-TC-lA Interpretation Panel is available to respond to written inquiries regarding the SNT-TC-IA guidelines.

These responses clarify the intent of ASNT's Standards Development Committee (SOC) and the recommendations of SNT-TC-IA and are subject to the statement of "Scope" in each edition of SNT-TC-IA.

To make an inquiry, use the SNT-TC-IA Interpretation Request Form on page 37 of this Recommended Practice.

Inquiries related to this recommended practice should be directed to the chair of the SNT-TC-IA Interpretation Panel at the following address:

SNT-TC-I A Interpretation Panel Chair c/o Director of Standards and Accreditation The American Society for Nondestructive Testing SNT"TC lAinterpretations@ASNT.org

Ill

SNT-TC-1A 2020

SNT-TC-1A SUBCOMMITIEE

Publication and review of this Recommended Practice was under the direction of the SNT-TC-lA Subcommittee which is a subcommittee of the Standards Development Committee (SDC). The SDC reports to the Board of Directors of The American Society for Nondestructive Testing.

Subcommittee Members:

Michael J. Ruddy, Chair Robert E. Cameron, Vice Chair Charles P. Longo, Staff Secretary

David R. Bajula Bill L. Baker James Gerry Churchwell L. Terry Clausing Daniel R. Craigo David L. Culbertson David R. Dechene Paul E. Deeds, Jr.

Nat Y. Faransso

Standards Development Committee:

Michael E. McDaniel, Chair Ronald T. Nisbet, Vice Chair

Notice to users of this document:

Jerry Fulin Darrell W. Harris David P. Harvey Hugh K. Howerton Michael P. Kirby Doron Kishoni Brian Laite Brock Mackin Joseph L. Mackin

When certificates or wallet cards are issued and provided by the employer, the requirements of

James A. MacMillan Walter R. Matulewicz Ronald R. Mika William C. Plumstead, Jr.

William C. Plumstead, Sr.

Robert F. Plumstead Mark R. Pompe Marvin W. Trimm David J. Vigne

ASNT Policy G-14 shall be followed to ensure appropriate usage of the ASNT name, acronym, and logo.

The certificate shall indicate that the certification is in accordance with the requirements of the employer's written practice.

See Section 9.5 for further guidance on properly issued certification certificates and wallet cards.

iv

CONTENTS

FOREWORD

• • • • • • • • • • • • • • • • e • • • • • • • e I e I I I I • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • I • • • I • • I I I I I e I I 1111

SNT-TC-1A SUBCOMMITTEE .............................................................. . iv

SUMMARY OF CHANGES ................................................................. . vi

RECOMMENDED PRACTICE NO. SNT-TC-1A PERSONNEL QUALIFICATION

A ND CERTIFICATION IN NONDESTRUCTIVE TESTING

1.0Soope

2.0 Def'1'1il;()l'IS . . . . . . . . . ........•....••••..•..••••••..•.......•..•...•••••...........••.•• 1 3 0 NondAsll'\.JCIIV8 Teshng MelhodS . . • . • . . . . . . . • . . . . • . . . • . • . • . • . . . . . . . . . . . . . . . . . • . . . . . • • . • . . . • • . . . • . . 2 4 O Levels of Ouahficatton . . . • . . . . . . . . . . . . . . . . . . . . . • • . . • • . • . . • . . . • . . . . . . . . . . . . • • • . . . • . . . . . . • • • . . • . . .3

6.0 Wntten Pracoce

6.0 Eo.x:at1011, lra111f19, am Expeqeric:e Requirements b tr.tial OJa!tication . . . . . . . . . . • . . . . . • . . . • • . . . . . • . . • . . • . 3 fable 6.3 1 A Recoon,encled ln.tial Trairu19 and Expenence Levels . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . • fable 6.3 1 8 Recommended Initial Trarnng and Expeneoce Levels fat NOT level II l...lrtted Cettficat.Jons ........................ _ . . • . . . . . . . . . . . . • . . . . • . . . . . . . . . . . . . . . . . . ....•... 5

7.0 Training Programs

8.0 F.)(cYnnalCl'lS . . . . . . . . . •......................••.•....•...•...•...•.....••••••... , ...•...•

Table 8.3 4. MM'wr\Jm NUTt>er of Examination Ouesto'ls ................................. : ............... a

9.0 Cert1'"ica1ion . . . • . • • . . . . . . . . • . . . • . . . . • ..•••••••.•••.......•........•.••.••.•.•...•....•.. 11

10. 0 Tectnical R3rfarnance [va.uatoo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......• ,

11. 0 htem.Jp!ed Service . . . . . . . . . . . . . . . . . . ....................... , ... ,

12.0 Flecertlf1C8100 .....•... , ••..... , , •.• , , •• , . . . . ....•..• , ..... , , ...••.... " • • • • • . . . . . . . •

13.0 Tennnatial .......•........... , . ,

14.0 Rensta!ernent . . . . . . . . . . . . . . . . . . . . . . _ . . . . . •

15 o Referenced F\Jblcations

APPENDIXES

Appenox A. Example ()uesUons . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . • . • . • . • � to ExanJ)'e OJestictls ..........•.......•...•......................•

Appen(lx 8. NOT Practical E.xarrW'1a1 oo Olecl<lisl . . . . . . . . . . . . . . . . . • . . . . • . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . .. _ _ 35 AppeO()X C. Exi:irnple Cerli'ca!IOfl Tsn,plale . . . • • . . . . . . . . . . . . • • . . • . . . . . . . . . . . . . . . . . . . . . . . • • •

SNT-TC-1A INTERPRETATION REQUEST FORM

V

SNT-TC-1A 2020

vi

SUMMARY OF CHANGES

Summary of Changes in the 2020 Edition (and 2018 addendum to the 2016 Edition}

1. "Notice to Users" notification added on page vi to inform users of ASNT Policy G-14 with regard to usage of ASNT's name and logo.

2. New paragraph 1.5 to explain proper usage of ASNT examinations as a substitute for examinations in Sections 8.4 and 8.5. The wording in Sections 8.4, 8.5, and 8.7 was removed in favor of the more general recommendation in new paragraph 1.5.

3. New term, "False Call," was added. The term was already in use within the document.

4. New term, "Detection Rate," was added. The term was already in use within the document.

5. New term, "Method," was added. The term was already in use within the document.

6. New term, "Personalized Instruction," was added. The term was added to clarify the multiple options available to industry for obtaining NDT training.

7. New terms, "Calibration, Instrument," paragraph 2.1.1 and "Standardization, Instrument," paragraph

2.1.20 adopted from ASTM £1316. This is the beginning of an effort to standardize terminology across all NDT methods in all ASNT publications. These additions are also reflected in paragraph 4.3. l and 4.3.2.

8. Revision of the term, "Employer," paragraph 2. l.9, to address the evolution of our changing workforce and acknowledge the reality that some personnel are not permanent employees but are provided through agencies and other means.

9. New term, "Third-Party Agency," paragraph 2.1.22 is defined because the phrase is used in new definition of"Employer," paragraph 2.l.9.

IO.Paragraph 8.1.5, changed the Practical examination score from 70 to 80%.

11. Removed the 20 radiograph image requirement in paragraph 8.5.2.2 and made the NDT Level III responsible for determining the proper amount for the employer's application.

12. Paragraph 8.5.4 and 8.5.5, added "The Written Practice should address detection rates as well as the maximum number of false calls acceptable."

13. New Section 9.5 to provide guidance on how to properly develop an NDT Certification certificate and wallet card and stay within the ASNT logo and name use policies.

14. Tables 6.3.l A and 8.3.4, added a new Technique under Ultrasonic Testing; Full Matrix Capture.

15. Table 6.3.1 A, increased experience requirements for PAUT and TOFD to 320 hours from 160.

16.Table 8.3.4, added a general ex:mination requirement for PAUT and TOFD.

17. Table 6.3.1 B, removed footnote l, which recommended that while gaining work experience, 1000 radiographs should be reviewed.

SNT-TC-1A

Recommended Practice No. SNT-TC-IA Personnel Qualification and Certification in Nondestructive Testing

1.0 Scope "

1.1 It is recognized that the effectiveness of nondestructive testing (NDT) applications depends upon the capabilities of the personnel who are responsible for, and perform, NDT. This Recommended Practice has been prepared to establish guidelines for the qualification and certification of NDT personnel whose specific jobs require appropriate knowledge of the technical principles underlying the nondestructive tests they perform, witness, monitor, or evaluate.

1.2 This document provides guidelines for the establishment of a qualification and certification program.

1.3 These guidelines have been developed by The American Society for Nondestructive Testing Inc. to aid employers in recognizing the essential factors to be considered in qualifying personnel engaged in any of the NDT methods listed in Section 3.

1.4 It is recognized that these guidelines may not be appropriate for certain employer's circumstances and/or applications. In developing a written practice as required in Section 5, the employer should review the detailed recommendations presented herein and modify them, as necessary, to meet particular needs. Such modification may alter but shall not eliminate basic provisions of the program such as training, experience, testing, and recertification. Supporting technical rationale for modification of detailed recommendations should be provided in an Annex to the written practice.

1.5 The use of third-party central certifications (e.g., ACCP, ASNT NDT Level II, and other internationally recognized third-party certification programs) may be used in place of employer examinations, as applicable, provided there is no conflict with the governing industry code or standard.

1.5. l For Level II specific and practical examinations, the NDT Level III should ensure that the content of these examinations satisfies the requirements in Sections 8.4 and 8.5, respectively in the employer's program.

1.5.2 The use of third-party central certifications satisfying the requirements for employer-based examinations shall be documented in the employer's written practice.

2.0 Definitions

2.1 Terms included in this document are defined as follows:

2.1.1 Calibration, Instrument: the comparison of an instrument with, or the adjustment of an instrument to, a known reference(s) often traceable to the applicable country's national institute or standards body. (See also Standardization, Instrument.)

2.1.2 Certification: written testimony of qualification.

2.1.3 Certifying Authority: the person or persons properly designated in the written practice to sign certifications on behalf of the employer.

2.1.4 Certifying Agency: the employer of the personnel being certified.

2.1.5 Closed-Book Examination: an examination administered without access to reference material except for materials supplied with or in the examination. (See 8.1.3.)

2.1.6 Comparable: being at an equivalent or similar level of NDT responsibility and difficulty as determined by the employer's NOT Level Ill.

2.1.7 Detection Rate: the number or percentage of false calls allowed for a test specimen as defined by the NDT Level III.

2.1.8 Documented: the condition of being in written form.

2.1.9 Employer: the corporate, private, or public entity, which employs personnel directly or indirectly for wages, salary, fees, or other considerations. This would include employers who obtain their qualified supplemental workforce personnel through third-party agencies, providing the use and certification of those supplemental employees is addressed in the employer's written practice.

SNT-TC-1A 2020 I RECOMMENDED PRACTICE

2.1.10 Experience: work activities accomplished in a specific NOT method under the direction of qualified supervision including the performance of the NDT method and related activities but not including time spent in organized training programs.

2. l.11 False Call: when an indication and/or grading unit is incorrectly identified as being a defect.

2.1.12 Grading Unit: a Qualification Specimen can be divided into sections called grading units, which do not have to be equal length or be equally spaced. Grading units are unflawed or flawed and the percentage of flawed/unfiawed grading units required should be approved by the NDT Level III.

2.1.13 Limited Certification: nondestructive test methods may be further subdivided into limited disciplines or techniques to meet specific employer's needs; these are NOT Level II certifications, but to a limited scope.

2.1.14 Method: one of the disciplines of NOT; for example, ultrasonic testing, within which various test techniques may exist.

2.1.15 Nondestructive Testing: a process that involves the inspection, testing, or evaluation of materials, components, and assemblies for materials' discontinuities, properties, and machine problems without further impairing or destroying the part's serviceability.

Throughout this document the term NDT applies equally to the NOT inspection methods used for material inspection, flaw detection, or predictive maintenance (PdM) applications.

2.1.16 Outside Agency: a company or individual who provides NOT Level III services and whose qualifications to provide these services have been reviewed by the employer engaging the company or individual.

2.1.17 Personalized Instruction: may consist of blended classroom, supervised laboratory, and/or hybrid online competency based course delivery. Modular content is covered through online presentations, in the classroom, and/or in small groups. Personalized instruction also enables students to achieve competency using strategies that align with their knowledge, skills and learning styles.

2.1.18 Qualification: demonstrated skill, demonstrated knowledge, documented training, and documented experience required for personnel to properly perform the duties of a specific job.

2.1.19 Recommended Practice: a set of guidelines to assist the employer in developing uniform procedures for the qualification and certification of NOT personnel to satisfy the employer's specific requirements.

2.1.20 Standardization, Instrument: the adjustment of an NDT instrument using an appropriate reference standard, to obtain or establish a known and reproducible response. (This is usually done prior to an examination, but can be carried out anytime there is concern about the examination or instrument response.) (See also Calibration, Instrument.)

2.1.21 Technique: a category within an NOT method; for example, ultrasonic thickness testing.

2.1.22 Third-Party Agency: a company or organization, without an established written practice, providing supplemental workforce to the employer; for example, a temporary staffing company.

2.1.23 Training: an organized program developed to impart the knowledge and skills necessary for qualification.

2.1.24 Written Practice: a written procedure developed by the employer that details the requirements for qualification and certification of its employees.

3.0 Nondestructive Testing Methods

3.1 Qualification and certification of NDT personnel in accordance with this Recommended Practice is applicable to each of the following methods:

Acoustic Emission Testing Magnetic Particle Testing Electromagnetic Testing Microwave Technology Testing Ground Penetrating Radar Neutron Radiographic Testing Guided Wave Testing Radiographic Testing Laser Methods Testing Thermal/Infrared Testing Leak Testing Ultrasonic Testing Liquid Penetrant Test{ng Vibration Analysis Magnetic Flux Leakage Testing Visual Testing

4,0 Levels of Qualification

4.1 There are three basic levels of qualification. The employer may subdivide these levels for situations where additional levels are deemed necessary for specific skills and responsibilities.

4.2 While in the process of being initially trained, qualified, and certified, an individual should be considered a trainee. A trainee should work with a certified individual. The trainee should not independently conduct, interpret, evaluate, or report the results of any NOT test.

4.3 The recommended technical knowledge and skill sets for the three basic levels of qualification are as follows:

4.3.1 NDT Level I. An NDT Level I individual should have sufficient technical knowledge and skills to be qualified to properly perform specific standardizations, specific NDT, and specific evaluations for acceptance or rejection determinations according to written instructions and to record results. The NOT Level I should receive the necessary instruction and supervision from a certified NDT Level II or III individual.

4.3.2 NDT Level II. An NOT Level II individual should have �ufficient technical knowledge and skills to be qualified to set up and standardize equipment and to interpret and evaluate results with respect to applicable codes, standards, and specifications. The NDT Level II should be thoroughly familiar with the scope and limitations of the methods for which qualified and should exercise assigned responsibility for on-the-job training and guidance of trainees and NDT Level I personnel. The NDT Level II should be able to organize and report the results ofNDT tests.

4.3.3 NDT Level III. An NOT Level III individual should have sufficient technical knowledge and skills to be capable of developing, qualifying, and approving procedures; establishing and approving techniques: interpreting codes, standards, specifications, and procedures;

and designating the particular NDT methods, techniques, and procedures to be used. The NDT Level III should be responsible for the NDT operations for which qualified and assigned and should be capable of interpreting and evaluating results in terms of existing codes, standards, and specifications. The NDT Level III should have sufficient practical background in applicable materials, fabrication, and product technology to establish techniques and to assist in establishing acceptance criteria when none are otherwise available. The NDT Level III should have general familiarity with other appropriate NDT methods, as demonstrated by an ASNT Level III Basic examination or other means. The NDT Level III, in the methods in which certified, should have sufficient technical knowledge and skills to be capable of training and examining NDT Level I, II, and III personnel for certification in those methods.

5.0 Written Practice

5.1 The employer shall establish a written practice for the control and administration of NOT personnel training, examination, and certification.

5.2 The employer's written practice should describe the responsibility of each level of certification for determining the acceptability of materials or components in accordance with the applicable codes, standards, specifications, and procedures.

5.3 The employer's written practice should describe the training, experience, and examination requirements for each level of certification by method and technique, as applicable.

5.4 The employer's written practice should identify the test techniques within each test method applicable to its scope of operations.

5.5 The employer's written practice shall be reviewed and approved by the employer's NDT Level 111.

5.6 The employer's written practice shall be maintained on file.

6.0 Education, Training, and Experience Requirements for Initial Qualification

6.1 Candidates for certification in NDT should have sufficient education, training, and experience to ensure qualification in those NDT methods in which they are being considered for certification.

Documentation of prior certification may be used by an employer as evidence of qualification for comparable levels of certification.

6.2 Documented training and/or experience gained in positions and activities comparable to those of Levels I, II, and/or III prior to establishment of the employer's written practice may be considered in satisfying the criteria of Section 6.3.

6.3 To be considered for certification, a candidate should satisfy one of the following criteria for the applicable NDT level:

Table 6.3.1 A. Recommended Initial Training and Experience Levels

Examination Method

Acoustic Emission Testing

Electromagnetic Testing

Ground Penetrating Radar

Guided Wave Testing

Laser Methods Testing

Leak Testing

Liquid Penelrant Testing

Magnetic Flux Leakage

Magnetic Particle Testing

Microwave Technology Testing

Neutron Radiographic Testing

Radiographic Testing

Thermal/ lnlrared Testing

Ultrasonic Testing

Vibration Analysis

Visual Testing

NOT

Level

Training Hours

Technique

AC Field Measurement

Eddy Current Testing

Remote Field Testing

� rr, �i i..=..-=------- . - -- ,,I

40 �-� ...... ____ _

Profilomelry

Holography/ Shearography

Bubble Leak Testing

Pressure Change Leak Testing

Halogen Diode Leak Testing

Mass Spectrometer Leak Testing

Radiography

Computed Radiography

Computed Tomography

Digital Radiography

Building Diagnostics 34

Electrical and Mechanical 34

Experience

Minimum Hours Total Hours

In Method or In NOT

Technique 210 400

630 1200

210 400

630 1200

210 400

630 1200

210 400

630 1200

60 120

420 800

240 460

240 460

70 130

140 260

210 400

630 1200

3 15

35 80

105 200

280 530

105 200

280 530

280 530

420 800

70 130

140 270

70 130

210 400

70 130

210 400

210 400

630 1200

420 800

1680 2400

210 400

630 1200

210 400

630 1200

210 400

630 1200

210 400

630 1200

210 400

1260 1800

1260 1800

1260 1800

210 400

630 1200

320 n/a

320 n/a 320 n/a

420 800

1680 2400

70 130

140 270

Table 6.3.1 A Notes:

1.0 A person may be qualilied directly to NDT Level II with no lime as a certified NOT Level I, providing the recommended training and experience consists of the sum of the hours recommended for NDT Level l and Level II.

2.0 For NDT Level Ill certification, the experience should consist of the sum of tlie hours for NOT Level I and Level II, plus the additional time in 6.3.2, as applicable. The formal training should consist of the NOT Level I and Level II training, plus any additional formal training as defined in the employer's written practice.

3.0 Listed training hours may be adjusted as described in the employer's written practice depending on the candidate's actual education level, e.g. grammar school, college graduate in engineering, etc.

4.0 Training should be outlined in the employer's written practice. MT training hours may be counted toward MFL training hours as defined 1n employer's written practice.

5.0 If an individual is currently certified in an ET technique and a full-course formal was used lo meet the initial qualificatlons in that technique, the minimum training hours to qualify in another ET technique at the same NOT level may be reduced up to 40% ii so defined in the employer's written practice. If an individual is certilied in an ET technique, the minimum experience to qualify for anolher ET technique al the same level or lo the next level may be reduced by up to 50% if so defined in the employer's written practice.

6.0 While fulfilling total NDT experience requirement, experience may be gained in more than one method, however, the minimum hours must be met for each method.

7.0 If an individual is currently certified in an RT technique and a full-course format was used to meet the Initial qualifications in that technique, the minimum additional training hours to qualify in another technique at the same level should be 24 hours (of which at least 16 hours should be equipment familiarization). The training outline should be as defined in the employer's written practice. If an individual is certified in a technique, the minimum additional expenence required to qualify for another technique at the same level may be reduced by up to 50%, as defined in the employer's written practice.

8.0 Independent of the training recommended for Level I and Level II certification, a trainee is required to receive radiation safety training as required by the regulatory jurisdiction.

9.0 If an individual is currently certified in one IR technique and a full-course format was used to meet the initial qualifications in that technique, the minimum additional training hours to qualify in another technique at the same level should be 20 hours (of which at least 16 hours should be specific technique familiarization). The training outline should be as defined m the employer's wrillen practice. If an individual is certified in a technique, the minimum additional experience required lo qualify for another technique at the same level may be reduced by up to 50%, as defined in the employer's wrillen practice.

10.0 Full Matrix Capture, Time of Flight Diffraction, and Phased Array Ultrasonic Testing require Ultrasonic Testing Level II certification as a prerequisite.

11.0 In addilion to the training recommended in this table for FMC, TOFD, and PAUT, supplemental specific hardware and software training should be required for automated or semiautomated lechnique applications. The employer's written practice should fully describe the nature and extent of the addilional training required for each specific acquisition or analysis software and instrumenUsystem used. The employer's written practice should also describe the means by which the examiner's qualification will be determined for automated and semiautomaled techniques.

Table 6.3.1 B. Recommended lnltlal Training and Experience Levels for NOT Level II Limited Certifications

Examination Limited Certification Technician's Minimum Work

Formal Training Experience In Method Technique Starting Point

Technique (Hours)

40 220 Radiographic Testing

Film Interpretation Non-Radiographer

Film lnterpretalion RT Level I 24 220

Digital Thickness Measurement

Ultrasonic Testing (numeric oulput only) A-scan Thickness

Measurement

6.3. l NDT Levels I and II

Trainee 8 40

Trainee 24 175

Table 6.3.l A lists the recommended training and experience hours to be considered by the employer in establishing written practices for initial qualification of NDT Level I and Level II individuals.

Table 6.3.l B lists initial training and experience hours, which may be considered by the employer for specific limited applications as defined in the employer's written practice.

Limited certifications should apply to individuals who do not meet the full training and experience of Table 6.3.1 A. Limited certifications issued in any method should be approved by the NDT Level III and documented in the certification records.

6.3.2 NOT Level III

6.3.2.1 Have a bachelor's degree (or higher) in engineering or science, plus one additional year of experience beyond the Level II requirements in NOT in an assignment comparable to that of an NOT Level II in the applicable NOT method(s), or:

6.3.2.2 Have completed with passing grades at least two years of engineering or science study at a university, college, or technical school, plus two additional years of experience beyond the NOT Level II requirements in NOT in an assignment at least comparable to that of NOT Level II in the applicable NOT method(s), or:

6.3.2.3 Have four years of experience beyond the NOT Level II requirements in NOT in an assignment at least comparable to that of an NOT Level II in the applicable NOT method(s).

7.0 Training Programs

The above NOT Level III requirements may be partially replaced by experience as a certified NOT Level II or by assignments at least comparable to NOT Level II as defined in the employer's written practice.

7.1 Personnel being considered for initial certification should complete sufficient organized training.

The organized training may include instructor-led training, personalized instruction, virtual instructor-led training, computer-based training, or web-based training. Computer-based training and web-based training should track hours and content of training with student examinations in accordance with 7.2. The sufficiently organized training shall be such as to ensure the student is thoroughly familiar with the principles and practices of the specified NOT method related to the level of certification desired, and applicable to the processes to be used and the products to be tested. All training programs should be approved by the NOT Level III responsible for the applicable method.

7.2 The training program should include sufficient examinations to ensure understanding of the necessary information.

7.3 Recommended training course outlines and references for NOT Levels I, II, and III personnel, which may be used as technical source material, are contained in ANSI/ASNT CP-105: ASNT Standard Topical Outlines for Qualification of Nondestructive Testing Personnel.

7.4 The employer who purchases outside training services is responsible for assuring that such services meet the requirements of the employer's written practice.

8.0 Examinations

8.1 Administration and Grading

8.1.1 All qualification examination questions shall be approved by the NOT Level III responsible for the applicable method.

8.1.2 An NDT Level III should be responsible for the administration and grading of examinations specified in Section 8.3 through 8.8 for NOT Level I, II, or other Level III personnel. The administration and grading of examinations may be delegated to a qualified representative of the NOT Level III and so recorded. A qualified representative of the employer may perform the actual administration and grading ofNDT Level III examinations specified in 8.7.

8.1.2.1 To be designated as a qualified representative of the NOT Level III for the administration and grading of NOT Level I and Level II personnel qualification examinations, the designee should have documented, appropriate instruction by the NDT<ltevel III in the proper administration and grading of qualification examinations prior to conducting and grading independent qualification examinations for NDT personnel. Additionally, the practical examination should be administered by a person certified in the applicable NOT method as NOT Level II or III.

8.1.3 All NOT Level I, II, and III written examinations should be closed-book except that necessary data, such as graphs, tables, specifications, procedures, codes, etc., may be provided with or in the examination. Questions utilizing such reference materials should require an understanding of the information rather than merely locating the appropriate answer.

8.2

8.3

8.4

8.1.4 For NOT Level I and II personnel, a composite grade should be determined by simple averaging of the results of the general, specific, and practical examinations described below.

For NOT Level III personnel, the composite grade should be determined by simple averaging of the results of the basic, method, and specific examinations described below.

8.1.5 Examinations administered by the employer for qualification should result in a passing composite grade of at least 80%, with no individual written examination having a passing grade less than 70%. The practical examination should have a passing grade of at least 80%.

8.1.6 When an examination is administered and graded for the employer by an outside agency and the outside agency issues grades of pass or fail only, on a certified report, then the employer may accept the pass grade as 80% for that particular examination.

8.1.7 The employer who purchases outside services is responsible for ensuring that the examination services meet the requirements of the employer's written practice.

8.1.8 In no case shall an examination be administered by one's self or by a subordinate.

Vision Examinations "

8.2.1 Near-Vision Acuity. The examination should ensure natural or corrected near-distance acuity in at least one eye such that the applicant is capable of reading a minimum of Jaeger Number 2 or equivalent type and size letter at the distance designated on the chart but not less than 12 in. (30.5 cm) on a standard Jaeger test chart. The ability to perceive an Ortho Rater minimum of 8 or similar test pattern is also acceptable. This should be administered annually.

8.2.2 Color Contrast Differentiation. The examination should demonstrate the capability of distinguishing and differentiating contrast among colors or shades of gray used in the method as determined by the employer. This should be conducted upon initial certification and at five-year intervals thereafter.

8.2.3 Vision examinations expire on the last day of the month of expiration.

General (Written - for NDT Levels I and II)

8.3.1 The general examinations should address the basic principles of the applicable method.

8.3.2 In preparing the examinations, the NDT Level III should select or devise appropriate

8.3.3 8.3.4

8.3.5 questions covering the applicable method to the degree required by the employer's written practice.

See Appendix A for example questions.

The minimum number of questions that should be given is shown in Table 8.3.4.

A valid ACCP Level II or ASNT NOT Level II certificate may be accepted as fulfilling the general examination criteria for each applicable method if the NOT Level III has determined that the ASNT examinations meet the requirements of the employer's written practice.

Specific (Written - for NDT Levels I and II)

8.4.1 The specific examination should address the equipment, operating procedures, and NDT techniques that the individual may encounter during specific assignments to the degree required by the employer's written practice.

8.4.2 The specific examination should also cover the specifications or codes and acceptance criteria used in the employer's NOT procedures.

8.4.3 The minimum number of questions that should be given is shown in Table 8.3.4.

SNT-TC-1 A 2020 I RECOMMENDED PRACTICE

Table 8.3.4. Minimum Number of Examination Questions

Acoustic Emission TesUng

Electromagnetic TesUng

Alternating Current Field Measurement 40 40 20 20

Eddy Current Testing 40 40 20 20

Remote Field Testing 30 30 20 20

Ground Penetrating Radar 30 40 20 20

Guided Wave Testing 40 40 20 20

Laser Methods Testing

Profilometry

Holography/Shearography

LeakTesUng

Bubble Leak Testing 20 20 15 15

Pressure Change Leak Testing 20 20 15 15

Halogen Diode Leak Testing 20 20 15 15

Mass Spectrometer Leak Testing 20 20 20 40

Uquld Panetrant Tasting 40 40 20 20

Magnetic Flux Leakage Testing 20 20 20 15

Magnetic Particle Testing 40 40 20 20

Microwave Technology Testing 40 40 20 20

Neutron Radiographic Testing 40 40 20 20

Radiographic Testing

Radiography

Radiographic Film Interpretation - Non·Radiographer

Radiographic Film Interpretation - Radiographer (Certified RT NOT Level t)

Computed Radiography 40 40 20 20

Computed Tomography 40 40 20 20

Digital Radiography 40 40 20 20

Thermalllnfral'Ud Testing 40 20

Building Diagnostics 50 40

Electrical and Mechanical Testing 50 40

Materials Testing 50 40

Ultrasonic Testing 40 20

Full Matrix Capture 40 30

Phased Array Ultrasonic Tesling 40 30

Tim� of Flight Diffraction 40 30

Digital Thickness Measurement 20 10 (numeric output only)

A-scan Thickness Measurement 30 15

Vibration Analysis 40 40 20 60

Visual Testing 40 40 20 20

8.5 Practical (for NOT Level I and II)

8.5.1 The candidate should demonstrate familiarity with and ability to operate the necessary

NOT equipment, record, and analyze the resultant information to the degree required.

8.5.2 At least one flawed specimen or component should be tested and the results of the NOT analyzed by the candidate.

8.5.2.1 Phased Array and Time of Flight Diffraction Practical Examination. Flawed samples used for practical examinations should be representative of the components and/or configurations that the candidates would be testing under this endorsement and approved by the NOT Level III.

8.5.2.2 For Film Interpretation Limited Certification, the practical examination should consist of review and grading of a sufficient number of radiographs to demonstrate satisfactory performance to the satisfaction of the NDT Level III. The number of radiographs should be addressed in the employer's written practice.

8.5.3 The description of the specimen, the NDT procedure, ittcluding checkpoints, and the results of the examination should be documented.

8.5.4 NDT Level I Practical Examination. Proficiency should be demonstrated in performing the applicable NDT technique on one or more specimens or machine problems approved by the NDT Level III and in evaluating the results to the degree of responsibility as described in the employer's written practice. At least ten (10) different checkpoints requiring an understanding of test variables and the employer's procedural requirements should be included in this practical examination. The candidate should detect all discontinuities and conditions specified by the NDT Level III. The written practice should address detection rates as well as the maximum number of false calls acceptable.

Note: While it is normal to score the practical on a percentile basis, practical examinations should contain checkpoints that failure to successfully complete will result in failure of the examination.

8.5.5 NDT Level II Practical Examination. Proficiency should be demonstrated in selecting and performing the applicable NDT technique within the method and interpreting and evaluating the results on one or more specimens or machine problems approved by the NDT Level III. At least ten (10) different checkpoints requiring an understanding of NOT variables and the employer's procedural requirements should be included in this practical examination. The candidate should detect all discontinuities and conditions specified by the NDT Level III. The written practice should address detection rates as well as the maximum number of false calls acceptable. An example of a practical examination checklist is attached as Appendix B to this Recommended Practice. The example checklist has been provided as guidance on development of practical examinations for any method or level.

Note: While it is normal to score the practical on a percentile basis, practical examinations should contain checkpoints that failure to successfully complete will result in failure of the examination.

8.6 Sample questions for general examinations are presented in the separate question booklets that can be obtained from the ASNT International Service Center. These questions are intended as examples only and should not be used verbatim for qualification examinations. The following ASNT Questions & Answers Books are available from the ASNT International Service Center:

Test Method

Acoustic Emission Testing Electromagnetic Testing

1. Alternating Current Field Measurement

2. Eddy Current Testing

3. Remote Field Testing

Ground Penetrating Radar Guided Wave Testing Laser Testing

1. Profilometry

2. Holography/Shearography

Leak Testing

1. Bubble Leak Testing

2. Pressure Change Measurement Testing

3. Halogen Diode Leak Testing

4. Mass Spectrometer Leak Testing

Liquid Penetrant Testing Magnetic Flux Leakage Testing Magnetic Particle Testing Microwave Technology Testing Neutron Radiographic Testing Radiographic Testing

1. Radiography

2. Computed Radiography

3. Computed Tomography

4. Digital Radiography

Thermal/Infrared Testing Ultrasonic Testing Vibration Analysis Visual Testing

• In course of preparation

8.7 NDT/PdM Level III Examinations

8.7.1 Basic Examinations

Question Booklets

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8.7.1.1 NDT Basic Examination (need not be retaken to add another test method as long as the candidate holds a current Level III certificate or certification). The minimum number of questions that should be given is as follows:

8.7.1.1.1 Plfteen questions relating to understanding the SNT-TC-JA document

8.7.1.1.2 Twenty questions relating to applicable materials, fabrication, and product technology.

8.7.1.1.3 Twenty questions that are similar to published NOT Level II questions for other appropriate NDT methods.

8.7.1.2 PdM Basic Examination (need not be retaken to add another test method as long as the candidate holds a current Level III certificate or certification). The minimum number of questions that should be given is as follows:

8.7.1.2.1 Fifteen questions relating to understanding the SNT-TC lA document.

8.7.1.2.2 Twenty questions relating to applicable machinery technology.

8.7.1.2.3 Thirty questions that are similar to published NOT Level II questions for other appropriate PdM methods.

9.0

8.7.2 Method Examination (for each method).

8.7.2.1 Thirty questions relating to fundamentals and principles that are similar to published ASNT NOT Level III questions for each method, and

8.7.2.2 Fifteen questions relating to application and establishment of techniques and procedures that are similar to the published ASNT'NOT Level III questions for each method, and

8.7.2.3 Twenty questions relating to capability for interpreting codes, standards, and specifications relating to the method.

8.7.3 Specific Examination (for each method).

8.7.3.1 Twenty questions relating to specifications, equipment, techniques, and procedures applicable to the employer's product(s) and methods employed and to the administration of the employer's written practice.

8.7.4 A valid endorsement on an ASNT NOT Level III certificate or ACCP Professional Level III certificate fulfills the examination criteria described in &7.1 and 8.7.2 for each applicable NOT method.

8.8 Reexamination

8.8.1 Those failing to attain the required grades should wait at least 30 days or receive suitable additional training as determined by the NOT Level III before reexamination.

Certification

9.1 Certification ofNDT personnel to all levels of qualification is the responsibility of the employer.

9.2 Certification of NOT personnel should be based on demonstration of satisfactory qualification in accordance with Sections 6, 7, and 8, as described in the employer's written practice.

9.3 At the option of the employer, an outside agency may be engaged to provide NOT Level III services. In such instances, the responsibility of certification of the employees shall be retained by the employer.

9.4 Personnel certification records should be maintained on file by the employer for the duration specified in the employer's written practice and should include the following:

9.4.1 Name of certified individual.

9.4.2 Level of certification, NOT method and/or technique, as applicable, and limitations (if any), as applicable.

9.4.3 Educational background and experience of certified individuals.

9.4.4 Statement indicating satisfactory completion of training in accordance with the employer's written practice.

9.4.5 Results of the vision examinations prescribed in 8.2 for the current certification period.

9.4.6 Current examination copy(ies) or evidence of successful completion of examinations.

9.4.7 Composite grade(s) or suitable evidence of grades.

9.4.8 Signature of the NOT Level III that verified qualifications of candidate for certification.

9.4.9 Dates of certification and/or recertification.

9.4.10 Certification expiration date.

9.4.11 Signature of employer's certifying authority.

9.5 Certification certificates and wallet cards. The following recommendations are considered best practice and should be followed:

9.5.1 The legal name of the employer should be clearly identified followed by the document number and revision/edition number of the written practice.

9.5.2 The certificate should indicate "SNT-TC-lA" followed by the four-digit year of the applicable edition of SNT-TC-lA that the written practice was developed to follow.

9.5.3 Full legal name of the certified individual in the ISO basic Latin alphabet. Additional characters may also be used where customary to accommodate local languages.

9.5.4 Level of certification, NOT method and/or technique, as applicable and limitations (if any).

9.5.5 Limitations of certification authorization should be clearly defined, when appropriate for the employer, which may include restrictions on product forms, industry sectors, codes, standards, and examination procedures.

9.5.6 The full printed legal name and signature of both the designated NOT Level III that verified the qualifications of the candidate for certification and the designated certifying aAuthority when the Level III and certifying authority are identified as separate positions in the employer's written practice.

9.5.6.l If applicable, the ASNT issued Level III identification number, when either or both of the signers hold ASNT Level III certifications.

9.5.7 The certificate or wallet card should be fully completed at the time of signing by the designated NOT Level III and/or certifying authority so that no fill-in-the-blank data remains to be completed by others.

9.5.7.1 Changes to certificates or wallet cards should require that a new certificate or wallet card be issued whenever changes or alterations are necessitated.

9.5.8 Dates of certification and expiration.

10.0Technical Performance Evaluation

10.1 NOT personnel may be reexamined anytime at the discretion of the employer and have their certificates extended or revoked.

102 Periodically, as defined in the employer's written practice, NOT Level I and II personnel should be reevaluated by the NOT Level III administering a practical examination. The practical examination should follow the format and guidelines described in Section 8.5.

11.0 Interrupted Service

11.1 The employer's written practice should include rules covering the types and duration of interrupted service that requires reexamination and recertification.

112 The written practice should specify the requirements for reexamination and/or recertification for the interrupted service.

12.0 Recertification

12.1 All levels of NOT personnel shall be recertified periodically in accordance with one of the following criteria:

12. I.I Evidence of continuing satisfactory technical performance.

12.l.2 Reexamination in those portions of the examinations in Section 8 deemed necessary by the employer's NOT Level III.

122 The recommended maximum recertification intervals are 5 years for all certification levels.

Certifications expire on the last day of the month of expiration.

123 When new techniques are added to the employer's written practice and the NOT Level III personnel is assigned to perform examinations using these new techniques, the NOT Level Ill personnel should receive applicable training, take applicable examinations and obtain the necessary experience, such that the NOT Level III meets the requirements of the new techniques in Table 6.3.1 A, prior to their next recertification date, in the applicable method.

13.0 Termination

13.1 The employer's certification shall be deemed revoked when employment is terminated.

132 An NOT Level I, Level II, or Level III whose certification has been terminated may be certified to the former NOT level by a new employer based on examination, as described in Section 8, provided all of the followin; conditions are met to the new employer's satisfaction:

13.2.1 The employee has proof of prior certification.

13.2.2 The employee was working in the capacity to which certified within six months of termination.

13.2.3 The employee is being recertified within six months of termination.

13.2.4 Prior to being examined for certification, employees not meeting the above requirements should receive additional training as deemed appropriate by the NOT Level III.

14.0 Reinstatement

14.1 An NDT Level I, Level II, or Level III whose certification has been…