oSIST prEN ISO 4761:2022

Non-destructive testing of welds - Phased array ultrasonic testing (UT-PA) for thin-walled steel components - Acceptance levels (ISO 4761:2022)

This document specifies acceptance levels for the phased array ultrasonic testing technique (UT-PA) of full-penetration welds in low-alloy and/or fine-grained steels in the wall thickness range from 3,2 mm to 8 mm which correspond to the quality levels of ISO 5817.
These acceptance levels are applicable to indications detected according to ISO 20601.

Zerstörungsfreie Prüfung von Schweißverbindungen - Phased-Array-Ultraschallprüfung (UT‑PA) dünnwandiger Stahlkomponenten - Akzeptanzniveaus (ISO 4761:2022)

Essais non destructifs des assemblages soudés - Technique ultrasons multi-éléments (UT-PA) pour les composants en acier à paroi mince - Niveaux d’acceptation (ISO 4761:2022)

Neporušitveno preskušanje zvarnih spojev - Ultrazvočno preskušanje s faznim krmiljenjem (UT-PA) tankostenskih jeklenih delov - Stopnje sprejemljivosti (ISO 4761:2022)

General Information

• Status: Not Published
• Public Enquiry End Date: 01-Oct-2022
• ICS: 25.160.40 - Welded joints and welds
• Technical Committee: VAR - Welding
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 10-Jul-2022
• Due Date: 27-Nov-2022
• Completion Date: 28-Oct-2022
• Ref Project: prEN ISO 4761 - Non-destructive testing of welds - Phased array ultrasonic testing (UT-PA) for thin-walled steel components - Acceptance levels (ISO 4761:2022)

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 4761:2022
01-september-2022
Neporušitveno preskušanje zvarnih spojev - Ultrazvočno preskušanje s faznim
krmiljenjem (UT-PA) tankostenskih jeklenih delov - Stopnje sprejemljivosti (ISO
4761:2022)

Non-destructive testing of welds - Phased array ultrasonic testing (UT-PA) for thin-walled

steel components - Acceptance levels (ISO 4761:2022)

Essais non destructifs des assemblages soudés - Technique ultrasons multi-éléments

(UT-PA) pour les composants en acier à paroi mince - Niveaux d’acceptation (ISO
4761:2022)
Ta slovenski standard je istoveten z: prEN ISO 4761
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
oSIST prEN ISO 4761:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 4761:2022
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oSIST prEN ISO 4761:2022
INTERNATIONAL ISO
STANDARD 4761
First edition
2022-01
Non-destructive testing of welds —
Phased array ultrasonic testing (UT-
PA) for thin-walled steel components
— Acceptance levels
Essais non destructifs des assemblages soudés — Technique ultrasons
multi-éléments (UT-PA) pour les composants en acier à paroi mince
— Niveaux d’acceptation
Reference number
ISO 4761:2022(E)
© ISO 2022
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oSIST prEN ISO 4761:2022
ISO 4761:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
© ISO 2022 – All rights reserved
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oSIST prEN ISO 4761:2022
ISO 4761:2022(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

4 Symbols .......................................................................................................................................................................................................................... 1

5 Sensitivity setting and levels ..................................................................................................................................................................2

6 Acceptance levels.................................................................................................................................................................................................2

7 Evaluation of indications ............................................................................................................................................................................ 2

8 Acceptance criteria for two-sided testing ................................................................................................................................ 3

8.1 General ........................................................................................................................................................................................................... 3

8.2 Longitudinal indications ................................................................................................................................................................ 3

8.3 Transverse indications .................................................................................................................................................................... 5

8.4 Cumulative length of indications ........................................................................................................................................... 5

9 Acceptance criteria for single-sided testing .......................................................................................................................... 6

9.1 General ........................................................................................................................................................................................................... 6

9.2 Longitudinal indications ................................................................................................................................................................ 6

9.3 Transverse indications .................................................................................................................................................................... 7

9.4 Cumulative length of indications ........................................................................................................................................... 7

Bibliography ................................................................................................................................................................................................................................ 8

iii
© ISO 2022 – All rights reserved
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oSIST prEN ISO 4761:2022
ISO 4761:2022(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

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organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

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constitute an endorsement.

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expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,

Subcommittee SC 5, Testing and inspection of welds.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.

Official interpretations of ISO/TC 44 documents, where they exist, are available from this page:

https://committee.iso.org/sites/tc44/home/interpretation.html.
© ISO 2022 – All rights reserved
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oSIST prEN ISO 4761:2022
INTERNATIONAL STANDARD ISO 4761:2022(E)
Non-destructive testing of welds — Phased array ultrasonic
testing (UT-PA) for thin-walled steel components —
Acceptance levels
1 Scope

This document specifies acceptance levels for the phased array ultrasonic testing technique (UT-PA) of

full-penetration welds in low-alloy and/or fine-grained steels in the wall thickness range from 3,2 mm

to 8 mm which correspond to the quality levels of ISO 5817.

These acceptance levels are applicable to indications detected according to ISO 20601.

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 docume
...