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 - Zulässigkeitsgrenzen (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)

Ta dokument določa stopnje sprejemljivosti za tehniko ultrazvočnega preskušanja s faznim krmiljenjem (UT-PA) zvarnih spojev s popolno penetracijo pri malolegiranih in/ali drobnozrnatih jeklih z debelino sten od 3,2 do 8 mm, ki ustrezajo stopnjam sprejemljivosti iz standarda ISO 5817.
Te stopnje sprejemljivosti se uporabljajo za indikacije, zaznane v skladu s standardom ISO 20601.

General Information

Status
Published
Publication Date
20-Dec-2022
Technical Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
21-Dec-2022
Due Date
23-Oct-2024
Completion Date
21-Dec-2022

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SLOVENSKI STANDARD
SIST EN ISO 4761:2023
01-marec-2023
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)
Zerstörungsfreie Prüfung von Schweißverbindungen - Phased-Array-Ultraschallprüfung
(UT‑PA) dünnwandiger Stahlkomponenten - Zulässigkeitsgrenzen (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: EN ISO 4761:2022
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
SIST EN ISO 4761:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 4761:2023

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SIST EN ISO 4761:2023


EN ISO 4761
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2022
EUROPÄISCHE NORM
ICS 25.160.40
English Version

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 - Zerstörungsfreie Prüfung von Schweißverbindungen -
Technique ultrasons multi-éléments (UT-PA) pour les Phased-Array-Ultraschallprüfung (UT-PA)
composants en acier à paroi mince - Niveaux dünnwandiger Stahlkomponenten -
d'acceptation (ISO 4761:2022) Zulässigkeitsgrenzen (ISO 4761:2022)
This European Standard was approved by CEN on 20 December 2022.

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, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4761:2022 E
worldwide for CEN national Members.

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SIST EN ISO 4761:2023
EN ISO 4761:2022 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 4761:2023
EN ISO 4761:2022 (E)
European foreword
The text of ISO 4761:2022 has been prepared by Technical Committee ISO/TC 44 "Welding and allied
processes” of the International Organization for Standardization (ISO) and has been taken over as
EN ISO 4761:2022 by Technical Committee CEN/TC 121 “Welding and allied processes” the secretariat
of which is held by DIN.
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 2023, and conflicting national standards shall be
withdrawn at the latest by June 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
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.
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 4761:2022 has been approved by CEN as EN ISO 4761:2022 without any modification.

3

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SIST EN ISO 4761:2023

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SIST EN ISO 4761:2023
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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SIST EN ISO 4761:2023
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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2022 – All rights reserved

---------------------- Page: 8 ----------------------
SIST EN ISO 4761:2023
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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SIST EN ISO 4761:2023
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
committee has been established has the right to be represented on that committee. International
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
...

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.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 4761:2022

---------------------- Page: 2 ----------------------
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

---------------------- Page: 3 ----------------------
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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2022 – All rights reserved

---------------------- Page: 4 ----------------------
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

---------------------- Page: 5 ----------------------
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
committee has been established has the right to be represented on that committee. International
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).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
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.
iv
  © ISO 2022 – All rights reserved

---------------------- Page: 6 ----------------------
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
...

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