EN ISO 11666:2018
(Main)Non-destructive testing of welds - Ultrasonic testing - Acceptance levels (ISO 11666:2018)
Non-destructive testing of welds - Ultrasonic testing - Acceptance levels (ISO 11666:2018)
ISO 11666:2018 specifies two ultrasonic acceptance levels known as acceptance level 2 (AL 2) and acceptance level 3 (AL 3) for full penetration welded joints in ferritic steels, which correspond to ISO 5817:2014, quality levels B and C. An acceptance level corresponding to ISO 5817:2014, quality level D is not included in this document, as ultrasonic testing is generally not requested for this weld quality.
These acceptance levels are applicable to testing carried out in accordance with ISO 17640.
ISO 11666:2018 applies to the testing of full penetration ferritic steel welds, with thicknesses from 8 mm to 100 mm. It can also be used for other types of welds, materials and thicknesses, provided the tests have been performed with necessary consideration of the geometry and acoustic properties of the component, and an adequate sensitivity can be employed to enable the acceptance levels of this document to be applied. The nominal frequency of probes used in this document is between 2 MHz and 5 MHz, unless attenuation or requirements for higher resolution call for other frequencies. It is important to consider the use of these acceptance levels in conjunction with frequencies outside this range carefully.
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung - Zulässigkeitsgrenzen (ISO 11666:2018)
Dieses Dokument legt zwei Zulässigkeitsgrenzen für die Ultraschallprüfung, bekannt als Zulässigkeits-grenze 2 (AL 2) und Zulässigkeitsgrenze 3 (AL 3), von voll durchgeschweißten Schweißnähten in ferritischen Stählen fest, die den Bewertungsgruppen B und C von ISO 5817:2014 entsprechen. Eine Zulässigkeitsgrenze entsprechend Bewertungsgruppe D von ISO 5817:2014 wurde in dieses Dokument nicht aufgenommen, da eine Ultraschallprüfung für Schweißnähte dieser Bewertungsgruppe im Allgemeinen nicht verlangt wird.
Diese Zulässigkeitsgrenzen sind anwendbar für Prüfungen, die nach ISO 17640 durchgeführt werden.
Dieses Dokument ist anwendbar für die Prüfung von voll Schweißnähten im Wanddickenbereich von 8 mm bis 100 mm. Es kann auch für andere Schweißnahttypen, andere Werkstoffe und Wanddicken angewendet werden, vorausgesetzt, die Prüfungen wurden unter entsprechender Berücksichtigung von Geometrie und akustischen Eigenschaften des Bauteils durchgeführt und es kann eine Prüfempfindlichkeit erreicht werden, mit der die Zulässigkeitsgrenzen dieses Dokuments angewendet werden können. Die Nennfrequenz für die nach diesem Dokument verwendeten Prüfköpfe liegt bei 2 MHz bis 5 MHz, sofern nicht die Schall-schwächung oder Anforderungen an eine erhöhte Auflösung andere Frequenzen erfordern. Die Anwendung dieser Zulässigkeitsgrenzen bei Prüfungen mit Frequenzen außerhalb des genannten Bereichs bedarf zuvor einer kritischen Betrachtung.
Essais non destructifs des assemblages soudés - Contrôle par ultrasons - Niveaux d'acceptation (ISO 11666:2018)
ISO 11666:2018 spécifie deux niveaux d'acceptation, appélés niveau d'acceptation 2 (AL 2) et niveau d'acceptation 3 (AL 3) pour le contrôle par ultrasons de joints en aciers ferritiques soudés à pleine pénétration, qui correspondent aux niveaux de qualité B et C de l'ISO 5817:2014. Il n'a pas été inclus de niveau d'acceptation correspondant au niveau de qualité D de l'ISO 5817:2014 dans le présent document car le contrôle par ultrasons n'est généralement pas demandé pour cette qualité de soudure.
Ces niveaux d'acceptation sont applicables aux contrôles effectués conformément à l'ISO 17640.
ISO 11666:2018 est applicable au contrôle de joints soudés à pleine pénétration en aciers ferritiques, d'épaisseurs allant de 8 mm à 100 mm. Il peut également être utilisé pour d'autres types de soudures, de matériaux et d'épaisseurs, dans la mesure où les contrôles ont été effectués en tenant compte de la géométrie et des caractéristiques acoustiques de l'élément soudé, et où une sensibilité appropriée peut être utilisée pour permettre l'application des niveaux d'acceptation du présent document. La fréquence nominale des palpeurs utilisés dans le présent document est comprise entre 2 MHz et 5 MHz, à moins que l'atténuation ou les exigences d'une meilleure résolution ne justifient une autre fréquence. Il est important d'étudier avec soin l'adoption de ces niveaux d'acceptation en utilisant des fréquences situées en dehors de cette plage.
Neporušitveno preskušanje zvarnih spojev - Ultrazvočno preskušanje - Stopnje sprejemljivosti (ISO 11666:2018)
Ta dokument določa dve stopnji ultrazvočne sprejemljivosti, tj. stopnjo sprejemljivosti 2 (AL 2) in stopnjo sprejemljivosti 3 (AL 3) za zvarne spoje s popolno prevaritvijo pri feritnih jeklih, ki ustrezata ravnem kakovosti B in C po standardu ISO 5817:2014. Raven kakovosti D, ki ustreza standardu ISO 5817:2014, v tem dokumentu ni vključena, saj za to kakovost zvarov ultrazvočno preskušanje običajno ni potrebno.
Te stopnje sprejemljivosti veljajo za preskušanje, izvedeno v skladu s standardom ISO 17640. Ta dokument se uporablja za preskušanje zvarov s popolno prevaritvijo pri feritnih jeklih debeline od 8 mm do 100 mm. Uporablja se lahko tudi za druge vrste zvarov ter druge materiale in debeline, če so bili izvedeni preskusi z ustreznim upoštevanjem geometrijskih in akustičnih lastnosti posamezne komponente ter je mogoče uporabiti zadostno občutljivost, ki omogoča uporabo stopenj sprejemljivosti iz tega dokumenta. Nazivna frekvenca sond, uporabljenih v tem dokumentu, je med 2 MHz
in 5 MHz, razen če so zaradi slabljenja oziroma potreb po višji ločljivosti potrebne drugačne frekvence. Pri uporabi teh stopenj sprejemljivosti v povezavi s frekvencami zunaj tega obsega je potrebna previdnost.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2018
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SIST EN ISO 11666:2011
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Non-destructive testing of welds - Ultrasonic testing - Acceptance levels (ISO
11666:2018)
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung -
Zulässigkeitsgrenzen (ISO 11666:2018)
Essais non destructifs des assemblages soudés - Contrôle par ultrasons - Niveaux
d'acceptation (ISO 11666:2018)
Ta slovenski standard je istoveten z: EN ISO 11666:2018
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 11666
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2018
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 11666:2010
English Version
Non-destructive testing of welds - Ultrasonic testing -
Acceptance levels (ISO 11666:2018)
Essais non destructifs des assemblages soudés - Zerstörungsfreie Prüfung von Schweißverbindungen -
Contrôle par ultrasons - Niveaux d'acceptation (ISO Ultraschallprüfung - Zulässigkeitsgrenzen (ISO
11666:2018) 11666:2018)
This European Standard was approved by CEN on 21 January 2018.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11666:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 11666:2018) has been prepared by Technical Committee ISO/TC 44 " Welding
and allied processes" in collaboration with 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 August 2018, and conflicting national standards shall
be withdrawn at the latest by August 2018.
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.
This document supersedes EN ISO 11666:2010.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 11666:2018 has been approved by CEN as EN ISO 11666:2018 without any modification.
INTERNATIONAL ISO
STANDARD 11666
Second edition
2018-01
Non-destructive testing of welds —
Ultrasonic testing — Acceptance levels
Essais non destructifs des assemblages soudés — Contrôle par
ultrasons — Niveaux d'acceptation
Reference number
ISO 11666:2018(E)
©
ISO 2018
ISO 11666:2018(E)
© ISO 2018
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
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Published in Switzerland
ii © ISO 2018 – All rights reserved
ISO 11666:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Determination of discontinuity length . 2
5 Sensitivity setting and levels . 2
6 Acceptance levels . 2
6.1 General . 2
6.2 Indications from longitudinal discontinuities . 3
6.3 Indications from transverse discontinuities . 3
6.4 Grouping of discontinuities . 3
6.5 Length of acceptable discontinuities . 4
Annex A (normative) Levels . 6
Annex B (normative) Fixed-amplitude level technique .17
ISO 11666:2018(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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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 on 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 the following
URL: 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.
This second edition cancels and replaces the first edition (ISO 11666:2010), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— this document has been editorially revised;
— the normative reference to ISO 5817 has been dated;
— Clause 5 and 6.5 have been described in more detail.
Requests for official interpretations of any aspect of this document should be directed to the Secretariat
of ISO/TC 44/SC 5 via your national standards body. A complete listing of these bodies can be found at
www .iso .org.
iv © ISO 2018 – All rights reserved
INTERNATIONAL STANDARD ISO 11666:2018(E)
Non-destructive testing of welds — Ultrasonic testing —
Acceptance levels
1 Scope
This document specifies two ultrasonic acceptance levels known as acceptance level 2 (AL 2) and
acceptance level 3 (AL 3) for full penetration welded joints in ferritic steels, which correspond to
ISO 5817:2014, quality levels B and C. An acceptance level corresponding to ISO 5817:2014, quality
level D is not included in this document, as ultrasonic testing is generally not requested for this weld
quality.
These acceptance levels are applicable to testing carried out in accordance with ISO 17640.
This document applies to the testing of full penetration ferritic steel welds, with thicknesses from
8 mm to 100 mm. It can also be used for other types of welds, materials and thicknesses, provided the
tests have been performed with necessary consideration of the geometry and acoustic properties of
the component, and an adequate sensitivity can be employed to enable the acceptance levels of this
document to be applied. The nominal frequency of probes used in this document is between 2 MHz
and 5 MHz, unless attenuation or requirements for higher resolution call for other frequencies. It is
important to consider the use of these acceptance levels in conjunction with frequencies outside this
range carefully.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 5577, Non-destructive testing — Ultrasonic testing — Vocabulary
ISO 5817:2014, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding
excluded) — Quality levels for imperfections
ISO 17635, Non-destructive testing of welds — General rules for metallic materials
ISO 17640, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and
assessment
ISO 23279, Non-destructive testing of welds — Ultrasonic testing — Characterization of discontinuities
in welds
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5577 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
ISO 11666:2018(E)
4 Determination of discontinuity length
The length of a discontinuity shall be determined by measuring the distance along the length over which
the echo amplitude is above the evaluation level, using the fixed-amplitude level technique specified in
Annex B.
5 Sensitivity setting and levels
The sensitivity setting shall be performed by one of the following techniques. For sensitivity setting
and the subsequent testing, the same technique shall be used.
a) Technique 1: based on 3 mm diameter side-drilled holes.
b) Technique 2: based on distance-gain-size
...
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