ICS 25.160.40
Zerstörungsfreie Prüfung von Schweißverbindungen –
Ultraschallprüfung von Schweißverbindungen –
Zulässigkeitsgrenzen (enthält Änderung A1:2002)European Standard EN 1712:1997+Amendment A1:2002 has the status of a DIN Standard.
A comma is used as the decimal marker.
National foreword
This standard has been prepared by CEN/TC 121 ‘Welding’ (Secretariat: Denmark), SC 5 ‘Non-destructive tests of welds’.
The responsible German body involved in its preparation was the Norm enausschuss Materialprüfung (Materials Testing Standards Committee), Technical Committee Ultraschallprüfung .
Amendments
This standard differs from the September 1997 edition in that it has been editorially revised and Annex ZA has been included.
Previous edition
DIN EN 1712: 1997-09.
Ref.No.DIN EN 1712:2002-09English price group 08Sales No.1108
01.03
DEUTSCHE NORM September 2002
EN 1712{EN comprises 13 pages.
©No part of this standard may be reproduced without the prior permission of
DIN Deutsches Institut für Normung e.V., Berlin. Beuth Verlag GmbH , 10772Berlin, Germany,
has the exclusive right of sale for German Standards (DIN-Normen).Non-destructive testing of welds Ultrasonic testing of welded joints Acceptance levels (includes Amendment A1:2002)English version of
DIN EN 1712:1997+A1:2002
Supersedes September 1997 edition.
English version
ICS 25.160.40Non-destructive testing of welds
Ultrasonic testing of welded joints
Acceptance levels
(includes Amendment A1:2002)
©2002.CEN –All rights of exploitation in any form and by any means
reserved worldwide for CEN national members.Ref. No. EN 1712:1997+A1:2002E
Zerstörungsfreie Prüfung von Schweißverbindungen –Ultraschall-prüfung von Schweißverbindungen –Zulässigkeitsgrenzen (enthält Änderung A1:2002)
This European Standard was approved by CEN on 1997-07-24 and Amendment
A1 on 2002-05-01.
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 stand-
ards may be obtained on application to the M anagement Centre or to any
CEN member.
The European Standards exist 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 Management Centre has
the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, the Czech
Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
editoriallyLuxembourg, M alta, the Netherlands, Norway, Portugal, Spain, Sweden,
Switzerland, and the United Kingdom.
EN
1712
September 1997
Management Centre: rue de Stassart 36, B-1050 Brussels
European Committee for Standardization
Comité Européen de Normalisation
Europäisches Komitee für Normung
|ÈÉË
Contrôle non destructif des
assemblages soudés –Contrôle
par ultrasons des assemblages
soudés –Niveaux d’acceptation
(amendement A1:2002 inclus)+A1
May 2002Supersedes EN 1712:1997.
Page2
EN1712:1997+A1:2002
Contents
Page Foreword to EN 1712:1997 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Foreword to EN 1712:1997/A1:2002 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3Evaluations of indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3.1General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3.2Sensitivity setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.3Reference level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.4Evaluation level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.5Recording level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.6Measurement of indication length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4Acceptance levels . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4.1General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4.2Longitudinal indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.3Transverse indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.4Indications detected by the tandem technique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.5Linearly aligned and grouped indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.6Cumulative length of acceptable indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5Examination report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Annex A(informative)Acceptance levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Annex B(normative)Fixed amplitude level technique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Annex ZA(informative)Clauses of this European Standard addressing essential requirements
or other provisions of EU directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Foreword to EN 1712:1997
This European Standard has been prepared by Technical Committee CEN/TC 121 ‘Welding’, the Secretariat of which is held by DS.
This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the relevant EU Directives. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by February 1998 at the latest.
In accordance with the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.
Foreword to EN 1712:1997/A1:2002
This amendment to EN 1712:1997 has been prepared by Technical Committee CEN/TC 121 ‘Welding’, the Secretariat of which is held by DS.
This amendment has been prepared under a mandate given to CEN by the European Commission an
d the European Free Trade Association, and supports essential requirements of the relevant EU Directives.
For relationship with these directives, see Annex ZA.
This amendment shall be given the status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by November 2002 at the latest.
In accordance with the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.
Page3
EN1712:1997+A1:2002
This European Standard specifies ultrasonic acceptance levels, 2 and 3, for full penetration welded joints in ferritic steels, which correspond to quality levels B and C of EN25817. Other acceptance levels can be used by specification.
An acceptance level corresponding to level D of EN25817 has not been included in this standard as ultrasonic testing is not recommended for this weld quality.
These acceptance levels are applicable to testing carried out in accordance with the standards referred to in EN12062. They can, however, be applied in conjunction with other rules, where the same types of reference reflectors for sensitivity setting are used, provided it is agreed between the contracting parties.
The standard is applicable to the testing of full penetration ferritic steel welds, with thicknesses from 8mm up to 100mm. It can also be used for other types of welds, materials and thicknesses above 100mm, provided the testings have been performed with necessary consideration of the geometry and acoustical properties of the component and an adequate sensitivity can be employed to enable the acceptance levels of this standard to be applied. The nominal frequency
of probes used in this European Standard is between 2MHz and 5MHz unless attenuation or requirem
ents for higher resolution call for another frequency. The use of these acceptance levels
in conjunction with frequencies outside this range needs to be considered carefully.
The evaluation of indications shall be performed on indications detected by testing performed in accordance with EN1714.

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