EN ISO 10893-7:2019

SLOVENSKI STANDARD
01-maj-2019
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SIST EN ISO 10893-7:2011
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Non-destructive testing of steel tubes - Part 7: Digital radiographic testing of the weld
seam of welded steel tubes for the detection of imperfections (ISO 10893-7:2019)
Zerstörungsfreie Prüfung von Stahlrohren - Teil 7: Digitale Durchstrahlungsprüfung der
Schweißnaht geschweißter Stahlrohre zum Nachweis von Unvollkommenheiten (ISO
10893-7:2019)
Essais non destructifs des tubes en acier - Partie 7: Contrôle radiographique numérique
du cordon de soudure des tubes en acier soudés pour la détection des imperfections
(ISO 10893-7:2019)
Ta slovenski standard je istoveten z: EN ISO 10893-7:2019
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
77.040.20 Neporušitveno preskušanje Non-destructive testing of
kovin metals
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 10893-7
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2019
EUROPÄISCHE NORM
ICS 23.040.10; 77.040.20; 77.140.75 Supersedes EN ISO 10893-7:2011
English Version
Non-destructive testing of steel tubes - Part 7: Digital
radiographic testing of the weld seam of welded steel
tubes for the detection of imperfections (ISO 10893-
7:2019)
Essais non destructifs des tubes en acier - Partie 7: Zerstörungsfreie Prüfung von Stahlrohren - Teil 7:
Contrôle par radiographie numérique du cordon de Digitale Durchstrahlungsprüfung der Schweißnaht
soudure des tubes en acier soudés pour la détection geschweißter Stahlrohre zum Nachweis von
des imperfections (ISO 10893-7:2019) Unvollkommenheiten (ISO 10893-7:2018)
This European Standard was approved by CEN on 29 December 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10893-7:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 10893-7:2019) has been prepared by Technical Committee ISO/TC 17 "Steel" in
collaboration with Technical Committee CEN/TC 459/SC 10 “Steel tubes, and iron and steel fittings” the
secretariat of which is held by UNI.
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 September 2019, and conflicting national standards
shall be withdrawn at the latest by September 2019.
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 10893-7:2011.
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 10893-7:2019 has been approved by CEN as EN ISO 10893-7:2019 without any
modification.
INTERNATIONAL ISO
STANDARD 10893-7
Second edition
2019-02
Non-destructive testing of steel
tubes —
Part 7:
Digital radiographic testing of the
weld seam of welded steel tubes for
the detection of imperfections
Essais non destructifs des tubes en acier —
Partie 7: Contrôle par radiographie numérique du cordon de soudure
des tubes en acier soudés pour la détection des imperfections
Reference number
ISO 10893-7:2019(E)
©
ISO 2019
ISO 10893-7:2019(E)
© ISO 2019
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Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 10893-7:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements . 3
5 Test equipment. 3
6 Test method . 4
7 Image quality . 6
8 Image processing .11
9 Classification of indications .12
10 Acceptance limits .12
11 Acceptance .13
12 Image storage and display .13
13 Test report .13
Annex A (informative) Examples of distribution of imperfections .15
Bibliography .17
ISO 10893-7:2019(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 17, Steel, Subcommittee SC 19, Technical
delivery conditions for steel tubes for pressure purposes.
This second edition cancels and replaces the first edition (ISO 10893-7:2011), which has been technically
revised. The main changes compared with the previous edition are as follows:
a)  some terms and definitions from ISO 17636-2 have been included;
b)  a safety warning for X and gamma rays has been added at the end of Clause 4;
c)  Figure 2 has been aligned with ISO 17636-1 up to 1 000 kV;
d)  the symbols for mathematical formula have been changed in accordance with the ISO/IEC Directives;
e)  it has been clarified in 4.7 when the detector size is smaller than the applicable weld length;
f)  “contact technique” has been deleted from the test method in Clause 6;
g)  a reference to ISO 17636-2 has been added in 6.8 for additional details related to spatial resolution;
h)  the requirements for duplex wire IQI position have been added in Clause 7;
i)  a reference to ISO 17636-2 for the calibration of DDAs has been added in Clause 8;
j)  Figure 4 and the figures in Annex A have been revised.
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.
iv © ISO 2019 – All rights reserved

ISO 10893-7:2019(E)
Introduction
Digital radiography has been used for the testing of longitudinal weld seams in submerged arc-welded
steel tubes for some years. Digital radiography can be automated, and is considered to be more
environmentally friendly than film-based radiographic techniques.
Digital radiography maintains the levels of security and availability afforded by X-ray film testing,
which have been in place for many years. Images can be made available in a fraction of the time
previously taken by film-based techniques, and usually at a lower exposure level and increased detector
unsharpness when compared to film.
The storage and handling of digital images maintain the same levels of integrity available from film-
based techniques, yet gain all the benefits associated wit
...