SIST EN ISO 10893-7:2011
(Main)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 10893-7:2011)
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 10893-7:2011)
This part of ISO 10893 specifies the requirements for digital radiographic X-ray testing by either computed radiography (CR) or radiography with digital detector arrays (DDA) of the longitudinal or helical weld seams of automatic fusion arc-welded steel tubes for the detection of imperfections. This part of ISO 10893 specifies acceptance levels and calibration procedures. This part of ISO 10893 can also be applicable to the testing of circular hollow sections.
Zerstörungsfreie Prüfung von Stahlrohren - Teil 7: Digitalisierte Durchstrahlungsprüfung der Schweißnaht geschweißter Stahlrohre zum Nachweis von Unregelmäßigkeiten (ISO 10893-7:2011)
Dieser Teil der ISO 10893 legt die Anforderun¬gen an die digitale Durchstrahlungsprüfung von automatisiert hergestellten Längs- oder Spiralnähten lichtbogenschmelzgeschweißte Stahlrohre fest, die zum Nachweis von Unvollkommenheiten entweder mittels Computer-Radiographie (CR) oder mittels digitaler Detektorarrays (DDA) durchgeführt werden. Dieser Teil der ISO 10893 legt die Zulässigkeitsgrenzen und die Kalibrierverfahren fest.
Dieses Dokument kann auch für die Prüfung von kreisförmigen Hohlprofilen angewendet werden.
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 10893-7:2011)
L'ISO 10893-7:2011 spécifie les exigences relatives au contrôle radiographique numérique par rayons X des cordons de soudure longitudinaux ou hélicoïdaux des tubes en acier soudés en automatique par fusion à l'arc pour la détection des imperfections, soit par radiographie numérisée (CR) soit par radiographie avec des mosaïques de détecteurs numériques (DDA). L'ISO 10893-7:2011 spécifie les niveaux d'acceptation et les procédures d'étalonnage.
Elle est également applicable au contrôle des profils creux circulaires.
Neporušitveno preskušanje jeklenih cevi - 7. del: Ugotavljanje napak varov pri jeklenih ceveh, obločno varjenih pod praškom, z digitalno radiografsko preiskavo (ISO 10893-7:2011)
Ta del ISO 10893 določa zahteve za ugotavljanje napak vzdolžnih ali heličnih varov pri avtomatsko talilno obločno varjenih jeklenih ceveh z digitalno radiografsko rentgensko preiskavo z računalniško radiografijo (CR) ali radiografijo z digitalnimi detektorskimi nizi (DDA). Ta del ISO 10893 določa stopnje sprejemljivosti in kalibracijske postopke. Ta del ISO 10893 lahko velja tudi za preskušanje krožnih votlih delov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 10893-7:2011
01-november-2011
1HSRUXãLWYHQRSUHVNXãDQMHMHNOHQLKFHYLGHO 8JRWDYOMDQMHQDSDNYDURYSUL
MHNOHQLKFHYHKREORþQRYDUMHQLKSRGSUDãNRP]GLJLWDOQRUDGLRJUDIVNRSUHLVNDYR
,62
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 10893-7:2011)
Zerstörungsfreie Prüfung von Stahlrohren - Teil 7: Digitalisierte Durchstrahlungsprüfung
der Schweißnaht geschweißter Stahlrohre zum Nachweis von Unregelmäßigkeiten (ISO
10893-7:2011)
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 10893-7:2011)
Ta slovenski standard je istoveten z: EN ISO 10893-7:2011
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
77.040.20 Neporušitveno preskušanje Non-destructive testing of
kovin metals
SIST EN ISO 10893-7:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 10893-7:2011
---------------------- Page: 2 ----------------------
SIST EN ISO 10893-7:2011
EUROPEAN STANDARD
EN ISO 10893-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2011
ICS 23.040.10; 77.040.20; 77.140.75
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 10893-7:2011)
Essais non destructifs des tubes en acier - Partie 7: Zerstörungsfreie Prüfung von Stahlrohren - Teil 7: Digitale
Contrôle radiographique numérique du cordon de soudure Durchstrahlungsprüfung der Schweißnaht geschweißter
des tubes en acier soudés pour la détection des Stahlrohre zum Nachweis von Unvollkommenheiten (ISO
imperfections (ISO 10893-7:2011) 10893-7:2011)
This European Standard was approved by CEN on 10 December 2010.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10893-7:2011: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 10893-7:2011
EN ISO 10893-7:2011 (E)
Contents Page
Foreword .3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 10893-7:2011
EN ISO 10893-7:2011 (E)
Foreword
This document (EN ISO 10893-7:2011) has been prepared by Technical Committee ISO/TC 17 "Steel" in
collaboration with Technical Committee ECISS/TC 110 “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 October 2011, and conflicting national standards shall be withdrawn at
the latest by October 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 10893-7:2011 has been approved by CEN as a EN ISO 10893-7:2011 without any
modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 10893-7:2011
---------------------- Page: 6 ----------------------
SIST EN ISO 10893-7:2011
INTERNATIONAL ISO
STANDARD 10893-7
First edition
2011-04-01
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 radiographique numérique du cordon de soudure
des tubes en acier soudés pour la détection des imperfections
Reference number
ISO 10893-7:2011(E)
©
ISO 2011
---------------------- Page: 7 ----------------------
SIST EN ISO 10893-7:2011
ISO 10893-7:2011(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
COPYRIGHT PROTECTED DOCUMENT
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 10893-7:2011
ISO 10893-7:2011(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 General requirements .2
5 Equipment .2
6 Test method .3
7 Image quality.5
8 Image processing.10
9 Classification of indications.11
10 Acceptance limits.11
11 Acceptance .11
12 Image storage and display .12
13 Test report.12
Annex A (informative) Examples of distribution of imperfections.14
Bibliography.17
© ISO 2011 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 10893-7:2011
ISO 10893-7:2011(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 10893-7 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 19, Technical
delivery conditions for steel tubes for pressure purposes.
ISO 10893 consists of the following parts, under the general title Non-destructive testing of steel tubes:
⎯ Part 1: Automated electromagnetic testing of seamless and welded (except submerged arc-welded) steel
tubes for the verification of hydraulic leaktightness
⎯ Part 2: Automated eddy current testing of seamless and welded (except submerged arc-welded) steel
tubes for the detection of imperfections
⎯ Part 3: Automated full peripheral flux leakage testing of seamless and welded (except submerged arc-
welded) ferromagnetic steel tubes for the detection of longitudinal and/or transverse imperfections
⎯ Part 4: Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface
imperfections
⎯ Part 5: Magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of
surface imperfections
⎯ Part 6: Radiographic testing of the weld seam of welded steel tubes for the detection of imperfections
⎯ Part 7: Digital radiographic testing of the weld seam of welded steel tubes for the detection of
imperfections
⎯ Part 8: Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar
imperfections
⎯ Part 9: Automated ultrasonic testing for the detection of laminar imperfections in strip/plate used for the
manufacture of welded steel tubes
⎯ Part 10: Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-
welded) steel tubes for the detection of longitudinal and/or transverse imperfections
⎯ Part 11: Automated ultrasonic testing of the weld seam of welded steel tubes for the detection of
longitudinal and/or transverse imperfections
⎯ Part 12: Automated full peripheral ultrasonic thickness testing of seamless and welded (except
submerged arc-welded) steel tubes
iv © ISO 2011 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 10893-7:2011
ISO 10893-7:2011(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 with comprehensive data storage and retrieval systems.
Imaging systems are constantly under development, and an important aspect of this part of ISO 10893 is to
qualify the use of those alternative systems currently available. This part of ISO 10893 describes the steps
required to deliver these benefits.
© ISO 2011 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 10893-7:2011
---------------------- Page: 12 ----------------------
SIST EN ISO 10893-7:2011
INTERNATIONAL STANDARD ISO 10893-7:2011(E)
Non-destructive testing of steel tubes —
Part 7:
Digital radiographic testing of the weld seam of welded steel
tubes for the detection of imperfections
1 Scope
This part of ISO 10893 specifies the requirements for digital radiographic X-ray testing by either computed
radiography (CR) or radiography with digital detector arrays (DDA) of the longitudinal or helical weld seams of
automatic fusion arc-welded steel tubes for the detection of imperfections. This part of ISO 10893 specifies
acceptance levels and calibration procedures.
This part of ISO 10893 can also be applicable to the testing of circular hollow sections.
2 Normative references
The following referenced documents are indispensable for the application 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 5576, Non-destructive testing — Industrial X-ray and gamma-ray radiology — Vocabulary
ISO 9712, Non-destructive testing — Qualification and certification of personnel
ISO 11484, Steel products — Employer's qualification system for non-destructive testing (NDT) personnel
ISO 17636, Non-destructive testing of welds — Radiographic testing of fusion-welded joints
ISO 19232-1, Non-destructive testing — Image quality of radiographs — Part 1: Image quality indicators (wire
type) — Determination of image quality value
ISO 19232-2, Non-destructive testing — Image quality of radiographs — Part 2: Image quality indicators
(step/hole type) — Determination of image quality value
ISO 19232-5, Non-destructive testing — Image quality of radiographs — Part 5: Image quality indicators
(duplex wire type) — Determination of image unsharpness value
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5576 and ISO 11484 and the
following apply.
3.1
tube
hollow long product open at both ends, of any cross-sectional shape
3.2
welded tube
tube made by forming a hollow profile from a flat product and welding adjacent edges together, and which
after welding can be further processed, either hot or cold, into its final dimensions
© ISO 2011 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 10893-7:2011
ISO 10893-7:2011(E)
3.3
manufacturer
organization that manufactures products in accordance with the relevant standard(s) and declares the
compliance of the delivered products with all applicable provisions of the relevant standard(s)
3.4
agreement
contractual arrangement between the manufacturer and purchaser at the time of enquiry and order
4 General requirements
4.1 Unless otherwise specified by the product standard or agreed on by the purchaser and manufacturer, a
radiographic inspection inspection shall be carried out on welded tubes after completion of all the primary
manufacturing process operations (rolling, heat treating, cold and hot working, sizing and primary
straightening, etc.).
4.2 This inspection shall be carried out by trained operators qualified in accordance with ISO 9712,
ISO 11484 or equivalent. Competent personnel, nominated by the manufacturer, shall supervise all inspection.
In the case of third-party inspection, this shall be agreed on between the purchaser and manufacturer.
The operating authorization issued by the employer shall be according to a written procedure. Non-destructive
testing (NDT) operations shall be authorized by a level 3 NDT individual approved by the employer.
NOTE The definition of levels 1, 2 and 3 can be found in appropriate standards, e.g. ISO 9712 and ISO 11484.
4.3 The tubes under test shall be sufficiently straight and free of foreign matter as to ensure the validity of
the test. The surfaces of the weld seam and adjacent parent metal shall be sufficiently free of such foreign
matter and surface irregularities which would interfere with the interpretation of the radiographs.
Surface grinding is permitted in order to achieve an acceptable surface finish.
4.4 In cases where the weld reinforcement is removed, markers, usually in the form of lead arrows, shall be
placed on each side of the weld such that its position can be identified on the radiographic image. Alternatively,
an integrated automatic positioning system may be used to identify the position of the weld.
4.5 Identification symbols, usually in the form of lead letters, shall be placed on each section of the weld
seam radiograph such that the projection of these symbols appears in each radiographic image to ensure
unequivocal identification of the section. Alternatively, an integrated automatic positioning system may be
used to identify the position of each radiographic image along the pipe weld.
4.6 Markings shall be displayed on the recorded radiographic images to provide reference points for the
accurate relocation of the position of each radiograph. Alternatively, the automated measured image position
may be displayed on the digital image viewing screen by software for accurate position relocation.
4.7 When carrying out radiography on a continuous length of a weld, the pipe or pipe wall shall pass
between the X-ray tube and detector at a speed which is sufficient to allow accurate defect detection, or the
pipe shall move in start-stop mode and digital radiographs shall be taken when the pipe is not moving.
5 Equipment
The following digital imaging methods can be used in replacement of radiographic film:
a) computed radiography (CR) with storage phosphor imaging plates (e.g. EN 14784-1 and EN 14784-2);
b) radiology with digital detector arrays (e.g. ASTM E2597);
c) digital radioscopy with image integration (e.g. EN 13068-1, EN 13068-2 and EN 13068-3).
2 © ISO 2011 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 10893-7:2011
ISO 10893-7:2011(E)
6 Test method
6.1 The weld seam shall be tested by a digital radiographic technique, corresponding to 5 a) to 5 c).
6.2 Two image quality classes, A and B, conforming to ISO 17636, shall be specified as:
⎯ class A: radiographic examination technique with standard sensitivity;
⎯ class B: radiographic technique with enhanced sensitivity.
NOTE Image quality class A is used for most applications. Image quality class B is intended for applications where
increased sensitivity is required to reveal all the imperfections being detected.
The required image quality class should be stated in the relevant product standard.
6.3 The digital image disp
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.