OSIST prEN 12517:2004
(Main)Non destructive examination of welds - Radiographic examination of welded joints in steel - Acceptance level
Non destructive examination of welds - Radiographic examination of welded joints in steel - Acceptance level
This standard specifies acceptance levels for indications from imperfections in steel butt welds detected by radiography . If agreed, the acceptance levels may be applied to other types of welds or materials. The acceptance levels may be related to welding standards, application standards, specifications or codes. Such a relationship is shown in EN 12062 for EN 25817. This standard assumes that the radiographic examination has been carried out in accordance with EN 1435. When assessing whether a weld meets the requirements specified for a weld quality level, the sizes of imperfections permitted by standards are compared with the dimensions of indications revealed by a radiograph made of the weld.
Zerstörungsfreie Prüfung von Schweißverbindungen - Durchstrahlungsprüfung von Schweißverbindungen - Zulässigkeitsgrenzen
Contrôle non destructif des assemblages soudés - Contrôle par radiographie des assemblages soudés en acier - Niveaux d'acceptation
Non destructive examination of welds - Radiographic examination of welded joints in steel - Acceptance level
General Information
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Standards Content (Sample)
SLOVENSKI OSIST prEN 12517:2004
PREDSTANDARD
oct 2004
Non destructive examination of welds - Radiographic examination of welded joints
in steel - Acceptance level
ICS 25.160.40 Referenčna številka
OSIST prEN 12517:2004(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD
DRAFT
prEN 12517
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2004
ICS Will supersede EN 12517:1998
English version
Non destructive examination of welds - Radiographic
examination of welded joints in steel - Acceptance level
Contrôle non destructif des assemblages soudés - Contrôle Zerstörungsfreie Prüfung von Schweißverbindungen -
par radiographie des assemblages soudés en acier - Durchstrahlungsprüfung von Schweißverbindungen -
Niveaux d'acceptation Zulässigkeitsgrenzen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 121.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12517:2004: E
worldwide for CEN national Members.
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prEN 12517:2004 (E)
Contents
Foreword.3
1 Scope .4
2 Normative references .4
3 Radiographic technique.4
4 General.5
5 Acceptance levels.5
Annex A (informative) Guide to the limitations of radiographic testing.8
A.1 Volumetric imperfections in butt welds.8
A.2 Cracks in butt welds.8
A.3 Planar imperfections in butt welds .8
Annex B (informative) Examples for determination of percent (%) of imperfections .9
Annex C (normative) Sum of acceptable areas .11
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prEN 12517:2004 (E)
Foreword
This document (prEN 12517:2004) has been prepared by Technical Committee CEN/TC 121 “Welding”, the
secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12517:1998
This document has been prepared under a mandate given to CEN by the European Commission and the European
Free Trade Association, and supports essential requirements of EU Directive(s).
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prEN 12517:2004 (E)
1 Scope
This standard specifies acceptance levels for indications from imperfections in steel butt welds detected by
radiographic testing . If agreed, the acceptance levels may be applied to other types of welds or materials.
The acceptance levels may be related to welding standards, application standards, specifications or codes. Such a
relationship is shown in EN 12062 for EN ISO 5817.
This standard assumes that the radiographic testing has been carried out in accordance with EN 1435.
When assessing whether a weld meets the requirements specified for a weld quality level, the sizes of
imperfections permitted by standards are compared with the dimensions of indications revealed by a radiograph
made of the weld.
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.
EN 970, Non-destructive examination of fusion welds — Visual examination.
EN 1435, Non-destructive examination of welds — Radiographic examination of welded joints.
EN 12062, Non-destructive examination of welds — General rules for metallic materials.
EN ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) —
Quality levels for imperfections (ISO 5817:2003).
EN ISO 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic materials —
Part 1: Fusion welding (ISO 6520-1:1998).
3 Radiographic technique
Depending on the weld quality level, radiographic technique A or B in accordance with EN 1435 is used as shown
in table 1.
Table 1 – Radiographic examination
Quality levels in accordance Examination techniques and Acceptance levels in
with EN ISO 5817 classes in accordance with accordance with
EN 1435 EN 12517
B B 1
a
C 2
B
D A 3
a
However, the minimum number of exposure for circumferencial weld testing shall correspond
to the requirements of class A of EN 1435.
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prEN 12517:2004 (E)
4 General
Welded joints should be visually tested and evaluated in accordance with EN 970 before radiographic testing.
The acceptance levels in this document are basically valid for evaluation of imperfections which cannot be detected
and evaluated by visual testing. Surface imperfections (such as undercut and excessive penetration, surface
damage, weld spatter, etc.) which due to object geometry cannot be evaluated, but where the interpreter suspects
the EN ISO 5817 quality levels are not fulfilled, shall be subject to more specific testing.
When quantification of undercut and/or excessive penetration by radiographic testing is required, specific
procedures using test exposures may be applied in order to established a basis for approximate quantification in
accordance with the requirements of EN ISO 5
...
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