SIST EN 15617:2009

Non-destructive testing of welds - Time-of-flight diffraction technique (TOFD) - Acceptance levels

This standard specifies the acceptance criteria for the "Time Of Flight Diffraction" technique (ToFD) of welded joints in ferritic steels, where full penetration is required (simple geometry?s like butt welds). The ToFD technique is proven for fine grain ferritic steels. The acceptance criteria are applicable to examinations carried out in accordance with NVN-ENV 583-6. They may, however be applied in conjunction with other rules, where at least the same level of examination quality is described, provided it is agreed upon by the parties involved. This standard is applicable to the examination of welded joints in fine grain ferritic steels, where full penetration is required with wall thickness from 6 mm up to 300 mm. It may also be used for other types of weld, materials and wall thicknesses, provided the examination has been performed with due consideration of geometry and acoustical properties of the component, and the expected capability of detection is proven to be in relationship with this standard (validation). The acceptance criteria shall be related to the examination techniques as defined in NVN-ENV 583-6. The results shall not be subdivided into planar and non-planar indications. Only indications described in terms of length, height and depth are considered. (cracks, lack of fusion, lack of root penetration, slag etc.) Single diffraction signals are considered separately (gas, porosity etc).

Zerstörungsfreie Prüfung von Schweißverbindungen - Beugungslaufzeittechnik (TOFD) - Zulässigkeitsgrenzen

Diese Europäische Norm legt Zulässigkeitsgrenzen für die Prüfung von durchgeschweißten Verbindungen von ferritischen Stählen zwischen 6 mm und 300 mm mittels Beugungslaufzeittechnik (TOFD), die den Qualitäts¬anforderungen in EN ISO 5817 entsprechen, fest.
Diese Zulässigkeitsgrenzen sind anwendbar auf Anzeigen, die nach CEN/TS 14751 eingestuft wurden.

Essais non destructifs des assemblages soudés - Technique de diffraction des temps de vol (méthode TOFD) - Niveaux d'acceptation

La présente Norme européenne spécifie les niveaux d’acceptation pour la technique de diffraction des temps
de vol (méthode TOFD) utilisée sur des joints soudés à pleine pénétration pratiqués sur des aciers ferritiques
d’épaisseur comprise entre 6 mm et 300 mm, correspondant aux niveaux de qualité énoncés dans
l’EN ISO 5817.
Ces niveaux d’acceptation sont applicables à des indications classifiées conformément à la Spécification
technique CEN/TS 14751.

Neporušitvene preiskave zvarov - Metoda ultrazvočne difrakcije za odkrivanje in ugotavljanje velikosti nepopolnosti (TOFD) - Stopnje sprejemljivosti

General Information

• Status: Withdrawn
• Publication Date: 02-Apr-2009
• Withdrawal Date: 03-Nov-2013
• ICS: 25.160.40 - Welded joints and welds
• Technical Committee: VAR - Welding
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 30-Oct-2013
• Due Date: 22-Nov-2013
• Completion Date: 04-Nov-2013
• Ref Project: EN 15617:2009 - Non-destructive testing of welds - Time-of-flight diffraction technique (TOFD) - Acceptance levels

Relations

• Replaced By: SIST EN ISO 15626:2013 - Non-destructive testing of welds - Time-of-flight diffraction technique (TOFD) - Acceptance levels (ISO 15626:2011)
• Effective Date: 01-Dec-2013

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VWLZerstörungsfreie Prüfung von Schweißverbindungen - Beugungslaufzeittechnik (TOFD) - ZulässigkeitsgrenzenEssais non destructifs des assemblages soudés - Technique de diffraction des temps de vol (méthode TOFD) - Niveaux d'acceptationNon-destructive testing of welds - Time-of-flight diffraction technique (TOFD) - Acceptance levels25.160.40Varjeni spoji in variWelded jointsICS:Ta slovenski standard je istoveten z:EN 15617:2009SIST EN 15617:2009en,fr01-maj-2009SIST EN 15617:2009SLOVENSKI
STANDARD



SIST EN 15617:2009



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15617March 2009ICS 25.160.40 English VersionNon-destructive testing of welds - Time-of-flight diffractiontechnique (TOFD) - Acceptance levelsEssais non destructifs des assemblages soudés -Technique de diffraction des temps de vol (méthode TOFD)- Niveaux d'acceptationZerstörungsfreie Prüfung von Schweißverbindungen -Beugungslaufzeittechnik (TOFD) - ZulässigkeitsgrenzenThis European Standard was approved by CEN on 17 January 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15617:2009: ESIST EN 15617:2009



EN 15617:2009 (E) 2 Contents Page Foreword .31Scope .42Normative references .43Symbols, terms and definitions .43.1Symbols .43.2Terms and definitions .44Relation between quality levels and acceptance levels .45Definition and determination of length and height .55.1General .55.2Determination of length .55.2.1General .55.2.2Length sizing of elongated straight indications .55.2.3Length sizing of elongated curved indications .65.3Determination of height .65.3.1General .65.3.2Surface-breaking discontinuities .75.3.3Embedded discontinuities .86Acceptance levels .86.1General .86.2Indications from single discontinuities .96.2.1Acceptance level 1 .96.2.2Acceptance level 2 . 106.2.3Acceptance level 3 . 116.3Total length of indications . 126.4Grouping of indications . 126.5Point-like indications . 12Bibliography . 14 SIST EN 15617:2009



EN 15617:2009 (E) 3 Foreword This document (EN 15617:2009) has been prepared by Technical Committee CEN/TC 121 “Welding”, 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 September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. 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, 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. SIST EN 15617:2009



EN 15617:2009 (E) 4
1 Scope This European standard specifies acceptance levels for the time-of-flight diffraction technique (TOFD) of full penetration welds in ferritic steels from 6 mm up to 300 mm thickness which correspond to the quality levels of EN ISO 5817. These acceptance levels are applicable to indications classified in accordance with CEN/TS 14751. 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. CEN/TS 14751, Welding — Use of time-of-flight diffraction technique (TOFD) for examination of welds EN ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections (ISO 5817:2003, corrected version:2005, including Technical Corrigendum 1:2006) 3 Symbols, terms and definitions 3.1 Symbols h height of an indication (see Figures 1, 2 and 3) l length of an indication (see Figures 1, 2 and 3) t nominal wall thickness in accordance with construction drawing or dimension table
(see Figures 1, 2 and 3) 3.2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.2.1 embedded discontinuity discontinuity within the volume of the material, separated from the surfaces 3.2.2 surface-breaking discontinuity discontinuity connected to the near (contact) surface or far (reflecting) surface 4 Relation between quality levels and acceptance levels Three different acceptance levels are defined. The relat
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