SIST EN ISO 17635:2025
(Main)Non-destructive testing of welds - General rules for metallic materials (ISO 17635:2025)
Non-destructive testing of welds - General rules for metallic materials (ISO 17635:2025)
This document gives guidelines for the choice of non-destructive testing (NDT) methods for welds in metals and for the evaluation of the results for quality control purposes, based on quality requirements, material, weld thickness, welding process and extent of testing.
This document also specifies general rules and standards to be applied to the different types of testing, for the selection of the method, the techniques and the acceptance levels.
Acceptance levels cannot be a direct interpretation of the quality levels defined in ISO 5817 or ISO 10042. They are linked to the overall quality of the produced batch of welds.
The requirements specified in this document for acceptance levels for NDT conform with quality levels stated in ISO 5817 or ISO 10042 (moderate, intermediate, stringent) only on a general basis and not in detail for each indication.
Annex A gives correlations between quality levels, testing levels and acceptance levels for specific testing techniques.
Annex B gives an overview on specific testing techniques of standards linked to quality levels, acceptance levels and testing methods.
Zerstörungsfreie Prüfung von Schweißverbindungen - Allgemeine Regeln für metallische Werkstoffe (ISO 17635:2025)
Dieses Dokument gibt Leitlinien für die Auswahl zerstörungsfreier Prüfverfahren (ZfP) (NDT, en: non-destructive testing) für Schweißverbindungen in Metallen und für die Bewertung der Ergebnisse zum Zwecke der Qualitätskontrolle auf der Grundlage von Qualitätsanforderungen, Werkstoff, Schweißnahtdicke, Schweißprozess und Prüfumfang.
Dieses Dokument legt außerdem allgemeine Regeln und Normen fest, die auf die verschiedenen Prüfarten, für die Auswahl des Verfahrens, der Techniken und die Zulässigkeitsgrenzen anzuwenden sind.
Zulässigkeitsgrenzen können keine direkte Auslegung der Bewertungsgruppen nach ISO 5817 oder ISO 10042 sein. Sie stehen mit der Gesamtqualität der hergestellten Schweißnahtchargen im Zusammenhang.
Die in diesem Dokument festgelegten Anforderungen an die Zulässigkeitsgrenzen für die zerstörungsfreie Prüfung entsprechen den in ISO 5817 oder ISO 10042 genannten Bewertungsgruppen (mäßig, mittel, hoch) nur allgemein und nicht im Einzelnen für jede Anzeige.
In Anhang A sind die Zusammenhänge zwischen Bewertungsgruppen, Prüfklassen und Zulässigkeitsgrenzen für spezifische Prüftechniken angegeben.
Anhang B gibt einen Überblick über die Normen im Zusammenhang mit den Bewertungsgruppen, Zulässigkeitsgrenzen und Prüfverfahren für spezielle Prüftechniken.
Essais non destructifs des assemblages soudés - Règles générales pour les matériaux métalliques (ISO 17635:2025)
Le présent document donne des lignes directrices pour le choix des méthodes d'essai non destructif (END) des assemblages soudés dans les métaux et pour l'évaluation des résultats dans le cadre du contrôle qualité, en se fondant sur les exigences concernant la qualité, le matériau, l'épaisseur de soudure, le procédé de soudage et l'étendue de l'essai.
Le présent document spécifie également les règles générales et les normes applicables aux différents types d'essais, du point de vue de la méthodologie, des techniques et des niveaux d'acceptation.
Les niveaux d'acceptation ne peuvent pas être une interprétation directe des niveaux de qualité définis dans l'ISO 5817 ou l'ISO 10042. Ils sont liés à la qualité globale du lot d'assemblages soudés produit.
Les exigences relatives aux niveaux d'acceptation pour les END ne sont corrélées aux niveaux de qualité définis dans l'ISO 5817 ou l'ISO 10042 (modérés, moyens et élevés) que sur une base générale, et non pas en détail pour chaque indication.
L'Annexe A établit une corrélation entre les niveaux de qualité, les niveaux d'examen et les niveaux d'acceptation relatifs aux techniques spécifiques d'essai.
L'Annexe B donne une vue d'ensemble des techniques spécifiques d'essai de normes relatives aux niveaux de qualité, aux niveaux d'acceptation et aux méthodes d'essai.
Neporušitveno preskušanje zvarnih spojev - Splošna pravila za kovinske materiale (ISO 17635:2025)
Ta dokument podaja smernice za izbiro metod neporušitvenega preskušanja (NDT) zvarnih spojev v kovinah in vrednotenje rezultatov za namene nadzora kakovosti na podlagi zahtev glede kakovosti, materiala, debeline zvarnega spoja, postopka varjenja in obsega preskušanja. Ta dokument določa tudi splošna pravila in standarde, ki se uporabljajo za različne vrste preskušanja, za izbiro metode, tehnike in stopnje sprejemljivosti. Stopnje sprejemljivosti ne pomenijo neposredne razlage stopenj kakovosti, opredeljenih v standardu ISO 5817 ali ISO 10042. Te so povezane s splošno kakovostjo proizvedene serije zvarnih spojev. Zahteve v tem dokumentu v zvezi s stopnjami sprejemljivosti za neporušitveno preskušanje so v skladu s stopnjami kakovosti, navedenimi v standardu ISO 5817 ali ISO 10042 (zmerna, srednja, stroga), le na splošni ravni in ne podrobno za vsako indikacijo. V dodatku A so podane korelacije med stopnjami kakovosti, preskušanja in sprejemljivosti za posamezne tehnike preskušanja. Dodatek B vsebuje pregled posameznih tehnik preskušanja standardov, povezanih s stopnjami kakovosti in sprejemljivosti ter metodami preskušanja.
General Information
Relations
Overview
EN ISO 17635:2025 - Non-destructive testing of welds provides general rules and guidance for selecting and applying non-destructive testing (NDT) methods to welded joints in metallic materials. Published by CEN and identical to ISO 17635:2025, the standard helps link quality requirements, material type, weld thickness, welding process and testing extent to the appropriate NDT method and acceptance criteria for quality control.
Key topics and technical requirements
- Method selection criteria: Guidance for choosing NDT methods based on quality requirements, material, weld thickness, welding process and extent of testing (partial or full).
- Acceptance levels: Defines acceptance-level principles for NDT results. Acceptance levels are linked to overall batch quality and are not a direct one-to-one interpretation of ISO 5817 or ISO 10042 quality grades, although they align generally (moderate, intermediate, stringent).
- Rules and standards to apply: Annex A (normative) lists rules and standards to be applied to different testing types and techniques.
- Standards mapping: Annex B (informative) provides an overview of specific NDT and welding quality standards that relate to testing levels and acceptance criteria.
- Partial testing guidance: Annex C (informative) covers non-acceptable indications when only partial testing is performed and includes a flowchart.
- Personnel and organization: Requirements for personnel qualification, testing organization, and documentation (testing plan, written procedures, test reports).
- Technique updates: The 2025 edition adds modern ultrasonic techniques such as phased-array ultrasonic (UT-PA) for thin-walled steel components and total focusing method (UT-TFM), and updates relevant tables and references.
- Testing execution: Provisions on timing, conditions for testing, handling non-acceptable indications, and repaired welds.
Applications and users
EN ISO 17635:2025 is practical for:
- Welding engineers and designers specifying weld inspection strategy
- NDT inspectors and testing companies planning and performing weld examinations
- Quality assurance / quality control managers in fabrication, aerospace, oil & gas, power generation and construction
- Fabricators and welding contractors implementing inspection plans and acceptance criteria
- Certification bodies and auditors assessing NDT processes and personnel competency
Practical uses include preparing testing plans, selecting appropriate NDT techniques (UT, RT, MT, PT and advanced UT-PA/UT-TFM), defining documentation requirements and setting acceptance criteria consistent with production quality.
Related standards
- ISO 5817 - welding quality levels (moderate, intermediate, stringent)
- ISO 10042 - quality and acceptance criteria for welds using thermal cutting/welding (referenced for compatibility)
- Specific NDT technique standards (UT, RT, MT, PT) are cross-referenced in Annex B for detailed procedural requirements.
For implementers, EN ISO 17635:2025 is a central reference when developing weld inspection strategies that balance technical feasibility, cost and required product quality.
Frequently Asked Questions
SIST EN ISO 17635:2025 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Non-destructive testing of welds - General rules for metallic materials (ISO 17635:2025)". This standard covers: This document gives guidelines for the choice of non-destructive testing (NDT) methods for welds in metals and for the evaluation of the results for quality control purposes, based on quality requirements, material, weld thickness, welding process and extent of testing. This document also specifies general rules and standards to be applied to the different types of testing, for the selection of the method, the techniques and the acceptance levels. Acceptance levels cannot be a direct interpretation of the quality levels defined in ISO 5817 or ISO 10042. They are linked to the overall quality of the produced batch of welds. The requirements specified in this document for acceptance levels for NDT conform with quality levels stated in ISO 5817 or ISO 10042 (moderate, intermediate, stringent) only on a general basis and not in detail for each indication. Annex A gives correlations between quality levels, testing levels and acceptance levels for specific testing techniques. Annex B gives an overview on specific testing techniques of standards linked to quality levels, acceptance levels and testing methods.
This document gives guidelines for the choice of non-destructive testing (NDT) methods for welds in metals and for the evaluation of the results for quality control purposes, based on quality requirements, material, weld thickness, welding process and extent of testing. This document also specifies general rules and standards to be applied to the different types of testing, for the selection of the method, the techniques and the acceptance levels. Acceptance levels cannot be a direct interpretation of the quality levels defined in ISO 5817 or ISO 10042. They are linked to the overall quality of the produced batch of welds. The requirements specified in this document for acceptance levels for NDT conform with quality levels stated in ISO 5817 or ISO 10042 (moderate, intermediate, stringent) only on a general basis and not in detail for each indication. Annex A gives correlations between quality levels, testing levels and acceptance levels for specific testing techniques. Annex B gives an overview on specific testing techniques of standards linked to quality levels, acceptance levels and testing methods.
SIST EN ISO 17635:2025 is classified under the following ICS (International Classification for Standards) categories: 25.160.40 - Welded joints and welds. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 17635:2025 has the following relationships with other standards: It is inter standard links to SIST EN ISO 17635:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN ISO 17635:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Nadomešča:
SIST EN ISO 17635:2017
Neporušitveno preskušanje zvarnih spojev - Splošna pravila za kovinske materiale
(ISO 17635:2025)
Non-destructive testing of welds - General rules for metallic materials (ISO 17635:2025)
Zerstörungsfreie Prüfung von Schweißverbindungen - Allgemeine Regeln für metallische
Werkstoffe (ISO 17635:2025)
Essais non destructifs des assemblages soudés - Règles générales pour les matériaux
métalliques (ISO 17635:2025)
Ta slovenski standard je istoveten z: EN ISO 17635:2025
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 17635
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2025
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 17635:2016
English Version
Non-destructive testing of welds - General rules for
metallic materials (ISO 17635:2025)
Essais non destructifs des assemblages soudés - Règles Zerstörungsfreie Prüfung von Schweißverbindungen -
générales pour les matériaux métalliques (ISO Allgemeine Regeln für metallische Werkstoffe (ISO
17635:2025) 17635:2025)
This European Standard was approved by CEN on 9 February 2025.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17635:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 17635:2025) has been prepared by Technical Committee ISO/TC 44 "Welding
and allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding and allied
processes” the secretariat of which is held by AFNOR.
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 2025, and conflicting national standards shall
be withdrawn at the latest by October 2025.
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 17635:2016.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 17635:2025 has been approved by CEN as EN ISO 17635:2025 without any modification.
International
Standard
ISO 17635
Fourth edition
Non-destructive testing of welds —
2025-04
General rules for metallic materials
Essais non destructifs des assemblages soudés — Règles générales
pour les matériaux métalliques
Reference number
ISO 17635:2025(en) © ISO 2025
ISO 17635:2025(en)
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ii
ISO 17635:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 3
5 Limitations . 3
5.1 Stage of manufacture .3
5.2 Extent of testing .4
5.3 Materials .4
6 Personnel qualification . 4
7 Testing organization . 4
8 Documentation . 4
8.1 Documentation prior to testing .4
8.1.1 General .4
8.1.2 Written procedure .4
8.1.3 Testing plan .4
8.2 Documentation of testing .5
8.2.1 Documentation of individual testing .5
8.2.2 Test report .5
9 Selection of testing method(s) . 5
9.1 General .5
9.2 Butt- and T-joints with full penetration .6
9.3 Butt- and T-joints without full penetration and fillet welds .6
10 Performance of testing . 7
10.1 Determination of standards to be applied .7
10.2 Conditions for testing .7
10.3 Time of testing .7
10.4 Non-acceptable indications .7
10.5 Repaired welds .7
Annex A (normative) Rules and standards to be applied . 8
Annex B (informative) Overview of welding quality standards and NDT-standards .12
Annex C (informative) Non-acceptable indications in case of partial testing . 14
Bibliography .15
iii
ISO 17635:2025(en)
Foreword
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This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 5, Testing and inspection of welds, in collaboration with the European Committee for Standardization
(CEN) Technical Committee CEN/TC 121, Welding and allied processes, in accordance with the Agreement on
technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 17635:2016), which has been technically
revised.
The main changes are as follows:
— references updated;
— phased-array ultrasonic technique (UT-PA) for thin-walled steel components added;
— ultrasonic technique using total focusing technique (UT-TFM) added;
— Table 1 and Table 3 modified;
— Annex C reintroduced based on a version in ISO 17635:2010 and a flowchart added.
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ISO 17635:2025(en)
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v
ISO 17635:2025(en)
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vi
International Standard ISO 17635:2025(en)
Non-destructive testing of welds — General rules for metallic
materials
1 Scope
This document gives guidelines for the choice of non-destructive testing (NDT) methods for welds in metals
and for the evaluation of the results for quality control purposes, based on quality requirements, material,
weld thickness, welding process and extent of testing.
This document also specifies general rules and standards to be applied to the different types of testing, for
the selection of the method, the techniques and the acceptance levels.
Acceptance levels cannot be a direct interpretation of the quality levels defined in ISO 5817 or ISO 10042.
They are linked to the overall quality of the produced batch of welds.
The requirements specified in this document for acceptance levels for NDT conform with quality levels
stated in ISO 5817 or ISO 10042 (moderate, intermediate, stringent) only on a general basis and not in detail
for each indication.
Annex A gives correlations between quality levels, testing levels and acceptance levels for specific testing
techniques.
Annex B gives an overview on specific testing techniques of standards linked to quality levels, acceptance
levels and testing methods.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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 3452-1, Non-destructive testing — Penetrant testing — Part 1: General principles
ISO 4761:2021, Non-destructive testing of welds — Phased array ultrasonic testing (UT-PA) for thin-walled steel
components — Acceptance levels
ISO 5817:2023
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SIST EN ISO 17635:2025は、金属材料の溶接に関する非破壊検査（NDT）の一般的な規則を提供する重要な標準です。この標準の範囲は、金属溶接の非破壊検査方法の選択、および質の管理目的のための結果評価に関する指針を含んでいます。具体的には、品質要求、材料、溶接厚さ、溶接プロセス、検査の範囲に基づいて、適切な非破壊検査方法を選択するための指針が示されています。 この標準の強みは、その包括的なアプローチにあります。異なる検査手法に適用される一般的な規則と基準が規定されており、方法の選択、技術、受入れレベルに関しても具体的に指示されています。また、受入れレベルはISO 5817やISO 10042で定義された品質レベルと直接解釈できるものではなく、製造された溶接の全体的な品質に関連している点が重要です。これは、実際の溶接品質を適切に評価するための柔軟性を持たせています。 附録Aは、特定の検査技術に対する品質レベル、検査レベル、受入れレベルの相関関係を提供しており、実用的な参考となります。これにより、利用者は異なる技術に基づいた評価を行う際に有用な情報を得ることができます。附録Bは、品質レベル、受入れレベル、および検査方法に関連する標準の特定の検査技術の概要を示しており、実践的なガイドラインとしても機能します。 全体として、SIST EN ISO 17635:2025は、金属材料の溶接における非破壊検査の適用において、厳格な基準と柔軟性を兼ね備えており、品質管理に貢献する非常に重要な文書と言えるでしょう。非破壊検査の方法選択における基盤を提供し、溶接の品質評価の信頼性を高めるための要素が満載されています。
SIST EN ISO 17635:2025 표준은 금속 재료의 용접 비파괴 검사(NDT)에 대한 기본 규정을 제공하는 중요한 문서입니다. 이 표준은 품질 관리 목적을 위한 용접의 NDT 방법 선택과 결과 평가에 대한 지침을 명확하게 제시하고 있습니다. 본 문서의 범위는 품질 요구사항, 재료, 용접 두께, 용접 프로세스 및 검사 범위에 따라 달라지는 NDT 기술의 선택을 포함합니다. 이 표준의 강점 중 하나는 다양한 검사 방법에 대해 적용할 일반 규칙 및 기준을 명시하고 있어, 사용자가 적절한 NDT 방법과 기술, 수용 기준을 선택할 수 있도록 돕는다는 점입니다. 수용 기준은 ISO 5817 또는 ISO 10042에서 정의된 품질 수준을 직접 해석하는 것이 아니라, 생산된 용접 배치의 전반적인 품질과 연관되어 있습니다. 또한, 문서에서 명시된 NDT 수용 수준은 ISO 5817 또는 ISO 10042에서 언급된 품질 수준(보통, 중간, 엄격)과 일반적인 기준으로 일치하지만, 각 지시에 대한 세부 사항은 포함되어 있지 않습니다. 부록 A에서는 특정 검사 기술에 대한 품질 수준, 검사 수준 및 수용 수준 간의 상관관계를 제공합니다. 이는 검사 기술 선택 시 참고할 수 있는 유용한 정보로, 품질 보증에 기여합니다. 부록 B에서는 품질 수준, 수용 수준 및 검사 방법과 연결된 표준의 특정 검사 기술에 대한 개요를 제공합니다. 이러한 구성은 SIST EN ISO 17635:2025 표준이 용접 비파괴 검사 분야에서 갖는 중요성과 관련성을 더욱 강조하며, 사용자의 선택을 용이하게 하고, 품질 관리 기준을 높이는 데 중요한 역할을 합니다.
La norme SIST EN ISO 17635:2025 représente un cadre essentiel pour le testing non destructif (NDT) des soudures, offrant des lignes directrices précises qui garantissent la qualité des matériaux métalliques. Son champ d'application couvre le choix des méthodes de NDT appropriées pour les soudures, ainsi que l'évaluation des résultats dans un contexte de contrôle qualité. Cela s'avère crucial dans les secteurs où la sécurité et la performance sont primordiales. Parmi ses points forts, la norme établit des règles générales applicables à différents types de tests, ce qui facilite la sélection des méthodes et des techniques les plus adaptées selon les exigences de qualité, le type de matériau, l'épaisseur de la soudure et l'étendue du testing. Ce cadre normatif permet d'harmoniser les pratiques de testing au sein de l'industrie, assurant ainsi une compréhension et une mise en œuvre cohérentes des processus de contrôle qualité. La précision dans l'établissement des niveaux d'acceptation est une autre caractéristique majeure de cette norme. Bien que les niveaux d'acceptation ne puissent pas être interprétés de manière directe à partir des niveaux de qualité définis dans les normes ISO 5817 ou ISO 10042, ils sont alignés sur la qualité globale du lot de soudures produit. Cela souligne l'importance d'une approche intégrée dans l'évaluation de la qualité, reliant les résultats de NDT aux exigences de performance du produit. Les annexes fournies dans le document, notamment l’Annexe A et l’Annexe B, renforcent la portée de la norme en fournissant des corrélations et un aperçu des techniques de test spécifiques. Ainsi, les utilisateurs peuvent bénéficier d'une compréhension approfondie des relations entre les niveaux de qualité, les niveaux de test et les niveaux d'acceptation, facilitant l'application pratique des règles de la norme. En résumé, la SIST EN ISO 17635:2025 est une norme pertinente, avec une portée bien définie et des forces qui en font un outil indispensable pour le testing non destructif des soudures métalliques. Elle contribue à une meilleure gestion de la qualité dans l'industrie du soudage, garantissant que les produits finis répondent aux exigences les plus élevées en matière de sécurité et d'efficacité.
The SIST EN ISO 17635:2025 standard provides essential guidelines for non-destructive testing (NDT) of welds in metallic materials, making it a critical resource for quality control in welding processes. Its comprehensive scope addresses the selection of NDT methods based on crucial factors such as material type, weld thickness, welding process, and testing extent, facilitating informed decision-making for professionals in the field. One of the significant strengths of this standard is its systematic approach to defining general rules and standards applicable to various types of NDT. It outlines the procedures for selecting testing methods, techniques, and setting appropriate acceptance levels. This clarity helps ensure consistency and reliability in evaluating weld quality, which is paramount in industries where structural integrity is essential. The document also highlights that acceptance levels cannot be directly equated with the quality levels outlined in ISO 5817 or ISO 10042. Instead, it connects these levels more holistically to the overall quality of the produced welds. This nuanced understanding reinforces the importance of context in quality assessments and helps users avoid potential misinterpretations that could arise from strict adherence to one standard without considering others. Annex A serves as a valuable resource by providing correlations among quality levels, testing levels, and acceptance levels for various testing techniques. This section enhances the usability of the standard, offering practical insights into how different testing parameters interact, thereby aiding professionals in tailoring their approach to specific projects. Furthermore, Annex B codifies an overview of specific testing techniques, linking them with corresponding quality and acceptance levels. This structured representation assists in the quick identification of relevant methods, supporting practitioners in adhering to best practices and meeting industry standards effortlessly. Overall, SIST EN ISO 17635:2025 stands out as a pivotal standard in the realm of non-destructive testing, offering robust guidance on the evaluation of welds in metallic materials. Its relevance extends across various industries, ensuring that quality control measures can be accurately applied to welding processes, ultimately enhancing both safety and reliability in fabricated structures.
Die Norm SIST EN ISO 17635:2025 bietet umfassende Richtlinien zur Auswahl von zerstörungsfreien Prüfmethoden (NDT) für Schweißnähte in metallischen Materialien und zur Bewertung der Ergebnisse im Rahmen der Qualitätskontrolle. Dies geschieht unter Berücksichtigung von Qualitätsanforderungen, Materialbeschaffenheit, Schweißdicke, Schweißverfahren und dem Umfang der Prüfungen. Eine der Stärken dieser Norm ist die detaillierte Spezifizierung allgemeiner Regeln und Standards für die verschiedenen Arten von Prüfungen. Diese Klarheit ermöglicht es den Anwendern, die geeignete Methode sowie die passenden Techniken und Akzeptanzniveaus auszuwählen. Der Bezug zu den Akzeptanzniveaus ist besonders von Bedeutung, da diese nicht direkt aus den in ISO 5817 oder ISO 10042 definierten Qualitätsstufen interpretiert werden können. Stattdessen sind sie eng mit der Gesamtqualität der hergestellten SchweißCharge verbunden, was die Norm für die Praxis sehr relevant macht. Des Weiteren stellt die Norm in Anhang A Korrelationen zwischen Qualitätsniveaus, Prüfungsstufen und Akzeptanzniveaus für spezifische Prüftechniken bereit, was die Anwendung der Norm in der industriellen Praxis weiter erleichtert. Anhang B liefert zudem einen Überblick über spezifische Prüftechniken in Verbindung mit den festgelegten Qualitätsniveaus, Akzeptanzstufen und Prüfmethoden. Insgesamt bietet SIST EN ISO 17635:2025 eine unverzichtbare Grundlage für die Implementierung und das Verständnis von zerstörungsfreien Prüfungen in der Schweißtechnik, indem sie sowohl die Auswahl der Methoden als auch die Beurteilung der Ergebnisse klar strukturiert und definiert.
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