EN 12799:2000/A1:2003
(Amendment)Brazing - Non-destructive examination of brazed joints
Brazing - Non-destructive examination of brazed joints
This European Standard describes non-destructive examination procedures and test piece types necessary to perform the tests on brazed joints. The non-destructive examination methods described are as follows: a) visual examination (see clause 4); b) ultrasonic examination (see clause 5); c) radiographic examination (see clause 6); d) penetrant examination (see clause 7); e) leak testing (see clause 8); f) proof testing (see clause 9); g) thermography (see clause 10). The brazed joints to which these tests are applied can either be test samples manufactured to obtain brazed joint design data, or manufactured as part of the approval testing of a brazing procedure, or parts of a brazed assembly. The type of test piece described for each test can be quoted or incorporated in engineering application standards that deal with brazed assemblies. This European Standard does not recommend the number of samples to be tested or the repeat tests allowed. Neither does it specify methods of sampling brazed joints, except to give guidance regarding the precautions necessary, nor does it comment on the acceptance criteria applicable to any of the tests. No attempt is made to define which test or tests, if any , should be applied in any situation. This is a matter to be established before any particular method of test is selected. The methods of non-destructive examination are not associated with any particular type of brazed assembly but lay down the general principles of the types of testing described. It is emphasised that a satisfactory examination method can only be developed and used after taking into account all the relevant factors regarding the equipment to be used and the characteristics of the test piece being examined.
Hartlöten - Zerstörungsfreie Prüfung von Hartlötverbindungen
Diese Europäische Norm beschreibt zerstörungsfreie Prüfverfahren und Prüfstückarten, die zur Durchführung von Prüfungen an Hartlötverbindungen notwendig sind. Die folgenden zerstörungsfreien Prüfverfahren sind beschrieben: a) Sichtprüfung (siehe Abschnitt 4); b) Ultraschallprüfung (siehe Abschnitt 5); c) Durchstrahlungsprüfung (siehe Abschnitt 6); d) Eindringprüfung (siehe Abschnitt 7);
e) Dichtheitsprüfung (siehe Abschnitt 8); f) Überdruckprüfung (siehe Abschnitt 9); g) Thermographie (siehe Abschnitt 10). Die Hartlötverbindungen, an denen diese Prüfungen durchgeführt werden, können entweder als Prüfstück hergestellt sein, um für Hartlötverbindungen Konstruktionsdaten zu ermitteln, oder Teil einer Hartlötkonstruktion sein. Auf die Art des Prüfstücks, das für jede Prüfung beschrieben wird, kann Bezug genommen werden, oder wird in den technischen Anwendungsnormen, die sich auf die Hartlötkonstruktionen beziehen, eingearbeitet. Diese Europäische Norm empfiehlt nicht die Anzahl der zu untersuchenden Prüfstücke oder der zulässigen Wiederholungsprüfungen festzulegen. Sie legt bis auf einen aufgeführten Leitfaden bezüglich der notwendigen
Vorsichtsmaßnahmen weder die Art der Probenahme aus den hartgelöteten Verbindungen fest, noch erläutert sie die Bewertungsmerkmale, die für jede der Prüfungen anzuwenden sind. Es wurde kein Versuch unternommen, festzulegen, welche Prüfung oder Prüfungen in welcher Situation angewendet werden sollten. Dies ist, bevor eine spezielle Prüfmethode ausgewalht wird, zu vereinbaren. Die Verfahren der zerstörungsfreien Prüfung beziehen sich nicht auf eine bestimmte Art hartgelöteter Konstruktionen, sie legen jedoch die allgemeinen Grundsätze der beschriebenen Prüfungsarten fest...(Abgeschnitten)
Brasage fort - Contrôles non destructifs des assemblages réalisés par brasage fort
La présente norme européenne décrit des procédures de contrôle non destructif et des types de pièces d'essai nécessaires pour effectuer les contrôles sur assemblages réalisés par brasage fort (assemblages brasés). Les méthodes de contrôle non destructif décrites sont les suivantes : a) contrôle visuel (voir article 4) ; b) contrôle par ultrasons (voir article 5) ; c) contrôle par radiographie (voir article 6) ;
d) contrôle par ressuage (voir article 7) ; e) contrôle d'étanchéité (voir article 8) ; f) épreuve de surcharge (voir article 9) ; g) thermographie (voir article 10). Les assemblages brasés sur lesquels ces contrôles sont effectués peuvent être soit fabriqués spécialement afin
d'obtenir des informations sur la conception de l'assemblage réalisé par brasage fort, soit provenir d'un assemblage réalisé spécialement pour la qualification d'un mode opératoire de brasage fort, soit être prélevés sur un assemblage brasé. Le type de pièce d'essai décrit pour chaque contrôle peut être mentionné ou incorporé dans des normes d'application qui traitent des assemblages brasés. La présente norme européenne ne donne pas de recommandations concernant le nombre d'échantillons à contrôler ou concernant les contre-essais autorisés. Elle ne spécifie pas de méthodes d'échantillonnage des assemblages brasés, bien qu'elle donne des précisions sur les précautions à prendre à ce sujet, et ne formule pas de commentaires sur les critères d'acceptation applicables aux contrôles. Elle n'a pas pour objet de définir les contrôles qu'il convient d'effectuer en fonction des situations particulières. Ce point doit être établi avant la
sélection d'une méthode d'essais particulière. Les méthodes de contrôle non destructif ne sont pas associées à un type particulier d'assemblage brasé, mais elles posent les principes généraux des méthodes de contrôle décrites...(Tronqué)
Trdo spajkanje - Neporušitvene preiskave spajkanih spojev
General Information
- Status
- Published
- Publication Date
- 09-Dec-2003
- Withdrawal Date
- 29-Jun-2004
- Technical Committee
- CEN/TC 121 - Welding
- Drafting Committee
- CEN/TC 121/WG 20 - Brazing
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 10-Dec-2003
- Completion Date
- 10-Dec-2003
Relations
- Effective Date
- 22-Dec-2008
Overview
EN 12799:2000/A1:2003 is a European Standard developed by CEN that establishes comprehensive guidelines for the non-destructive examination (NDE) of brazed joints. This standard addresses a range of NDE methods applicable to brazed assemblies, including test samples and production parts, ensuring the integrity and quality of brazed joints without causing damage. It serves as a critical reference for engineers and quality assurance professionals involved in brazing processes and inspection activities. The standard emphasizes adaptable examination principles tailored to the equipment and characteristics of the test pieces, rather than prescribing mandatory testing frequencies or acceptance criteria.
Key Topics
The standard details several non-destructive examination methods used for brazed joints:
Visual Examination
Initial inspection technique focused on detecting surface anomalies and visible defects by direct observation.Ultrasonic Examination
Uses ultrasonic waves to detect internal flaws or discontinuities within the brazed joint, providing insight into joint integrity.Radiographic Examination
Employs X-ray or gamma-ray imaging to reveal internal structural flaws not visible on the surface.Penetrant Examination
Application of liquid penetrants to surface flaws to make them visible under ultraviolet or visible light.Leak Testing
Detects leaks in brazed assemblies by pressure or vacuum methods, ensuring seal integrity.Proof Testing
Involves applying controlled mechanical or hydraulic stress to validate the strength and durability of joints.Thermography
Uses infrared imaging to identify thermal anomalies indicative of defects in the brazed joint.
EN 12799:2000/A1:2003 also clarifies that it does not mandate specific sample sizes, acceptance criteria, or test selection but provides guidance to support the development of appropriate testing strategies based on project needs.
Applications
This standard is essential for professionals in industries where brazing is a critical joining technique, including:
Aerospace and Automotive Manufacturing
Ensures brazed joints meet stringent safety and performance standards through reliable NDE techniques.HVAC and Refrigeration Systems
Verifies leak-tightness and structural integrity of brazed heat exchangers and piping.Electronics and Electrical Engineering
Confirms quality of brazed electrical contacts and components where defect-free joints enhance reliability.Industrial Fabrication and Maintenance
Used in quality control and routine inspection of brazed assemblies to prevent failures and extend service life.
By applying the procedures in EN 12799, manufacturers and inspectors can enhance product safety and reliability while optimizing testing efficiency.
Related Standards
Professionals utilizing EN 12799:2000/A1:2003 may also find the following standards relevant:
- EN ISO 17672 – Brazing - Classification, design, and quality requirements for brazed joints
- EN 13445 – Unfired pressure vessels - Design and fabrication, including brazed joint considerations
- ISO 9712 – Non-destructive testing - Qualification and certification of NDT personnel
- EN ISO 9934 – Non-destructive testing - Magnetic particle testing, applicable as complementary NDE in brazing quality assessment
These related standards complement EN 12799 by providing additional detail on brazed joint design, quality standards, and inspector qualification-supporting a comprehensive brazing quality management system.
Keywords: EN 12799, brazing non-destructive examination, brazed joint testing, ultrasonic examination, radiographic examination, leak testing, brazing inspection standard, NDE brazed joints, brazing quality control, brazed assemblies inspection
Frequently Asked Questions
EN 12799:2000/A1:2003 is a amendment published by the European Committee for Standardization (CEN). Its full title is "Brazing - Non-destructive examination of brazed joints". This standard covers: This European Standard describes non-destructive examination procedures and test piece types necessary to perform the tests on brazed joints. The non-destructive examination methods described are as follows: a) visual examination (see clause 4); b) ultrasonic examination (see clause 5); c) radiographic examination (see clause 6); d) penetrant examination (see clause 7); e) leak testing (see clause 8); f) proof testing (see clause 9); g) thermography (see clause 10). The brazed joints to which these tests are applied can either be test samples manufactured to obtain brazed joint design data, or manufactured as part of the approval testing of a brazing procedure, or parts of a brazed assembly. The type of test piece described for each test can be quoted or incorporated in engineering application standards that deal with brazed assemblies. This European Standard does not recommend the number of samples to be tested or the repeat tests allowed. Neither does it specify methods of sampling brazed joints, except to give guidance regarding the precautions necessary, nor does it comment on the acceptance criteria applicable to any of the tests. No attempt is made to define which test or tests, if any , should be applied in any situation. This is a matter to be established before any particular method of test is selected. The methods of non-destructive examination are not associated with any particular type of brazed assembly but lay down the general principles of the types of testing described. It is emphasised that a satisfactory examination method can only be developed and used after taking into account all the relevant factors regarding the equipment to be used and the characteristics of the test piece being examined.
This European Standard describes non-destructive examination procedures and test piece types necessary to perform the tests on brazed joints. The non-destructive examination methods described are as follows: a) visual examination (see clause 4); b) ultrasonic examination (see clause 5); c) radiographic examination (see clause 6); d) penetrant examination (see clause 7); e) leak testing (see clause 8); f) proof testing (see clause 9); g) thermography (see clause 10). The brazed joints to which these tests are applied can either be test samples manufactured to obtain brazed joint design data, or manufactured as part of the approval testing of a brazing procedure, or parts of a brazed assembly. The type of test piece described for each test can be quoted or incorporated in engineering application standards that deal with brazed assemblies. This European Standard does not recommend the number of samples to be tested or the repeat tests allowed. Neither does it specify methods of sampling brazed joints, except to give guidance regarding the precautions necessary, nor does it comment on the acceptance criteria applicable to any of the tests. No attempt is made to define which test or tests, if any , should be applied in any situation. This is a matter to be established before any particular method of test is selected. The methods of non-destructive examination are not associated with any particular type of brazed assembly but lay down the general principles of the types of testing described. It is emphasised that a satisfactory examination method can only be developed and used after taking into account all the relevant factors regarding the equipment to be used and the characteristics of the test piece being examined.
EN 12799:2000/A1:2003 is classified under the following ICS (International Classification for Standards) categories: 25.160.50 - Brazing and soldering. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12799:2000/A1:2003 has the following relationships with other standards: It is inter standard links to EN 12799:2000. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12799:2000/A1:2003 is associated with the following European legislation: EU Directives/Regulations: 97/23/EC; Standardization Mandates: M/071. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2004
Trdo spajkanje - Neporušitvene preiskave spajkanih spojev
Brazing - Non-destructive examination of brazed joints
Hartlöten - Zerstörungsfreie Prüfung von Hartlötverbindungen
Brasage fort - Contrôles non destructifs des assemblages réalisés par brasage fort
Ta slovenski standard je istoveten z: EN 12799:2000/A1:2003
ICS:
25.160.50 Trdo in mehko lotanje Brazing and soldering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celot
...
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