SIST EN 1779:2000
(Main)Non-destructive testing - Leak testing - Criteria for method and technique selection
Non-destructive testing - Leak testing - Criteria for method and technique selection
This European Standard describes criteria for the selection of the most suitable method and technique for the assessment of leak tightness by indication or measurement of a gas leakage. Annex A, normative, allows a comparison of standard test methods. Leak detection using hydrostatic tests, ultrasonic or electromagnetic methods is not included in this document. This standard can be used for equipment which can be evacuated or pressurized.
Zerstörungsfreie Prüfung - Dichtheitsprüfung - Kriterien zur Auswahl von Prüfmethoden und -verfahren
Dieser Europäische Norm beschreibt die Kriterien für die Auswahl der geeignetsten Methoden und Verfahren für die Beurteilung der Dichtheit durch Anzeige oder Messung einer Gasleckage. Der normative Anhang A erlaubt einen Vergleich der Standardprüfverfahren. Dichtheitsprüfungen, die hydrostatische Prüfungen, elektromagnetische Ultraschallprüfungen beinhalten, sind in diesem Entwurf nicht berücksichtigt. Diese Europäische Norm kann auf Einrichtungen angewendet werden, die evakuiert oder unter Druck gesetzt werden können.
Essais non destructifs - Contrôle d'étanchéité - Criteres de choix de la méthode et de la technique
Le présent projet de norme européenne décrit les critères de sélection de la meilleure méthode et de la meilleure technique d'évaluation de l'étanchéité par indication ou mesurage d'une fuite gazeuse. L'annexe A, normative, permet de comparer des techniques de contrôle normalisées. Le contrôle de l'étanchéité par épreuve hydrostatique, par les ultrasons ou par des méthodes électromagnétiques ne figure pas dans ce document. La présente norme s'applique aux appareils sous vide ou sous pression.
Neporušitveno preskušanje - Preskus tesnosti - Kriteriji za izbiro metode in postopka
General Information
- Status
- Published
- Publication Date
- 31-Jan-2000
- Technical Committee
- PKG - Testing of metallic materials
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Feb-2000
- Due Date
- 01-Feb-2000
- Completion Date
- 01-Feb-2000
Relations
- Effective Date
- 22-Dec-2008
- Effective Date
- 20-Dec-2023
Overview
EN 1779:1999 is a CEN European Standard that provides criteria for selecting the most suitable non‑destructive leak testing method and technique for assessing leak tightness by indication or measurement of a gas leakage. The standard applies to equipment that can be evacuated or pressurized and includes a normative Annex A enabling comparison of standard test methods. It explicitly excludes leak detection using hydrostatic tests, ultrasonic or electromagnetic methods.
Key Topics
- Scope and applicability - guidance limited to gas‑based leak detection for evacuable or pressurizable equipment; hydrostatic, ultrasonic and electromagnetic leak detection techniques are not covered.
- Method vs. technique selection - criteria to choose between indication (qualitative) and measurement (quantitative) approaches for gas leakage assessment.
- Practical comparison - Annex A provides a structured, normative comparison of standard test methods to support decision making.
- Test conditions and constraints - consideration of equipment geometry, pressure range, test medium, accessibility, and sensitivity requirements when selecting a leak test.
- Performance and suitability factors - evaluation of detection sensitivity, repeatability, false‑positive/negative risks, and operational constraints (e.g., safety, environmental, cleanliness).
- Operational considerations - sample preparation, evacuation/pressurization capability, and the interface between test method and production or inspection processes.
Applications
EN 1779 is valuable for organizations that need to establish, document or improve leak testing strategies using gas‑based NDT methods. Typical uses include:
- Choosing the right leak detection approach for pressure vessels, piping, valves and sealed assemblies
- Defining inspection plans in manufacturing, assembly lines and maintenance operations
- Setting acceptance criteria and test procedures in quality systems
- Supporting procurement and specification of leak testing services or equipment
Who uses this standard:
- NDT engineers and inspectors
- Quality and reliability managers
- Mechanical and design engineers specifying testability
- Testing laboratories and inspection service providers
- Manufacturers in sectors such as aerospace, automotive, petrochemical, medical devices, HVAC and general industrial equipment
Related Standards
EN 1779 complements other CEN/ISO standards and guidance on non‑destructive testing and leak testing methodology. Users typically consult EN 1779 alongside relevant national and industry standards to define detailed test procedures, safety requirements and acceptance criteria.
Keywords: EN 1779, EN 1779:1999, leak testing, non‑destructive testing, NDT leak testing, leak tightness, gas leakage, method selection.
Frequently Asked Questions
SIST EN 1779:2000 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Non-destructive testing - Leak testing - Criteria for method and technique selection". This standard covers: This European Standard describes criteria for the selection of the most suitable method and technique for the assessment of leak tightness by indication or measurement of a gas leakage. Annex A, normative, allows a comparison of standard test methods. Leak detection using hydrostatic tests, ultrasonic or electromagnetic methods is not included in this document. This standard can be used for equipment which can be evacuated or pressurized.
This European Standard describes criteria for the selection of the most suitable method and technique for the assessment of leak tightness by indication or measurement of a gas leakage. Annex A, normative, allows a comparison of standard test methods. Leak detection using hydrostatic tests, ultrasonic or electromagnetic methods is not included in this document. This standard can be used for equipment which can be evacuated or pressurized.
SIST EN 1779:2000 is classified under the following ICS (International Classification for Standards) categories: 19.100 - Non-destructive testing. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 1779:2000 has the following relationships with other standards: It is inter standard links to SIST EN 1779:2000/A1:2004, oSIST prEN 1779:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 1779:2000 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.
SIST EN 1779:2000 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Neporušitveno preskušanje - Preskus tesnosti - Kriteriji za izbiro metode in postopkaZerstörungsfreie Prüfung - Dichtheitsprüfung - Kriterien zur Auswahl von Prüfmethoden und -verfahrenEssais non destructifs - Contrôle d'étanchéité - Criteres de choix de la méthode et de la techniqueNon-destructive testing - Leak testing - Criteria for method and technique selection19.100Neporušitveno preskušanjeNon-destructive testingICS:Ta
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