EN 12094-7:2000
(Main)Fixed firefighting systems - Components for gas extinguishing systems - Part 7: Requirements and test methods for nozzles for CO2 systems
Fixed firefighting systems - Components for gas extinguishing systems - Part 7: Requirements and test methods for nozzles for CO2 systems
This European Standard specifies requirements and test methods for nozzles which introduce the extinguishing agent into a CO 2 protected zone. The design of the nozzles will influence discharge rate and thus the pressure drop in the piping network. The
extinguishing agent normally arrives at the nozzle in two-phase flow form (liquid-gaseous mixture). It expands into the protected volume to form a gas or a gas-and-dry-ice mixture depending on the nozzle type. This standard should only be used as guidance for testing nozzles which work on different principles.
Ortsfeste Brandbekämpfungsanlagen - Bauteile für Löschanlagen mit gasförmigen Löschmitteln - Teil 7: Anforderungen und Prüfverfahren für Düsen für CO2-Anlagen
Diese Europäische Norm legt Anforderungen und Prüfverfahren für Düsen fest, die das Löschmittel in einen mit CO 2 geschützten Bereich einbringen. Die Konstruktion der Düsen hat Einfluss auf die Ausströmrate und somit auf den Druckabfall im Rohrnetz. Das
Löschmittel kommt normalerweise an der Düse in zwei-Phasen-Strömung an (Flüssigkeits-Gas-Gemisch). Abhängig vom Düsentyp expandiert es im Schutzbereich zu einem Gas bzw. einer Gas-Trockeneis-Mischung. Diese Norm sollte für Düsen, die nach anderen Prinzipien arbeiten, nur als Anleitung verwendet werden.
Installations fixes de lutte contre l'incendie - Eléments constitutifs des installations d'extinction à gaz - Partie 7: Exigences et méthodes d'essai pour les diffuseurs de systèmes à CO2
La présente Norme européenne spécifie les exigences et les méthodes d'essai applicables aux diffuseurs qui introduisent l'agent d'extinction dans une zone protégée par du CO2.
Vgrajeni gasilni sistemi - Sestavni deli sistemov za gašenje s plinom - 7. del: Zahteve in preskusne metode za šobe pri sistemih s CO2
General Information
- Status
- Published
- Publication Date
- 12-Dec-2000
- Withdrawal Date
- 29-Sep-2002
- Technical Committee
- CEN/TC 191 - Fixed firefighting systems
- Drafting Committee
- CEN/TC 191/WG 6 - Gas extinguishing Systems and components
- Current Stage
- 9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
- Start Date
- 09-Sep-2005
- Completion Date
- 09-Sep-2005
- Directive
- 89/106/EEC - Construction products
Relations
- Effective Date
- 22-Dec-2008
Overview
EN 12094-7:2000 (CEN) is a European standard for fixed firefighting systems that defines requirements and test methods for nozzles used in CO2 gas extinguishing systems. It covers the performance and testing of devices that introduce CO2 into protected zones, recognizing that CO2 typically reaches the nozzle as a two‑phase (liquid–gaseous) flow and expands into the protected volume as a gas or a gas-and-dry‑ice mixture depending on nozzle design. The document is intended as guidance for nozzle testing and for assessing how nozzle design affects discharge behavior and piping network pressure drop.
Key Topics
- Scope and purpose: Requirements and test methods specific to nozzles that discharge CO2 into protected volumes.
- Flow characteristics: Consideration of two‑phase flow at the nozzle inlet and resulting expansion behavior (gas or gas-and-dry‑ice).
- Performance impact: How nozzle design influences discharge rate and pressure drop in the piping network.
- Test methods: Prescribed or recommended procedures for assessing nozzle performance (discharge rate, dispersion characteristics, and related hydraulic effects).
- Guidance limitations: Clarifies that the standard provides guidance for nozzles operating on different principles, rather than covering every possible nozzle type.
Applications
- Selection and specification of CO2 nozzles during design of fixed gas extinguishing systems for machinery rooms, engine rooms, archives, or other protected volumes.
- Verification and acceptance testing by testing laboratories and certification bodies to confirm nozzle performance meets required discharge and hydraulic characteristics.
- Use by fire protection engineers, system designers, and manufacturers to optimize nozzle geometry for target discharge rates and minimize adverse pressure drop effects on piping networks.
- Reference for maintenance teams and facility managers to understand expected nozzle behavior and ensure continued system effectiveness.
Who Uses This Standard
- CO2 nozzle manufacturers
- Fire protection designers and engineers
- Testing laboratories and conformity assessment bodies
- Building and industrial facility safety managers
- Regulatory and compliance personnel working with fixed gas extinguishing systems
Related Standards
- Other parts of the EN 12094 series (components and system requirements for gas extinguishing systems)
- National and sectoral fire safety regulations and guidance that govern CO2 suppression system design and installation
Keywords: EN 12094-7:2000, CO2 nozzles, gas extinguishing systems, fixed firefighting systems, CEN standard, test methods, discharge rate, pressure drop.
Frequently Asked Questions
EN 12094-7:2000 is a standard published by the European Committee for Standardization (CEN). Its full title is "Fixed firefighting systems - Components for gas extinguishing systems - Part 7: Requirements and test methods for nozzles for CO2 systems". This standard covers: This European Standard specifies requirements and test methods for nozzles which introduce the extinguishing agent into a CO 2 protected zone. The design of the nozzles will influence discharge rate and thus the pressure drop in the piping network. The extinguishing agent normally arrives at the nozzle in two-phase flow form (liquid-gaseous mixture). It expands into the protected volume to form a gas or a gas-and-dry-ice mixture depending on the nozzle type. This standard should only be used as guidance for testing nozzles which work on different principles.
This European Standard specifies requirements and test methods for nozzles which introduce the extinguishing agent into a CO 2 protected zone. The design of the nozzles will influence discharge rate and thus the pressure drop in the piping network. The extinguishing agent normally arrives at the nozzle in two-phase flow form (liquid-gaseous mixture). It expands into the protected volume to form a gas or a gas-and-dry-ice mixture depending on the nozzle type. This standard should only be used as guidance for testing nozzles which work on different principles.
EN 12094-7:2000 is classified under the following ICS (International Classification for Standards) categories: 13.220.10 - Fire-fighting; 13.220.20 - Fire protection. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12094-7:2000 has the following relationships with other standards: It is inter standard links to EN 12094-7:2000/A1:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12094-7:2000 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC; Standardization Mandates: M/109. 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)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vgrajeni gasilni sistemi - Sestavni deli sistemov za gašenje s plinom - 7. del: Zahteve in preskusne metode za šobe pri sistemih s CO2Ortsfeste Brandbekämpfungsanlagen - Bauteile für Löschanlagen mit gasförmigen Löschmitteln - Teil 7: Anforderungen und Prüfverfahren für Düsen für CO2-AnlagenInstallations fixes de lutte contre l'incendie - Eléments constitutifs des installations d'extinction a gaz - Partie 7: Exigences et méthodes d'essai pour les diffuseurs de systemesa CO2Fixed firefighting systems - Components for gas extinguishing systems - Part 7: Require
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