EN 15004-9:2017

Fixed firefighting system - Gas extinguishing systems - Part 9: Physical properties and system design of gas extinguishing systems for IG-55 extinguishant (ISO 14520-14:2015, modified)

1.1   This part of EN 15004 contains specific requirements for gaseous fire-extinguishing systems, with respect to the IG-55 extinguishant. It includes details of physical properties, specification, usage and safety aspects.
1.2   This part of EN 15004 covers systems operating at nominal pressures of 150 bar at 15 °C, 200 bar at 15 °C and 300 bar at 15 °C. This does not preclude the use of other systems, although design data for other pressures are not available at this time.

Ortsfeste Brandbekämpfungsanlagen - Löschanlagen mit gasförmigen Löschmitteln - Teil 9: Physikalische Eigenschaften und Anlagenauslegung für Löschmittel IG-55 (ISO 14520-14:2015, modifiziert)

1.1   Dieses Dokument legt Anforderungen an Löschanlagen mit gasförmigen Löschmitteln fest, bei denen IG 55 als Löschmittel angewendet wird. Es enthält Einzelheiten zu den physikalischen Eigenschaften, zur Spezifikation, zum Einsatz und zu den Sicherheitsaspekten.
1.2   Dieses Dokument ist anwendbar für Anlagen, die bei Nenndrücken von 150 bar bei 15 °C, 200 bar bei 15 °C und 300 bar bei 15 °C betrieben werden. Die Anwendung anderer Anlagen ist nicht ausgeschlossen, wenngleich derzeit noch keine Auslegungsdaten für andere Drücke zur Verfügung stehen.

Installations fixes de lutte contre l’incendie - Installations d’extinction à gaz - Partie 9 : Propriétés physiques et conception des systèmes pour agent extincteur IG-55 (ISO 14520-14:2015, modifiée)

1.1   La présente partie de l'EN 15004 contient des exigences spécifiques relatives aux installations d’extinction à gaz, contenant de l’agent extincteur IG-55. Elle inclut des détails relatifs à ses propriétés physiques, sa spécification, son usage ainsi que ses aspects de sécurité.
1.2   La présente partie de l'EN 15004 traite des systèmes fonctionnant à des pressions nominales de 150 bar à 15 °C, 200 bar à 15 °C et 300 bar à 15 °C. Cela n’exclut pas l’utilisation d’autres systèmes, les données nominales pour d’autres pressions étant toutefois indisponibles au moment de la publication.

Vgrajeni gasilni sistemi - Sistemi za gašenje s plinom - 9. del: Fizikalne lastnosti in načrtovanje sistema za gašenje s plinom za gasilo IG-55 (ISO 14520-14:2015, spremenjen)

1.1   Ta del standarda EN 15004 vsebuje specifične zahteve za gašenje s plinom v povezavi s sredstvom za gašenje IG-55. Vsebuje podrobnosti o fizičnih lastnostih, specifikacijah, uporabi in varnostnih vidikih.
1.2   Ta del standarda EN 15004 zajema sisteme, ki delujejo pri nazivnih tlakih 150 barov pri 15 °C, 200 barov pri 15 °C in 300 barov pri 15 °C. To ne izključuje uporabe drugih sistemov, čeprav projektni podatki za druge tlake trenutno niso na voljo.

General Information

• Status: Published
• Publication Date: 12-Dec-2017
• Withdrawal Date: 29-Jun-2018
• ICS: 13.220.20 - Fire protection
• Technical Committee: CEN/TC 191 - Fixed firefighting systems
• Drafting Committee: CEN/TC 191/WG 6 - Gas extinguishing Systems and components
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 05-Jun-2023
• Completion Date: 14-Apr-2025
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/109 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on fire alarm/detection, fixed firefighting, fire and smoke control and explosion suppression products
• Ref Project: SIST EN 15004-9:2018 - Fixed firefighting system - Gas extinguishing systems - Part 9: Physical properties and system design of gas extinguishing systems for IG-55 extinguishant (ISO 14520-14:2015, modified)

Relations

• Replaces: EN 15004-9:2008 - Fixed firefighting systems - Gas extinguishing systems - Part 9: Physical properties and system design of gas extinguishing systems for IG-55 extinguishant (ISO 14520-14:2005, modified)
• Effective Date: 09-Mar-2016

Overview

EN 15004-9:2017 (CEN) provides specific requirements for gas extinguishing systems using the IG-55 extinguishant (ISO 14520-14:2015, modified). This part of the EN 15004 series focuses on physical properties, system design, storage pressures and safety for IG-55 total‑flooding systems. IG-55 is an inert blend of nominally 50% argon and 50% nitrogen and is electrically non‑conductive with the same approximate density as air.

Key Topics

• Extinguishant composition and purity: IG-55 is nominally 50% argon / 50% nitrogen (±5%). Typical purity requirements include >99.9% component purity and strict moisture limits.
• Physical properties and quantities: The standard provides tabulated agent volumes per protected volume (V/V) across temperatures and design concentrations. It also gives an approximate relation for the specific reference volume SR (SR = k1 + k2 · TR with k1 = 0.6598 and k2 = 0.002416) used to calculate agent requirements.
• Design concentrations: Representative extinguishment and minimum design concentrations for tested fuels are included. For example, heptane extinguishment is ~36.5% by volume with a minimum design concentration of 47.6% (accounting for safety factors). Surface Class A fuels (wood crib, PMMA, PP, ABS) and Higher‑Hazard Class A guidance are provided.
• Storage and fill pressures: EN 15004-9:2017 covers systems operating at nominal fill pressures of 150 bar, 200 bar and 300 bar at 15 °C and provides container working pressures (e.g., 150 bar fill → max working pressure 178 bar at 50 °C; 200 bar → 240 bar; 300 bar → 366 bar).
• Personnel safety: The standard highlights hazards from oxygen reduction and combustion products. Physiological guidance lists a NOAEL equivalent at 43% by volume and a LOAEL at 52% by volume (hypoxic atmosphere equivalents).
• Environmental profile: IG-55 is an inert gas mixture with zero GWP and zero ODP, an important consideration for environmentally sensitive installations.

Applications

EN 15004-9:2017 is aimed at designers, installers, safety engineers and authorities having jurisdiction for facilities requiring clean total‑flooding protection where electrically non‑conductive and environmentally benign agents are required. Typical application benefits:

• Reliable total‑flooding protection for electronic, electrical and high‑value assets
• Clear guidance on agent quantity calculations and container selection
• Integrated safety measures addressing personnel exposure and fire combustion products

Related Standards

• EN 15004-1:2017 - Design, installation and maintenance for gas extinguishing systems (normative reference)
• Other EN 15004 parts (e.g., Parts 2–10) addressing physical properties and system design for alternative agents

For project implementation use the tables and calculation methods in EN 15004-9:2017 along with EN 15004-1:2017 design rules. Consult local regulations and competent authorities for application- and jurisdiction-specific requirements.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VSUHPHQMHQOrtsfeste Brandbekämpfungsanlagen - Löschanlagen mit gasförmigen Löschmitteln - Teil 9: Physikalische Eigenschaften und Anlagenauslegung für Löschmittel IG-55 (ISO 14520-14:2015, modifiziert)Installations fixes de lutte contre l’incendie - Installations d’extinction à gaz - Partie 9 : Propriétés physiques et conception des systèmes pour agent extincteur IG-55 (ISO 14520-14:2015, modifiée)Fixed firefighting system - Gas extinguishing systems - Part 9: Physical properties and system design of gas extinguishing systems for IG-55 extinguishant (ISO 14520-14:2015, modified)13.220.10Gašenje požaraFire-fightingICS:Ta slovenski standard je istoveten z:EN 15004-9:2017SIST EN 15004-9:2018en,fr,de01-februar-2018SIST EN 15004-9:2018SLOVENSKI
STANDARDSIST EN 15004-9:20081DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15004-9
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t r s y ICS
s uä t t rä t r Supersedes EN
s w r r væ {ã t r r zEnglish Version
Fixed firefighting system æ Gas extinguishing systems æ Part
{ã Physical properties and system design of gas extinguishing systems for IGInstallations fixes de lutte contre l 5incendie æ Installations d 5extinction à gaz æ Partie
{ ã Propriétés physiques et conception des systèmes pour agent
Ortsfeste Brandbekämpfungsanlagen æ Löschanlagen mit gasförmigen Löschmitteln æ Teil
{ã Physikalische Eigenschaften und Anlagenauslegung für Löschmittel This European Standard was approved by CEN on
t w September
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
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B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w r r væ {ã t r s y ESIST EN 15004-9:2018
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