oSIST prEN 15004-8:2015

Fixed firefighting system - Gas extinguishing systems - Part 8: Physical properties and system design of gas extinguishing systems for IG-100 extinguishant

This document gives specific requirements for gaseous fire-extinguishing systems, with respect to the IG-100 extinguishant. It includes details of physical properties, specification, usage and safety aspects and is applicable to systems operating at nominal pressure of 160 bar, 200 bar and 300 bar at 15 °C. This does not preclude the use of other systems; however, design data for other pressures were not available at time of publication.

Ortsfeste Brandbekämpfungsanlagen - Löschanlagen mit gasförmigen Löschmitteln - Teil 8: Physikalische Eigenschaften und Anlagenauslegung für Feuerlöschmittel IG-100

Installations fixes de lutte contre l’incendie - Installations d’extinction à gaz - Partie 8: Propriétés physiques et conception des systèmes pour agent extincteur IG-100

Vgrajeni gasilni sistemi - Sistemi za gašenje s plinom - 8. del: Fizikalne lastnosti in načrtovanje sistema za gašenje s plinom za gasilo IG-100

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Mar-2015
• ICS: 13.220.20 - Fire protection
• Technical Committee: POZ - Požarna varnost
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 25-Jul-2016
• Due Date: 30-Jul-2016
• Completion Date: 25-Jul-2016
• Ref Project: prEN 15004-8 - Fixed firefighting system - Gas extinguishing systems - Part 8: Physical properties and system design of gas extinguishing systems for IG-100 extinguishant

Relations

• Revised: SIST EN 15004-8:2008 - Fixed firefighting system - Gas extinguishing systems - Part 8: Physical properties and system design of gas extinguishing systems for IG-100 extinguishant (ISO 14520-13:2005, modified)
• Effective Date: 08-Jun-2022
• Revised: SIST EN 15004-8:2008 - Fixed firefighting system - Gas extinguishing systems - Part 8: Physical properties and system design of gas extinguishing systems for IG-100 extinguishant (ISO 14520-13:2005, modified)
• Effective Date: 01-Mar-2015

Overview

The draft European Standard oSIST prEN 15004-8:2015 outlines specific requirements for fixed firefighting systems using the IG-100 gas extinguishing agent. Developed by CEN Technical Committee TC 191, this standard focuses on the physical properties, system design, usage, and safety considerations of gas extinguishing systems employing IG-100. Applicable to systems at nominal pressures of 160, 200, and 300 bar (measured at 15 °C), it provides critical guidelines to ensure effective fire suppression while prioritizing safety and environmental sustainability.

IG-100 is a colourless, odourless, electrically non-conductive inert gas with physical characteristics close to air density, primarily extinguishing fires by reducing oxygen concentration in protected volumes. The standard complements other parts of EN 15004, dedicating attention specifically to IG-100 while facilitating design consistency across different gas extinguishing agents.

Key Topics

• Physical Properties of IG-100
  IG-100 is nitrogen based with:

  • Purity ≥ 99.6% by volume
  • Low moisture and oxygen content
  • Boiling point at −195.8 °C
  • Density similar to air, making it easy to handle and store
    These properties influence system pressure requirements and agent volume calculation.

• System Design Parameters
  Design factors covered include:

  • Fill pressures: 200 bar and 300 bar nominal storage pressure at 15 °C, with maximum working pressures defined to safely handle temperature variations.
  • Extinguishing agent quantity: Minimum agent volume is calculated based on design concentration tables, ensuring effective fire suppression with a safety factor of 1.3 applied to extinguishing concentrations.
  • No superpressurization: Containers storing IG-100 are not superpressurized, simplifying handling and compliance.

• Application Scope and Fire Classes
  IG-100 total flooding systems are suitable for extinguishing fires classified across all classes as per EN 15004-1. Specific reference extinguishing concentrations are given for fuels such as heptane (Class B) and various Class A surface materials.

• Personnel Safety Considerations
  IG-100 reduces oxygen levels to extinguish fires, which poses a potential hazard to occupants if not managed properly. The standard includes physiological safety thresholds such as:

  • No Observed Adverse Effect Level (NOAEL) at 43% IG-100 volume
  • Lowest Observed Adverse Effect Level (LOAEL) at 52% IG-100 volume
    These values assist in safe system design to minimize health risks during discharge.

• Environmental Impact
  As an inert gas, IG-100 has zero Global Warming Potential (GWP) and zero Ozone Depletion Potential (ODP), making it an environmentally responsible choice for fire protection.

Applications

• Industrial and Commercial Fire Protection
  IG-100 systems are ideal for protecting sensitive equipment rooms, data centers, museums, and archives where water-based firefighting systems could cause damage.

• Total Flooding Fire Extinguishing Systems
  Suitable for enclosed hazard volumes requiring rapid fire suppression using gaseous agents that do not leave residue.

• High-Pressure Gas Storage Environments
  Designed for systems operating at elevated pressures (up to 300 bar), ensuring agent availability and system responsiveness in diverse temperature conditions.

• Environmentally Sensitive Sites
  Due to its inert nature and no impact on climate or ozone layer, IG-100 is preferred in applications where environmental regulations are stringent.

Related Standards

• EN 15004-1: Fixed firefighting systems - General requirements
  Provides overarching terms, definitions, and performance principles for gaseous fire extinguishing systems.

• EN 15004 Parts 2 to 10
  Cover other gaseous extinguishing agents including FK-5-1-12, HCFC Blend A, HFC variants, IG-01, IG-55, and IG-541, providing complementary physical and design data.

• EN 15001-1: Safety requirements for fire extinguishing systems
  Details minimum safety standards for personnel protection during system operation.

• Relevant international standards on fire suppression agent testing and system maintenance may also complement oSIST prEN 15004-8:2015.

---

Keywords: IG-100 extinguishing system, fixed firefighting system, gas extinguishing agent, fire suppression, total flooding, system design, physical properties, safety standards, nitrogen gas, inert gas fire system, environmental fire protection, EN 15004-8, firefighting gas system pressure, fire safety engineering.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2015
9JUDMHQLJDVLOQLVLVWHPL6LVWHPL]DJDãHQMHVSOLQRPGHO)L]LNDOQHODVWQRVWLLQ
QDþUWRYDQMHVLVWHPD]DJDãHQMHVSOLQRP]DJDVLOR,*
Fixed firefighting system - Gas extinguishing systems - Part 8: Physical properties and
system design of gas extinguishing systems for IG-100 extinguishant
Ortsfeste Brandbekämpfungsanlagen - Löschanlagen mit gasförmigen Löschmitteln -
Teil 8: Physikalische Eigenschaften und Anlagenauslegung für Feuerlöschmittel IG-100
Installations fixes de lutte contre l’incendie - Installations d’extinction à gaz - Partie 8:
Propriétés physiques et conception des systèmes pour agent extincteur IG-100
Ta slovenski standard je istoveten z: prEN 15004-8
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2014
ICS 13.220.20 Will supersede EN 15004-8:2008
English Version
Fixed firefighting system - Gas extinguishing systems - Part 8:
Physical properties and system design of gas extinguishing
systems for IG-100 extinguishant
Installations fixes de lutte contre l'incendie - Installations Ortsfeste Brandbekämpfungsanlagen - Löschanlagen mit
d'extinction à gaz - Partie 8: Propriétés physiques et gasförmigen Löschmitteln - Teil 8: Physikalische
conception des systèmes pour agent extincteur IG-100 Eigenschaften und Anlagenauslegung für Feuerlöschmittel
IG-100
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 191.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15004-8:2014 E
worldwide for CEN national Members.

Contents
Page
Foreword .3
1 Scope .3
2 Normative references .3
3 Terms and definitions .3
4 Characteristics and uses .4
4.1 General .4
4.2 Use of IG-100 systems .5
5 Safety of personnel.8
6 System design .9
6.1 Fill pressure .9
6.2 Superpressurization .9
6.3 Extinguishant quantity .9
7 Environmental Properties . 10

Foreword
This document (prEN 15004-8:2014) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15004-8:2008.
EN 15004 consists of the following parts, under the general title Fixed firefighting systems – Gas extinguishing
systems:
 Part 1: Design, installation and maintenance”
 Part 2: Physical properties and system design of gas extinguishing systems for FK-5-1-12 extinguishant”
 Part 3: Physical properties and system design of gas extinguishing systems for HCFC Blend A
extinguishant”
 Part 4: Physical properties and system design of gas extinguishing systems for HFC 125 extinguishant”
 Part 6: Physical properties and system design of gas extinguishing systems for HFC 23 extinguishant”
 Part 7: Physical properties and system design of gas extinguishing systems for IG-01 extinguishant “
 Part 8: Physical properties and system design of gas extinguishing systems for IG-100 extinguishant”
 Part 9: Physical properties and system design of gas extinguishing systems for IG-55 extinguishant”
 Part 10: Physical properties and system design of gas extinguishing systems for IG-541 extinguishant”
1 Scope
1.1 This part of EN 15004 contains specific requirements for gaseous fire-extinguishing systems, with
respect to the IG-100 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 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.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 15004-1, Gaseous fire-extinguishing systems — Physical properties and system design — Part 1: General
requirements.
3 Terms and definitions
For the purposes of this part of EN 15004, the terms and definitions given in EN 15004-1 apply.
4 Characteristics and uses
4.1 General
Extinguishant IG-100 shall comply with the specification shown in Table 1.
IG-100 is a colourless, odourless, electrically non-conductive gas with a density approximately the same as
that of air.
The physical properties are shown in Table 2.
IG-100 extinguishes fires mainly by a reduction of oxygen concentration in the atmosphere of the hazard
enclosure.
Table 1 — Specification for IG-100
Property Requirement
Purity 99,6 % by volume, min.
–6
Moisture
50 × 10 by mass, max.
Oxygen 0,1 % by volume, max.
NOTE Only principal contaminants are shown. Other measurements
–6
may include hydrocarbons, CO, NO, NO2, CO2, etc. Most are <20 × 10 .

Table 2 — Physical properties of IG-100
Property Units Value
Molecular mass — 28,02
Boiling point at 1
...