SIST EN 15004-4:2020

Fixed firefighting systems - Gas extinguishing systems - Part 4: Physical properties and system design of gas extinguishing systems for HFC 125 extinguishant (ISO 14520-8:2019, modified)

This document specifies requirements for gaseous fire-extinguishing systems, with respect to the HFC 125 extinguishant. It includes details of physical properties, specification, usage and safety aspects.
This document is apploicable for systems operating at nominal pressures of 25 bar and 42 bar, superpressurized with nitrogen. This does not preclude the use of other systems.

Ortsfeste Brandbekämpfungsanlagen - Löschanlagen mit gasförmigen Löschmitteln - Teil 4: Physikalische Eigenschaften und Anlagenauslegung für Feuerlöschmittel HFC 125 (ISO 14520-8:2019, modifiziert)

Dieses Dokument legt Anforderungen an Löschanlagen mit gasförmigen Löschmitteln fest, bei denen HFC 125 als Löschmittel angewendet wird. Es enthält Einzelheiten zu physikalischen Eigenschaften, zur Spezifikation, zum Einsatz und zu Sicherheitsaspekten.
Dieses Dokument ist für Anlagen anwendbar, die bei Nenndrücken von 25 bar und 42 bar mit Stickstoff als Treibgas beaufschlagt werden. Dies schließt nicht die Anwendung anderer Anlagen aus.

Installations fixes de lutte contre l’incendie - Installations d’extinction à gaz - Partie 4 : Propriétés physiques et conception des systèmes pour agent extincteur HFC 125 (ISO 14520-8:2019, modifiée)

Le présent document spécifie des exigences spécifiques relatives aux installations d’extinction à gaz contenant de l’agent extincteur HFC 125. Il inclut des détails relatifs à ses propriétés physiques, sa spécification, son usage ainsi que ses aspects de sécurité.
Le présent document s’applique aux systèmes fonctionnant à des pressions nominales de 25 bar et de 42 bar, surpressurisés à l’azote. Cela n’exclut pas l’utilisation d’autres installations.

Vgrajeni gasilni sistemi - Sistemi za gašenje s plinom - 4. del: Fizikalne lastnosti in načrtovanje sistema za gašenje s plinom za gasilo HFC 125 (ISO 14520-8:2019, spremenjen)

General Information

• Status: Published
• Public Enquiry End Date: 09-Sep-2019
• Publication Date: 11-Nov-2020
• ICS: 13.220.10 - Fire-fighting
• Technical Committee: POZ - Požarna varnost
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 19-Oct-2020
• Due Date: 24-Dec-2020
• Completion Date: 12-Nov-2020
• Ref Project: EN 15004-4:2020 - Fixed firefighting systems - Gas extinguishing systems - Part 4: Physical properties and system design of gas extinguishing systems for HFC 125 extinguishant (ISO 14520-8:2019, modified)

Relations

• Replaces: SIST EN 15004-4:2008 - Fixed firefighting systems - Gas extinguishing systems - Part 4: Physical properties and system design of gas extinguishing systems for HFC 125 extinguishant (ISO 14520-8:2006, modified)
• Effective Date: 01-Dec-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 15004-4:2020
01-december-2020
Nadomešča:
SIST EN 15004-4:2008
Vgrajeni gasilni sistemi - Sistemi za gašenje s plinom - 4. del: Fizikalne lastnosti in
načrtovanje sistema za gašenje s plinom za gasilo HFC 125 (ISO 14520-8:2019,
spremenjen)
Fixed firefighting systems - Gas extinguishing systems - Part 4: Physical properties and
system design of gas extinguishing systems for HFC 125 extinguishant (ISO 14520-
8:2019, modified)
Ortsfeste Brandbekämpfungsanlagen - Löschanlagen mit gasförmigen Löschmitteln - Teil
4: Physikalische Eigenschaften und Anlagenauslegung für Feuerlöschmittel HFC 125
(ISO 14520-8:2019, modifiziert)
Installations fixes de lutte contre l’incendie - Installations d’extinction à gaz - Partie 4 :
Propriétés physiques et conception des systèmes pour agent extincteur HFC 125 (ISO
14520-8:2019, modifiée)
Ta slovenski standard je istoveten z: EN 15004-4:2020
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN 15004-4:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 15004-4:2020

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SIST EN 15004-4:2020


EN 15004-4
EUROPEAN STANDARD

NORME EUROPÉENNE

October 2020
EUROPÄISCHE NORM
ICS 13.220.20 Supersedes EN 15004-4:2008
English Version

Fixed firefighting systems - Gas extinguishing systems -
Part 4: Physical properties and system design of gas
extinguishing systems for HFC 125 extinguishant (ISO
14520-8:2019, modified)
Installations fixes de lutte contre l'incendie - Ortsfeste Brandbekämpfungsanlagen - Löschanlagen
Installations d'extinction à gaz - Partie 4 : Propriétés mit gasförmigen Löschmitteln - Teil 4: Physikalische
physiques et conception des systèmes pour agent Eigenschaften und Anlagenauslegung für
extincteur HFC 125 (ISO 14520-8:2019, modifiée) Feuerlöschmittel HFC 125 (ISO 14520-8:2019,
modifiziert)
This European Standard was approved by CEN on 17 August 2020.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15004-4:2020 E
worldwide for CEN national Members.

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SIST EN 15004-4:2020
EN 15004-4:2020 (E)
Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Characteristics and uses . 5
4.1 General . 5
4.2 Use of HFC 125 systems . 6
5 Safety of personnel . 9
6 System design . 10
6.1 Fill density . 10
6.2 Superpressurization . 11
6.3 Extinguishant quantity . 11
6.4 Other fill density and superpressurization levels . 12
7 Environmental properties . 13

2

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SIST EN 15004-4:2020
EN 15004-4:2020 (E)
European foreword
This document (EN 15004-4:2020) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2021, and conflicting national standards shall be
withdrawn at the latest by April 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 15004-4:2008.
The main changes in EN 15004-4:2020 compared to EN 15004-4:2008 are the following:
— European foreword: Part 3 was removed from the list;
— Foreword of ISO 14520-8 was removed;
— 6.4, Other fill density and superpressurization levels: new sub-clause added;
— Clause 7, Environmental properties: new clause added.
The text of the International Standard ISO 14520-8:2019 from Technical Committee ISO/TC 21
“Equipment for fire protection and firefighting” of the International Organization for Standardization
(ISO) has been taken over as a European Standard by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
EN 15004 will consist 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 4: Physical properties and system design of gas extinguishing systems for HFC 125 extinguishant;
— Part 5: Physical properties and system design of gas extinguishing systems for HFC 227ea
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.
3

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SIST EN 15004-4:2020
EN 15004-4:2020 (E)
The International Standards ISO 14520-2 and ISO 14520-11, which dealt with CF I and HFC 236fa
3
extinguishants, respectively, have not been implemented by CEN, as CF I is only valid for local
3
application and HFC 236fa extinguishant is only applicable for portable fire extinguishers and local
application, respectively, which is not covered by the scope.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.

4

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SIST EN 15004-4:2020
EN 15004-4:2020 (E)
1 Scope
This document specifies requirements for gaseous fire-extinguishing systems, with respect to the
HFC 125 extinguishant. It includes details of physical properties, specification, usage and safety aspects.
This document is applicable for systems operating at nominal pressures of 25 bar and 42 bar,
superpressurized with nitrogen. This does not preclude the use of other systems.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 15004-1:2019, Fixed firefighting systems — Gas extinguishing systems — Part 1: Design, installation
and maintenance (ISO 14520-1:2015, modified)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 15004-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Characteristics and uses
4.1 General
Extinguishant HFC 125 shall comply with the specification shown in Table 1.
HFC 125 is a colourless, almost odourless, electrically non-conductive gas, with a density approximately
four times that of air.
The physical properties are shown in Table 2.
HFC 125 extinguishes fires mainly by physical means, but also by some chemical means.
Table 1 — Specification for HFC 125
Property Requirement
Purity 99,6 % by mass, min.
Acidity –4 %
3 × 10 by mass (3 parts
per million), max.
Water content –4 %
10 × 10 by mass (10 parts
per million), max.
Non-volatile residue 0,01 % by mass, max.
Suspended matter or None visible
sediment
5

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SIST EN 15004-4:2020
EN 15004-4:2020 (E)
Table 2 — Physical properties of HFC 125
Property Units Value
Molecular mass — 120,02
Boiling point at 1,013 bar °C −48,09
(absolute)
Freezing point °C −101
Critical temperature °C 66,02
Critical pressure bar abs 36,18
Critical volume 3 210
cm /mol
Critical density 3 573,6
kg/m
Vapour press
...

SLOVENSKI STANDARD
oSIST prEN 15004-4:2019
01-september-2019
Vgrajeni gasilni sistemi - Sistemi za gašenje s plinom - 4. del: Fizikalne lastnosti in
načrtovanje sistema za gašenje s plinom za gasilo HFC 125 (ISO 14520-8:2016,
spremenjen)
Fixed firefighting systems - Gas extinguishing systems - Part 4: Physical properties and
system design of gas extinguishing systems for HFC 125 extinguishant (ISO 14520-
8:2016, modified)
Ortsfeste Brandbekämpfungsanlagen - Löschanlagen mit gasförmigen Löschmitteln -
Teil 4: Physikalische Eigenschaften und Anlagenauslegung für Feuerlöschmittel HFC
125 (ISO 14520:2016, modifiziert)
Installations fixes de lutte contre l’incendie - Installations d’extinction à gaz - Partie 4 :
Propriétés physiques et conception des systèmes pour agent extincteur HFC 125 (ISO
14520-8:2016, modifiée)
Ta slovenski standard je istoveten z: prEN 15004-4
ICS:
13.220.10 Gašenje požara Fire-fighting
oSIST prEN 15004-4:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 15004-4:2019

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oSIST prEN 15004-4:2019


DRAFT
EUROPEAN STANDARD
prEN 15004-4
NORME EUROPÉENNE

EUROPÄISCHE NORM

June 2019
ICS 13.220.20 Will supersede EN 15004-4:2008
English Version

Fixed firefighting systems - Gas extinguishing systems -
Part 4: Physical properties and system design of gas
extinguishing systems for HFC 125 extinguishant (ISO
14520-8:2016, modified)
Installations fixes de lutte contre l'incendie - Ortsfeste Brandbekämpfungsanlagen - Löschanlagen
Installations d'extinction à gaz - Partie 4 : Propriétés mit gasförmigen Löschmitteln - Teil 4: Physikalische
physiques et conception des systèmes pour agent Eigenschaften und Anlagenauslegung für
extincteur HFC 125 (ISO 14520-8:2016, modifiée) Feuerlöschmittel HFC 125 (ISO 14520:2016,
modifiziert)
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15004-4:2019 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN 15004-4:2019
prEN 15004-4:2019 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Characteristics and uses . 4
4.1 General . 4
4.2 Use of HFC 125 systems . 5
5 Safety of personnel . 7
6 System design . 8
6.1 Fill density . 8
6.2 Superpressurization . 9
6.3 Extinguishant quantity . 9
6.4 Other fill density and superpressurization levels . 10
7 Environmental properties . 10

2

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oSIST prEN 15004-4:2019
prEN 15004-4:2019 (E)
European foreword
This document (prEN 15004-4:2019) 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 15004-4:2008.
The text of the International Standard ISO 14520-8:2016 from Technical Committee ISO/TC 21
“Equipment for fire protection and firefighting” of the International Organization for Standardization
(ISO) has been taken over as a European Standard by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This document will consist 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 5: Physical properties and system design of gas extinguishing systems for HFC 227ea
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.
The International Standards ISO 14520-2 and ISO 14520-11, which dealt with CF I and HFC 236fa
3
extinguishants, respectively, have not been implemented by CEN, as CF I is only valid for local
3
application and HFC 236fa extinguishant is only applicable for portable fire extinguishers and local
application, respectively, which is not covered by the scope.
3

---------------------- Page: 5 ----------------------
oSIST prEN 15004-4:2019
prEN 15004-4:2019 (E)
1 Scope
This document specifies requirements for gaseous fire-extinguishing systems, with respect to the
HFC 125 extinguishant. It includes details of physical properties, specification, usage and safety aspects.
This document is apploicable for systems operating at nominal pressures of 25 bar and 42 bar,
superpressurized with nitrogen. This does not preclude the use of other systems.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 15004-1:2019, Fixed firefighting systems — Gas extinguishing systems — Part 1: Design, installation
and maintenance (ISO 14520-1:2015, modified)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 15004-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Characteristics and uses
4.1 General
Extinguishant HFC 125 shall comply with the specification shown in Table 1.
HFC 125 is a colourless, almost odourless, electrically non-conductive gas, with a density approximately
four times that of air.
The physical properties are shown in Table 2.
HFC 125 extinguishes fires mainly by physical means, but also by some chemical means.
Table 1 — Specification for HFC 125
Property Requirement
Purity 99,6 % by mass, min.
–4 %
Acidity
3 × 10 by mass (3 parts per
million), max.
–4 %
Water content
10 × 10 by mass (10 parts
per million), max.
Non-volatile residue 0,01 % by mass, max.
Suspended matter or None visible
sediment
4

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oSIST prEN 15004-4:2019
prEN 15004-4:2019 (E)
Table 2 — Physical properties of HFC 125
Property Units Value
Molecular mass — 120,02
Boiling point at 1,013 bar °C −48,09
(absolute)
Freezing point °C −101
Critical temperature °C 66,02
Critical pressure bar abs 36,18
3
Critical volume 210
cm /mol
3
Critical density 573,6
kg/m
Vapour pressure 20 °C bar abs 12,05
3
Liquid density 20 °C 1 218,0
kg/m
3
Saturated vapour density 20 °C 77,97
kg/m
3
Specific volume of superheated 0,197 2
m /kg
vapour at 1,013 bar and 20 °C
Chemical formula CF CHF
3 2
Pentafluoroethane
Chemical name
4.2 Use of HFC 125 systems
HFC 125 total flooding systems
...