EN 15004-11:2024

SLOVENSKI STANDARD
oSIST prEN 15004-11:2023
01-julij-2023
Vgrajeni gasilni sistemi - Sistemi za gašenje s plinom - 11. del: Fizikalne lastnosti
in načrtovanje sistema za gašenje z gasilnim sredstvom Halocarbon Blend 55 (ISO
14520-17:2022, spremenjen)
Fixed firefighting systems - Gas extinguishing systems - Part 11: Physical properties and
systems design of gas extinguishing systems for Halocarbon Blend 55 extinguishant
(ISO 14520-17:2022, modified)
Ortsfeste Brandbekämpfungsanlagen - Löschanlagen mit gasförmigen Löschmitteln -
Teil 11: Physikalische Eigenschaften und Anlagenauslegung für Feuerlöschmittel
Halocarbon Blend 55 (ISO 14520 17:2022, modifiziert)
Installations fixes de lutte contre l’incendie - Installations d’extinction à gaz - Partie 11 :
Propriétés physiques et conception des systèmes des installations d’extinction à gaz
pour agent extincteur hydrocarbure halogéné, mélange 55 (ISO 14520-17:2022,
modifiée)
Ta slovenski standard je istoveten z: prEN 15004-11
ICS:
13.220.10 Gašenje požara Fire-fighting
oSIST prEN 15004-11:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 15004-11:2023
oSIST prEN 15004-11:2023
DRAFT
EUROPEAN STANDARD
prEN 15004-11
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2023
ICS 13.220.20
English Version
Fixed firefighting systems - Gas extinguishing systems -
Part 11: Physical properties and systems design of gas
extinguishing systems for Halocarbon Blend 55
extinguishant (ISO 14520-17:2022, modified)
Ortsfeste Brandbekämpfungsanlagen - Löschanlagen
mit gasförmigen Löschmitteln - Teil 11: Physikalische
Eigenschaften und Anlagenauslegung für
Feuerlöschmittel Halocarbon Blend 55
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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15004-11:2023 E
worldwide for CEN national Members.

oSIST prEN 15004-11:2023
prEN 15004-11:2023 (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 Halocarbon Blend 55 . 5
5 Safety of personnel . 8
6 System design . 9
6.1 Fill density . 9
6.2 Superpressurization . 10
6.3 Extinguishant quantity . 10
6.4 Other fill density and superpressurization levels . 14
7 Environmental properties . 14

oSIST prEN 15004-11:2023
prEN 15004-11:2023 (E)
European foreword
This document (prEN 15004-11:2023) has been prepared by Technical Committee EN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
The text of ISO 14520-17:2022 has been prepared by Technical Committee ISO/TC 21 “Equipment for
fire protection and fire fighting” of the International Organization for Standardization (ISO) and has
been taken over as prEN 15004-11:2023 by Technical Committee CEN/TC 191 “Fixed firefighing
systems”, the secretariat of which is held by BSI; with common modifications which are indicated by a
straight line in the margin of the text.
This European Standard 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;
— Part 11: Physical properties and systems design of gas extinguishing systems for Halocarbon Blend 55
extinguishant.
The International Standards ISO 14520-2 and ISO 14520-11, which dealt with CF I and HFC 236fa
extinguishants, respectively, have not been implemented by CEN, as CF I is only valid for local
application and HFC 236fa extinguishant is only applicable for portable fire extinguishers and local
application, respectively, which is not covered by the scope.
oSIST prEN 15004-11:2023
prEN 15004-11:2023 (E)
1 Scope
This document provides specific requirements for gaseous fire-extinguishing systems with respect to
the Halocarbon Blend 55 extinguishant. It includes details of physical properties, specification, usage
and safety aspects. It also covers systems operating at nominal pressures of 25 bar, 35 bar, and 42 bar
and 50 bar, superpressurized with nitrogen. This document does not preclude the use of other systems.
5 2
NOTE 1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm .
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 terminology databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
4 Characteristics and uses
4.1 General
Extinguishant Halocarbon Blend 55 shall comply with the specifications shown in Table 1.
Halocarbon Blend 55 [blend of (50 ± 3) % HFO-1233zd(E) and (50 ± 3) % FK-5-1-12 (by mass)] is a
colourless, almost odourless, electrically non-conductive gas, with a density approximately 6,38 times
that of air.
Its physical properties are shown in Table 2.
Halocarbon Blend 55 extinguishes fires mainly by physical means, but also by some chemical means.

Under revision.
oSIST prEN 15004-11:2023
prEN 15004-11:2023 (E)
Table 1 — Specifications for Halocarbon Blend 55
Property Requirement
Purity 99,5 % by mass, min.
−4
Acidity 3 × 10 % by mass, max.
−4
Water content 10 × 10 % by mass, max.
−4
Non-volatile residue 300 × 10 % by mass, max.
Suspended matter or sediment None visible
a
< 5 600 mg/kg
Kinetic dimers of HFP
b
< 190 mg/kg
Thermodynamic dimer of HFP + HF adduct
a
Kinetic dimers of HFP (CAS 2070-70-4).
b
Thermodynamic dimer of HFP (CAS 1584-03-8) + its HF adduct (CAS 30320-28-6).
Table 2 — Physical properties of Halocarbon Blend 55
Property Units Value
Molecular mass — 184,72
Boiling point at 1,013 bar (absolute) °C 20,7
Freezing point °C –107
Critical temperature °C 159,2
Critical pressure bar (absolute) 28,92
Critical volume cm /mol 354,2
Critical density kg/m 521,6
Vapour pressure 20 °C bar (absolute) 0,988 0
Liquid density 20 °C kg/m 1 431,6
Saturated vapour density 20 °C kg/m 6,67
Specific volume of vapour at 1,013 bar m /kg 0,125 6
(absolute) and 20,0 °C
Chemical formula CF3CH=CClH/C6F12O
50/50 % (by mass)
Chemical name Trans-1-chloro-3,3,3-trifluoroprop-1-ene/
1,1,1,2,2,4,5,5,5-Nonafluoro-4-(trifluoromethyl)-3-
pentanone
5 2
NOTE 1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm .
4.2 Use of Halocarbon Blend 55
Halocarbon Blend 55 total flooding systems may be used for extinguishing fires of all classes within the
limits specified in EN 15004-1:2019, Clause 4.
oSIST prEN 15004-11:2023
prEN 15004-11:2023 (E)
The extinguishant requirements per volume of protected space are shown in Table 3 for various levels
of concentration. These are based on methods shown in EN 15004-1:2019, 7.7.
The extinguishing concentrations and design concentrations for n-heptane and surface class A hazards
are shown in Table 4. Concentrations for other fuels are shown in Table 4.
Table 3 — Extinguishant requirements per volume of protected space
Specific
HFO-1233zd(E)/FK-5-1-12 mass requirements per unit
Temperature vapour
volume of protected space, m / V (kg/m )
volume
T S Design concentration (by volume)
°C m /kg 4 % 5 % 6 % 7 % 8 % 9 % 10 %
-10 0,112 2 0,371 3 0,469 0 0,568 8 0,670 7 0,774 8 0,881 3 0,990 1
-5 0,114 5 0,364 0 0,459 9 0,557 7 0,657 6 0,759 8 0,864 1 0,970 8
0 0,116 7 0,357 1 0,451 1 0,547 0 0,645 1 0,745 2 0,847 6 0,952 3
5 0,118 9 0,350 4 0,442 6 0,536 8 0,633 0 0,731 3 0,831 7 0,934 4
10 0,121 1 0,344 0 0,434 5 0,526 9 0,621 4 0,717 8 0,816 4 0,917 2
15 0,123 4 0,337 8 0,426 6 0,517 4 0,610 1 0,704 9 0,801 7 0,900 7
20 0,125 6 0,331 8 0,419 1 0,508 2 0,599 3 0,692 4 0,787 5 0,884 7
25 0,127 8 0,326 0 0,411 8 0,499 4 0,588 9 0,680 3 0,773 8 0,869 3
30 0,130 0 0,320 4 0,404 7 0,490 8 0,578 8 0,668 7 0,760 5 0,854 4
35 0,132 3 0,315 0 0,397 9 0,482 6 0,569 0 0,657 4 0,747 7 0,840 0
40 0,134 5 0,309 8 0,391 3 0,474 6 0,559 6 0,646 5 0,735 3 0,826 1
45 0,136 7 0,304 7 0,384 9 0,466 8 0,550 5 0,636 0 0,723 3 0,812 6
50 0,139 0 0,299 9 0,378 8 0,459 4 0,541 7 0,625 8 0,711 7 0,799 6
55 0,141 2 0,295 1 0,372 8 0,452 1 0,533 1 0,615 9 0,700 5 0,787 0
60 0,143 4 0,290 5 0,367 0 0,445 1 0,524 8 0,606 3 0,689 6 0,774 8
65 0,145 6 0,286 1 0,361 4 0,438 3 0,516 8 0,597 1 0,679 1 0,762 9
70 0,147 9 0,281 8 0,355 9 0,431 7 0,509 0 0,588 1 0,668 9 0,751 4
75 0,150 1 0,277 6 0,350 7 0,425 3 0,501 5 0,579 3 0,658 9 0,740 3
80 0,152 3 0,273 5 0,345 5 0,419 0 0,494 1 0,570 9 0,649 3 0,729 5
85 0,154 5 0,269 6 0,340 5 0,413 0 0,487 0 0,562 6 0,639 9 0,718 9
NOTE 1 This information refers only to the product Halocarbon Blend 55 and does not represent any
other products containing HFO-1233zd(E) or FK-5-1-12 as components.
oSIST prEN 15004-11:2023
prEN 15004-11:2023 (E)
Key
3 3
m / V is the agent mass requirements (kg/m ); i.e. mass, m, in kg of agent required per m of protected
volume, V, to produce the indicated concentration at the temperature specified;
V is the net volume of hazard (m ); i.e. the enclosed volume minus the fixed structures impervious to
extinguishant:

cV
m=

100− cS

T is the temperature (°C); i.e. the design temperature in the hazard area;
S is the specific volume (m /kg); the specific volume of superheated Halocarbon Blend 55 vapour at a
pressure of 1,013 bar (absolute) may be approximated by the formula:
S k+ kT
where
k1 = 0,116 7
k2 = 0,000 445
c is the concentration (%); i.e. the volumetric concentration of Halocarbon Blend 55 in air at
...