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SLOVENSKI STANDARD
01-junij-2022
Vgrajeni gasilni sistemi - Sistemi s pršečo vodo - 10. del: Protokol preskušanja
sistemov z odprtimi šobami za zaščito atrija s šobami na stranskih zidovih
Fixed firefighting systems - Water mist systems - Part 10: Test protocol for atrium
protection with sidewall nozzles for open nozzle systems
Ortsfeste Brandbekämpfungsanlagen - Wassernebelsysteme - Teil 10:
Brandversuchsprotokoll für Atriumschutz mit Seitenwanddüsen für offene Düsensysteme
Installations fixes de lutte contre l'incendie - Systèmes à brouillard d'eau - Partie 10 :
Protocole d'essai des systèmes à buses ouvertes pour protection d'atrium avec buses
murales
Ta slovenski standard je istoveten z: EN 14972-10:2022
ICS:
13.220.10 Gašenje požara Fire-fighting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 14972-10
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2022
EUROPÄISCHE NORM
ICS 13.220.20
English Version
Fixed firefighting systems - Water mist systems - Part 10:
Test protocol for atrium protection with sidewall nozzles
for open nozzle systems
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen -
à brouillard d'eau - Partie 10 : Protocole d'essai des Wassernebelsysteme - Teil 10:
systèmes à buses ouvertes pour protection d'atrium Brandversuchsprotokoll für Atriumschutz mit
avec buses murales Seitenwanddüsen für offene Düsensysteme
This European Standard was approved by CEN on 13 March 2022.
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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14972-10:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 5
3.1 Terms and definition . 5
3.2 Abbreviations . 5
4 General requirements . 6
5 Fuel packages . 7
5.1 General . 7
5.2 Walls . 7
5.3 Sofas . 7
5.4 Ignition source .10
6 Test arrangement .11
6.1 General .11
6.2 Fire test set-up 1: Fuel package up against the atrium wall .12
6.3 Fire test set-up 2: Fuel package positioned at half coverage spacing .12
6.4 Fire test set-up 3: Fuel package positioned at full system coverage distance .12
7 Test equipment requirements .13
8 Instrumentation requirements .14
8.1 General .14
8.2 Temperature .14
8.3 Pressure and flow rate .15
8.4 Time .15
9 Test criteria .16
9.1 General .16
9.2 Fire tests .16
9.3 Evaluation of test results .18
9.3.1 Temperatures .18
9.3.2 Fire damage .18
10 Test report .19
European foreword
This document (EN 14972-10:2022) 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 October 2022, and conflicting national standards shall
be withdrawn at the latest by October 2022.
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.
EN 14972, Fixed firefighting systems - Water mist systems, consists of the following parts:
— Part 1: Design, installation, inspection and maintenance
— Part 2: Test protocol for shopping areas for automatic nozzle systems
— Part 3: Test protocol for office, school class rooms and hotel for automatic nozzle systems
— Part 4: Test protocol for non-storage occupancies for automatic nozzle systems
— Part 5: Test protocol for car garages for automatic nozzle systems
— Part 6: Test protocol for false floors and false ceilings for automatic nozzle systems
— Part 7: Test protocol for commercial low hazard occupancies for automatic nozzle systems
— Part 8: Test protocol for machinery in enclosures exceeding 260 m for open nozzle systems
— Part 9: Test protocol for machinery in enclosures not exceeding 260 m for open nozzle systems
— Part 10: Test protocol for atrium protection with sidewall nozzles for open nozzle systems
— Part 11: Test protocol for cable tunnels for open nozzle systems
— Part 12: Test protocol for commercial deep fat cooking fryers for open nozzle systems
— Part 13: Test protocol for wet benches and other similar processing equipment for open nozzle systems
— Part 14: Test protocol for combustion turbines in enclosures exceeding 260 m for open nozzle systems
— Part 15: Test protocol for combustion turbines in enclosures not exceeding 260 m for open nozzle
systems
— Part 16: Test protocol for industrial oil cookers for open nozzle systems
— Part 17: Test protocol for residential occupancies for automatic nozzle systems
NOTE This list includes standards that are in preparation and other standards may be added. For current status
of published standards refer to www.cencenelec.eu.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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.
1 Scope
This document specifies the evaluation of the fire performance of water mist systems for fire protection
of interior atriums, with low or medium fire load where the fire load or any obstructions do not extend
above 1,5 m height.
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 14972-1:2020, Fixed firefighting systems - Water mist systems - Part 1: Design, installation, inspection
and maintenance
ISO 5660-1, Reaction-to-fire tests - Heat release, smoke production and mass loss rate - Part 1: Heat release
rate (cone calorimeter method) and smoke production rate (dynamic measurement)
3 Terms, definitions and abbreviations
3.1 Terms and definition
For the purposes of this document, the terms and definitions given in EN 14972-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at
— IEC Electropedia: available at
3.1.1
atrium
open space inside buildings or inside of a building complex with high ceiling exceeding the height of one
story where the fire load is located at the floor level only
3.1.2
low fire load
non-storage, non-manufacturing occupancy where the quantity and combustibility of the content are low
(less than 150 MJ/m )
3.1.3
medium fire load
non-storage, non-manufacturing occupancy where the quantity and combustibility of the content are
2 2
medium (between 150 MJ/m and 500 MJ/m )
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
CL coverage length
H maximum installation height
4 General requirements
4.1 Up to a maximum of 5 nozzles used in the fire tests shall be kept for later verification.
NOTE Keeping samples of the tested nozzles is common practice. These are usually kept by the laboratories or
the certification bodies.
4.2 The water mist system, after manual activation, shall successfully complete all described
performance fire tests.
4.3 The fire load shall be taken from the conditioning area and arranged into the test area just before
conducting the test.
4.4 The water flow shall be shut-off 15 min after the activation of the system in the fire test. Any
remaining fire shall be manually extinguished and the fire damage shall be recorded.
4.5 All fire tests shall be conducted using the manufacturer instructions in regard to nozzle placement,
spray flux, and operating pressure. Sprays shall not be intermittent.
NOTE Intermittent systems are defined in EN 14972-1.
4.6 Prior to the testing, a layout of the water mist system to be tested shall be submitted for test
preparation purposes. This layout shall include any components required for the testing as well as the
full dimensioning (e.g. length of pipes).
4.7 System components, component locations and operating conditions shall remain unaltered
throughout all of the fire tests.
4.8 The test protocol is only applicable to wall mounted open nozzles.
4.9 Water flow rate shall be measured at a position between the water supply and the inlet to the
system to be tested. As an alternative for single fluid systems the water flow rate can be determined by
the K-factor and the pressure at the nozzles with an additional pressure measurement.
4.10 Unless otherwise stated, all measurements shall be with a tol
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