FprEN 14972-1

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ortsfeste Brandbekämpfungsanlagen - Feinsprüh-Löschanlagen - Teil 1: Planung, Einbau, Inspektion und WartungInstallations fixes de lutte contre l'incendie - Systèmes à brouillard d'eau - Partie 1 : Conception, installation, inspection et maintenanceFixed firefighting systems - Water mist systems - Part 1: Design, installation, inspection and maintenance13.220.10Gašenje požaraFire-fightingICS:Ta slovenski standard je istoveten z:prEN 14972-1oSIST prEN 14972-1:2017en,fr,de01-september-2017oSIST prEN 14972-1:2017SLOVENSKI

sã Designá installationá inspection and maintenance Installations fixes de lutte contre l 5incendie æ Systèmes à brouillard d 5eau æ Partie

sã Planungá Einbauá Inspektion und Wartung This draft European Standard is submitted to CEN members for enquiryä It has been drawn up by the Technical Committee

If this draft becomes a European Standardá CEN members are bounwhich stipulate the conditions for giving this European Standard the status of a national standard without any alterationä

This draft European Standard was established by CEN in three ofer language made by 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

Recipients of this draft are invited to submitá with their commentsá notification of any relevant patent rights of which they are aware and to provide supporting documentationä

Warning ã This document is not a European Standardä It is distributed for review and commentsä It is subject to change without notice and shall not be referred to as a European Standardä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä prEN

prEN 14972-1:2017 (E) 2 Contents Page European foreword ....................................................................................................................................................... 6 1 Scope .................................................................................................................................................................... 7 2 Normative references .................................................................................................................................... 7 3 Terms, definitions and abbreviations ..................................................................................................... 8 3.1 Terms and definitions ................................................................................................................................... 8 3.2 Abbreviations ................................................................................................................................................ 12 4 Design ............................................................................................................................................................... 12 4.1 Design principal ............................................................................................................................................ 12 4.1.1 General ............................................................................................................................................................. 12 4.1.2 Qualification ................................................................................................................................................... 13 4.1.3 Testing procedures ...................................................................................................................................... 13 4.1.4 Delay of activation ....................................................................................................................................... 13 4.1.5 Material reaction .......................................................................................................................................... 13 4.1.6 Real scale testing .......................................................................................................................................... 13 4.2 Manufacturer manual ................................................................................................................................. 13 4.2.1 General ............................................................................................................................................................. 13 4.2.2 Manufacturer’s responsibility ................................................................................................................. 13 4.2.3 Content of the DIOM manual .................................................................................................................... 13 4.3 Water mist systems using gas for their operation ........................................................................... 14 4.3.1 General ............................................................................................................................................................. 14 4.3.2 Life safety ........................................................................................................................................................ 15 4.4 Use of additives ............................................................................................................................................. 15 4.5 Design parameters ....................................................................................................................................... 15 4.6 Water mist systems supply ....................................................................................................................... 15 4.6.1 Pumped systems requirements .............................................................................................................. 15 4.6.2 Self-contained systems requirements .................................................................................................. 15 4.7 Protected hazard parameters .................................................................................................................. 15 4.7.1 Compartment parameters ........................................................................................................................ 15 4.8 Requirements for different types of water mist deluge systems ................................................ 16 4.8.1 Multiple hazard local application systems.......................................................................................... 16 4.8.2 Volume protection systems ...................................................................................................................... 16 4.8.3 Zoned protection systems ......................................................................................................................... 16 4.8.4 Actuation ......................................................................................................................................................... 16 4.8.5 Activation and control ................................................................................................................................ 16 4.9 Design of water mist automatic nozzle systems ............................................................................... 16 4.9.1 Extent of protection ..................................................................................................................................... 16 4.9.2 Permitted exceptions within a building............................................................................................... 16 4.9.3 Necessary exceptions within a building ............................................................................................... 17 4.9.4 Building occupancy ..................................................................................................................................... 17 4.9.5 System design ................................................................................................................................................ 17 4.9.6 Nozzles selection and positioning .......................................................................................................... 22 4.9.7 Alarm device .................................................................................................................................................. 22 4.9.8 Test connection ............................................................................................................................................. 22 4.9.9 Air velocity, openings and ventilation .................................................................................................. 22 4.10 Design of water mist deluge system ...................................................................................................... 23 4.10.1 Nozzle selection and positioning ............................................................................................................ 23 4.10.2 Design for different hazards .................................................................................................................... 23 4.10.3 Air velocity, openings and ventilation .................................................................................................. 23 4.10.4 Automatic shut-down ................................................................................................................................. 23 oSIST prEN 14972-1:2017

prEN 14972-1:2017 (E) 3 4.11 Fire detection and fire alarm systems activating the water mist system................................. 23 4.11.1 General requirements ................................................................................................................................. 23 4.11.2 Fire detection and fire alarm systems continuity ............................................................................. 24 4.11.3 Avoiding false alarms by water mist discharge ................................................................................. 24 4.11.4 Manual activation ......................................................................................................................................... 24 4.11.5 Manual emergency activation .................................................................................................................. 24 4.11.6 Non-electrical detection ............................................................................................................................. 25 4.12 Hydraulic and pneumatic calculations ................................................................................................. 26 4.13 Water, propellant and atomizing gas supply design ........................................................................ 26 4.13.1 General ............................................................................................................................................................. 26 4.13.2 Connection to public or town mains ...................................................................................................... 26 4.13.3 Flow requirement ......................................................................................................................................... 26 4.13.4 Maximum and minimum water pressure ............................................................................................ 26 4.13.5 Discharge duration ...................................................................................................................................... 26 4.13.6 Type of water supply ................................................................................................................................... 27 4.13.7 Availability ...................................................................................................................................................... 27 4.13.8 Housing of equipment for water supplies ........................................................................................... 29 5 Installation ...................................................................................................................................................... 30 5.1 General ............................................................................................................................................................. 30 5.1.1 DIOM manual .................................................................................................................................................. 30 5.1.2 Electrical safety ............................................................................................................................................. 30 5.1.3 High Voltage live electrical equipment ................................................................................................. 30 5.1.4 Electrical clearances .................................................................................................................................... 30 5.2 System performances .................................................................................................................................. 31 5.3 Nozzle ................................................................................................................................................................ 31 5.3.1 General ............................................................................................................................................................. 31 5.3.2 Automatic nozzle .......................................................................................................................................... 31 5.3.3 Open nozzle ..................................................................................................................................................... 32 5.4 Pipe .................................................................................................................................................................... 32 5.4.1 General ............................................................................................................................................................. 32 5.4.2 Protection against mechanical damages .............................................................................................. 32 5.4.3 Protection against corrosion .................................................................................................................... 32 5.4.4 Protection in seismic areas ....................................................................................................................... 32 5.4.5 Protection against freezing for wet pipes ............................................................................................ 32 5.4.6 Accessibility of the pipe work .................................................................................................................. 32 5.4.7 Pipe bending ................................................................................................................................................... 32 5.4.8 Water supply pipes ...................................................................................................................................... 33 5.4.9 Pipe support ................................................................................................................................................... 33 5.4.10 Drainage ........................................................................................................................................................... 34 5.5 Gas and water containers (where provided) ...................................................................................... 34 5.5.1 General ............................................................................................................................................................. 34 5.5.2 Location ............................................................................................................................................................ 34 5.5.3 Accessibility .................................................................................................................................................... 34 5.5.4 Fixing ................................................................................................................................................................. 34 5.5.5 Manifolds ......................................................................................................................................................... 34 5.5.6 Temperature .................................................................................................................................................. 34 5.6 Strainers and filters ..................................................................................................................................... 34 5.6.1 Filters ................................................................................................................................................................ 34 5.6.2 Strainers ........................................................................................................................................................... 34 5.7 Valves ................................................................................................................................................................ 35 5.7.1 General ............................................................................................................................................................. 35 5.7.2 Identifications ................................................................................................................................................ 35 oSIST prEN 14972-1:2017

prEN 14972-1:2017 (E) 4 5.7.3 Accessibility ................................................................................................................................................... 35 5.7.4 Monitoring ...................................................................................................................................................... 35 5.7.5 Shut-off valves ............................................................................................................................................... 35 5.7.6 Control valves ................................................................................................................................................ 35 5.7.7 Check and non-return valves ................................................................................................................... 35 5.8 Pressure gauges ............................................................................................................................................ 35 5.9 Test connection ............................................................................................................................................. 35 5.9.1 Test connection for automatic water mist systems ......................................................................... 35 5.9.2 Test connection for water mist deluge installation ......................................................................... 36 5.10 Electrical installation .................................................................................................................................. 36 5.10.1 Electrical power supply ............................................................................................................................. 36 5.10.2 Fire detection and fire alarm system .................................................................................................... 36 5.11 System monitoring ....................................................................................................................................... 36 5.11.1 General ............................................................................................................................................................. 36 5.11.2 Signals .............................................................................................................................................................. 36 5.11.3 Remote signalling ......................................................................................................................................... 37 5.12 Water mist system supply, including additives ................................................................................ 37 5.12.1 General ............................................................................................................................................................. 37 5.12.2 Water quality ................................................................................................................................................. 37 5.12.3 Additives .......................................................................................................................................................... 37 5.12.4 Water supply .................................................................................................................................................. 38 5.12.5 Test devices .................................................................................................................................................... 39 5.13 Extension of existing water mist systems ........................................................................................... 40 6 Water mist system components .............................................................................................................. 40 6.1 General ............................................................................................................................................................. 40 6.1.1 Pressure Rating ............................................................................................................................................. 40 6.2 Nozzle ............................................................................................................................................................... 40 6.2.1 Nozzles ............................................................................................................................................................. 40 6.3 Piping and fittings ........................................................................................................................................ 40 6.3.1 Pipework ......................................................................................................................................................... 40 6.3.2 Fittings ............................................................................................................................................................. 41 6.4 Flexible hoses ................................................................................................................................................ 42 6.4.1 Hose length ..................................................................................................................................................... 42 6.4.2 Hoses to be used in areas exposed to fire class B fires ................................................................... 42 6.4.3 Hose rating ..................................................................................................................................................... 42 6.5 Pipe supports ................................................................................................................................................. 42 6.6 Valves................................................................................................................................................................ 42 6.6.1 Shut-off valves ............................................................................................................................................... 42 6.6.2 Pressure regulating valves ....................................................................................................................... 42 6.6.3 Check and non-return valves ................................................................................................................... 43 6.6.4 Drain/fill valves ............................................................................................................................................ 43 6.6.5 Safety valves ................................................................................................................................................... 43 6.7 Control (deluge) valves .............................................................................................................................. 43 6.7.1 General ............................................................................................................................................................. 43 6.7.2 Strainers and Filters.................................................................................................................................... 43 6.8 Flow switches................................................................................................................................................. 43 6.9 Pressure switches ........................................................................................................................................ 43 6.10 Supply components ..................................................................................................................................... 44 6.10.1 General ............................................................................................................................................................. 44 6.10.2 Excess pressure ............................................................................................................................................. 44 6.10.3 Pressure container marking .................................................................................................................... 44 6.10.4 Design temperature .................................................................................................................................... 44 oSIST prEN 14972-1:2017

prEN 14972-1:2017 (E) 5 6.10.5 Gas cylinders and actuation valve .......................................................................................................... 44 6.10.6 Cylinders and storage containers for water ....................................................................................... 44 7 Main pumps for water mist systems ...................................................................................................... 44 7.1 General ............................................................................................................................................................. 44 7.2 Pump set .......................................................................................................................................................... 44 7.2.1 Operation ......................................................................................................................................................... 44 7.2.2 Overpressure.................................................................................................................................................. 44 7.2.3 Centrifugal pumps ........................................................................................................................................ 45 7.2.4 Positive displacement pumps .................................................................................................................. 45 7.2.5 Pump driver .................................................................................................................................................... 45 7.2.6 Pump Cooling ................................................................................................................................................. 45 7.2.7 Pump set anchoring ..................................................................................................................................... 45 7.2.8 Positive displacement pump filters ....................................................................................................... 45 7.2.9 Pump set coupling ........................................................................................................................................ 45 7.2.10 Valves and accessories ............................................................................................