Fixed firefighting systems - Water mist systems - Part 1: Design, installation, inspection and maintenance

This European Standard specifies requirements and gives recommendations for the design, installation, inspection and maintenance of fixed land based water mist systems.
This document is intended to apply to water mist automatic nozzle systems and water mist deluge systems supplied by stand alone or pumped systems.
Aspects of water mist associated with explosion protection are not covered by this European Standard.
This standard does not cover all legislative requirements. In certain countries specific national regulations apply and take precedence over this European Standard. Users of this European Standard are advised to inform themselves of the applicability or non-applicability for this European Standard by their national responsible authorities.

Ortsfeste Brandbekämpfungsanlagen - Feinsprüh-Löschanlagen - Teil 1: Planung, Einbau, Inspektion und Wartung

Diese Europäische Norm legt die Anforderungen an die Planung, Errichtung, Prüfung und Instandhaltung von ortsfesten Feinsprüh-Löschanlagen fest.
Dieses Dokument gilt für Feinsprühanlagen mit automatischen Düsen und Feinsprüh-Löschanlagen mit offenen Düsen, die von einem eigenständigen System oder Pumpensystemen versorgt werden.
Aspekte von Wassernebel, die den Explosionsschutz betreffen, liegen außerhalb des Anwen¬dungsbereichs dieser Europäischen Norm.
Diese Norm deckt nicht alle gesetzlichen Anforderungen ab. In manchen Ländern gelten spezifische nationale Richtlinien, die Vorrang vor dieser Europäischen Norm haben. Anwendern dieser Europäischen Norm wird geraten, sich über die Anwendbarkeit oder Nichtanwendbarkeit dieser Europäischen Norm durch ihre nationalen zuständigen Stellen zu informieren.

Installations fixes de lutte contre l'incendie - Systèmes à brouillard d'eau - Partie 1 : Conception, installation, inspection et maintenance

La présente Norme européenne spécifie les exigences et donne des recommandations relatives à la conception, à l'installation, à l'inspection et à la maintenance des systèmes fixes à brouillard d'eau terrestres.
Le présent e été élaboré pour être applicable aux systèmes à brouillard d'eau à buses automatiques et aux systèmes à brouillard d'eau de type déluge alimentés par des systèmes autonomes ou avec pompes.
Les aspects du brouillard d'eau associés à la protection contre l'explosion ne sont pas couverts par la présente Norme européenne.
La présente norme ne traite pas des exigences légales. Dans certains pays, des réglementations nationales spécifiques s'appliquent et prennent le pas sur la présente Norme européenne. Il est conseillé aux utilisateurs de la présente Norme européenne de s'informer auprès des autorités nationales responsables de l'applicabilité ou de la non-applicabilité de la présente Norme européenne.

Vgrajeni gasilni sistemi - Sistemi s pršečo vodo - 1. del: Načrtovanje, vgradnja, pregled in vzdrževanje

General Information

Status
Published
Public Enquiry End Date
04-Sep-2017
Publication Date
20-Jan-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Jan-2021
Due Date
18-Mar-2021
Completion Date
21-Jan-2021

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 14972-1:2021
01-februar-2021
Nadomešča:
SIST-TS CEN/TS 14972:2011

Vgrajeni gasilni sistemi - Sistemi s pršečo vodo - 1. del: Načrtovanje, vgradnja,

pregled in vzdrževanje

Fixed firefighting systems - Water mist systems - Part 1: Design, installation, inspection

and maintenance
Ortsfeste Brandbekämpfungsanlagen - Feinsprüh-Löschanlagen - Teil 1: Planung,
Einbau, Inspektion und Wartung

Installations fixes de lutte contre l'incendie - Systèmes à brouillard d'eau - Partie 1 :

Conception, installation, inspection et maintenance
Ta slovenski standard je istoveten z: EN 14972-1:2020
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN 14972-1:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 14972-1:2021
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SIST EN 14972-1:2021
EN 14972-1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2020
EUROPÄISCHE NORM
ICS 13.220.20 Supersedes CEN/TS 14972:2011
English Version
Fixed firefighting systems - Water mist systems - Part 1:
Design, installation, inspection and maintenance

Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen - Feinsprüh-

à brouillard d'eau - Partie 1 : Conception, installation, Löschanlagen - Teil 1: Planung, Einbau, Inspektion und

inspection et maintenance Wartung
This European Standard was approved by CEN on 11 October 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 14972-1:2020 E

worldwide for CEN national Members.
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SIST EN 14972-1:2021
EN 14972-1:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 7

Introduction .................................................................................................................................................................... 9

1 Scope ................................................................................................................................................................. 10

2 Normative references ................................................................................................................................. 10

3 Terms, definitions and abbreviations .................................................................................................. 11

3.1 Terms and definitions ................................................................................................................................ 11

3.2 Abbreviations ................................................................................................................................................ 18

4 Design ............................................................................................................................................................... 18

4.1 Design principal ............................................................................................................................................ 18

4.1.1 General ............................................................................................................................................................. 18

4.1.2 General requirement .................................................................................................................................. 18

4.1.3 Full scale fire testing procedures ........................................................................................................... 18

4.2 Design, installation, operation and maintenance manual ............................................................ 19

4.2.1 General ............................................................................................................................................................. 19

4.2.2 Content of the DIOM manual .................................................................................................................... 19

4.3 Water mist systems using gas for their operation ........................................................................... 21

4.4 Use of additives ............................................................................................................................................. 21

4.5 Design parameters ....................................................................................................................................... 21

4.6 Water and gas supply .................................................................................................................................. 21

4.6.1 Pumped systems requirements .............................................................................................................. 21

4.6.2 Self-contained systems requirements .................................................................................................. 21

4.7 Compartment protection ........................................................................................................................... 21

4.7.1 General ............................................................................................................................................................. 21

4.7.2 Compartment ................................................................................................................................................. 21

4.7.3 Fire hazard ...................................................................................................................................................... 22

4.7.4 Design requirements .................................................................................................................................. 22

4.8 Requirements for different types of water mist deluge systems ................................................ 22

4.8.1 Local application systems ......................................................................................................................... 22

4.8.2 Local application systems with multiple hazards ............................................................................ 22

4.8.3 Volume protection water mist systems ............................................................................................... 22

4.8.4 Zoned protection systems ......................................................................................................................... 22

4.8.5 Activation and control ................................................................................................................................ 22

4.9 Design of water mist automatic nozzle systems ............................................................................... 23

4.9.1 Extent of protection ..................................................................................................................................... 23

4.9.2 Permitted exceptions within a building............................................................................................... 23

4.9.3 Material reaction .......................................................................................................................................... 23

4.9.4 System design ................................................................................................................................................ 23

4.9.5 Nozzle selection and positioning ............................................................................................................ 28

4.9.6 Alarm device .................................................................................................................................................. 28

4.9.7 Test connection ............................................................................................................................................. 28

4.9.8 Air velocity and openings .......................................................................................................................... 28

4.10 Design of water mist deluge system ...................................................................................................... 29

4.10.1 Nozzle selection and positioning ............................................................................................................ 29

4.10.2 Air velocity and openings .......................................................................................................................... 29

4.10.3 Automatic shut-down ................................................................................................................................. 29

4.11 Fire detection and fire alarm systems activating the water mist system ................................ 29

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SIST EN 14972-1:2021
EN 14972-1:2020 (E)

4.11.1 General requirements ................................................................................................................................. 29

4.11.2 Fire detection and fire alarm systems continuity ............................................................................. 29

4.11.3 Avoiding false alarms by water mist discharge ................................................................................. 30

4.11.4 Manual activation ......................................................................................................................................... 30

4.11.5 Electrical detection and activation ......................................................................................................... 30

4.11.6 Non-electrical detection ............................................................................................................................. 31

4.12 Hydraulic and pneumatic calculations ................................................................................................. 31

4.13 Water, propellant and atomizing gas supply design ........................................................................ 31

4.13.1 General ............................................................................................................................................................. 31

4.13.2 Connection to public or town mains ...................................................................................................... 31

4.13.3 Flow requirement ......................................................................................................................................... 32

4.13.4 Maximum and minimum water pressure ............................................................................................ 32

4.13.5 Discharge operating time .......................................................................................................................... 32

4.13.6 Type of water supply ................................................................................................................................... 34

4.13.7 Availability ...................................................................................................................................................... 35

4.13.8 Housing of equipment for water supplies ........................................................................................... 39

5 Installation ...................................................................................................................................................... 39

5.1 General ............................................................................................................................................................. 39

5.1.1 DIOM manual .................................................................................................................................................. 39

5.1.2 Electrical safety ............................................................................................................................................. 39

5.1.3 High Voltage live electrical equipment ................................................................................................. 40

5.1.4 Electrical clearances .................................................................................................................................... 40

5.2 Nozzle ................................................................................................................................................................ 40

5.2.1 General ............................................................................................................................................................. 40

5.2.2 Automatic nozzle .......................................................................................................................................... 41

5.2.3 Open nozzle ..................................................................................................................................................... 41

5.3 Pipe .................................................................................................................................................................... 42

5.3.1 General ............................................................................................................................................................. 42

5.3.2 Protection against mechanical damages .............................................................................................. 42

5.3.3 Protection against corrosion .................................................................................................................... 42

5.3.4 Protection in seismic areas ....................................................................................................................... 42

5.3.5 Protection against freezing for wet pipes ............................................................................................ 42

5.3.6 Accessibility of the pipe work .................................................................................................................. 42

5.3.7 Pipe bending ................................................................................................................................................... 42

5.3.8 Water supply pipes ...................................................................................................................................... 43

5.3.9 Pipe support ................................................................................................................................................... 43

5.3.10 Drainage ........................................................................................................................................................... 44

5.4 Gas and water containers (where provided) ...................................................................................... 44

5.4.1 General ............................................................................................................................................................. 44

5.4.2 Location ............................................................................................................................................................ 44

5.4.3 Accessibility .................................................................................................................................................... 44

5.4.4 Fixing ................................................................................................................................................................. 44

5.4.5 Manifolds ......................................................................................................................................................... 44

5.4.6 Temperature .................................................................................................................................................. 45

5.5 Strainers and filters ..................................................................................................................................... 45

5.5.1 Strainers ........................................................................................................................................................... 45

5.5.2 Nozzle filter ..................................................................................................................................................... 45

5.5.3 System filters .................................................................................................................................................. 45

5.6 Valves ................................................................................................................................................................ 45

5.6.1 General ............................................................................................................................................................. 45

5.6.2 Identifications ................................................................................................................................................ 45

5.6.3 Accessibility .................................................................................................................................................... 45

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SIST EN 14972-1:2021
EN 14972-1:2020 (E)

5.6.4 Securing and monitoring valves ............................................................................................................. 45

5.6.5 Shut-off valves ............................................................................................................................................... 45

5.6.6 Control valves ................................................................................................................................................ 46

5.6.7 Check and non-return valves ................................................................................................................... 46

5.7 Pressure gauges ............................................................................................................................................ 46

5.8 Test connection ............................................................................................................................................. 46

5.8.1 Test connection for automatic water mist systems ......................................................................... 46

5.8.2 Test connection for water mist deluge system .................................................................................. 46

5.9 Electrical installation .................................................................................................................................. 46

5.9.1 Electrical power supply ............................................................................................................................. 46

5.9.2 Fire detection and fire alarm system .................................................................................................... 46

5.10 System monitoring and alarms ............................................................................................................... 46

5.10.1 General ............................................................................................................................................................. 46

5.10.2 Alarms .............................................................................................................................................................. 47

5.10.3 Remote signalling ......................................................................................................................................... 47

5.11 Water mist system supply, including additives ................................................................................ 48

5.11.1 General ............................................................................................................................................................. 48

5.11.2 Water quality ................................................................................................................................................. 48

5.11.3 Additives .......................................................................................................................................................... 48

5.11.4 Water supply .................................................................................................................................................. 48

5.11.5 Test devices .................................................................................................................................................... 51

6 Water mist system components .............................................................................................................. 51

6.1 General ............................................................................................................................................................. 51

6.1.1 Requirements for components ................................................................................................................ 51

6.1.2 Pressure rating ............................................................................................................................................. 51

6.2 Nozzle ............................................................................................................................................................... 51

6.3 Piping and fittings ........................................................................................................................................ 52

6.3.1 Pipework ......................................................................................................................................................... 52

6.3.2 Fittings ............................................................................................................................................................. 52

6.4 Flexible hoses ................................................................................................................................................ 53

6.4.1 Hose length ..................................................................................................................................................... 53

6.4.2 Hoses to be used in areas exposed to fire class B fires ................................................................... 53

6.4.3 Hose rating ..................................................................................................................................................... 53

6.5 Pipe supports ................................................................................................................................................. 53

6.6 Valves................................................................................................................................................................ 53

6.6.1 Shut-off valves ............................................................................................................................................... 53

6.6.2 Pressure regulating valves ....................................................................................................................... 54

6.6.3 Check and non-return valves ................................................................................................................... 54

6.6.4 Drain/fill valves ............................................................................................................................................ 54

6.6.5 Safety valves ................................................................................................................................................... 54

6.7 Control valves ................................................................................................................................................ 54

6.7.1 General ............................................................................................................................................................. 54

6.7.2 Strainers and filters..................................................................................................................................... 54

6.8 Flow switches and flow transmitters .................................................................................................... 55

6.9 Pressure switches and pressure transmitters ................................................................................... 55

6.10 Supply components for self-contained systems ................................................................................ 55

6.10.1 General ............................................................................................................................................................. 55

6.10.2 Excess pressure ............................................................................................................................................. 55

6.10.3 Pressure container marking .................................................................................................................... 55

6.10.4 Design temperature .................................................................................................................................... 55

6.10.5 Gas cylinders and actuation valve .......................................................................................................... 55

6.10.6 Cylinders and storage containers for water ....................................................................................... 55

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SIST EN 14972-1:2021
EN 14972-1:2020 (E)

7 Main pumps for water mist systems ...................................................................................................... 56

7.1 General ............................................................................................................................................................. 56

7.2 Pump set .......................................................................................................................................................... 56

7.2.1 Operation ......................................................................................................................................................... 56

7.2.2 Overpressure.................................................................................................................................................. 56

7.2.3 Centrifugal pumps ........................................................................................................................................ 56

7.2.4 Positive displacement pumps .................................................................................................................. 56

7.2.5 Pump driver .................................................................................................................................................... 56

7.2.6 Pump Cooling ................................................................................................................................................. 56

7.2.7 Pump set anchoring ..................................................................................................................................... 56

7.2.8 Positive displacement pump filters ....................................................................................................... 57

7.2.9 Pump set coupling ........................................................................................................................................ 57

7.2.10 Valves and accessories ................................................................................................................................ 57

7.2.11 Suction pipe .................................................................................................................................................... 57

7.2.12 Discharge pipe ............................................................................................................................................... 58

7.2.
...

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