oSIST prEN 17966:2023
(Main)Fire protection equipment - Carbon dioxide extinguishing systems for use on premises - Design and installation (ISO 6183:2022, modified)
Fire protection equipment - Carbon dioxide extinguishing systems for use on premises - Design and installation (ISO 6183:2022, modified)
This document specifies requirements and gives recommendations for the design, installation, testing, maintenance and safety of fixed carbon dioxide firefighting systems in buildings, plants or other structures. It is not applicable to extinguishing systems on ships, in aircraft, on vehicles or on mobile fire appliances, or to below ground systems in the mining industry; nor does it apply to carbon dioxide pre-inerting systems.
Design of systems where unclosable opening(s) exceed a specified area and where the opening(s) can be subject to the effect of wind is not specified, although general guidance on the procedure to be followed in such cases is given (see 7.4.3.2).
Brandschutzeinrichtungen - Kohlenstoffdioxid-Löschanlagen für den Einsatz in Gebäuden - Planung und Einbau (ISO 6183:2022, modifiziert)
Dieses Dokument legt Anforderungen fest und enthält Empfehlungen für die Auslegung, Installation, Prüfung, Instandhaltung und Sicherheit von ortsfesten Kohlenstoffdioxid-Brandbekämpfungsanlagen in Gebäuden, Produktionsanlagen oder anderen Bauwerken. Es ist nicht anwendbar für Löschanlagen auf Schiffen, in Flugzeugen, auf Fahrzeugen oder auf mobilen Feuerlöschgeräten oder für unterirdische Anlagen im Bergbau; es gilt ebenfalls nicht für Kohlenstoffdioxid-Vorinertisierungsanlagen.
Die Auslegung von Anlagen, mit (einer) nicht verschließbaren Öffnung(en), deren Fläche einen festgelegten Wert überschreitet und welche der Auswirkung von Wind ausgesetzt sein kann/können, ist nicht festgelegt, obwohl allgemeine Hinweise auf das in solchen Fällen zu befolgende Verfahren gegeben werden (siehe 7.4.3.2).
Équipement de protection contre l'incendie - Installations d'extinction par dioxyde de carbone utilisées dans les bâtiments - Conception et installation (ISO 6183:2022, modifiée)
Le présent document spécifie les exigences et donne des recommandations pour la conception, l’installation, les essais, la maintenance et la sécurité des installations fixes de lutte contre l’incendie par dioxyde de carbone dans les bâtiments, les usines ou autres structures. Il ne s’applique pas aux installations d’extinction des navires, des aéronefs, des véhicules ou des appareils mobiles d’incendie, ni aux systèmes souterrains de l’industrie minière. Il ne s’applique pas non plus aux systèmes de pré inertage par dioxyde de carbone.
La conception de systèmes dans lesquels l’ouverture ou les ouvertures non fermées dépassent une surface spécifiée et l’ouverture ou les ouvertures peuvent être soumises à l’effet du vent n’est pas spécifiée, bien que des recommandations générales sur le mode opératoire à suivre dans de tels cas soient fournies (voir 7.4.3.2).
Oprema za požarno zaščito - Gasilni sistemi z ogljikovim dioksidom za uporabo v prostorih - Načrtovanje in vgradnja (ISO 6183:2022, spremenjen)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 17966:2023
01-julij-2023
Oprema za požarno zaščito - Gasilni sistemi z ogljikovim dioksidom za uporabo v
prostorih - Načrtovanje in vgradnja (ISO 6183:2022, spremenjen)
Fire protection equipment - Carbon dioxide extinguishing systems for use on premises -
Design and installation (ISO 6183:2022, modified)
Brandschutzeinrichtungen - Kohlenstoffdioxid-Löschanlagen für den Einsatz in
Gebäuden - Planung und Einbau (ISO 6183:2022, modifiziert)
Équipement de protection contre l'incendie - Installations d'extinction par dioxyde de
carbone utilisées dans les bâtiments - Conception et installation (ISO 6183:2022,
modifiée)
Ta slovenski standard je istoveten z: prEN 17966
ICS:
13.220.20 Požarna zaščita Fire protection
oSIST prEN 17966:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 17966:2023
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oSIST prEN 17966:2023
DRAFT
EUROPEAN STANDARD
prEN 17966
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2023
ICS 13.220.20
English Version
Fire protection equipment - Carbon dioxide extinguishing
systems for use on premises - Design and installation (ISO
6183:2022, modified)
Équipement de protection contre l'incendie - Brandschutzeinrichtungen - Kohlenstoffdioxid-
Installations fixes d'extinction par dioxyde de carbone Löschanlagen für den Einsatz in Gebäuden - Planung
utilisées dans les bâtiments - Conception et installation und Einbau (ISO 6183:2022, modifiziert)
(ISO 6183:2022, modifée)
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 17966:2023 E
worldwide for CEN national Members.
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prEN 17966:2023 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Use and limitations . 11
4.1 General. 11
4.2 Uses for carbon dioxide systems . 11
4.3 Limitations for carbon dioxide systems . 11
4.4 Temperature limitations . 11
5 Safety . 12
5.1 Hazard to personnel . 12
5.2 Safety precautions . 12
5.2.1 Normally occupied and normally unoccupied areas . 12
5.2.2 Warning notices for occupiable areas . 13
5.2.3 Warning notices for unoccupiable areas . 16
5.3 Electrical hazards . 17
5.4 Electrical earthing . 18
5.5 Electrostatic discharge. 18
6 System design . 18
6.1 General. 18
6.1.1 Introduction . 18
6.1.2 Specifications . 19
6.1.3 Working documents . 19
6.2 Carbon dioxide supply . 19
6.2.1 Quality . 19
6.2.2 Quantity . 19
6.2.3 Container arrangement . 20
6.2.4 Storage containers . 21
6.3 Distribution . 23
6.3.1 General. 23
6.3.2 Piping . 24
6.3.3 Fittings . 24
6.3.4 Pipe and valve support . 24
6.3.5 Valves . 25
6.3.6 Nozzles . 26
6.4 Enclosures (total flooding) . 27
6.4.1 Structural strength . 27
6.4.2 Loss through openings . 27
6.4.3 Ventilation systems . 28
6.5 Detection, actuation and control systems . 28
6.5.1 General. 28
6.5.2 Shut-down of plant and equipment . 28
6.5.3 Automatic detection . 28
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6.5.4 Operating devices . 28
6.5.5 Control equipment . 29
6.5.6 Audible alarms and visual indicators . 30
6.6 Local control (LC) and local control stations (LCS) . 31
7 Carbon dioxide flow and concentration calculations . 32
7.1 General . 32
7.2 System flow calculations . 32
7.2.1 General . 32
7.2.2 Friction losses . 32
7.2.3 Pressure drop . 32
7.2.4 Valves and fittings . 33
7.2.5 As-installed calculations . 33
7.2.6 Specific requirements . 33
7.3 Carbon dioxide concentration requirements . 33
7.3.1 Flame extinguishment . 33
7.3.2 Inerting . 34
7.4 Total flooding quantity . 34
7.4.1 General . 34
7.4.2 Design quantity . 34
7.4.3 K factor . 35
B
7.5 Design of local application systems . 38
7.5.1 General . 38
7.5.2 Carbon dioxide requirements . 38
7.5.3 Rate by area method . 39
7.5.4 Rate by volume method . 40
7.6 Duration of protection — total flooding systems . 42
7.7 System performance . 42
7.7.1 Discharge time . 42
7.7.2 Extended discharge . 43
8 Commissioning and acceptance . 43
8.1 General . 43
8.2 Tests . 43
8.2.1 General . 43
8.2.2 Enclosure check . 43
8.2.3 Review of mechanical components . 43
8.2.4 Review of enclosure integrity . 44
8.2.5 Review of electrical components . 45
8.2.6 Preliminary functional tests . 45
8.2.7 System functional operational test . 46
8.2.8 Remote monitoring operations (if applicable) . 46
8.2.9 Control panel primary power source . 46
8.2.10 Completion of functional tests . 47
8.3 Completion certificate and documentation . 47
9 Inspection, maintenance, testing and training . 47
9.1 General . 47
9.2 Inspection . 47
9.2.1 General . 47
9.2.2 Container . 47
9.2.3 Hose . 47
9.2.4 Enclosures . 47
9.3 Maintenance . 48
9.3.1 General . 48
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9.3.2 User's programme of inspection . 48
9.3.3 Service schedule . 48
9.4 Training . 48
Annex A (normative) Working documents . 49
A.1 General. 49
A.2 Working documents . 49
A.3 Specific details . 50
A.4 Completion certificate and documentation . 50
Annex B (normative) Carbon dioxide system pipe and orifice size determination . 56
Annex C (informative) System performance verification . 66
Annex D (informative) General information on carbon dioxide. 67
D.1 General. 67
D.2 Free efflux . 68
D.3 Hazards to personnel . 70
Annex E (informative) Examples of calculations . 72
E.1 Rate by volume method — Example 1 . 72
E.2 Rate by volume method — Example 2 . 73
E.3 Rate by area method . 74
E.4 Total flooding system . 74
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European foreword
This document (prEN 17966:2023) 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.
The text of ISO 6183:2022 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 17966:2023 by Technical Committee CEN/TC 191 “Fixed firefighting 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.
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oSIST prEN 17966:2023
prEN 17966:2023 (E)
Introduction
This document is intended for use by those concerned with purchasing, designing, installing, testing,
inspecting, approving, operating and maintaining carbon dioxide (CO ) extinguishing systems.
2
This document applies only to carbon dioxide fixed fire-extinguishing systems in buildings and other
premises on land. Although the general principles can apply to other uses (e.g. maritime use), for these
other uses, it is likely that additional considerations will have to be taken into account and the application
of the requirements given in this document is therefore unlikely to be fully satisfactory. General
information about carbon dioxide as an extinguishing medium is given in Annex D. This can be useful
background information for those unfamiliar with the characteristics of this medium.
It has been assumed in the preparation of this document that the execution of its provisions will be
entrusted to those persons appropriately qualified and experienced in the specification, design,
installation, testing, approval, inspection, operation and maintenance of systems and equipment, for
whose guidance it has been prepared, and who can be expected to exercise a duty of care to avoid the
unnecessary release of carbon dioxide. New requirements to minimize the need to release carbon dioxide
during testing and commissioning procedures are included in this third edition. These are linked to the
inclusion of enclosure integrity testing.
Carbon dioxide has for many years been a recognized effective medium for the extinction of flammable
liquid fires as well as fires in the presence of electrical and ordinary Class A hazards. Nevertheless, in the
planning of comprehensive schemes, it should be remembered that there can be hazards for which this
media is not suitable, and that in certain circumstances or situations there can be dangers in its use
requiring special precautions.
The use of carbon dioxide is no longer recommended for total flooding of occupied areas if more
appropriate extinguishing agents are available. EN 15004 provides requirements for other extinguishing
agents that can be more appropriately used in these areas.
It is important that the fire protection of a building or plant be considered as a whole. Carbon dioxide
systems form only a part, albeit an important part, of the available facilities. It cannot be assumed that
their adoption necessarily removes the need to consider supplementary measures, such as the provision
of portable fire extinguishers or other mobile appliances for first aid or emergency use, or to deal with
special hazards.
Advice on these matters can be obtained from the appropriate manufacturer of the carbon dioxide or the
extinguishing system. Information can also be sought from the appropriate fire authority, the health and
safety authorities, and insurers. In addition, reference needs to be made, as appropriate, to the other
national standards and statutory regulations of a given country.
It is essential that firefighting equipment be carefully maintained to ensure instant readiness when
required. Routine maintenance is liable to be overlooked or given insufficient attention by the owner of
the system. It is, however, neglected at the peril of the lives of occupants of the premises and at the risk
of crippling financial loss. The importance of maintenance cannot be too highly emphasized. Inspection,
preferably by a third party, should include an evaluation concluding that the extinguishing system
continues to provide adequate protection for the risk (protected zones as well as state-of-the-art can
change over time).
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oSIST prEN 17966:2023
prEN 17966:2023 (E)
1 Scope
This document specifies requirements and gives recommendations for the design, installation, testing,
maintenance and safety of fixed carbon dioxide firefighting systems in buildings, plants or other
structures. It is not applicable to extinguishing systems on ships, in aircraft, on vehicles or on mobile fire
appliances, or to below ground systems in the mining industry; nor does it apply to carbon dioxide pre-
inerting systems.
Design of systems where unclosable opening(s) exceed a specified area and where the opening(s) can be
subject to the effect of wind is not specified, although general guidance on the procedure to be followed
in such cases is given (see 7.4.3.2).
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 ISO 7731, Ergonomics — Danger signals for public and work areas — Auditory danger signals
(ISO 7731)
1
EN 15004:2019 , Fixed firefighting systems — Gas extinguishing systems — Part 1: Design, installation and
maintenance (ISO 14520-1:2015 modified)
EN 12094 (all parts), Fixed firefighting systems — Components for gas extinguishing systems
EN 54 (all parts), Fire detection and fire alarm systems
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
3.1
approved
acceptable to a relevant authority (3.2)
Note 1 to entry: In determining the acceptability of installations or procedures, equipment or materials, the
authority can base acceptance on compliance with the appropriate standards.
3.2
authority
organization, office or individual responsible for approving equipment, installations or procedures
1
Under revision.
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3.3
automatic/manual switch
means of converting the system from automatic to manual actuation
Note 1 to entry: This can be in the form of a manual switch on the control panel or other units, or a personnel door
interlock. In all cases, this changes the actuation mode of the system from automatic and manual to manual only or
vice versa.
3.4
clearance
air gap between equipment, including piping and nozzles and unenclosed or uninsulated live electrical
components at other than ground potential
3.5
deep-seated fire
fire involving solids subject to smouldering
Note 1 to entry: Examples of a deep-seated fire include baled, stacked or piled materials such as paper, wool and
grain.
3.6
design concentration
concentration of carbon dioxide, including a
...
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