ISO/FDIS 6183

Fire protection equipment -- Carbon dioxide extinguishing systems for use on premises -- Design and installation

Équipement de protection contre l'incendie -- Installations fixes d'extinction par dioxyde de carbone utilisées dans les bâtiments -- Conception et installation

General Information

• Status: Published
• ICS: 13.220.10 - Fire-fighting
• Technical Committee: ISO/TC 21/SC 8 - Gaseous media and firefighting systems using gas
• Drafting Committee: ISO/TC 21/SC 8/WG 8 - Carbon dioxide
• Current Stage: 5060 - Close of voting Proof returned by Secretariat
• Completion Date: 14-Jan-2022

RELATIONS

• Revised: ISO 6183:2009/Amd 2:2019 - ISO 6183:2009/Amd 2:2019
• Effective Date: 23-Apr-2020
• Revised: ISO 6183:2009 - Fire protection equipment -- Carbon dioxide extinguishing systems for use on premises -- Design and installation
• Effective Date: 23-Sep-2017
• Revised: ISO 6183:2009/Amd 1:2017 - ISO 6183:2009/Amd 1:2017
• Effective Date: 23-Sep-2017

Standards Content (sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 6183
ISO/TC 21/SC 8
Fire protection equipment — Carbon
Secretariat: SA
dioxide extinguishing systems for use
Voting begins on:
2021-11-19 on premises — Design and installation
Voting terminates on:
Équipement de protection contre l'incendie — Installations fixes
2022-01-14
d'extinction par dioxyde de carbone utilisées dans les bâtiments —
Conception et installation
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 6183:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2021
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ISO/FDIS 6183:2021(E)
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© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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© ISO 2021 – All rights reserved
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ISO/FDIS 6183:2021(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction .............................................................................................................................................................................................................................. vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

4 Use and limitations ............................................................................................................................................................................................ 4

4.1 General ........................................................................................................................................................................................................... 4

4.2 Uses for carbon dioxide systems ............................................................................................................................................ 4

4.3 Limitations for carbon dioxide systems .......................................................................................................................... 5

4.4 Temperature limitations ................................................................................................................................................................ 5

5 Safety ................................................................................................................................................................................................................................ 5

5.1 Hazard to personnel .......................................................................................................................................................................... 5

5.2 Safety precautions ............................................................................................................................................................................... 6

5.2.1 Normally occupied and normally unoccupied areas .......................................................................... 6

5.2.2 Warning notices for occupiable areas ............................................................................................................. 6

5.2.3 Warning notices for unoccupiable areas ....................................................................................................... 9

5.3 Electrical hazards ............................................................................................................................................................................. 10

5.4 Electrical earthing ........................................................................................................................................................................... 11

5.5 Electrostatic discharge ................................................................................................................................................................ 11

6 System design .......................................................................................................................................................................................................11

6.1 General ........................................................................................................................................................................................................ 11

6.1.1 Introduction ........................................................................................................................................................................ 11

6.1.2 Specifications ..................................................................................................................................................................... 11

6.1.3 Working documents .....................................................................................................................................................12

6.2 Carbon dioxide supply ..................................................................................................................................................................12

6.2.1 Quality ...................................................................................................................................................................................... 12

6.2.2 Quantity .................................................................................................................................................................................. 12

6.2.3 Container arrangement ............................................................................................................................................. 13

6.2.4 Storage containers ......................................................................................................................................................... 14

6.3 Distribution ............................................................................................................................................................................................ 16

6.3.1 General ..................................................................................................................................................................................... 16

6.3.2 Piping ......................................................................................................................................................................................... 17

6.3.3 Fittings ..................................................................................................................................................................................... 17

6.3.4 Pipe and valve support .............................................................................................................................................. 17

6.3.5 Valves ......................................................................................................................................................................................... 18

6.3.6 Nozzles ..................................................................................................................................................................................... 18

6.4 Enclosures (total flooding) ....................................................................................................................................................... 19

6.4.1 Structural strength ....................................................................................................................................................... 19

6.4.2 Loss through openings ............................................................................................................................................... 20

6.4.3 Ventilation systems .......................................................................................................................................................20

6.5 Detection, actuation and control systems .................................................................................................................. 20

6.5.1 General .....................................................................................................................................................................................20

6.5.2 Shut-down of plant and equipment ................................................................................................................. 20

6.5.3 Automatic detection ..................................................................................................................................................... 21

6.5.4 Operating devices ........................................................................................................................................................... 21

6.5.5 Control equipment ......................................................................................................................................................... 22

6.5.6 Audible alarms and visual indicators ........................................................................................................... 23

6.6 Local control (LC) and local control stations (LCS) ........................................................................................... 24

7 Carbon dioxide flow and concentration calculations ................................................................................................24

7.1 General ........................................................................................................................................................................................................ 24

7.2 System flow calculations ............................................................................................................................................................25

7.2.1 General ..................................................................................................................................................................................... 25

iii
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ISO/FDIS 6183:2021(E)

7.2.2 Friction losses .................................................................................................................................................................... 25

7.2.3 Pressure drop..................................................................................................................................................................... 25

7.2.4 Valves and fittings .......................................................................................................................................................... 26

7.2.5 As-installed calculations .......................................................................................................................................... 26

7.2.6 Specific requirements .................................................................................................................................................26

7.3 Carbon dioxide concentration requirements ........................................................................................................... 26

7.3.1 Flame extinguishment................................................................................................................................................ 26

7.3.2 Inerting .................................................................................................................................................................................... 27

7.4 Total flooding quantity ................................................................................................................................................................ 27

7.4.1 General ..................................................................................................................................................................................... 27

7.4.2 Design quantity ................................................................................................................................................................ 27

7.4.3 K factor ..................................................................................................................................................................................28

7.5 Design of local application systems .................................................................................................................................. 31

7.5.1 General ..................................................................................................................................................................................... 31

7.5.2 Carbon dioxide requirements .............................................................................................................................. 31

7.5.3 Rate by area method .................................................................................................................................................... 31

7.5.4 Rate by volume method ........................................................................................................................................... ..33

7.6 Duration of protection — total flooding systems ................................................................................................34

7.7 System performance ...................................................................................................................................................................... 35

7.7.1 Discharge time .................................................................................................................................................................. 35

7.7.2 Extended discharge ...................................................................................................................................................... 35

8 Commissioning and acceptance ........................................................................................................................................................35

8.1 General ........................................................................................................................................................................................................ 35

8.2 Tests .............................................................................................................................................................................................................. 35

8.2.1 General ..................................................................................................................................................................................... 35

8.2.2 Enclosure check ................................................................................................................................................................36

8.2.3 Review of mechanical components .................................................................................................................36

8.2.4 Review of enclosure integrity .............................................................................................................................. 37

8.2.5 Review of electrical components ...................................................................................................................... 37

8.2.6 Preliminary functional tests ................................................................................................................................38

8.2.7 System functional operational test .................................................................................................................39

8.2.8 Remote monitoring operations (if applicable) ......................................................................................39

8.2.9 Control panel primary power source ............................................................................................................39

8.2.10 Completion of functional tests ............................................................................................................................ 39

8.3 Completion certificate and documentation ...............................................................................................................39

9 Inspection, maintenance, testing and training ................................................................................................................40

9.1 General ........................................................................................................................................................................................................40

9.2 Inspection ................................................................................................................................................................................................40

9.2.1 General .....................................................................................................................................................................................40

9.2.2 Container ................................................................................................................................................................................40

9.2.3 Hose ...................................................................... .......................................................................................................................40

9.2.4 Enclosures .............................................................................................................................................................................40

9.3 Maintenance ........................................................................................................................................................................................... 41

9.3.1 General ..................................................................................................................................................................................... 41

9.3.2 User's programme of inspection ....................................................................................................................... 41

9.3.3 Service schedule .............................................................................................................................................................. 41

9.4 Training ...................................................................................................................................................................................................... 41

Annex A (normative) Working documents .................................................................................................................................................42

Annex B (normative) Carbon dioxide system pipe and orifice size determination .......................................49

Annex C (informative) System performance verification ..........................................................................................................57

Annex D (informative) General information on carbon dioxide .........................................................................................58

Annex E (informative) Examples of calculations .................................................................................................................................63

Bibliography .............................................................................................................................................................................................................................68

© ISO 2021 – All rights reserved
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ISO/FDIS 6183:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and

firefighting, Subcommittee SC 8, Gaseous media and firefighting systems using gas.

This third edition cancels and replaces the second edition (ISO 6183:2009), which has been technically

revised. It also incorporates the Amendment(s) ISO 6183:2009/Amd. 1:2017 and ISO 6183:2009/Amd.

2:2019.
The main changes are as follows:
— guidance on container storage has been updated;
— alerts when removing actuators have been added;
— a commissioning check list has been included in Annex A;
— pictorial examples have been added to Annex C.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2021 – All rights reserved
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ISO/FDIS 6183:2021(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.

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

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. ISO 14520 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 necessary, to

other national standards and statutory regulations of the particular 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 peril to 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).
© ISO 2021 – All rights reserved
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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 6183:2021(E)
Fire protection equipment — Carbon dioxide extinguishing
systems for use on premises — Design and installation
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 and 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.

ISO 7240-2, Fire detection and alarm systems — Part 2: Fire detection control and indicating equipment

ISO 7240-23, Fire detection and alarm systems — Part 23: Visual alarm devices

ISO 7731, Ergonomics — Danger signals for public and work areas — Auditory danger signals

ISO 8201, Alarm systems — Audible emergency evacuation signal — Requirements

ISO 14520-1:2015, Gaseous fire-extinguishing systems — Physical properties and system design — Part 1:

General requirements

ISO 16003, Components for fire-extinguishing systems using gas — Requirements and test methods —

Container valve assemblies and their actuators; selector valves and their actuators; nozzles; flexible a

...