ISO/DIS 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

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 6183
ISO/TC 21/SC 8 Secretariat: SA
Voting begins on: Voting terminates on:
2021-03-09 2021-06-01
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
ICS: 13.220.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 6183:2021(E)
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. ISO 2021
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ISO/DIS 6183:2021(E)
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ii © ISO 2021 – All rights reserved
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ISO/DIS 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 ................................................................................................................................................................................ 5

5.2.1 Normally occupied and normally unoccupied areas ........................................................................ 5

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 Specifications ...................................................................................................................................................................11

6.1.2 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 .............................................................................................................................................................................................15

6.3.1 General...................................................................................................................................................................................15

6.3.2 Piping ......................................................................................................................................................................................16

6.3.3 Fittings ...................................................................................................................................................................................16

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

6.3.5 Valves ......................................................................................................................................................................................17

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

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

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

6.4.2 Loss through openings .................. ......................................................................................................................... ..19

6.4.3 Ventilation systems .....................................................................................................................................................19

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 ...................................................................................................................................................20

6.5.4 Operating devices .........................................................................................................................................................20

6.5.5 Control equipment ......................................................................................................................................................21

6.5.6 Audible alarms and visual indicators ..........................................................................................................22

6.6 Local control (LC) and local control stations (LCS) ..............................................................................................23

7 Carbon dioxide flow and concentration calculations ..................................................................................................23

7.1 General ........................................................................................................................................................................................................23

7.2 System flow calculations .............................................................................................................................................................23

7.2.1 General...................................................................................................................................................................................23

7.2.2 Friction losses..................................................................................................................................................................24

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ISO/DIS 6183:2021(E)

7.2.3 Pressure drop ..................................................................................................................................................................24

7.2.4 Valves and fittings ........................................................................................................................................................24

7.2.5 As-installed calculations ........................................................................................................................................24

7.2.6 Specific requirements ...............................................................................................................................................25

7.3 Carbon dioxide concentration requirements.............................................................................................................25

7.3.1 Flame extinguishment ........................................................................................................................................... ...25

7.3.2 Inerting ..................................................................................................................................................................................25

7.4 Total flooding quantity ..................................................................................................................................................................26

7.4.1 General...................................................................................................................................................................................26

7.4.2 Design quantity ..............................................................................................................................................................26

7.4.3 K factor ...............................................................................................................................................................................26

7.5 Design of local application systems ...................................................................................................................................29

7.5.1 General...................................................................................................................................................................................29

7.5.2 Carbon dioxide requirements ............................................................................................................................29

7.5.3 Rate by area method ..................................................................................................................................................29

7.5.4 Rate by volume method ..........................................................................................................................................31

7.6 Duration of protection – Total flooding systems.....................................................................................................33

7.7 System performance .......................................................................................................................................................................33

7.7.1 Discharge time ................................................................................................................................................................33

7.7.2 Extended discharge ....................................................................................................................................................33

8 Commissioning and acceptance .........................................................................................................................................................34

8.1 General ........................................................................................................................................................................................................34

8.2 Tests ...............................................................................................................................................................................................................34

8.2.1 General...................................................................................................................................................................................34

8.2.2 Enclosure check .............................................................................................................................................................34

8.2.3 Review of mechanical components ..............................................................................................................34

8.2.4 Review of enclosure integrity ............................................................................................................................35

8.2.5 Review of electrical components ....................................................................................................................35

8.2.6 Preliminary functional tests .................. ..............................................................................................................36

8.2.7 System functional operational test................................................................................................................37

8.2.8 Remote monitoring operations (if applicable) ...................................................................................37

8.2.9 Control panel primary power source ..........................................................................................................37

8.2.10 Completion of functional tests ..........................................................................................................................37

8.3 Completion certificate and documentation.................................................................................................................38

9 Inspection, maintenance, testing and training...................................................................................................................38

9.1 General ........................................................................................................................................................................................................38

9.2 Inspection .................................................................................................................................................................................................38

9.2.1 General...................................................................................................................................................................................38

9.2.2 Container .............................................................................................................................................................................38

9.2.3 Hose .........................................................................................................................................................................................38

9.2.4 Enclosures ..........................................................................................................................................................................38

9.3 Maintenance ...........................................................................................................................................................................................39

9.3.1 General...................................................................................................................................................................................39

9.3.2 User's programme of inspection .....................................................................................................................39

9.3.3 Service schedule ............................................................................................................................................................39

9.4 Training ......................................................................................................................................................................................................39

Annex A (normative) Working Documents .................................................................................................................................................40

Annex B (normative) Carbon dioxide system pipe and orifice size determination ..........................................46

Annex D (informative) General information on carbon dioxide ...........................................................................................55

Annex E (informative) Examples of calculations ...................................................................................................................................60

Bibliography .............................................................................................................................................................................................................................64

iv © ISO 2021 – All rights reserved
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ISO/DIS 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 second edition cancels and replaces the first edition (ISO 6183:1990), together with ISO 5923:1989,

which have been technically revised.

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 v
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ISO/DIS 6183:2021(E)
Introduction

This International Standard is intended for use by those concerned with purchasing, designing,

installing, testing, inspecting, approving, operating and maintaining carbon dioxide (CO2) extinguishing

systems.

This International Standard applies only to carbon dioxide fixed fire-extinguishing systems in buildings

and other premises on land. Although the general principles could well apply to other uses (e.g. maritime

use), for these other uses additional considerations will almost certainly have to be taken into account

and the application of the requirements given in this International Standard 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 ISO 6183 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 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,

it ought not be forgotten, in the planning of comprehensive schemes, that there could be hazards for

which this media is not suitable, or 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. 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, though 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 will need 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).
vi © ISO 2021 – All rights reserved
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DRAFT INTERNATIONAL STANDARD ISO/DIS 6183:2021(E)
Fire protection equipment — Carbon dioxide extinguishing
systems for use on premises — Design and installation
1 Scope

This International Standard specifies requirements and gives recommendations for the design,

installation, testing, maintenance and safety of fixed carbon dioxide firefighting systems in buildings,

plant 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 16003:2008, Components for fire-extinguishing systems using gas— Requirements and test methods —

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

rigid connectors; and check valves and non-return valves
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
approved
acceptable to a relevant authority (3.2)

Note 1 to entry: In determining the acceptability of installations or procedures,

...