ISO 6183:2022

INTERNATIONAL ISO
STANDARD 6183
Third edition
2022-03
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
Reference number
© ISO 2022
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Published in Switzerland
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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
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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
B
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 .
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