IS 15528:2004 is the Indian Standard (BIS) for gaseous fire extinguishing systems - carbon dioxide total flooding and local application ( sub-floor and in-cabinet), high and low pressure (refrigerated) systems. This standard specifies requirements for the design, installation, testing, inspection, and maintenance of carbon dioxide (CO2) fire extinguishing systems. It covers total flooding systems for enclosures and local application systems for specific equipment, addressing both high-pressure cylinders and low-pressure refrigerated storage.
Gaseous Fire Extinguishing Systems - Carbon Dioxide Total Flooding and Local Application ( Sub-Floor and In-Cabinet), High and Low Pressure (Refrigerated) Systems
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Minimum CO2 design concentration for surface fires (Class A & B) | 34% by volume | 34% by volume | NFPA 12:2021, EN 15004-5:2017 |
| Minimum CO2 design concentration for deep-seated fires | Typically 50% by volume (can be higher for specific hazards) | 50% by volume (can be higher for specific hazards such as rolled paper or fur storage) | NFPA 12:2021, EN 15004-5:2017 |
| Maximum discharge time for total flooding systems (to reach 95% agent concentration) | 60 seconds | 60 seconds | NFPA 12:2021, EN 15004-5:2017 |
| Maximum discharge time for local application systems (to reach 95% agent concentration) | 30 seconds | 30 seconds | NFPA 12:2021, EN 15004-5:2017 |
| Minimum CO2 retention time for deep-seated fires (post-discharge) | 20 minutes (or longer depending on hazard) | 20 minutes (or longer for specific hazards, e.g., until fire is confirmed extinguished) | NFPA 12:2021, EN 15004-5:2017 |
| Storage temperature range for low-pressure (refrigerated) CO2 systems | -18°C to -21°C | Approx. -18°C (0°F) | NFPA 12:2021, EN 15004-5:2017 |