An inert gas system protects a room with gases taken from the air, nitrogen, argon and a little CO2, which bring the oxygen down below the level a fire needs while leaving enough for people to get out. They leave no residue, have zero ozone depletion and zero global warming potential, and one cylinder bank can protect several rooms. FPS supplies and installs inert gas systems from Ceasefire, HD Fire and Honeywell.
Air holds about 21 percent oxygen. An inert gas system floods the room until the oxygen falls to between about 10 and 14 percent, the range Honeywell lists for IG-541: too little for most fires to keep burning, but enough for people to leave during the discharge.
The names say what is in the cylinder: IG-01 is argon, IG-100 is nitrogen, IG-55 is half argon and half nitrogen, and IG-541 is 52 percent nitrogen, 40 percent argon and 8 percent CO2. The gases come from the air and go back to it.
The trade off is space. Inert gas is stored as a compressed gas at 200 or 300 bar, so it needs more cylinders than a clean agent for the same room. In return, one cylinder bank with selector valves can protect several rooms.
Ceasefire offers inert gas systems with CO2, nitrogen, argon or blends of them, VdS approved and scalable up to 240 cylinders. HD Fire HD-INERTSYS works with IG55, IG541, IG100 and IG01 in 80 and 140 litre cylinders at 200 or 300 bar, with selector valves so one bank covers several areas. Honeywell IG-541 comes as a stand-alone system for one space or a multi zone system, FM approved and UL listed.
| Model | Agent, release and approvals |
|---|---|
| Ceasefire Inert Gas Fire Suppression System (VdS Approved) | Inert gas, Total flooding, VdS approved, Up to 240 cylinders |
| HD Fire HD-INERTSYS Inert Gas Suppression System (IG55, IG541, IG100, IG01) | Inert gas IG55, IG541, IG100, IG01, 80 and 140 litre cylinders, 200 or 300 bar, VdS... |
| Honeywell IG-541 Inert Gas Fire Suppression System | IG-541, Inert gas, 200 and 300 bar, Class A, B and C fires |
Total flooding system using inert gases, CO2, nitrogen, argon or blends of them, to bring oxygen below the level a fire needs while leaving enough for life. Ceasefire lists the system as VdS approved and scalable up to 240 cylinders.
Sizes: 80 and 140 L
A clean agent system that protects hazard areas with inert gas, using IG55, IG541, IG100 or IG01 stored in 80 and 140 litre cylinders. It carries VdS approval and is designed with VdS calculation software.
Sizes: 30 L, 50 L, 80 L, 140 L
An inert gas system that puts out class A, B and C fires by lowering the oxygen level in the room, using a blend of 52% nitrogen, 40% argon and 8% CO2. It comes as a stand-alone system for one space or as a multi-zone system.
Inert gas suits large rooms and sites with several rooms to protect, where space can be set aside for a cylinder bank. For one small room, a clean agent system usually takes less space.
Plan for pressure relief: as the gas floods in, the room pressure rises, so a pressure relief damper is fitted to the wall. Honeywell includes them in its stand-alone kit.
We design the system, size the cylinder bank, the selector valves and the relief vents, install and commission it, and maintain it under an AMC.
We handle your complete Fire NOC application and renewal: documentation, liaison with the MP Fire Department and compliance support.
Try "landing valve", "Apollo call point", "9 kg ABC" or a model code.
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