SANS 14520-Compliant
High Pressure Inert Gas Suppression Protecting Critical Infrastructure Across Gauteng
Morimi Fire Solutions designs and installs high-pressure inert gas fire suppression systems using IG-55 and IG-541 agents for mission-critical environments across Johannesburg, Pretoria, and Gauteng.
Stored at approximately 300 bar, these systems deliver rapid, clean suppression without heat, water, or chemical residue, making them the preferred choice for data centres, server rooms and facilities housing irreplaceable equipment.
High Pressure Suppression
How It Works
Storage
IG-55 (argon/nitrogen) and IG-541 (nitrogen/argon/CO₂) agents are stored in high-pressure cylinders at approximately 300 bar, compact storage with a large suppression capacity.
Detection
The system interfaces with addressable smoke and heat detectors, triggering automatically within seconds of detection to limit fire damage and protect assets.
Activation
On confirmed fire signal, solenoid valve-controlled cylinder manifolds open and the inert gas discharges at high velocity into the protected enclosure.
Oxygen Displacement
The inert gas reduces oxygen concentration to approximately 12–14%, below the threshold for combustion, without reaching levels harmful to occupants during brief evacuations.
Critical Environments
Where High Pressure Inert Gas Suppression Is the Right Choice
Data Centres & Colocation Facilities
Server Rooms & Network Closets
Museums, Archives & Cultural Heritage Sites
Control Rooms, Substations & Industrial Equipment Bays
Understanding Your Options
IG-55 vs IG-541
| IG-55 (Argonite) | IG-541 (Inergen) |
| 50% Argon / 50% Nitrogen | 52% Nitrogen / 40% Argon / 8% CO₂ |
| Highest cylinder density — more storage per m² | CO₂ component stimulates faster breathing — slightly safer for occupied spaces |
| Zero ozone depletion potential — fully compliant with Kyoto Protocol | Zero ozone depletion potential — widely specified for LEED-certified buildings |
Both agents are SANS 14520-compliant, leave zero residue, and cause no damage to electronics, documents, or equipment.
Morimi Fire Solutions will recommend the optimal agent based on your room volume, occupancy profile, and cylinder storage constraints.
FAQ
Frequently Asked Questions – High Pressure Inert Gas Suppression
A high pressure inert gas system stores naturally occurring gases, typically argon, nitrogen, or a combination — in cylinders at pressures of around 300 bar. When a fire is detected, the gas is rapidly discharged into the protected space, reducing oxygen levels to a point where combustion can no longer be sustained, without endangering human life during brief evacuations.
Both systems are suitable for occupied and unoccupied enclosed spaces. IG-55 is generally preferred when maximum cylinder density is needed, while IG-541’s CO₂ component can marginally improve physiological safety in occasionally occupied spaces. Our team will perform a free site assessment and design calculation to recommend the optimal system for your specific application.
A typical installation for a server room or data centre of 50–200 m² takes between 5 and 10 working days, depending on civil works and building access requirements. Morimi Fire Solutions manages the full process, from design submission and SAQCC sign-off through to final commissioning and integrity testing.
Yes. SANS 14520 requires periodic inspection, maintenance, and cylinder pressure checks. Morimi Fire Solutions offers annual maintenance contracts covering all scheduled inspections, pressure verification, valve testing, and system re-commissioning after any discharge event.
Yes, at the design concentrations specified in SANS 14520, inert gas systems are safe for brief human exposure during emergency evacuation. Unlike CO₂ systems, inert gas agents do not pose asphyxiation risks at design concentration levels, making them suitable for data centres and other facilities where staff may be present.
Get hold of us
Contact Us
Need a SAQCC-registered fire suppression specialist in Gauteng? Morimi Fire Solutions provides free site assessments, custom system design, professional installation, and ongoing maintenance across Johannesburg, Pretoria, Germiston, and surrounding areas.
Contact us today to request a quote or schedule a fire risk assessment.
79 Watt Street, Meadowdale, Germiston, Gauteng, South Africa