Applications
Gas Fire Suppression for Data Centers and Server Rooms
A clean, residue-free method that protects server rooms without damaging electronic equipment.
Engineering-Led Solutions
Gas Fire Suppression Systems: Design, Installation and Maintenance
We put out fires with gas where water would cause damage. End-to-end engineering for FM-200, FK-5-1-12 (Novec 1230), IG-541, IG-55 and CO2 gas fire suppression systems since 2019, from site survey to maintenance, run from our Istanbul base for projects across Türkiye and abroad.
Get support from our expert team for your project.
Phone+90 212 945 7465WhatsApp+90 533 291 29 76E-mailinfo@gazliyanginsondurme.comStandards and approvalsApproval scope varies by product and model; see the certificates page for details.
- TS EN 15004Design standard
- ISO 14520Design standard
- NFPA 2001Design standard
- ULApproval body
- FMApproval body
- LPCBApproval body
Solutions
Stand Alone and Multi-Zone Architectures
From independently protecting one critical room to managing several zones from a shared cylinder bank — two core architectures.
Applications
Protection Built for Your Sector
From data centers to ship engine rooms, from museums to industrial plants — the right system for each risk profile.
Get a Quote
Share details about your protected area — we'll suggest a system and have our engineering team respond quickly.
Fundamentals
What Is Gas Fire Suppression?
A gas fire suppression system detects a fire in an enclosed space and automatically discharges a calculated quantity of extinguishing gas into that space. The gas puts the fire out either by lowering the oxygen level (inert gases and CO2) or by interrupting combustion chemically and thermally (clean agents such as FM-200 and FK-5-1-12). No water, foam or powder is used, so the protected equipment is left without water damage or residue.
Key Facts
- No water, foam or powder is used, so the equipment is left without water damage or residue.
- Extinguishing gases do not conduct electricity and reach inside cabinets and racks.
- The gas quantity is calculated from the room volume, fuel class and enclosure tightness.
- Clean agent and inert gas systems are designed to EN 15004, ISO 14520 and NFPA 2001.
How does it work?
Detectors pick up smoke or heat, the control panel raises the alarm and runs a short delay so people can leave. The gas then flows from the cylinders through the pipework and nozzles into the room, and the design concentration is held long enough to prevent re-ignition. See the steps below and our guide to how gas fire suppression works.
Where is it used?
Data centers and server rooms, electrical and UPS rooms, telecom exchanges, archives and museums, generator and machinery rooms, power facilities and ship engine rooms are the most common applications.
When is it the right choice?
When the protected space is enclosed and its openings can be controlled, when the equipment or documents inside would be damaged by water, and when downtime is costly. Sprinklers usually protect the building as a whole; the two systems complement each other (gas suppression vs sprinklers).
How are the gases classified?
There are three main groups: chemical clean agents (FM-200 / HFC-227ea, FK-5-1-12 / Novec 1230), inert gases (IG-541, IG-55, IG-01, IG-100) and CO2. Clean agents need fewer cylinders; inert gases occur naturally and need more cylinders; CO2 is used only in unoccupied spaces. Compare all types of gas suppression systems and the difference between FM-200 and FK-5-1-12.
Why is it used for sensitive equipment?
Extinguishing gases do not conduct electricity, reach inside cabinets and racks, and leave nothing behind after discharge. Because no water touches the equipment, no clean-up or drying is needed; once the room is ventilated, the protected equipment can be restarted quickly.
Which standards apply?
Clean agent and inert gas systems are designed to EN 15004, ISO 14520 and NFPA 2001; the gas quantity is calculated from the room volume, fuel class and enclosure tightness. Room tightness is verified by a door fan test. Short definitions are in our gas suppression glossary.
Fire protection systems
Beyond gas suppression: fire protection for the whole building
While gas suppression protects the critical rooms, we also design, install and maintain sprinkler, fire pump, foam and kitchen hood suppression systems for the rest of the building, so the whole facility is protected under one engineering approach.
Sprinkler (Water-Based) Fire Suppression Systems
Automatic sprinkler systems with water supply, fire pumps, alarm valves and sprinkler heads for whole-building fire protection: design, installation and maintenance.
Fire Pump Systems
Electric, diesel and jockey fire pump sets for sprinkler, hydrant and hose cabinet systems: capacity selection, installation, commissioning and maintenance.
Foam Fire Suppression Systems
Foam suppression for flammable liquid fires: foam concentrate types, low, medium and high expansion, monitors, foam chambers and high-expansion generators.
Kitchen Hood Fire Suppression Systems
Wet chemical kitchen hood suppression for commercial kitchens: automatic protection of cooking appliances, hood and duct; design, installation and maintenance.
Products
The right extinguishing gas for every risk profile
The extinguishing gases and panel/detection solutions used in gas fire suppression systems, each engineered to a specific risk profile through hydraulic calculation.
FM-200
FM-200 (HFC-227ea) Clean Agent Suppression System
FM-200 (HFC-227ea) is a colorless, odorless, electrically non-conductive clean agent that discharges in under 10 seconds and extinguishes fire mainly by absorbing heat; with its design concentration calculated below human-safety limits, it can be used in occupied spaces together with a pre-discharge alarm and evacuation procedure.
FK-5-1-12
FK-5-1-12 (Novec 1230) Clean Agent Suppression System
FK-5-1-12 is a fluoroketone-based clean agent that discharges in under 10 seconds and carries an exceptionally low environmental footprint (GWP of 1, atmospheric lifetime of about 5 days); because its design concentration is calculated below its NOAEL (10%), it can be used in occupied spaces together with a pre-discharge alarm and evacuation procedure.
IG-541
IG-541 (Inergen) Inert Gas Suppression System
IG-541 (Inergen) is a natural inert gas blend of 52% nitrogen, 40% argon, and 8% carbon dioxide that extinguishes fire by lowering ambient oxygen to a level that can no longer sustain combustion, while remaining breathable for a limited time; its CO2 component stimulates respiration, but the space is still alarmed and evacuated before discharge.
IG-55
IG-55 (Argonite) Inert Gas Suppression System
IG-55 (Argonite) is a CO2-free inert gas suppression agent made of 50% nitrogen and 50% argon; it extinguishes fire by lowering ambient oxygen below the level needed to sustain combustion, without damaging electronics or sensitive materials.
CO2
CO2 Gaseous Fire Suppression System
A CO2 gaseous fire suppression system is a high-pressure total flooding system that extinguishes Class A, B, and C fires by lowering the oxygen level in an enclosed space below the point where combustion can continue; because that concentration is dangerous to breathe, CO2 is used only in unoccupied or evacuated spaces.
In-Cabinet Gaseous Suppression System
An in-cabinet gaseous suppression system is a compact unit installed directly inside an electrical panel or equipment cabinet, triggered by a pressurized polymer detection tube that bursts at roughly 100–110°C; it discharges FM-200, Novec 1230, or CO2 right at the heat source without needing a separate electronic detection system.
Types of gas fire suppression systems at a glance
| System | Gas family | How it extinguishes | Occupied spaces | Typical use |
|---|---|---|---|---|
| FM-200 (HFC-227ea) | Chemical clean agent (HFC) | Mainly absorbs heat; also acts chemically on the chain reaction | Suitable: design concentration below the NOAEL (9%), with pre-discharge alarm and evacuation | Data centres, archives, museums, technical rooms |
| FK-5-1-12 (Novec 1230) | Chemical clean agent (fluoroketone) | Mainly absorbs heat | Suitable: design concentration below the NOAEL (10%), with alarm and evacuation | Data centres and server rooms; projects that need a low GWP (1) |
| IG-541 (Inergen) | Inert gas blend (52% nitrogen, 40% argon, 8% CO2) | Dilutes oxygen; typically to about 12–15% | Suitable: within the NFPA 2001 concentration and exposure-time limits, with alarm and evacuation | Occupied technical spaces, museums and archives |
| IG-55 (Argonite) | Inert gas (50% nitrogen, 50% argon) | Dilutes oxygen; level depends on the design concentration | Suitable: same NFPA 2001 limits as IG-541, with alarm and evacuation | Control and electrical rooms, switchgear |
| CO2 (carbon dioxide) | Carbon dioxide | Lowers oxygen below the level that sustains combustion | Not suitable: unoccupied or evacuated spaces only | Engine and generator rooms, paint booths, industrial processes |
The final choice of gas is an engineering decision that weighs occupancy, cylinder-room space, environmental priorities and code requirements together. We compare the two most common clean agents in FM-200 vs Novec 1230.
How the System Works
From detection to suppression: a chain that acts in seconds
- 01
Early Detection
Aspirating or point-type detectors pick up the first signs of smoke or heat within seconds of ignition.
- 02
Alarm and Pre-Discharge Delay
The control panel triggers visual/audible alarms; a short pre-discharge delay allows personnel to evacuate.
- 03
Gas Discharge
Through the selector valve and manifold, a calculated quantity of extinguishing gas disperses evenly across the protected space via the nozzles.
- 04
Suppression and Hold Time
Oxygen levels are lowered — or the combustion reaction is chemically interrupted — and the design concentration is held for a period to prevent re-ignition.
Solutions
Single zone, or a shared multi-zone architecture?
Two core system architectures, chosen by the number and layout of protected areas: Stand Alone, protecting one zone independently, and Multi-Zone, serving several zones from a single shared cylinder bank.
Stand-Alone (Single-Zone) Inert Gas Suppression System
A Stand-Alone system is a self-contained, pre-engineered inert gas suppression package dedicated to a single zone or room, complete with its own cylinder bank, pipe network, control panel, and detection units.
Multi-Zone Inert Gas Suppression System
A Multi-Zone system is an inert gas suppression architecture that protects several fire-separated zones from a single shared cylinder bank, each zone routed through its own dedicated selector valve; because the cylinder bank only needs to be sized for the largest single zone, it delivers a clear space and cost advantage.
Applications
Sector-specific solutions for critical spaces
From data centers to ship engine rooms, from museums to industrial plants, every sector has its own fire risk profile and protection requirements.
Gas Fire Suppression for Data Centers and Server Rooms
Gas fire suppression in data centers delivers a clean, residue-free extinguishing method that protects electronic equipment, using agents approved for server rooms where people may be present.
Gas Fire Suppression Systems for Industrial Facilities
Gas fire suppression in industrial facilities provides effective, water-free protection for control rooms, cable galleries, and process equipment where combustible dust, chemical, and electrical fires can escalate rapidly.
Gas Fire Suppression Systems for Power Generation Facilities
Gas fire suppression in power generation and distribution facilities protects transformer, switchgear, and control equipment with a residue-free, electrically non-conductive extinguishing method that keeps critical systems in service.
Gas Fire Suppression Systems for Metro, Airport, and Mass Transit
Gas fire suppression in metro, airport, and mass transit facilities protects signaling, electrical, and communication rooms in underground and enclosed spaces where passenger density is high and evacuation options are limited.
Gas Fire Suppression Systems for Shopping and Lifestyle Centers
Gas fire suppression in shopping and lifestyle centers protects electrical distribution rooms, transformer cells, and other high-density equipment spaces as a targeted layer complementing the building's main sprinkler protection.
Gas Fire Suppression Systems for Marine and Shipping
Gas fire suppression on ships puts out fires without water in enclosed spaces with limited escape routes, such as the engine room; an audible and visual alarm sounds before discharge, and the gas is released only after the time allowed for evacuating the space.
Services
From site survey to periodic maintenance: a complete engineering process
From site survey to engineering calculation, from installation to periodic maintenance — services covering the full lifecycle of a gas fire suppression system.
- 01Site Survey Service
The site survey is the first step of a gas fire suppression project — an on-site inspection of the protected space's physical, architectural, and infrastructure conditions that grounds the design in real, verified data.
- 02Gas Suppression System Design and Engineering
Design and engineering is the standards-compliant engineering phase where pipe diameter, nozzle selection, and cylinder quantity are determined from site data through hydraulic flow calculation.
- 03Material Supply Service
Material supply is the sourcing of the cylinders, valves, piping, nozzles, control panels, and detection devices specified in the design, all as internationally certified products.
- 04Gas Suppression System Installation (Mechanical and Electrical)
Electrical and mechanical installation is the physical, on-site build-out of the suppression system's piping, cylinder racks, nozzles, control panel, and detection wiring, executed exactly to the engineering project.
- 05Commissioning and Supervision Service
Commissioning and supervision is the final verification phase where the entire detection-to-release chain of an installed gas suppression system is tested and installation quality is supervised throughout the project.
- 06Room Integrity Construction Service
Room integrity construction is the structural improvement work that physically seals a protected space's wall, ceiling, and floor penetrations so the suppression gas stays inside the volume for the required hold time.
- 07Room Integrity Testing (Door Fan Test) Service
Room integrity testing (the door fan test) uses a fan mounted in the protected space to create a pressure differential, calculating exactly how long the suppression gas will actually remain in the room — without an actual gas discharge.
- 08Hydrostatic Testing and Refill Service
Hydrostatic testing and refill verifies the pressure integrity of gas suppression cylinders at the intervals required by pressure vessel regulations, then refills cylinders that pass and returns them to service.
- 09Gas Suppression System Periodic Maintenance
Periodic maintenance is an on-site inspection service, performed at least twice a year, that checks a gas fire suppression system's pressure levels, detection function, valve condition, and overall readiness to keep it ready to activate at all times.
Why GYS?
Engineering discipline, backed by field experience
End-to-End Accountability
From site survey to engineering calculation, from installation to periodic maintenance — we run the entire process with our own team.
Certified Quality
Our ISO 9001, ISO 14001, ISO 45001 and ISO 10002 certifications back our quality, environmental, safety and customer satisfaction management.
The Right Gas, in the Right Place
From CO2 to IG-541, we select the right agent among five gas families through engineering calculation matched to your risk profile.
Proven Field Experience
From aviation to automotive manufacturing, from hospitality to defense, we've delivered 55 reference projects across many sectors.
Knowledge Center
Knowledge Center
Engineering-level resources on how gas fire suppression systems work, design criteria, standards and testing methods.
Clean Agent Fire Suppression Systems: What They Are and Which Agents Are Used
A clean agent fire suppression system extinguishes fire by discharging an electrically non-conductive gas that leaves no residue (FM-200, FK-5-1-12, IG-541 or IG-55) into an enclosed space; because the design concentration is kept below human safety limits, it can be used in occupiable areas with a pre-discharge alarm and evacuation.
How Gas Fire Suppression Works
Gas fire suppression systems remove at least one of the conditions a combustion reaction needs to continue by flooding the protected space with an extinguishing gas; inert gases (IG-541, IG-55) dilute oxygen, chemical clean agents such as FM-200 and FK-5-1-12 primarily absorb heat and interrupt the chain reaction, and CO2 combines cooling with aggressive oxygen displacement.
Design Concentration, Agent Quantity Calculation, Discharge Time and Hold Time
Design concentration is the target gas percentage calculated to extinguish a given fuel class; discharge time is the maximum time defined for reaching most of that concentration; hold time is the minimum period the extinguishing atmosphere must remain in the protected space before ventilation, to prevent re-ignition.
References
From aviation to hospitality: real completed projects
From Trabzon Airport to Hilton Bodrum, from Arkas Railport to ABB power plants — a look at completed projects across a range of sectors.
Service Area
Based in Istanbul, delivering gas fire suppression across Türkiye and the region
Our base is in Avcılar, Istanbul. Our own team carries out site surveys, design, installation, commissioning and periodic maintenance in Istanbul and the Marmara region and on projects across Türkiye. Our references include facilities in cities such as Trabzon, Bodrum, Bursa, Diyarbakır, Elazığ, Sakarya, Bandırma and Kocaeli.
Abroad, we serve projects in Northern Cyprus, Georgia, Azerbaijan, Uzbekistan, Turkmenistan, Kazakhstan, Iraq and Iran. Project scope and site logistics are agreed during the survey.
Frequently Asked Questions
Gas fire suppression systems: frequently asked questions
Are gas fire suppression systems harmful to people?
It depends on the gas. Clean agents such as FM-200 and FK-5-1-12 (Novec 1230) can be used in occupiable spaces when the design concentration is calculated below their safety limit (NOAEL). Inert gases such as IG-541 lower oxygen to a level at which fire cannot continue but which can be breathed for a short time. CO2, on the other hand, is harmful at extinguishing concentrations and is used only in unoccupied or evacuated spaces. Whatever the gas, an alarm sounds before discharge and the space is evacuated.
Which extinguishing gas should I choose?
The choice depends on whether people are present, how much space is available for the cylinder room, environmental priorities and the equipment being protected. Chemical clean agents (FM-200, FK-5-1-12) protect the same volume with fewer cylinders; inert gases (IG-541, IG-55) have a near-zero global warming potential but need more cylinders. See our inert gas vs chemical clean agent comparison for details.
What determines the cost of a gas suppression system?
The main cost drivers are the protected volume, the chosen gas, the number of zones and the system architecture (Stand Alone or Multi-Zone), the detection and control scope, the pipe route and how airtight the room is. That is why a firm price is given after a site survey and engineering calculation. Our gas suppression cost guide explains every factor.
How often do gas suppression systems need maintenance?
Periodic maintenance is carried out at least twice a year: cylinder pressure and contents, detection and the control panel, valves and actuation devices are checked. Because building work can change how well a room holds the gas, room integrity should also be verified regularly. See our periodic maintenance service.
Which standards are gas suppression systems designed to?
Clean agent and inert gas systems are designed to EN 15004, ISO 14520 and NFPA 2001, CO2 systems to carbon-dioxide-specific rules such as NFPA 12, and components are tested and approved by independent bodies such as UL, FM and LPCB. Our standards and approvals guide explains what each covers.
Do you work outside Istanbul?
Yes. From our base in Avcılar, Istanbul we deliver projects across Türkiye and in Northern Cyprus, Georgia, Azerbaijan, Uzbekistan, Turkmenistan, Kazakhstan, Iraq and Iran. Projects in different cities, such as Trabzon Airport, Hilton Bodrum and Oyak Renault Bursa, are among our references.
Get support from our expert team for your project.
Phone+90 212 945 7465WhatsApp+90 533 291 29 76E-mailinfo@gazliyanginsondurme.comLet's identify the right system for your project
Share your protected-area details and our engineering team will respond within 24-48 hours.