ARGON Gas Fire Extinguishing System

ARGON Gas Fire Extinguishing System LPG INERT® IG-01 (Argon) is an inert gas naturally presents in the atmosphere, Therefore its green- house effect is nil and its ozone layer depletion potential is zero. It is chemically inert, non- conductive, colourless, odourless and Ńavourless. Argon is no corrosive and may be used at normal temperatures with such materials as nickel, steel, stainless steel, copper, brass, bronze and plastics.

LPG INERT® IG-01 extinguishing systems are based in the principle of reducing the oxygen concentration inside the protected hazard. The oxygen concentration is minimized by the application of Argon until it reaches a level where combustion is no longer supported. Each system is designed so as to decrease oxygen to a specific level. When discharged, Argon is quickly and uniformly distributed within the enclosure, achieving design concentration in 60 seconds. Discharge is through valves fully developed by LPG and approved by the most renowned independent approvals organizations. They offer great Ńexible adaptability for all actuation and release systems currently used in the market, even allowing combinations of several of them. The design of the system protects against accidental actuation due to any small leak.

- Natural gas present in the atmosphere
- Design in compliance with ISO 14520, NFPA 2001 and CEA 4008
- Suitable for occupied areas
- Electrically non- conductive
- No residue to clean up after the discharge
- More economical and less storage space
- Zero Ozone Depletion Potential
- No greenhouse effect
- No decomposition products

They also allow checking and maintenance of all critical elements contained in a fixed extinguishing system, at the time of commissioning and later for system preventive maintenance, thus preventing the risk of accidental discharge. As a general rule, extinguishing concentration is achieved when oxygen contents in the air is reduced from its usual level of 20,9% to values lower than 15% depending on the combustible products.

LPG INERT® IG-01 is stored in high-pressure cylinders in the form of compressed gas, thus space required for such cylinder storage depends on pressure and capacity. IG-01 fire extinguishing systems are designed for a cylinder filling pressure of 200/300 bar. LPG uses cylinders of 80 lt. and 140 lt. capacity thereby, optimazing in space and costs.

Although the method LPG INERT® IG-01 systems use to extinguish fires is the same as the method used by CO2 (reduction of oxygen concentration within the hazard), IG-01 is safe for use in occupied areas and excellent visibility is maintained during discharge.

LPG INERT® IG-01 is ideal for the protection of archives, museums, libraries and any other hazard including valuable or unique property. Likewise it is suitable for the protection of computer rooms, telephone exchange equipment and any other electrical installation that may present a fire hazard.

  500 m3 1.000 m3
  200Bar 300Bar 200Bar 300Bar
 Design concentration (%) for Class A Fires 41,9 41,9 41,9 41,9
 Concentration factor at 20°C (m3/m3 for Class A Fires
20º C (m3/m3)
0,534 0,534 0,534 0,534
 Quantity required m3 267 267 534 534
 Filling pressure at 15°C (bar) 200 300 200 300
 Number of CYLINDERS 80 lt. 17 12 33 23


  • Chemical name Argon
  • Chemical formula Ar
  • Denomination according to ISO 14520, and NFPA 2001 IG-01
  • Molecular weight 39.9
  • Boiling point at 1.013 bar -185,90 °C
  • Critical temperature -122,30 °C
  • Critical pressure 49 bar
  • Maximum filling pressure 200/300 bar
  • Design concentration for heptanes 51%
  • Flooding factor for heptane at 20°C 0,701 m3/m3
  • Design concentration for surface fires class A (ISO) 41,9%
  • Flooding factor for surface fires class A (ISO) 0,534 m3/m3
  • Design concentration for class A higher Fires (ISO) 48,4 %
  • Flooding factor for class A higher Fires (ISO) 0,650 m3/m3
  • Design concentration for class A Fires (NFPA) 38,7 %
  • Flooding factor for class A Fires (NFPA) 0,481 m3/m3
  • NOAEL 43 %
  • LOAEL 52 %
  • Maximum concentration in a 5' exposure 43 %
  • Ozone depletion potential 0
  • Greenhouse effect potential 0