Nitrogen Gas Fire Suppression System
GAS SUPPRESSION SYSTEM IN MARKET
Halons
Halon 1301, Halon 1211, Halon 2402
Carbon
Dioxide (CO2) Halon alternatives
Halocarbon
FM200 (HFC-227ea), FE13 (HFC-23), NAF S-III (HCFC-123 Blend A)
Inert gas
Inergen (IG-541), Argonite (IG-55),
NN100 (IG-100)
APPLICATIONS • No tolerance to downtime acceptable • For expensive and critical equipment • For irreplaceable items (historical items, clients data) Telecommunication room Control Room Data center Electrical room Generator room Mechanical room Cable room Archives Art works storage
Agent: Nitrogen gas only Design oxygen concentration: 12.5 % Vol. Storage cyl. pressure: 30 MPa Discharge time: 60 seconds (90% or more) Pilot cyl. pressure: 10.8 MPa Ambient temperature : -20 to 55 C (cyl. room) Max. pressure in piping: 10.8 MPa
GOOD EXTINGUISHING PERFORMANCE
NN100 put out fire by depleting oxygen concentration to 12.5% Fires are extinguished when the oxygen concentration is below 14%
Longer life time for fire suppression The specific weight of nitrogen gas is as heavy as that of the air,
which creates an even distribution for longer time of gases in a room Oxygen concentration ch ange with t ime ) % ( n o i t a r t n e c n o c 2 O
Discharge
Test ro om size: 5 x 5 x 8H = 200m 3
Sampling Point Height from Floor: 0.5 m, 2.0 m, 3.9 m, 6.0 m, 7.5 m
Time (sec.)
NN100 SAFE SYSTEM FOR HUMANS Oxygen level: Oxygen concentration
(NFPA 2001) Above 12%
10 to 12%
Below 10%
Normally occupant allowance
Occupied
Occupied
Unoccupied
Limited human exposure time
5 min.
3 min.
30 sec.
NN100 “Real” oxygen concentration will be between 10 to 12.5%
Nitrogen itself:
Not toxic No toxic byproduct is generated
Oxygen 21%
Nitrogen 78%
Others 1%
Before discharge
12.5%
86.5% After discharge
Gas proportion in the air
1%
IMPACT TO PROPERTY Inert gas
No chemical impact Little thermal impact
Halocarbon
HF is strongly corrosive gas which might damage property
NRC (National Research Council Canada) A computer card, after exposure to more than 500 ppm of HF, had a total loss of functionality
VISUAL DISTURBANCE Inert gas :
Stored in the form of gas. No mist is generated – clear visibility, which enables trapped person escape easily
Halocarbon : Agent is stored in the form of liquid.
Sudden vaporization takes place and causes condensation in the air. Volumes of mist is generated
Poor Visibility
Condensation on Valuables
FRIENDLY TO THE ENVIRONMENT NN100: Zero ozone depletion potential Zero global warming potential
ODP : (Halon1301 = 1)
NAF S-III (HCFC-123) = 0.044
GWP : (CO2 = 1)
FM200 (HFC-227ea) = 2050 FE13 (HFC-23) = 11700 Inergen (IG-541) = 0.08
SPACE AND COST SAVING Cylinder room space and Gas cost (refilling) Name
NN100
Room volume
Inergen Argonite
FM200
1000 m3
Required Gas volume
470 m3
470 m3
550 m3
592 kg
Gas volume per cylinder
20.3 m3
15.7 m3
15.8 m3
60 kg
Number of cylinder required
23
30
35
10
Gas cost per cylinder
A
2.25A
1.63A
30A
Total gas filling cost
23A
68A
57A
300A
Gas availability
(Comparison among Internationally approved system for class A fire) (Gas price comparison in Japan)
Nitrogen gas Industrial use Abundant supply Locally available
Other gas Inergen, FM200
Proprietary formula gas Refilling through original supplier
Argonite, FM200
INSTALLATION RECORD 180 169
151
160 159 140
158
135 TOTAL
120 106 100
NITROGEN 100
88
INERGEN FM200
80
FE13 60
64
ARGONIT E
40 28
30
20 3 0 1995
1996
1997
1998
1999
2000
Project approval in Japan
NN100 have been installed in overseas country such as Qatar, UAE, Kuwait, Philippine, Thailand, Indonesia, Vietnam, Malaysia, China, Taiwan, India and etc.
INTERNATIONAL RECOGNITION Authorized quality and performance
United Nations Environment Program (UNEP) Environment Protection Agency (EPA)
International Standardization Organization (ISO) National Fire Protection Association (NFPA)
Underwriters Laboratories Inc (UL)
Engineered type
Multiple zone protection from a cylinder room, which reduce number of cylinder required. Flexibility in designing allows it to fit most rooms.
Packaged type
Save-space is realized because of no cylinder room required. No big plumbing work is necessary which reduces installation cost.
