INERGEN is a mixture of nitrogen, argon and carbon dioxide, and
has been specially developed to provide fire protection for
sensitive electrical and electronic instruments and equipment.
How
does INERGEN work?
INERGEN extinguishes fire by reducing the oxygen
level in a room to below 15% (the point at which
most combustibles will no longer burn).
Simultaneously the patented carbon dioxide in
INERGEN protects anyone that may be trapped in the
fire area from the effects of the lowered oxygen
levels.
Gas suppression systems are extensively used in
electronic data protection and electrical system
switch environments. Systems comprise electrical
detection linked to a bank of cylinders where the
gas is stored ready for discharge into the fire
area.
Inergen Clean
Agent Fire Suppression Systems are completely
environmentally friendly and safe to use in enclosed
areas where people may be present. Inergen is zero
ozone depleting, zero global warming, and has a zero
atmospheric lifetime.
Inergen is composed entirely of naturally occurring
gases already found in the air we breath: nitrogen,
argon, and carbon dioxide. Inergen does not produce
a heavy fog upon discharge so escape routes remain
completely visible.
The fire suppression is performed by lowering the
oxygen content of the protected area to a point
sufficient to sustain human life but insufficient to
support combustion. Typical applications for Inergen
are computer centers, tape storage centers,
telephone exchanges, remote cellular sites, process
control rooms, medical diagnostic rooms and MRI
scanners, plus many others.
Getz Fire Equipment offers 24-hour service as well
as the NFPA 2001 required semi-annual inspections to
your Inergen Fire Suppression System.
Inergen is an environmentally green three
dimensional fire suppression agent replacing Halon
1301. Critical facilities such as data processing
rooms, telecommunications switching facilities,
process control rooms, and others, require a
non-water based extinguishing agent that:
Is electrically nonconductive
Is safe for use in human occupied facilities
Would not damage sensitive electronic equipment
Has zero ozone depletion, zero global warming, and
zero atmospheric lifetime
Inergen is a blend of three naturally occurring
gases--Nitrogen, Argon, and Carbon Dioxide. It is
stored in cylinders near the facility under
protection.
The strategy of fire extinguishment employed by an
Inergen system is like no other modern suppression
system in use today. An Inergen system lowers the
oxygen content of the protected area to a point
sufficient to sustain human life, but insufficient
to support combustion. It's that simple.
Because it's not a chemical agent, Inergen will not
produce a heavy fog the way other extinguishing
agents do, so escape routes remain visible.
The Inergen discharges through specially designed
nozzles. To minimize turbulence in the protected
area Inergen nozzles are fitted with discharge
deflectors.
At Gielle Srl our design specialists are factory
trained in the design of Inergen systems. Engineered
drawings will be prepared using the latest versions
of AutoCad. You will be supplied hydraulic flow
calculations and other engineering data detailing
the expected performance of your Inergen system.
No Inergen system is complete without after-sale
service. Our Engineered Systems Service Department
will stand ready to offer 24 hour emergency and
routine service to keep your Inergen fire protection
system ready and able at all times.
Inergen fire
suppression system: system specifications
ENVIRONMENTAL
IMPACT
INERGEN agent is a mixture of threenaturally
occurring gases: nitrogen, argon,and carbon dioxide.
As INERGEN agent isderived from gases present in the
earth’satmosphere, it exhibits no ozone
depletingpotential, does not contribute to
globalwarming, nor does it contribute uniquechemical
species with extended atmosphericlifetimes. Because
INERGEN agent iscomposed of atmospheric gases, it
does notpose the problems of toxicity associated
withthe chemically derived Halon alternativeagents.
PRODUCT DESCRIPTION
The INERGEN Fire Suppression System,manufactured by
Ansul, is an engineeredsystem utilizing a fixed
nozzle agent distributionnetwork. The system is
designed andinstalled in accordance with the
National FireProtection Association (NFPA)
Standard2001, ‘‘Clean Agent Fire
ExtinguishingSystems.’’ When properly designed,
theINERGEN system will extinguish surfaceburning
fire in Class A, B, and C hazards bylowering the
oxygen content below the levelthat supports
combustion.INERGEN agent has also been tested byFMRC
for inerting capabilities. Those testshave shown
that INERGEN agent, at designconcentrations between
40% and 50%, hassuccessfully inerted mixtures of
propane/air,and methane/air.The system can be
actuated by detectionand control equipment for
automatic systemoperation along with providing local
andremote manual operation as needed.Accessories are
used to provide alarms,ventilation control, door
closures, or otherauxiliary shutdown or
functions.When INERGEN agent is discharged into
aroom, it introduces the proper mixture ofgases that
will allow a person to breathe in areduced oxygen
atmosphere.A system installation and
maintenancemanual is available containing
information onsystem components and
proceduresconcerning design, operation,
inspection,maintenance, and recharge.The system is
installed and serviced byauthorized distributors
that are trained by themanufacturer.
Basic Use – The INERGEN system is
particularlyuseful for suppressing fires in
hazardswhere an electrically non-conductive mediumis
essential or desirable; where clean-up ofother
agents present a problem; or where thehazard is
normally occupied and requires anon-toxic agent.
Composition and Materials
The basicsystem consists of extinguishing agent
storedin high strength alloy steel cylinders.
Varioustypes of actuators, either manual or
automatic,are available for release of the agentinto
the hazard area. The agent is distributedand
discharged into the hazard area througha network of
piping and nozzles. Each nozzleis drilled with a
fixed orifice designed todeliver a uniform discharge
to the protectedarea. On large hazards, where three
or morecylinders are required, a screwed or
weldedpipe manifold assembly is employed.
Thecylinder(s) is connected to the
distributionpiping or the manifold by means of a
flexibledischarge bend and check valve assembly.
Additional equipment
includes
Controlpanels, releasing devices, remote manualpull
stations, corner pulleys, door closures,pressure
trips, bells and alarms, and pneumaticswitches. All
or some are requiredwhen designing a total
system.INERGEN Agent – INERGEN agent is amixture
of three inerting (oxygen diluting)gases: 52%
nitrogen, 40% argon, and 8%carbon dioxide. INERGEN
gas extinguishesfire by lowering the oxygen content
below thelevel that supports combustion. WhenINERGEN
agent is discharged into a room, itintroduces the
proper mixture of gases thatstill allow a person to
breathe in a reducedoxygen atmosphere. It actually
enhances thebody’s ability to assimilate oxygen.
Thenormal atmosphere in a room contains 21%oxygen
and less than 1% carbon dioxide. Ifthe oxygen
content is reduced below 15%,most ordinary
combustibles will cease toburn. INERGEN agent will
reduce the oxygencontent to approximately 12.5%
whileincreasing the carbon dioxide content toabout
4%. The increase in the carbon dioxidecontent
increases a person’s respiration rateand the
body’s ability to absorb oxygen.Simply stated, the
human body is stimulatedby the carbon dioxide to
breathe more deeplyand rapidly to compensate for the
loweroxygen content of the atmosphere.
Cylinders
The cylinders are constructed,tested, and marked in
accordance withapplicable Dept. of Transportation (DOT)and
the U.S. Bureau of Explosives specifications.As a
minimum, the cylinders mustmeet the requirements of
DOT 3AA2300or 3AA2015+.Cylinder Assembly – The
cylinder assemblyis of steel construction with a red
standardfinish. Four sizes are available to
meetspecific needs. Each is equipped with apressure
seat-type valve equipped withgauge. The valve is
constructed of forgedbrass and is attached to the
cylinderproviding a leak tight seal. The valve
alsoincludes a safety pressure relief devicewhich
provides relief at 2900-3300 psi(20685-23167 kPA)
per CGA test method.Cylinder charging pressure is
2175 psi at70 °F (14997 kPA at 21 °C). The
cylindersare shipped with a maintenance record
cardand shipping cap attached. The cap isattached to
the threaded collar on the neckof each cylinder to
protect the valve while intransit. The cylinder
serial number and dateof manufacture are stamped
near the neck ofeach cylinder.
Electric Actuator
Electric actuation of anagent cylinder is
accomplished by anelectric actuator interfaced
through anAUTOPULSE® Control System. This
actuatorcan be used in hazardous environmentswhere
the ambient temperature range isbetween 32 °F and
130 °F (0 °C and 54 °C).In auxiliary or override
applications, a manuallever actuator can be
installed on top of theactuator.Manual or Pneumatic
Actuators – Twotypes of manual/pneumatic actuators
areavailable for lever actuation on the
cylindervalve. Manual actuation is accomplished
bypulling the hand lever on the actuator. Thelever
design contains a forged mechanicaldetent which
secures the lever in the openposition when actuated.
Detection System
The AUTOPULSEControl System is used where an
automaticelectronic control system is required
toactuate the INERGEN system. This controlsystem is
used to control a single fixed firesuppression or
alarm system based oninputs received from fire
detection devices.The detection circuits can be
configuredusing cross, counting, independent or
priority-zone (counting) concepts. The controlsystem
has been tested to the applicableFCC Rules and
Regulations for Class AComputing devices.
Typical Inergen
Installations
A few typical installations often protected by
Inergen include:
Computer Room Fire Protection Systems
Data Center Fire Protection Systems
Telecommunications Fire Protection Systems
Telephone Switch Fire Protection Systems
Raised Floor Fire Protection Systems
Tape Storage Fire Protection Systems
Switch gear Fire Protection Systems
Vault Fire Protection Systems
Process Equipment Fire Protection Systems
Any normally occupied or unoccupied areas with
sensitive electronic equipment
Gielle Srl - Administrative Headsquares Via R. Ferri 32 Z.I. - 70022 Altamura (Ba) Italy
Tel +39 0803118998 - Fax + 39 0803101309
E-mail: info@gielle.it
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