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CO2 fire suppression systems are recommended for protection
of unoccupied spaces. These systems consist of high-pressure
cylinders or low-pressure tanks containing carbon dioxide (C02)
agent under pressure, connected to fixed piping and nozzles
or hoses.
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systems are used for total flooding of a volume with carbon dioxide,
such as a flammable liquid storage room, or for local application,
such as on a dip tank. Since carbon dioxide is electrically nonconductive,
it is frequently used for protection of electrical equipment. Being
a gaseous fire extinguishing system makes CO2 suitable for fires in
electrical equipment, electronic equipment, and flammable liquids.
Multi-hazard, high-risk protection can be designed to provide automatic,
simultaneous discharge for a variety of hazards and configurations
using high- or low-pressure systems. Low-pressure systems and equipment
are best suited for applications where large quantities of CO2 are
needed. For smaller hazards or where space is limited, a high-pressure
system is recommended. CO2 systems are UL listed and FM approved.
Dry Chemical Systems protect a wide variety of industrial applications such
as paint spray booths, mechanical rooms, and flammable liquid storage areas,
using Class ABC or Class BC dry chemical. These systems operate inside of
a large temperature range of -40° to 120° F, making these systems
suitable for 
harsh, industrial-type environments. These systems are designed using one
of two basic configurations: local application or total flooding. In a local
application system, the nozzles are positioned either overhead or along
the side to deliver the dry chemical agent directly onto the fire hazard.
A total flooding system, recommended for enclosed rooms and processes, will
rapidly "flood" the protected area with dry chemical agent to
create an atmosphere that will not support combustion but is not hazardous
to personnel. These systems are UL listed and FM approved.
Foam systems come in two types, as follows:
- Low Expansion, where the bubble expansion ratio is small (less
than 20 to 1) and the bubble contains a high water content.
- Medium and High Expansion, where the expansion ratios are greater
from 20 to 1 up to 1,000 to 1. At these expansion ratios, the
bubble water content is low and the bubble is relatively light.
The foam bubbles are made by mixing a foam concentrate with water
to make a foam solution. The foam solution is then mechanically
agitated to form bubbles.
Low Expansion Foam Fire Extinguishing Systems are applicable to special
hazards, usually involving flammable or combustible liquids, such
as storage tanks. These systems discharge foam bubbles over the liquid
surface to provide a cooling, smothering blanket which progressively
covers the liquid surface and extinguishes the fire. The foam blanket
can prevent vapor production for some time.
Aqueous film-forming foam (AFFF) functions in a similar manner,
but with one notable difference: AFFF is capable of producing water
solution films which float on the surface of the liquid and help
suppress vapor production. However, this beneficial "film"
is obtained with some loss of burn-back resistance.
High Expansion foam systems are applicable to areas where it might
be desirable to fill the space with foam in order to exclude air
and smother the fire. Examples of such areas include basements and
warehouses.
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Foam-systems applications include but are not limited to
airports, refineries, manufacturing plants, and other operations
involving the transportation, processing, or handling of flammable
liquids. Foam systems are UL listed and FM approved.
Product Data:
Foam
Agent
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Water-Mist systems force water and pressurized gas together to deliver
a spray of very small droplets. The system suppresses fire in three
ways:
- As the water droplets contact the fire they convert to steam.
This process absorbs energy from the surface of the burning material.
- As the water turns into steam it expands greatly. This removes
heat and lowers the temperature of the fire.
- The water and the steam act to prevent oxygen from reaching
the fire so the fire smothers.
Since Water-Mist systems utilize water as the extinguishing medium,
they are totally safe for humans. These systems can be useful for
suppressing fires in gas turbine enclosures, and machinery spaces
and are FM approved for such applications.
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Water-Mist systems include:
- Detection
- Control Unit
- Suppression Agent
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