Chemical Based Specialty Systems Flashcards
What is Carbon dioxide
-Inert
-non corrosive
-nontoxic
-electrically non-conductive
-leaves no residue
CO2 is how heavy with relation to air
1.5x heavier then air
How does CO2 extinguish fires
Reducing oxygen in the air
CO2 removes oxygen to what level
To 15%
(21% is normal level)
What must be posted outside where CO2 discharge presents risk
Warning signs
Safety actions that should be taken with CO2 systems are
-alarms that activate upon system activation
-adding odour to CO2
What is especially important with CO2 systems
Maintain a minimum clearance from live electrical part and system piping and nozzles
In areas with an explosive atmosphere with a CO2 system what must be done
Properly grounded metal nozzles
Where are CO2 systems used
Dip tanks
Drainboards
Rolling mills
Oil filled transformers
Where are CO2 systems not suitable for
Deep seated or smouldering fires
In high pressure CO2 systems, the CO2 is stored at what temp
Cylinders at room temp
As CO2 is discharged from the nozzles, it converts to a gas and expands at a ratio of
450:1
CO2 converts to dry ice at what temp
-110F
Hangers on CO2 systems are different how
More substantial and closely spaced compared to average sprinkler system
Pipe permitted in high pressure CO2 systems
ASTM A-53 - seamless or electric welded pipe
ASTM A-106
Pipe permitted in Low pressure CO2 systems
A-53 butt welded pipe
High pressure CO2 systems with 3/4” and smaller can be what pipe
Sch 40
High pressure CO2 systems with 1-4” pipe must be what pipe schedule
Sch 80
All pipe in low pressure CO2 systems must be at least what schedule
Sch 40
What fitting cannot be used with CO2 systems
Cast iron or Class 150 fittings
In high pressure CO2 systems, what fittings shall be used for pipe sizes up to 2”
-Class 300 malleable
-Ductile Iron fittings
What fittings shall be used on all pipe sizes larger then 2” on high pressure CO2 systems
Forged steel fittings
Flanged joints upstream of any stop valve shall be what for high pressure CO2 systems
Class 600
In high pressure CO2 systems, Downstream of any stop valves, or in systems with no stop valves, flanged joints may be
Class 300
In low pressure CO2 systems, what fittings may be used with pipe sizes up to 3”
Class 300 malleable
Ductile iron fittings
In low pressure CO2 systems, what fittings shall be used on all pipe larger then 3”
1000lb ductile iron or forged steel fittings
Flanged joints in low pressure CO2 systems shall be
Class 300
What bushings shall not be used with CO2 systems
Flush bushings
What bushings can be used in CO2 systems
Hex bushings,
3000lb forged steel bushing shall be provided with more then 1 pipe size reduction
Where brazed joints are used in CO2 systems the brazing alloy shall have a melting point of
1000F or higher
What fittings may be used on CO2 systems if listed for it
Mechanical grooved couplings and fittings
After assembly of CO2 systems, what must be done prior to nozzles being installed
System must be blown out
What does a dirt trap consist of with CO2 systems
Tee or capped nipple at least 2” long at the end of the each pipe run
Pressure in storage cylinders varies with
Tempature
At 70F, the pressure inside high pressure CO2 storage cylinders would be
850psi
With CO2 systems, the storage temperature for local application systems shall be
No more then 120F
No less then 32F
Total Flooding CO2 systems shall be stored at temperatures not to exceed ____ and go below ____
No more then 130F
No less then 0F
What is provided on each carbon dioxide system for safety
A disk that will rupture at a pressure below the cylinder test pressure
The cylinders in a high pressure system are manifolded into a common header with
Flexible discharge loops
What cylinders are activated by control head in CO2 systems
Pilot cylinders
In CO2 systems, cylinders that are activated by CO2 discharge into the header from the pilot cylinders are called
Slave Cylinders
CO2 systems, if the supply consists of three cylinders or more, there shall be what
One pilot cylinder more than the minimum required to act the system
2 main categories of high pressure CO2 systems are
Local Application
Total Flooding
Low pressure CO2 systems storage containers have a working pressure of at least
325psi
Low pressure CO2 systems storage containers are maintained at a temperature of
0F
The use of low storage pressure makes it economical to store CO2 in quantities above
500lbs
(No max size limitation, multiple hazards are usually protected by one storage unit)
Relief valves on low pressure storage units are set to bleed off if the pressure exceeds
341psi
Pop valves on low pressure storage units are set to operate at
357psi
(For a rapid release)
Master and master selector valves are located
At the storage unit and are under constant pressure
What do master and master selector valves do
Control the flow of carbon dioxide to one or more selector valves
Selector valves are located
Near the hazard are
Selector valves control
The actual discharge of CO2 into the hazard
The discharge control valve on a low pressure CO2 system is commonly know as
Piston Operated Globe Valve
(spring holds the valve disc in the normally closed position)
Discharge control valves are regulated by
Pilot valves located in cabinets
Pilot valves in cabinets are fed with what size pilot line
1/2”
Pilot Valves are actuated in 3 ways
-Automatically electrically (detection devices)
-manually electrically (push button stations)
-manually mechanically (lever on front of pilot valve cabinet)
Pilot valves controlling master valves, what happens in power failure (Normally Energized)
Pilot valves will open to allow CO2 to pass through the master valves to the selector valves
Pilot valves controlling selector valves and master selector valves will do what In a power failure
(Normally de-energized)
Will not allow CO2 to pass through the discharge control valves into the protected area
What is the NFPA for carbon dioxide systems?
NFPA 12
A total flooding carbon dioxide system shall consist of
A fixed supply of CO2 permanently connected to a fixed piping
Total flooding CO2 systems shall be used where
There is a permanent enclosure around the hazard
New total flooding carbon dioxide systems shall not be installed where
Normally occupied enclosures
When can new total flooding systems (CO2) be installed in normal occupied and enclosures
-Concentrations do not fall below LOAEL
-Enclosures involving electrical equipment >400V
-where other gaseous agents are not available for the specific hazard
-Marine cargo holds and engine rooms
Existing total flood CO2 systems shall be permitted in occupied and enclosures equipped with
-System lockout valves
-pneumatic pre-discharge alarms
-pneumatic time delays
What shall be conducted to ensure that carbon dioxide effectively covers the hazards for full periods of time?
Full discharge of the entire design quantity of carbon dioxide
Design concentration in CO2 systems shall be maintained a minimum of
20 minutes
Rate of Rise application (CO2) shall based on
The quantity of CO2 and the maximum time to achieve concentration
For surface fires with CO2 systems the concentration shall
Be achieved in
1 min
For deep seated fires with CO2 the concentration shall be achieved in
7min
CO2 systems, What application method shall be used for the extinguishment of surface fires where the hazard is not enclosed
Local
The quantity of CO2 required shall be enough to
Blanket the area and the discharge must be maintained to ensure complete extinguish
The minimum discharge time from any nozzle in CO2 systems shall be (local application)
30 seconds
Minimum discharge time shall be increased to _____ minutes, for any hazard that would require a longer cooling period/complete extinguishment
3 minutes
The total discharge rate in CO2 systems shall be equal to
1lb/min per cubic ft
CO2 devices shall be designed to normally function between what temperature
-20F to 150F
Consideration shall be given to what with CO2 systems
-CO2 can drift and settle outside protected space/migrate or collect in areas
What alarms shall be provided with CO2 systems
Audible and Visible (located outside each entrance)
What specific alarms shall be located within the hazard area
Pre-Discharge
Time delays with CO2 systems must be sufficient enough to
Allow personnel to evacuate from the most remote exits
Manual Controls with CO2 systems shall NOT require what
Pull force of more than 40Lbs
Nor a movement of more then 14”
At least ____ manual control for activation shall be provided for CO2 systems
1
How far is the manual release above finished floor
4ft
What switches shall not be used with CO2 systems
Abort Switches
All carbon dioxide systems shall be inspected at least
Monthly to access the systems operational condition
What is included in an annual inspection of a CO2 system
System operation
Hazard
Audible and Visible alarms
Signs and detection operation
Discharge test of CO2 systems are only required when
Maintenance indicates the necessity
Low pressure CO2 systems use CO2 stored in a pressure tank maintained at what psi
300psi through refrigeration
What pipe may be used on low pressure CO2 systems
- A53 furnace butt welded pipe
- at least Sch 40 pipe
What fittings may be used on a low pressure CO2 system up to 3”
Class 300 malleable
Ductile iron
What fittings may be used on low pressure CO2 systems larger then 3”
1000lb ductile iron
Forged steel fittings
Flanged joints in low pressure CO2 systems shall be
Class 300
Valves used in low pressure CO2 systems, shall withstand hydrostatic test pressure of
1800psi without distortion
Pressure vessels in low pressure CO2 systems are designed to a working pressure of at least
325psi
Vessels in low pressure CO2 systems are maintained at a temp of approximately
0F
In a low pressure CO2 system, with the vessel at 0F the pressure is approximately
300psi
Low pressure CO2 systems allows quantities above ____ to be stored
500lbs (no max size limit)
With vessel storage in low pressure CO2 systems, if the temp drops to approx. -10F, the tank pressure would read
Below 250psi, heating must then be provided
Containers on low pressure CO2 Systems are provided with 2 types of relief valves which are
Diaphragm
Pop Valves
At least ____ the liquid level should be observed in a low Pressure CO2 system
Weekly
Where is the master valve located with low pressure CO2 Systems
At the storage unit and under constant pressure
Where is the selector valve located in Low pressure CO2 systems
Located near the hazard area, downstream of master valve
What does the selector valve do in Low pressure CO2 systems
Controls the actual discharge of CO2 into the hazard
(remains closed unless actuated by its control device)
Master selector valve is located where low pressure co2 systems
At the storage unit and is under constant pressure
What does the master selector valve do in low pressure CO2 systems
Used to control flow of CO2 and actual discharge into the hazard
Pilot valves in Low pressure CO2 systems are actuated in 3 ways which are
Automatically - Electrically
Manually - Electrically
Manually - Mechanically
How does a automatic electric pilot valve work (low pressure CO2 systems)
-Actuated by fire detection
-will discharge for a pre determined length of time then return to normally closed
How does a manually electric pilot valve work (low pressure CO2 systems)
-actuated by push button stations
-will discharge for pre determined length of time then return to normally closed
How does a manually mechanically pilot valve work (low pressure CO2 systems)
-Actuated by a lever
-will discharge and remain open until manually returned to closed position
Carbon dioxide systems are extinguish fires by
Reducing level of oxygen from 21% to 15%
(A point at which combustion cannot exist)
Some hazards CO2 can protect are
Flammable liquids
Electrical Hazards
Ordinary Combustibles
Hazardous Solids
How are High pressure CO2 cylinders stored
Cylinders at room temp
In a high pressure CO2 systems, the CO2 is distributed to the nozzle as a
Liquid
High pressure CO2 systems, each tank has a
Dip tube
As CO2 is discharged in a high pressure system, its converts to a gas at a ratio of
450:1
Hangers in high pressure CO2 systems are
More substantial and closely spaced
Valves under constant pressure in high pressure CO2 systems shall have a minimum burst pressure of
6000psi
Valves not under pressure in high pressure CO2 systems shall have a minimum burst pressure of
5000psi
3/4” and smaller pipe in high pressure CO2 systems may be
Sch 40
1-4” pipe in high pressure CO2 systems shall be
Sch 80
2” and smaller Fittings in high pressure CO2 systems shall be
Class 300 malleable
Ductile iron
Any Fittings larger then 2” shall be what in high pressure CO2 systems
Forged steel fittings
Any flanges upstream of a stop valve in a high pressure CO2 system shall be
Class 600
Any flanges downstream of a stop valve in a high pressure CO2 system shall be
Class 300
What bushings cannot be used with high pressure CO2 systems
Flush bushings
Where hex bushings are used for one pipe size reduction on high pressure CO2 systems, it shall be
Class 300
Copper and brass tubing shall use what fittings with high pressure CO2
Flared
Compression
Brazed
Brazing alloy shall have a melting point of _____ with high pressure CO2 systems
1000F or higher
When can grooved couplings and fittings be used with high pressure CO2 systems
Only if they are specifically listed for use
What does the master valve do in low pressure CO2 systems
Controls the flow of CO2 to one or more selector valves
What shall the nozzles be marked to show on CO2 systems
The equivalent single orifice diameter
1= 1/32 .5= 1/64
2 = 2/32 3.5= 7/64
3 = 3/32
4= 4/32
In a CO2 system pipe shall be
Reamed and clean before assembly
CO2 systems, a dirt trap consisting of _______ and should be installed ________
Consisting of a Tee and capped nipple at least 2” long
Should be installed at the end of each pipe run
CO2 is stored under its own
Vapour pressure for discharge
With CO2 systems Local application methods shall be within what temp
32F to 130F
With CO2 systems Total Flooding application methods shall not exceed what temp
0F to 130F
What may be used to keep system temperature within specified ranges
External heating or cooling
What is provided for safety and will rupture at a pressure below cylinder test pressure
Rupture disc
Cylinders in a high pressure CO2 system are manifolded into
A common header with flexible discharge loops
Control heads operate what cylinders
Pilot cylinders
The cylinders that are activated after the pilot cylinders are called
Slave cylinders
At least ______ cylinders shall be weighed and the date of the last hydrostatic test noted (CO2)
Semi Annually
Carbon dioxide will suppress a fire without leaving any
Residue
Carbon dioxide will suppress what class of fire
Class A, B and C
CO2 is present in the atmosphere at an average of about
0.03%
Carbon dioxide is discharged through the pipe network as a
Liquid
CO2 has a density of about ____ compared to air
50% greater
CO2 can exist as
Liquid, solid, gas
Below ____ CO2 cannot exist as a liquid
60psi
Triple point of CO2 is
60psi
This is the point at which it can exist as a liquid, solid, or gas
What is a hand hose line system with CO2
Hose and nozzle assembly are connected by fixed piping, connected to supply
High pressure CO2 systems are typically used in
Smaller hazard areas
-printing presses
-vaults
-spray booths
-ovens
-process equipment
-hoods and ducts
The main cylinder with control actuator on CO2 systems is called the
Pilot cylinder
Low pressure CO2 systems are generally used in
Larger or multiple hazard areas
-open pits
-coating machines
-exhaust and fume handling systems
-generators
-rolling mills
-inerting applications
NFPA for clean agent systems
NFPA 2001
Types of agents with clean agent system
Halocarbon and Inhert gas
What is a halo carbon agent
Agent that contains Fluorine, Chlorine, Bromine, or Iodine as one of its primary components
What is Inhert Gas agent
Helium, Neon, Argon, or Nitrogen as primary component
Types of fires clean agent systems can be used on
Class A, B and C
Clean agent may be discharge using 2 methods which are
Total Flooding
Local application
CO2 systems may be discharged using 3 systems
Total Flooding
Local application
Hand hose systems
Pipe used in clean agent systems is based on
Pressure and temperature
(Shall be able to support pressures)
When shall pipe be cleaned internally with clean agent system
After preparation and before assembly
(must be clean before discharge devices are put on)
How is a clean agent system cleaned internally
Swabbed with non flammable cleaner
After the cleaning internally of a clean agent system the pipe shall be free of
Particle matter and oil residue
Acceptable pipe joints in clean agent systems
Threaded
Welded
Brazed
Flared
Flanged
Fittings in clean agent system shall NOT be
-Cast Iron
-Class 150
Brazing alloys shall have a melting point above _____ in clean agent systems
1000F
In a clean agent system, tape or thread lubricant shall be applied to
Male threads only
Discharge nozzles in clean agent system shall be marked to identify
-manufacture
-type and size of orifice
What detection devices shall be used with clean agent systems
Automatic
Device operating temperature range with clean agent system
-20F to 130F
What is required on clean agent systems that can be activated manually
Discharge pressure switch
Manual controls on a clean agent system require
- A pull force of 40lbs
- 14” of moment for operation
- Located not more then 4’ AFF
What switch can be used to prevent unwanted discharge in clean agent system
Supervised disconnect switch
What percent of the design concentration must be maintained with clean agent systems
85%
What is the duration that 85% of the highest level of concentration must be maintained in clean agent systems
10 minutes
Max time to extinguish a fire with a halocarbon agent is
10 seconds
Max time to extinguish a fire with Inhert gas is
120 seconds
Clean Agent quantity and pressure shall be checked
Semi Annually
Cylinders in clean agent systems more then ____ years old, require to be refilled, shall be tested first
5 years old
The hazard being protected with clean agent systems require inspection
Annually
Clean agent System pressure test shall be tested using
Nitrogen or another dry gas
Test pressure and duration for clean agent system and allowable loss
40psi for 10 minutes
Cannot lose more than 20%
Flow test shall be done with clean agent systems to ensure
There are no obstructions in pipe from cylinders to nozzles
What must be done to enclosure of total flooding clean agent systems
Inspected and Tested to ensure that air cannot leak out
3 kinds of clean agent systems are
Sapphire
Inergen
FM 200
Clean agent in a sapphire system is stored in what form
A liquid
What fluid does a sapphire system use
3M Novac 1230 fire fighting fluid
(Halo carbon agent)
Cylinders in a sapphire system have what in them
Nitrogen
What pressure are nitrogen filled cylinders in sapphire system
360psi
Sapphire extinguishes fire by
Heat Absorption
Ingergen systems the clean agent is stored in what form
Gas
What does the gas consist of in ingergen systems
52% Nitrogen
40% Argon
8% CO2
(Inhert Gas agent)
Ingergen systems provide there own _____ for expulsion
Vapour pressure
Ingergen system extinguishes fire by removing oxygen below
15%
FM200 systems the agent is stored in what form
Liquid
What does the clean agent consist of in an FM 200 system
Carbon
Fluorine
Hydrogen
How does an FM 200 system extinguish a fire
Removes heat
In an FM 200 system the cylinders are charged with what and at what pressure
Nitrogen and at 360psi
What has been a long time substitute of Halon 1301
Sapphire systems
What does ODP, GWP, and ATL mean
ODP= ozone depletion potential
GWP= global warming potential
ATL= atmospheric lifetime
Sapphire systems ODP, GWP, and ATL
ODP= 0
GWP= 1
ATL= 5 days
Ingergen systems ODP, GWP, and ATL
ODP= 0
GWP= 0
ATL= 0
The components are found in our atmosphere
FM 200 systems ODP, GWP, and ATL
ODP= 0
GWP= 3500
ATL= 34 years
Halon 1301 ODP, GWP, and ATL
ODP = 12
GWP = 6900
ATL = 65 years
What is the Montreal protocol
International agreement signed by Canada + 24 other countries to restrict the production of chemicals depleting the ozone layer
Halon was first used during
WW2
Characteristics of clean Agents
-Volatile or gaseous fire extinguisher
-electrically non conductive
-leaves no residue
For an agent to classify as “clean” it must have
No know effect in the ozone layer or humans
Halocarbons are stored as a ____ and delivered as a ____
Stored as a liquid
Delivered as a gas
Halocarbons require what to discharge
Expelling agents
Usually nitrogen or CO2
Halocarbon extinguishes a fire by
Heat Absorption
Inhert gas extinguishes a fire by
Lowering oxygen to 15%
Inhert gasses have enough ____ to expel themselves
Sufficient vapour
Inhert gas are stored as a ______ and delivered as a ______
Gas
What Clean agent is more environmentally friendly
Inhert Gas
Most clean agent systems are used as what kind of system and why
-Total Flooding
(Because local can only be used on surface fires that are not enclosed)
Dry chem is a powder composed of
Very small particles with added particulate material
Dry chem is supplemented with special treatments to provide resistance to
Packing
Moisture absorption (caking)
How does dry chem extinguish a fire
Removes oxygen and blocks from fuel vapours from releasing
Dry chem is best used on
Serious hazard with a danger of quick spreading
2 basic system types of dry chem are
Local & Total Flooding
In a total flooding dry chem system, the design concentration shall be obtained within
30 seconds
2 types of local application for dry chem are
Area method
Volume method
Area method with dry chem is applicable to
Superficial fires
(Amount of agent depends on hazard)
Volume method with dry chem is applicable to
Cubical fire
(Amount of agent depends upon the volume of object in danger)
Hazard area in dry chem shall include
All areas that are or may become coated by combustible or flammable liquids
Detection devices for dry chem
Heat responsive elements or Linear heat sensing cable
Once the electric actuator is operated on a dry chem, what is released
Nitrogen
(to activate the pneumatic actuators on the dry chem storage tanks)
What does the rupture disc do on a dry chem storage tank
Permit the build up of proper operating pressure
If dry chem is allowed to enter without sufficient pressure what could happen
Buildup on 90s and Tees
Restriction of flow/blocking
Pipe requirements for dry chem up to 6” pipe
-Galvanized Sch 40
-Black steel can be used in non corrosive environments
Brass and copper may be used in dry chem systems as long as
It’s thickness compares to Sch 40 pipe
Flexible piping may be used in dry chem systems as long as
It’s listed for such
Fittings in dry chem systems shall be
Galvanized malleable iron
Stainless steel copper or brass
What fittings can NOT be used in dry chem systems
Standard cast iron
After assembly of dry chem system, pipe must be
Blown out with dry gas before nozzles are installed
Dry chem is applied to a fire by means of
Extinguishers
Hand hose line systems
Fixed piping system
What was the first “standard” fire extinguishing dry chem
Sodium Bicarbonate (baking soda)
When did multiprupose dry chem begin to be manufactured
1960
5 basic varieties of dry chem and what fires they can be used on
- Sodium Bicarbonate (B&C)
- Potassium Bicarbonate (B&C)
- Potassium Chloride (B&C)
- Urea-Potassium Bicarbonate (B&C)
- Mono-ammonium Phosphate
(A,B & C)
The term “regular dry chem” or “standard dry chem” refer to
Dry chems that can be used on Class B & C fires
“Multipurpose dry chem” refers to dry chem that can be used on
Class A, B & C fires
What is the most effective dry chem
Urea-Potassium Bicarbonate
Potassium Bicarbonate is more effective then
Sodium Bicarbonate
Mono ammonium phosphate base was found equal or better then
Sodium bicarbonate
What is the primary principle of extinguishment with dry chem
Breaks chemical chain reaction
Dry chem is available In bags or plastic lined containers usually weighing
10lbs or more
Dry chem should not be stored in temperatures of
Over 140F
(Additives may melt causing caking)
If dry chem loses its free flowing condition it should be
Thrown out
Dry chem is primarily used to extinguish fires of
Class B & C
Flammable liquids (dip tanks)
-Effective on transformers and oil circuit breakers, surface fires with ordinary combustibles
Dry chem will NOT permanently extinguish a fire if what is still present
Ignition source
Dry chem should not be used where
Delicate electrical contacts are located
Dry chem will not extinguish fires in materials that supply there own
Oxygen
Gas for dry chem stored separately in small containers are sometimes referred to as
Cartridges
This is a “Stored Gas system”
Gas stored in the same container as dry chem is called
“Stored pressure system”
Engineered types of dry chem systems are designed to
-Particular purpose or hazard
-Require individual Calc. And design
Pre-Engineered types of dry chem systems are designed to
-Components are determined by fire tests for sizes & types of hazard. “Package systems”
(Kitchen hoods)
Engineered dry chem is designed by
Specialist
Pre Engineered dry chem is designed by
Manufacture
Hybrid systems are a combination of
Inhert gas and water mist systems
Hybrid systems provide characteristics that are ideal for
Dispersion
Extinguishment
Cooling of fires
Water supply in hybrid system must be
Potable or same quality
Hybrid media system 2 key components
Discharge of the water mist and Inhert gas from a common device
Hybrid media system reduces oxygen level below
16%
Hybrid system used on what class fires
Class A, B, and C
Vortex system was the first
Hybrid system
Vortex system use ____ as the Inhert gas
Nitrogen
Discharge nozzles are called what in vortex systems
Emitters
Piping in vortex system from tank to regulator in panel enclosure must be
-Sch 80 or 160
-Black, seamless, welded or threaded
Beyond the regulator in a vortex system the pipe can be
Sch 10
All fittings in a vortex system before the regulator shall be
Forged steel 3000 pound
Beyond regulator in a vortex system the fittings can be
Standard fittings
tank in a vortex system size
11.5”x69”
475 cubic ft
Weight of tank in vortex system
325lbs
In a vortex system, water enters the path of nitrogen at
Super sonic speed
Vortex emitter is connected with what size pipe
1”
Nitrogen within cylinders of vortex system is released by
Electric actuation from detector circuit
Low pressure switch in vortex system will send a trouble signal when the pressure is below
2300psi
Device that opens the needle valve on vortex system
PLC motor drive
Halon 1301 was banned in
1987 by Montreal protocol
FM200 became one of the replacements for
Halon 1301
FM200 was patented by
Great Lakes chemical Corp in 1993
FM-200 extinguishes fires by
-Cooling the flame
-Interrupting the chemical process
FM200 is used in applications that include
-Telecommunications/computer operations
-Library’s/museums
Benefits of FM200
-safe for humans
-leaves no harmful or messy residue
FM200 extinguishes a fire in ____
Seconds
FM200 is a compound that consist of
Carbon
Fluorine
Hydrogen
If FM200 is exposed to temperatures greater then _____ toxic products of decomposition are formed
1300F
(Hydrogen fluoride)
FM200 is stored as a ____
Liquid
FM200 is stored as a liquid in shell containers at a pressure of
360PSIG
(With nitrogen)
Accepted minimum concentration levels of FM200 for factory mutual and UL
Factory Mutual - 7%
UL - 6.25%
UL and FM require multiple tiers of nozzles for heights above
UL- 10ft
FM - 12ft
All special application systems require
A manual actuator
Nozzles in FM200 system are designed to properly discharge/distribute the gas in how long
10 seconds
Typical radial nozzle in FM200 range in sizes of
3/8” to 2”
What is a reason nozzles cannot be changed
Outlet holes are drilled to specific size
Tees in FM200 systems are to be installed
Horizontal plane
(Minimizes liquid Vapor separation)
Nozzles are drilled in what size increments
Thousands of an inch
Testing procedure for FM200 system
Pneumatically for 10 min @ 150psi
Pressure drop shall not exceed 20% of test pressure
No pressure loss can be present on the _____ for FM200 systems
Pilot manifold piping
(Bubble tight)
Concentration time starts when
When bottle starts discharging
CO2 bottles must be replaced or refilled when
10% weight loss
Type of application CO2 systems work best
Class C Fires
What’s the purpose of the dip tube in a high pressure CO2 system
Draws liquid CO2 from cylinder
Victaulic colour coding for sprinkler piping
Purple/Violet
Victualic colour coding for CO2
Silver
Purpose of flexible discharge loops on high pressure CO2 system
Easily check weight
What does LOAEL mean
Lowest Observed Effect Level
