CO2 Fire Protection System for industries.ppt
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Aug 14, 2024
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About This Presentation
CO2 fire protection system is used in industries for preventing people plant and equipment from fire.
Slide Content
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Each year fire is responsible for Crores of Rupees of loss and damage
within the State and billions worldwide, not to mention the often sad loss of
life which can have devastating effects on families and businesses.
Naturally, therefore, many properties are required by legislation to install
and maintain appropriate fire alarm & protection system. Community
directives suggest that, in the near future, such legislation will be increased
with even those properties not currently required to have a full fire alarm
system, required to provide basic detection systems.
LIFE IS PRECIOUS. PROTECT IT
within the State and billions worldwide, not to mention the often sad loss of
life which can have devastating effects on families and businesses.
Naturally, therefore, many properties are required by legislation to install
and maintain appropriate fire alarm & protection system. Community
directives suggest that, in the near future, such legislation will be increased
with even those properties not currently required to have a full fire alarm
system, required to provide basic detection systems.
LIFE IS PRECIOUS. PROTECT IT
Fire: The rapid oxidation of material during which heat and
light are emitted.
Combustion: an exothermic, self-sustaining reaction involving a
solid fuel, a gaseous fuel or both. Most often the reaction is
oxidation of a fuel by oxygen in air.
Reducing Agent: Rubber, Wood, Plastic, Methane.
Oxidizing Agent: Oxygen, Fluorine, Chlorine, HNO
3
, HF, H
2
SO
4
PHYSICS AND CHEMISTRY OF FIRE
light are emitted.
Combustion: an exothermic, self-sustaining reaction involving a
solid fuel, a gaseous fuel or both. Most often the reaction is
oxidation of a fuel by oxygen in air.
Reducing Agent: Rubber, Wood, Plastic, Methane.
Oxidizing Agent: Oxygen, Fluorine, Chlorine, HNO
3
, HF, H
2
SO
4
PHYSICS AND CHEMISTRY OF FIRE
Ignition Temperature: The minimum temperature that each material
must be reached for ignition to occur.
When some external source such as flame, spark causes ignition,
the process is called piloted ignition.
When there is no external source, the process is called auto-
ignition, spontaneous ignition.
The piloted ignition temperature is lower than the auto-ignition
temperature.
Ignition Temperature: The minimum temperature that each material
must be reached for ignition to occur.
PHYSICS AND CHEMISTRY OF FIRE
must be reached for ignition to occur.
When some external source such as flame, spark causes ignition,
the process is called piloted ignition.
When there is no external source, the process is called auto-
ignition, spontaneous ignition.
The piloted ignition temperature is lower than the auto-ignition
temperature.
Ignition Temperature: The minimum temperature that each material
must be reached for ignition to occur.
PHYSICS AND CHEMISTRY OF FIRE
When some external source such as flame, spark causes ignition, the
process is called piloted ignition.
When there is no external source, the process is called auto-ignition,
spontaneous ignition.
The piloted ignition temperature is lower than the auto-ignition
temperature.
Auto-ignition is often caused by heat buildup resulting from the
oxidation of organic material.
Bacteria and decomposition can contribute to the process in some
material. The material us reach the auto-ignition temperature and
have enough oxygen for combustion.
PHYSICS AND CHEMISTRY OF FIRE
process is called piloted ignition.
When there is no external source, the process is called auto-ignition,
spontaneous ignition.
The piloted ignition temperature is lower than the auto-ignition
temperature.
Auto-ignition is often caused by heat buildup resulting from the
oxidation of organic material.
Bacteria and decomposition can contribute to the process in some
material. The material us reach the auto-ignition temperature and
have enough oxygen for combustion.
PHYSICS AND CHEMISTRY OF FIRE
Method for controlling combustion and extinguishing fires:
Cool the fire
Limit the oxygen supply
Remove the fuel
Inhibit the chain reaction.
PHYSICS AND CHEMISTRY OF FIRE
Cool the fire
Limit the oxygen supply
Remove the fuel
Inhibit the chain reaction.
PHYSICS AND CHEMISTRY OF FIRE
Ignition Sources:
Electric 23 %
Smoking 18 %
Friction 10 %
Overheated materials 8 %
Hot surfaces 7 %
Burner flames 7 %
Combustible sparks 5 %
Auto-ignition 4 %
Cutting and Welding 4 %
Others (exposure, incendiarism 14 %
Mechanical sparks, chemical reaction molten substance, static sparks, etc.)
PHYSICS AND CHEMISTRY OF FIRE
Electric 23 %
Smoking 18 %
Friction 10 %
Overheated materials 8 %
Hot surfaces 7 %
Burner flames 7 %
Combustible sparks 5 %
Auto-ignition 4 %
Cutting and Welding 4 %
Others (exposure, incendiarism 14 %
Mechanical sparks, chemical reaction molten substance, static sparks, etc.)
PHYSICS AND CHEMISTRY OF FIRE
Carbon monoxide
Carbon monoxide forms when there is not enough oxygen for
complete combustion of the fuel.
It is a major cause of death in fires because:
It is a very common product of combustion
Relatively low concentrations can be lethal. A concentration of
1.0% or higher can cause death in 1 min or less.
It attaches easily to the hemoglobin of the blood’s red cells. It does
not easily release.
PRODUCTS OF COMBUSTION AND THEIR
HAZARDS
Carbon monoxide forms when there is not enough oxygen for
complete combustion of the fuel.
It is a major cause of death in fires because:
It is a very common product of combustion
Relatively low concentrations can be lethal. A concentration of
1.0% or higher can cause death in 1 min or less.
It attaches easily to the hemoglobin of the blood’s red cells. It does
not easily release.
PRODUCTS OF COMBUSTION AND THEIR
HAZARDS
Hydrogen Cyanide (HCN)
HCN is an extremely toxic gas in comparison to the CO. The amount
of 100 ppm in the air can cause the death within 30-60 min.
It occurs in the combustion of plastic, rubbish, wool, silk:
Hydrogen Sulfide (H2S)
Hydrogen sulfide is a colorless gas with an offensive stench and is
said to smell like rotten eggs. It is the flammable gas.
It can be formed when there is not enough oxygen for complete
combustion of the sulfide compound materials (i.e., rubbish, carpet,
wood, wool).
The concentration of 400-700 ppm. can cause the death within 30-60
min.
PRODUCTS OF COMBUSTION AND THEIR
HAZARDS
HCN is an extremely toxic gas in comparison to the CO. The amount
of 100 ppm in the air can cause the death within 30-60 min.
It occurs in the combustion of plastic, rubbish, wool, silk:
Hydrogen Sulfide (H2S)
Hydrogen sulfide is a colorless gas with an offensive stench and is
said to smell like rotten eggs. It is the flammable gas.
It can be formed when there is not enough oxygen for complete
combustion of the sulfide compound materials (i.e., rubbish, carpet,
wood, wool).
The concentration of 400-700 ppm. can cause the death within 30-60
min.
PRODUCTS OF COMBUSTION AND THEIR
HAZARDS
Sulfur Dioxide (SO
2)
Sulfur dioxide is a colorless gas with a suffocating, choking odor. It
is toxic to humans and concentrations as low as 8 ppm will produce
coughing.
It can occur from the complete combustion of the sulfide compound
materials.
The concentration as low as 150 ppm. Can cause the death :
Lack of Oxygen
A fire can consume much of oxygen available. As the normal 21 %
oxygen content declines, the capability of the hemoglobin of the red
cells to transport oxygen to body tissues decreases.
Reduced oxygen supply can impair tissue function, and when
muscles are affected, motor performance go sown; when muscles
are affected, motor performance can further impaired and mental
processes reduced. If oxygen supply is reduced enough,
unconsciousness results.
PRODUCTS OF COMBUSTION AND THEIR
HAZARDS
2)
Sulfur dioxide is a colorless gas with a suffocating, choking odor. It
is toxic to humans and concentrations as low as 8 ppm will produce
coughing.
It can occur from the complete combustion of the sulfide compound
materials.
The concentration as low as 150 ppm. Can cause the death :
Lack of Oxygen
A fire can consume much of oxygen available. As the normal 21 %
oxygen content declines, the capability of the hemoglobin of the red
cells to transport oxygen to body tissues decreases.
Reduced oxygen supply can impair tissue function, and when
muscles are affected, motor performance go sown; when muscles
are affected, motor performance can further impaired and mental
processes reduced. If oxygen supply is reduced enough,
unconsciousness results.
PRODUCTS OF COMBUSTION AND THEIR
HAZARDS
Carbon Dioxide Gas Extinguishing
Carbon Dioxide as an extinguishing agent is swift and thorough. Within
seconds, it smothers a fire and holds damage to a minimum. Stored
under pressure as a liquid, carbon dioxide quickly expands to vapour
and a state of fine particles of dry ice, much like snow. This "snow"
absorbs heat rapidly changes to a vapour under normal temperature
conditions, and even faster in the presence of fire. The carbon
dioxide vapour chokes of combustion, and the snow effect reduces
the ambient temperature to help prevent re-ignition. Moreover,
carbon dioxide is a three dimensional agent, enabling it to penetrate
the entire hazard area, including electrical cabinets.
GAS BASE SYSTEM
Carbon Dioxide as an extinguishing agent is swift and thorough. Within
seconds, it smothers a fire and holds damage to a minimum. Stored
under pressure as a liquid, carbon dioxide quickly expands to vapour
and a state of fine particles of dry ice, much like snow. This "snow"
absorbs heat rapidly changes to a vapour under normal temperature
conditions, and even faster in the presence of fire. The carbon
dioxide vapour chokes of combustion, and the snow effect reduces
the ambient temperature to help prevent re-ignition. Moreover,
carbon dioxide is a three dimensional agent, enabling it to penetrate
the entire hazard area, including electrical cabinets.
GAS BASE SYSTEM
Carbon Dioxide Gas Extinguishing
Low-pressure and high-pressure carbon dioxide systems have equal
extinguishing capabilities when each is designed to handle a specific
hazard. Carbon dioxide is normally harmless to equipment, materials
and property. It leaves no residue to be cleaned up, mopped up or
scraped off. Production downtime is held to a minimum.
Carbon dioxide is a colourless, odourless, electrically non-conductive
agent for the protection of vital services. In many instances, water is
not a suitable extinguishing medium, for example, where electrical
equipment is concerned or clean up time is vital, gaseous
extinguishing agent is the only option.
CO
2 Systems are installed in unoccupied applications, as the agent is
hazardous to humans due to the concentrations required to
extinguish fires.
GAS BASE SYSTEM
Low-pressure and high-pressure carbon dioxide systems have equal
extinguishing capabilities when each is designed to handle a specific
hazard. Carbon dioxide is normally harmless to equipment, materials
and property. It leaves no residue to be cleaned up, mopped up or
scraped off. Production downtime is held to a minimum.
Carbon dioxide is a colourless, odourless, electrically non-conductive
agent for the protection of vital services. In many instances, water is
not a suitable extinguishing medium, for example, where electrical
equipment is concerned or clean up time is vital, gaseous
extinguishing agent is the only option.
CO
2 Systems are installed in unoccupied applications, as the agent is
hazardous to humans due to the concentrations required to
extinguish fires.
GAS BASE SYSTEM
Smoke & heat detector
Alarm
Fire is automatically detected
Alarm
Fire is automatically detected
•System : CO
2 Fire Protection System
•Designer/Supplier : Total Walther, Germany (now M/s
Tyco).
•Code : CO
2 Fire Extinguishing System (NFPA-12)
•Purpose : Cables Protection against fire in Cable
Rooms/Galleries.
•No. of Systems : Five (05)
•Type of System : 02 Low & 03 High Pressure
•Zone Covered: 14 different zones.
•No. of Panels : 06 Fire Interconnected Alarm Panels
•Communication : Alarm and Fault Signals sent through
COM-BUS.
SYSTEM DETAILS
2 Fire Protection System
•Designer/Supplier : Total Walther, Germany (now M/s
Tyco).
•Code : CO
2 Fire Extinguishing System (NFPA-12)
•Purpose : Cables Protection against fire in Cable
Rooms/Galleries.
•No. of Systems : Five (05)
•Type of System : 02 Low & 03 High Pressure
•Zone Covered: 14 different zones.
•No. of Panels : 06 Fire Interconnected Alarm Panels
•Communication : Alarm and Fault Signals sent through
COM-BUS.
SYSTEM DETAILS
–Existing CO
2
fire protection is total solution for Electrical Fire:
•Fire detection
•Communication &
•Extinguishing system
“for unmanned and closed areas”.
–System is divided in 02 parts:
•02 LP systems for CCR, UCR and Plant Electrical Substations.
•03 HP systems for PH&S, DDEG and Workshop Sub-station.
–Individual panels are at each site while main panel is in Safety
building.
–System is based on actuation of any 2 smoke detectors.
–In-case of fire or malfunction, information with alarm appears on
local panel as well as on main panel.
2
fire protection is total solution for Electrical Fire:
•Fire detection
•Communication &
•Extinguishing system
“for unmanned and closed areas”.
–System is divided in 02 parts:
•02 LP systems for CCR, UCR and Plant Electrical Substations.
•03 HP systems for PH&S, DDEG and Workshop Sub-station.
–Individual panels are at each site while main panel is in Safety
building.
–System is based on actuation of any 2 smoke detectors.
–In-case of fire or malfunction, information with alarm appears on
local panel as well as on main panel.
Pressure: 20 Bar
Temperature : - 16~ 20°C
Storage: 8500 Kg Liquid CO
2
Capacity: 02 charge
LOW PRESSURE SYSTEM
Tank
R
e
frig
e
ra
tio
n
U
n
it
Panel
Weighing Device
Extinguishing
Line
Control Line
PSVs
SOVs
S
h
u
t - O
f f V
a
l v
e
Suction Valve
Three W
ay V
alve
Temperature : - 16~ 20°C
Storage: 8500 Kg Liquid CO
2
Capacity: 02 charge
LOW PRESSURE SYSTEM
Tank
R
e
frig
e
ra
tio
n
U
n
it
Panel
Weighing Device
Extinguishing
Line
Control Line
PSVs
SOVs
S
h
u
t - O
f f V
a
l v
e
Suction Valve
Three W
ay V
alve
LOW PRESSURE SYSTEM
SYSTEM 1: CCR
(Multi Zone)
Rack Room False Floor
Urea S/S
NH
3
S/S
Cooling Tower
S/S
CCR
Cable Tunnel
Cable Gallery
Cable Dist. Room
Rack Room False Floor
Cable Dist. Room
Cable Dist. Room
Rack Room False Floor
CO
2 Storage
Tank Cable Dist. Room
SYSTEM 2: UCR
(Multi Zone)
Pressure: 20 Bar (ABS)
Temperature : - 16~ 20°C
Storage: 8500 Kg Liquid CO
2
Capacity: 02 charge
DAP
CO
2 Storage
Tank
Cable
Tunnel
UCR
Main
Sub-Station
ZONE - 1
ZONE - 3
ZONE - 2
ZONE - 4
ZONE - 5
ZONE - 6
ZONE - 7
ZONE - 8
ZONE - 9
SYSTEM 1: CCR
(Multi Zone)
Rack Room False Floor
Urea S/S
NH
3
S/S
Cooling Tower
S/S
CCR
Cable Tunnel
Cable Gallery
Cable Dist. Room
Rack Room False Floor
Cable Dist. Room
Cable Dist. Room
Rack Room False Floor
CO
2 Storage
Tank Cable Dist. Room
SYSTEM 2: UCR
(Multi Zone)
Pressure: 20 Bar (ABS)
Temperature : - 16~ 20°C
Storage: 8500 Kg Liquid CO
2
Capacity: 02 charge
DAP
CO
2 Storage
Tank
Cable
Tunnel
UCR
Main
Sub-Station
ZONE - 1
ZONE - 3
ZONE - 2
ZONE - 4
ZONE - 5
ZONE - 6
ZONE - 7
ZONE - 8
ZONE - 9
HIGH PRESSURE SYSTEM
Actuating Device
Cylinders
Q
uick A
ction Valve
C
O
2 C
onnecting H
ose
Mechanical Suction
Valve
Actuating Device
Cylinders
Q
uick A
ction Valve
C
O
2 C
onnecting H
ose
Mechanical Suction
Valve
HIGH PRESSURE SYSTEM
Zone: 11
Zone: 10
Battery # 2
13 Cylinders
Electrical
Room
Battery # 1
17Cylinders
Battery # 2
17Cylinders
Battery # 2
22 Cylinders
Battery # 2
22 Cylinders
• 02 parallel batteries of CO
2 cylinders.
• 01 operational and 01 standby.
• Each Cylinder Weight : 45.0 Kg of CO
2
• Working Pressure : 69.0 Bar (Abs)
• Working Temperature : 29 °C
SYSTEM 3: Workshop Sub-Station
(Multi Zone)
SYSTEM 4: DDEG Room
(Multi Zone)
SYSTEM 5: PH&S Sub-Station
(Single Zone)
Zone: 12
Zone: 13
Zone: 14
Cable
Room
Generator
Room
Converter
Room
Electrical
Room
Battery # 1
13 Cylinders
Zone: 11
Zone: 10
Battery # 2
13 Cylinders
Electrical
Room
Battery # 1
17Cylinders
Battery # 2
17Cylinders
Battery # 2
22 Cylinders
Battery # 2
22 Cylinders
• 02 parallel batteries of CO
2 cylinders.
• 01 operational and 01 standby.
• Each Cylinder Weight : 45.0 Kg of CO
2
• Working Pressure : 69.0 Bar (Abs)
• Working Temperature : 29 °C
SYSTEM 3: Workshop Sub-Station
(Multi Zone)
SYSTEM 4: DDEG Room
(Multi Zone)
SYSTEM 5: PH&S Sub-Station
(Single Zone)
Zone: 12
Zone: 13
Zone: 14
Cable
Room
Generator
Room
Converter
Room
Electrical
Room
Battery # 1
13 Cylinders
“Light On” and hooter will sound
after CO2 release
CO
2
release can be abort if this
button is pressed continuously
but within 30 seconds.
Manual light is “ON”
Break glass if system is on Manual
when fire is seen.
Hooter will sound after CO
2
is release
This light will “ON” when on AUTO
& CO
2
will release depends on
actuation of 02 detectors after 30
seconds. During that time, alarm
will sound in the area.
SEQUENCE OF
OPERATION
CO
2
Detector
after CO2 release
CO
2
release can be abort if this
button is pressed continuously
but within 30 seconds.
Manual light is “ON”
Break glass if system is on Manual
when fire is seen.
Hooter will sound after CO
2
is release
This light will “ON” when on AUTO
& CO
2
will release depends on
actuation of 02 detectors after 30
seconds. During that time, alarm
will sound in the area.
SEQUENCE OF
OPERATION
CO
2
Detector
OPERATING PHILOSOPHY
Fire detection by single smoke detector. PRE-ALARM Signal
activated (Bell)
Fire detection by two smoke detectors. FIRE ALARM Signal
(Bell + Siren) and Pre discharge delay time (30 Second) starts.
Solenoid operated actuating device triggered after delay time.
CO2 discharge starts through release devices.
In HP System cylinder battery is completely exhausted. In LP
system CO2 discharge till specified extinguishing time. Release
device closes after wards.
CO2 Released warning sign turns on as soon as fire alarm
signal is activated.
Hooter installed at the entrance starts sounding at CO2 > 4%
Hooter to be reset manually.
Fire detection by single smoke detector. PRE-ALARM Signal
activated (Bell)
Fire detection by two smoke detectors. FIRE ALARM Signal
(Bell + Siren) and Pre discharge delay time (30 Second) starts.
Solenoid operated actuating device triggered after delay time.
CO2 discharge starts through release devices.
In HP System cylinder battery is completely exhausted. In LP
system CO2 discharge till specified extinguishing time. Release
device closes after wards.
CO2 Released warning sign turns on as soon as fire alarm
signal is activated.
Hooter installed at the entrance starts sounding at CO2 > 4%
Hooter to be reset manually.
OPERATING PHILOSOPHY
HVAC system in CCR, UCR and DCR interlocked with CO2
system actuation.
Blower stops and discharge duct damper closes as soon as
two smoke detectors actuate.
Blower will start automatically on system reset. Damper has to
be reset manual for opening.
DDEG & DDAG are also interlocked with CO2 system actuation.
Both will trip as soon as any one of the smoke detectors
actuate.
The system may be switched to either auto or manual mode
Auto Mode
Above sequence triggered on actuation of two smoke
detectors.
HVAC system in CCR, UCR and DCR interlocked with CO2
system actuation.
Blower stops and discharge duct damper closes as soon as
two smoke detectors actuate.
Blower will start automatically on system reset. Damper has to
be reset manual for opening.
DDEG & DDAG are also interlocked with CO2 system actuation.
Both will trip as soon as any one of the smoke detectors
actuate.
The system may be switched to either auto or manual mode
Auto Mode
Above sequence triggered on actuation of two smoke
detectors.
OPERATING PHILOSOPHY
Manual Mode
Fire alarm actuates. Release action triggered by CO2 manual
release button.
In either Auto or Manual mode.
Manual release button may trigger the discharge sequence.
Discharge may be delayed beyond designed delay time. By
keep pressing CO2 Stop button.
CO2 concentration must be retained for atleast 30 minutes.
CO2 evacuation and system resetting to be handled by rescue
squad as per SOP.
System to be reset only after complete elimination of HAZARD.
Manual Mode
Fire alarm actuates. Release action triggered by CO2 manual
release button.
In either Auto or Manual mode.
Manual release button may trigger the discharge sequence.
Discharge may be delayed beyond designed delay time. By
keep pressing CO2 Stop button.
CO2 concentration must be retained for atleast 30 minutes.
CO2 evacuation and system resetting to be handled by rescue
squad as per SOP.
System to be reset only after complete elimination of HAZARD.
Smoke Detector
12
Delay Device
30 Seconds
1.Pre Warning
Horn
Bell
Display Panel
Selector
Switch
Push Button
CO
2
Release CO
2
Stop
SOV
Section
Valve
CO
2
Tank
Pressure Switch
CO
2
Release Sign
Fire
CO
2 Sensor
CO
2
Discharge Nozzle
CO
2 Low
Pressure System
2.Fire
3.CO
2
Release
12
Delay Device
30 Seconds
1.Pre Warning
Horn
Bell
Display Panel
Selector
Switch
Push Button
CO
2
Release CO
2
Stop
SOV
Section
Valve
CO
2
Tank
Pressure Switch
CO
2
Release Sign
Fire
CO
2 Sensor
CO
2
Discharge Nozzle
CO
2 Low
Pressure System
2.Fire
3.CO
2
Release
Fire
Smoke Detector
12
Delay Device
30 Seconds
Horn
Bell
Display Panel
Selector
Switch
Push Button
CO
2
Release CO
2
Stop
Actuating
Device
Section
Valve
CO
2 Cylinders
Pressure Switch
CO
2
Release Sign
Pilot Cylinder
CO
2 Sensor
CO
2
Discharge Nozzle
CO
2
High
Pressure System
1.Pre Warning
2.Fire
3.CO
2
Release
Smoke Detector
12
Delay Device
30 Seconds
Horn
Bell
Display Panel
Selector
Switch
Push Button
CO
2
Release CO
2
Stop
Actuating
Device
Section
Valve
CO
2 Cylinders
Pressure Switch
CO
2
Release Sign
Pilot Cylinder
CO
2 Sensor
CO
2
Discharge Nozzle
CO
2
High
Pressure System
1.Pre Warning
2.Fire
3.CO
2
Release
POINTS TO REMEMBER
Portable fire extinguisher & SCBA unit is available.
Once actuated, CO2 release can not be stopped through panel to stop
manually proceed as follows:
Push CO2 Stop button within 30 second and keep it pressed.
For LP System, ask some one to close the concerned control
gas shut off valve.
For HP System, get actuating lever of pilot cylinder removed.
After confirmation, release CO2 Stop button. CO2 will not be
released.
Above procedure to be adopted only in case of accidental
push of CO2
Manual Release button
Actuating lever of Standby battery should remain detached all
the time
Portable fire extinguisher & SCBA unit is available.
Once actuated, CO2 release can not be stopped through panel to stop
manually proceed as follows:
Push CO2 Stop button within 30 second and keep it pressed.
For LP System, ask some one to close the concerned control
gas shut off valve.
For HP System, get actuating lever of pilot cylinder removed.
After confirmation, release CO2 Stop button. CO2 will not be
released.
Above procedure to be adopted only in case of accidental
push of CO2
Manual Release button
Actuating lever of Standby battery should remain detached all
the time
POINTS TO REMEMBER
No entry in case of sounding of hooter inform concerned unit / section
or safety.
Before entering CO2 protected area:
Close concerned control gas shut off valves (LP System).
Remove actuating lever of pilot cylinder (HP System).
Put system should on “Manual”.
Cross check panel indications.
Before working inside, make sure that:
Escape routes are clear and known to all.
Locations of Manual Release and CO2 Stop Buttons are known
to all.
Exit doors are unlocked.
Lighting is sufficient.
No entry in case of sounding of hooter inform concerned unit / section
or safety.
Before entering CO2 protected area:
Close concerned control gas shut off valves (LP System).
Remove actuating lever of pilot cylinder (HP System).
Put system should on “Manual”.
Cross check panel indications.
Before working inside, make sure that:
Escape routes are clear and known to all.
Locations of Manual Release and CO2 Stop Buttons are known
to all.
Exit doors are unlocked.
Lighting is sufficient.
POINTS TO REMEMBER
Clean smoke detectors after CO2 release.
Odorizer cartridge (LP System) needs replacement after each
release.
CO2 protected areas should be kept clean and clear from
combustibles
Smoke detectors are sensitive to blowing dust, welding fumes.
Hence may be activated during cleaning / welding.
Use vacuum cleaner for cleaning
Regular checks & preventive maintenance is essential for
reliability
Do not reset the system till complete elimination of hazard
Seal all openings in floors of sub stations and panels /
cabinets.
Keep main Sub Station entrance door towards cable tunnel
and shutter door in DDEG closed for effectiveness of CO2 system
Minimum persons to remain in side protected areas during
work.
Clean smoke detectors after CO2 release.
Odorizer cartridge (LP System) needs replacement after each
release.
CO2 protected areas should be kept clean and clear from
combustibles
Smoke detectors are sensitive to blowing dust, welding fumes.
Hence may be activated during cleaning / welding.
Use vacuum cleaner for cleaning
Regular checks & preventive maintenance is essential for
reliability
Do not reset the system till complete elimination of hazard
Seal all openings in floors of sub stations and panels /
cabinets.
Keep main Sub Station entrance door towards cable tunnel
and shutter door in DDEG closed for effectiveness of CO2 system
Minimum persons to remain in side protected areas during
work.
CO
2
FIRE PROTECTION SYSTEM
PURPOSE.
-To extinguish fires in un manned areas (Total 14).
-Mainly covers electrical hazards
SUPPLIER
-M/s TOTAL WALTHER, GERMANY
CODES & STANDARDS
-The system is designed to comply nfpa-12 (National Fire Protection
Association: standard d for CO
2
Extinguishing System)
-Material, supplied, conform to DIN, DDN and TUU standard.
2
FIRE PROTECTION SYSTEM
PURPOSE.
-To extinguish fires in un manned areas (Total 14).
-Mainly covers electrical hazards
SUPPLIER
-M/s TOTAL WALTHER, GERMANY
CODES & STANDARDS
-The system is designed to comply nfpa-12 (National Fire Protection
Association: standard d for CO
2
Extinguishing System)
-Material, supplied, conform to DIN, DDN and TUU standard.
CO
2
FIRE PROTECTION SYSTEM
FIRE COVERAGE
-System is designed to extinguish deep seated fires (Smoldering)
involving electric hazards.
-50% CO
2
concentration in specific duration retention time 30 minutes.
-System also equally covers surface fires min. CO
2 concentration
required : 34%.
-Concentration factor: 1.33 KG/M3 of CO
2
-50% concentration of CO
2 to be achieved in 07 minutes
-But at least 30% concentration of CO
2
to be achieved 2 minutes
2
FIRE PROTECTION SYSTEM
FIRE COVERAGE
-System is designed to extinguish deep seated fires (Smoldering)
involving electric hazards.
-50% CO
2
concentration in specific duration retention time 30 minutes.
-System also equally covers surface fires min. CO
2 concentration
required : 34%.
-Concentration factor: 1.33 KG/M3 of CO
2
-50% concentration of CO
2 to be achieved in 07 minutes
-But at least 30% concentration of CO
2
to be achieved 2 minutes
CO
2
FIRE PROTECTION SYSTEM
TYPE OF SYSTEM
-System is of Total Flooding type.
-Installation consists of
* Three (03) High Pressure (HP) system covering Five (05) area
(Zones) CO
2 storage in the form of battery of cylinders (45 Kg,
67 Bar, 15°C).
* Two (02) Low Pressure (LP) systems covering Nine (09) area
(Zones) CO
2
storage in the form tank (8500 Kg, 20 Bar, -20°C).
-Except One (01) HP system, at PH&S, all area multi Zone
-Selection of Low Or High Pressure is based on
* Size of the protected area.
* Location of the protected area.
* Location and proximity of pipe racks, allowing areas to be
protected by a common system.
* Availability of CO
2 storage rooms in the respective building.
2
FIRE PROTECTION SYSTEM
TYPE OF SYSTEM
-System is of Total Flooding type.
-Installation consists of
* Three (03) High Pressure (HP) system covering Five (05) area
(Zones) CO
2 storage in the form of battery of cylinders (45 Kg,
67 Bar, 15°C).
* Two (02) Low Pressure (LP) systems covering Nine (09) area
(Zones) CO
2
storage in the form tank (8500 Kg, 20 Bar, -20°C).
-Except One (01) HP system, at PH&S, all area multi Zone
-Selection of Low Or High Pressure is based on
* Size of the protected area.
* Location of the protected area.
* Location and proximity of pipe racks, allowing areas to be
protected by a common system.
* Availability of CO
2 storage rooms in the respective building.
OPERATING PHILOSOPHY
Fire detection by single smoke detector.
PRE-ALARM Signal activated (Bell)
Fire detection by two smoke detectors.
Full ALARM Signal (Bell + Siren)
Pre discharge delay time (30 Second) starts.
Solenoid operated actuating device triggered after delay time.
CO
2 discharge starts through release devices.
In HP System cylinder battery is completely exhausted. In LP
system CO
2
discharge till specified extinguishing time. Release
device closes after wards.
CO
2
Released warning sign turns on as soon as fire alarm signal
is activated.
Hooter installed at the entrance starts sounding at CO
2 > 4%
Hooter to be reset manually.
Fire detection by single smoke detector.
PRE-ALARM Signal activated (Bell)
Fire detection by two smoke detectors.
Full ALARM Signal (Bell + Siren)
Pre discharge delay time (30 Second) starts.
Solenoid operated actuating device triggered after delay time.
CO
2 discharge starts through release devices.
In HP System cylinder battery is completely exhausted. In LP
system CO
2
discharge till specified extinguishing time. Release
device closes after wards.
CO
2
Released warning sign turns on as soon as fire alarm signal
is activated.
Hooter installed at the entrance starts sounding at CO
2 > 4%
Hooter to be reset manually.
OPERATING PHILOSOPHY
HVAC system in CCR, UCR and DCR interlocked with CO
2
system actuation.
Blower stops and discharge duct damper closes as soon as
two smoke detectors actuate.
Blower will start automatically on system reset. Damper has to
be reset manual for opening.
DDEG & DDAG are also interlocked with CO
2
system actuation.
Both will trip as soon as any one of the smoke detectors
actuate.
Resetting to be done as per existing procedure.
The system may be switched to either Auto or Manual Mode.
Auto Mode
Above sequence triggered on actuation of two smoke
detectors.
HVAC system in CCR, UCR and DCR interlocked with CO
2
system actuation.
Blower stops and discharge duct damper closes as soon as
two smoke detectors actuate.
Blower will start automatically on system reset. Damper has to
be reset manual for opening.
DDEG & DDAG are also interlocked with CO
2
system actuation.
Both will trip as soon as any one of the smoke detectors
actuate.
Resetting to be done as per existing procedure.
The system may be switched to either Auto or Manual Mode.
Auto Mode
Above sequence triggered on actuation of two smoke
detectors.
OPERATING PHILOSOPHY
Manual Mode
Full alarm actuates. Release action triggered by CO2 manual
release button.
In Either Auto or Manual Mode
Manual release button may trigger the discharge sequence.
Discharge may be delayed beyond designed delay time. By
keep pressing CO
2 – STOP button.
CO
2 concentration must be retained for at least 30 minutes.
CO
2
evacuation and system resetting to be handled by rescue squad as
per SOP.
System to be reset only after complete elimination of hazard.
Manual Mode
Full alarm actuates. Release action triggered by CO2 manual
release button.
In Either Auto or Manual Mode
Manual release button may trigger the discharge sequence.
Discharge may be delayed beyond designed delay time. By
keep pressing CO
2 – STOP button.
CO
2 concentration must be retained for at least 30 minutes.
CO
2
evacuation and system resetting to be handled by rescue squad as
per SOP.
System to be reset only after complete elimination of hazard.
CO
2
AS FIRE EXTINGUISHER AGENT
CLEAN EXTINGUISHING AGENT
Penetrate & spread to all parts of hazards.
Non Reactive.
Electrically Non Conductive.
Leave No residue.
Effective for almost all combustible materials
EXTINGUISHING PRINCIPLE
Displacement of O
2
.
Reduces of O
2 from 21% to < >15%
2
AS FIRE EXTINGUISHER AGENT
CLEAN EXTINGUISHING AGENT
Penetrate & spread to all parts of hazards.
Non Reactive.
Electrically Non Conductive.
Leave No residue.
Effective for almost all combustible materials
EXTINGUISHING PRINCIPLE
Displacement of O
2
.
Reduces of O
2 from 21% to < >15%
CO
2
AS FIRE EXTINGUISHER AGENT
HAZARDS
Hazardous in high concentration.
Exposure limit value : 5000 PPM
Cause suffocation, loss of consciousness, reduce visibility .
52% heavier than air may accumulate in confined spaces.
Particularly at or below ground level.
RELEASE MEASURES
Evacuate area .
Wear SCBA units
Adequate air ventilation
2
AS FIRE EXTINGUISHER AGENT
HAZARDS
Hazardous in high concentration.
Exposure limit value : 5000 PPM
Cause suffocation, loss of consciousness, reduce visibility .
52% heavier than air may accumulate in confined spaces.
Particularly at or below ground level.
RELEASE MEASURES
Evacuate area .
Wear SCBA units
Adequate air ventilation
CO
2
AS FIRE EXTINGUISHER AGENT
FIREST AID MEASURE
Remove victim to uncontaminated area.
Keep him warm & rested.
Provide artificial respiration, if required.
In case of skin / eye contact, flush spray water for at least 15
min.
Obtain medical assistance in any case.
2
AS FIRE EXTINGUISHER AGENT
FIREST AID MEASURE
Remove victim to uncontaminated area.
Keep him warm & rested.
Provide artificial respiration, if required.
In case of skin / eye contact, flush spray water for at least 15
min.
Obtain medical assistance in any case.
DESCRIPTION OF MAIN COMPONENTS
CO
2 STORAGE
CO
2 TANK.
Storage capacity: 8500 KG
Liquid CO
2
at 20 Bar & - 20 °C.
Two refrigeration units
Polyurethane insulation (150 MM)
CO
2
CYLINDER BATTERIES
02 Batteries (Main & Standby) .
Cylinder Containing 45 KG CO
2
(@ 66 KG/L) at 69.3 Bar, 28.8 °C
No. of cylinders depends on CO
2
required.
CO
2 STORAGE
CO
2 TANK.
Storage capacity: 8500 KG
Liquid CO
2
at 20 Bar & - 20 °C.
Two refrigeration units
Polyurethane insulation (150 MM)
CO
2
CYLINDER BATTERIES
02 Batteries (Main & Standby) .
Cylinder Containing 45 KG CO
2
(@ 66 KG/L) at 69.3 Bar, 28.8 °C
No. of cylinders depends on CO
2
required.
DESCRIPTION OF MAIN COMPONENTS
SECTION VALVES
Divert CO2 release to desired zone from header (Multi zone system)
IN LP SYSTEM.
Operated by control gas.
Auto shut off after extinguishing time.
IN HP SYSTEM.
Electricity unlocked on actuation.
Opened by CO
2 flow.
To be locked manually to reset.
Mech. Locking device to block CO
2
SECTION VALVES
Divert CO2 release to desired zone from header (Multi zone system)
IN LP SYSTEM.
Operated by control gas.
Auto shut off after extinguishing time.
IN HP SYSTEM.
Electricity unlocked on actuation.
Opened by CO
2 flow.
To be locked manually to reset.
Mech. Locking device to block CO
2
DESCRIPTION OF MAIN COMPONENTS
SAFETY VALVES
Protect against over pressurization.
LP SYSTEM.
02 PSV on tank. Set point 22 Bars.
01 PSV on header. Set point 25 Bars
HP SYSTEM.
01 PSV on Header. Set point 120 Bar.
NOZZLES .
Discharge CO2 for fire extinguishing .
Different types depending on system (LP / HP) and distribution
pattern required.
Quantity based on required. CO
2 concentration.
SAFETY VALVES
Protect against over pressurization.
LP SYSTEM.
02 PSV on tank. Set point 22 Bars.
01 PSV on header. Set point 25 Bars
HP SYSTEM.
01 PSV on Header. Set point 120 Bar.
NOZZLES .
Discharge CO2 for fire extinguishing .
Different types depending on system (LP / HP) and distribution
pattern required.
Quantity based on required. CO
2 concentration.
DESCRIPTION OF MAIN COMPONENTS
SMOKE DETECTORS .
Intelligent Ionization, type w1251E..
Act as fire sensing device
Each Detector can be identified and programmed individually.
DISCHARGE CONTROL DEVICES .
Auto / Manual Key Switch
Installed at each entrance.
Switch over mode of operation
Auto Mode.
Auto release after delay time.
Manual Mode.
Fire is detected but released manually.
SMOKE DETECTORS .
Intelligent Ionization, type w1251E..
Act as fire sensing device
Each Detector can be identified and programmed individually.
DISCHARGE CONTROL DEVICES .
Auto / Manual Key Switch
Installed at each entrance.
Switch over mode of operation
Auto Mode.
Auto release after delay time.
Manual Mode.
Fire is detected but released manually.
DESCRIPTION OF MAIN COMPONENTS
CO
2
MANUAL RELEASE BUTTON .
Installed at each exit.
Triggers CO
2
release sequence in either Auto or Manual mode.
CO
2 STOP BUTTON.
Installed besides manual release button.
Delays CO2 release if pushed within delay time and kept
pressed.
CO2 released as soon as button is released.
CO
2
MANUAL RELEASE BUTTON .
Installed at each exit.
Triggers CO
2
release sequence in either Auto or Manual mode.
CO
2 STOP BUTTON.
Installed besides manual release button.
Delays CO2 release if pushed within delay time and kept
pressed.
CO2 released as soon as button is released.
DESCRIPTION OF MAIN COMPONENTS
WARING DEVICES.
Alarm Bell & Siren.
Installed in each protected area.
Only Bell Sound Actuation of one smoke detector (Per
Alarm)
Both Bell & Siren Actuation of more than one smoke
detector and Sound (Full Alarm).
CO
2
Sensor / Horn .
Independent warning system
CO
2
Sensor installed inside protected area near exit
Sense CO2 concentration (2% & 4%)
Horn installed outside the area.
Sounding of horn warns against CO2 concentration > 4% no
entry is allowed.
WARING DEVICES.
Alarm Bell & Siren.
Installed in each protected area.
Only Bell Sound Actuation of one smoke detector (Per
Alarm)
Both Bell & Siren Actuation of more than one smoke
detector and Sound (Full Alarm).
CO
2
Sensor / Horn .
Independent warning system
CO
2
Sensor installed inside protected area near exit
Sense CO2 concentration (2% & 4%)
Horn installed outside the area.
Sounding of horn warns against CO2 concentration > 4% no
entry is allowed.
DESCRIPTION OF MAIN COMPONENTS
CO
2 RELEASED SIGN .
Installed at each entrance
Warns against CO
2
release inside
CONTROL GAS PIPING .
In LP System, CO
2
is also used for
Opening / Closing of section valves
Pre-Filling & De-pressurization of CO
2
Header
Separate Piping for each section valve with manual shut off valve.
REFRIGERATION UNITS .
02 units on each tank to keep CO2 within desired temperature range
Switch on / off press. 19.5 / 18.5 Bar
Refrigerant R 22
Modes of Operation
Unit1, Unit 2, Unit 1 & 2, All Units off
CO
2 RELEASED SIGN .
Installed at each entrance
Warns against CO
2
release inside
CONTROL GAS PIPING .
In LP System, CO
2
is also used for
Opening / Closing of section valves
Pre-Filling & De-pressurization of CO
2
Header
Separate Piping for each section valve with manual shut off valve.
REFRIGERATION UNITS .
02 units on each tank to keep CO2 within desired temperature range
Switch on / off press. 19.5 / 18.5 Bar
Refrigerant R 22
Modes of Operation
Unit1, Unit 2, Unit 1 & 2, All Units off
DESCRIPTION OF MAIN COMPONENTS
WEIGHING DEVICES.
LP SYSTEM.
CO
2 tank mounted on a balance to show CO
2 contents.
Alarm in case of loss of CO
2
> 10%
Balance to be adjusted after CO
2
release.
HP System.
CO
2 Cylinder mounted freely on weighing device.
Loss of CO
2 weight > 10 % indicated physically.
WEIGHING DEVICES.
LP SYSTEM.
CO
2 tank mounted on a balance to show CO
2 contents.
Alarm in case of loss of CO
2
> 10%
Balance to be adjusted after CO
2
release.
HP System.
CO
2 Cylinder mounted freely on weighing device.
Loss of CO
2 weight > 10 % indicated physically.
ODORIZER.
Mixed with CO
2 to feel presence.
IN LP system Odorizer cartridge is installed D/S of section
valves
CO
2
pressure breaks the cartridge seal and carries the odorizer
along.
Empty cartridge needs replacement after each release.
In HP system, odorizer is mixed during cylinder filling.
FIRE CONTROL PLANEL (FAST 2000) .
Each system has independent panel for detection of fire and
release of CO
2
discussed separately.
DESCRIPTION OF MAIN COMPONENTS
Mixed with CO
2 to feel presence.
IN LP system Odorizer cartridge is installed D/S of section
valves
CO
2
pressure breaks the cartridge seal and carries the odorizer
along.
Empty cartridge needs replacement after each release.
In HP system, odorizer is mixed during cylinder filling.
FIRE CONTROL PLANEL (FAST 2000) .
Each system has independent panel for detection of fire and
release of CO
2
discussed separately.
DESCRIPTION OF MAIN COMPONENTS
FAST 2000
Separate panel for each CO
2 system.
One indication panel in fire station building.
FAST 2000 MODULES.
Fast 2000 consist of several inter connected modules.
Status displayed by leds on modules
FIRE CONTROL PANEL
Separate panel for each CO
2 system.
One indication panel in fire station building.
FAST 2000 MODULES.
Fast 2000 consist of several inter connected modules.
Status displayed by leds on modules
FIRE CONTROL PANEL
FIRE CONTROL PANEL
RESPONSIBILITY & AUTHORITY: .
Following responsibilities outline important activities that
should be accomplished to satisfy the scope of the procedure.
Ownership:
Owner Unit System Location
Low Pressure
Utility (Ops) Utility Control Room Northside
Urea (Ops) Central Control Room North side
High Pressure
Utility (Ops) Diesel Driven Emergency Generator
PH & S (Ops) PH & S Cable Room
Electrical Workshop Sub Station Cable Room
Following responsibilities outline important activities that
should be accomplished to satisfy the scope of the procedure.
Ownership:
Owner Unit System Location
Low Pressure
Utility (Ops) Utility Control Room Northside
Urea (Ops) Central Control Room North side
High Pressure
Utility (Ops) Diesel Driven Emergency Generator
PH & S (Ops) PH & S Cable Room
Electrical Workshop Sub Station Cable Room
Owner Unit
To coordinate with all concerned as per requirement for
predictive / corrective maintenance.
To conduct audit and monitor the system at least once a week.
To develop & fill check list / log sheet.
To display instructions at relevant places for maintenance,
normal as well as emergency operation.
Fill checklist before working inside CO
2
protected area.
Instrument Unit
Perform maintenance and routine checkup of electronic accessories &
smoke detectors upon requirement. In-order to keep system in perfect
condition, periodic tests shall be performed as per applicable code.
To coordinate with all concerned as per requirement for
predictive / corrective maintenance.
To conduct audit and monitor the system at least once a week.
To develop & fill check list / log sheet.
To display instructions at relevant places for maintenance,
normal as well as emergency operation.
Fill checklist before working inside CO
2
protected area.
Instrument Unit
Perform maintenance and routine checkup of electronic accessories &
smoke detectors upon requirement. In-order to keep system in perfect
condition, periodic tests shall be performed as per applicable code.
Safety Unit
To develop, coordinate and conduct training program with concerned
unit for all concerned personnel.
To conduct an audit and fill check lists ,upon requirement
To arrange refilling of CO
2
in the system, upon requirement.
To coordinate with concerned unit in case of major job i.e.
modification in control logic, repair by VSM beyond normal scope of
FFBL, etc.
To budget the amount in case of point # 3.3 (iv)
Emergency Handling
Following personnel / Units shall be responsible for handling in-case of
emergency and rescue operation:
Coordination Engineer
Concerned Unit
Safety Unit
To develop, coordinate and conduct training program with concerned
unit for all concerned personnel.
To conduct an audit and fill check lists ,upon requirement
To arrange refilling of CO
2
in the system, upon requirement.
To coordinate with concerned unit in case of major job i.e.
modification in control logic, repair by VSM beyond normal scope of
FFBL, etc.
To budget the amount in case of point # 3.3 (iv)
Emergency Handling
Following personnel / Units shall be responsible for handling in-case of
emergency and rescue operation:
Coordination Engineer
Concerned Unit
Safety Unit
Emergency Handling / Rescue in Case of CO
2
Release Alarm:
There are three cases for which rescue operation will be required.
Actuation of 01 smoke detector provides with CO
2
sensors, bell will sound as
“Pre Alarm”
Actuation of CO
2
horn due to presence of CO
2
(due to any condition) or its
malfunction.
CO
2
release upon actuation of two smoke detector then bell and horn both will
sound CO
2
released Indication turn ON
Rescue Operation Equipment:
Self Contained Breathing Apparatus (SCBA)
CO2 Analyzer
Portable Exhaust System
Fire Extinguisher
Emergency portable light
Motorola Sets
2
Release Alarm:
There are three cases for which rescue operation will be required.
Actuation of 01 smoke detector provides with CO
2
sensors, bell will sound as
“Pre Alarm”
Actuation of CO
2
horn due to presence of CO
2
(due to any condition) or its
malfunction.
CO
2
release upon actuation of two smoke detector then bell and horn both will
sound CO
2
released Indication turn ON
Rescue Operation Equipment:
Self Contained Breathing Apparatus (SCBA)
CO2 Analyzer
Portable Exhaust System
Fire Extinguisher
Emergency portable light
Motorola Sets
Rescue Operation:
Action
Following actions are required in any of the cases discussed in point
# 4.3
Inform the Coordination Engineer / Safety Unit through telephone,
radio, intercom or sending someone.
Coordination Engineer will arrange to call the fire squad and inform
the Electrical & Instrument Units.
Member of the fire squad at Safety Unit will arrange the above
mentioned equipment and rush to location as guided by the
Coordination Engineer / Safety Engineer.
Action
Following actions are required in any of the cases discussed in point
# 4.3
Inform the Coordination Engineer / Safety Unit through telephone,
radio, intercom or sending someone.
Coordination Engineer will arrange to call the fire squad and inform
the Electrical & Instrument Units.
Member of the fire squad at Safety Unit will arrange the above
mentioned equipment and rush to location as guided by the
Coordination Engineer / Safety Engineer.
CASE # 1
ACTUATION OF BELL PROVIDED INSIDE CO
2 PROTECTED AREAS :
The CO
2
protected area is equipped with a siren and a bell to warn
against fire inside the area. At the entrances the signs of “CO
2
RELEASED” are also provided.
Sounding of only bell indicates the actuation of any one of the smoke
detectors which may be due to a fire or any malfunction.
Upon observing this indication, fire squad will do the following.
Set the CO
2 actuation switch to “Manual” position.
Wear the SCBA.
Open the door carefully and measure the CO
2
level through CO
2
analyzer.
Enter the area & check for any fire inside. For rack rooms in control
rooms, remove false floor of HVAC vents for checking of any fire.
If there is a minor fire, extinguish it through the portable extinguisher.
Arrange the portable exhaust system for removing the CO
2 gas (If
needed)
When the analyzer shows the safe level (0.03% by volume) of CO
2, and
/ or the sensor horn / beep stop sounding.
Inform the Electrical & Instrument Units for further action.
ACTUATION OF BELL PROVIDED INSIDE CO
2 PROTECTED AREAS :
The CO
2
protected area is equipped with a siren and a bell to warn
against fire inside the area. At the entrances the signs of “CO
2
RELEASED” are also provided.
Sounding of only bell indicates the actuation of any one of the smoke
detectors which may be due to a fire or any malfunction.
Upon observing this indication, fire squad will do the following.
Set the CO
2 actuation switch to “Manual” position.
Wear the SCBA.
Open the door carefully and measure the CO
2
level through CO
2
analyzer.
Enter the area & check for any fire inside. For rack rooms in control
rooms, remove false floor of HVAC vents for checking of any fire.
If there is a minor fire, extinguish it through the portable extinguisher.
Arrange the portable exhaust system for removing the CO
2 gas (If
needed)
When the analyzer shows the safe level (0.03% by volume) of CO
2, and
/ or the sensor horn / beep stop sounding.
Inform the Electrical & Instrument Units for further action.
CASE # 2
ACTUATION OF HORN / BEEP PROVIDED WITH CO
2 SENSORS:
Sensors are provided inside CO
2
protected areas for sensing the CO
2
leakage. Horns installed outside entrance doors to basements and at
certain location inside control rooms are connected with the sensors.
The sensors are also provided with the beep sound indication.
Sounding of beep provided on the sensor indicates the presence of
02 % CO
2 inside.
Sounding of horns indicate the presence> 4% CO
2 inside.
Upon observation these indications, the fire squad will do the
followings:
Set the CO
2
actuation switch to “Manual” position.
Wear the SCBA
Arrange the portable exhaust system for releasing the CO
2 (If needed)
Open the door carefully & measures the CO
2
level through CO
2
analyzer.
When the analyzer shows the safe level (0.03% by volume) of CO
2 gas
and / or the sensor horn / beep stop sounding.
Enter the area and inspect the situation. Reset the sensor manually if
it does not reset automatically.
ACTUATION OF HORN / BEEP PROVIDED WITH CO
2 SENSORS:
Sensors are provided inside CO
2
protected areas for sensing the CO
2
leakage. Horns installed outside entrance doors to basements and at
certain location inside control rooms are connected with the sensors.
The sensors are also provided with the beep sound indication.
Sounding of beep provided on the sensor indicates the presence of
02 % CO
2 inside.
Sounding of horns indicate the presence> 4% CO
2 inside.
Upon observation these indications, the fire squad will do the
followings:
Set the CO
2
actuation switch to “Manual” position.
Wear the SCBA
Arrange the portable exhaust system for releasing the CO
2 (If needed)
Open the door carefully & measures the CO
2
level through CO
2
analyzer.
When the analyzer shows the safe level (0.03% by volume) of CO
2 gas
and / or the sensor horn / beep stop sounding.
Enter the area and inspect the situation. Reset the sensor manually if
it does not reset automatically.
CASE # 3
ACTUATION OF HORN + BELL PROVIDED INSIDE AND CO
2 RELEASE
INDICATION PROVIDED OUTSIDE CO
2
PROTECTED AREAS:
Sound of both bell and siren indicates the actuation of at least two smoke
detectors, clearly alarming against a fire inside room and release of CO
2. CO
2
release indication provided outside the entrance will also be lighted in this
case. In this case, do the following:
Concerned Shift Engineer / Boardman / Area operator to inform Co-
ordintation Engineer or Safety Unit immediately regarding actuation of two
smoke detectors in CO
2
protection zones.
Ask Boardman to wear SCBA.
Vacant the CO
2
protected zone immediately and close the door tightly.
Do not enter CO
2
protected zone, wait 30 minutes after CO
2
release.
Set the CO
2
actuation switch to “Manual” position
Wear the SCBA and open the door carefully.
Measure the CO
2
level through CO
2
analyzer.
Arrange the portable exhaust system for removing the CO
2.
When the analyzer shows the safe level (0.03 % by volume) of CO
2
and / or the
senor horn beep stop sounding.
Inspect the area and situation.
Inform the Electrical & Instrument Unit for further action.
ACTUATION OF HORN + BELL PROVIDED INSIDE AND CO
2 RELEASE
INDICATION PROVIDED OUTSIDE CO
2
PROTECTED AREAS:
Sound of both bell and siren indicates the actuation of at least two smoke
detectors, clearly alarming against a fire inside room and release of CO
2. CO
2
release indication provided outside the entrance will also be lighted in this
case. In this case, do the following:
Concerned Shift Engineer / Boardman / Area operator to inform Co-
ordintation Engineer or Safety Unit immediately regarding actuation of two
smoke detectors in CO
2
protection zones.
Ask Boardman to wear SCBA.
Vacant the CO
2
protected zone immediately and close the door tightly.
Do not enter CO
2
protected zone, wait 30 minutes after CO
2
release.
Set the CO
2
actuation switch to “Manual” position
Wear the SCBA and open the door carefully.
Measure the CO
2
level through CO
2
analyzer.
Arrange the portable exhaust system for removing the CO
2.
When the analyzer shows the safe level (0.03 % by volume) of CO
2
and / or the
senor horn beep stop sounding.
Inspect the area and situation.
Inform the Electrical & Instrument Unit for further action.
Accidental Push of CO
2
Manual Release Button:
Once actuated, CO
2
release can not be stopped through panel. However,
proceed manually as follows:
Push CO
2
stop button within 30 second and keep it pressed.
For Low Pressure System, ask some one to close the concerned control gas
shut off valve.
For High Pressure System, get actuating lever of pilot cylinder removed.
After confirmation, release CO
2 stop button. CO
2 will not be released.
Reset the system after extinguishing time.
2
Manual Release Button:
Once actuated, CO
2
release can not be stopped through panel. However,
proceed manually as follows:
Push CO
2
stop button within 30 second and keep it pressed.
For Low Pressure System, ask some one to close the concerned control gas
shut off valve.
For High Pressure System, get actuating lever of pilot cylinder removed.
After confirmation, release CO
2 stop button. CO
2 will not be released.
Reset the system after extinguishing time.
HOW TO OPERATE CO
2
SYSTEM ON MANUAL MODE
In case of pre alarm indication & bell sounding, check the indication
and alarm message on control panel and emergency immediately
inform coordination engineer / concerned shift engineer.
In case of full alarm signal (both bell & siren sounding) all non
operation personnel shall leave the area immediately.
Ensure that all doors are closed.
Control room personnel should wear live line mask / SCBA.
After confirming smoke or fire under false flooring push CO
2 release
button installed beside exit door.
CO
2
will be released after a delay time 30 sec.
If for any reason CO
2 discharge has to be delayed beyond 30 sec.,
push CO
2 stop button and keep it pressed for desired time. CO
2 will
discharge after 30 sec when button is depressed.
Lift the small lever in the CO
2
manual release button enclosure, so
that rescue squad may reset system afterward.
2
SYSTEM ON MANUAL MODE
In case of pre alarm indication & bell sounding, check the indication
and alarm message on control panel and emergency immediately
inform coordination engineer / concerned shift engineer.
In case of full alarm signal (both bell & siren sounding) all non
operation personnel shall leave the area immediately.
Ensure that all doors are closed.
Control room personnel should wear live line mask / SCBA.
After confirming smoke or fire under false flooring push CO
2 release
button installed beside exit door.
CO
2
will be released after a delay time 30 sec.
If for any reason CO
2 discharge has to be delayed beyond 30 sec.,
push CO
2 stop button and keep it pressed for desired time. CO
2 will
discharge after 30 sec when button is depressed.
Lift the small lever in the CO
2
manual release button enclosure, so
that rescue squad may reset system afterward.
HOW TO OPERATE CO
2
SYSTEM ON MANUAL MODE
In case of pre alarm indication & bell sounding, check the indication
and alarm message on control panel and emergency immediately
inform coordination engineer / concerned shift engineer.
In case of full alarm signal (both bell & siren sounding) all non
operation personnel shall leave the area immediately.
Ensure that all doors are closed.
Control room personnel should wear live line mask / SCBA.
After confirming smoke or fire under false flooring push CO
2 release
button installed beside exit door.
CO
2
will be released after a delay time 30 sec.
If for any reason CO
2 discharge has to be delayed beyond 30 sec.,
push CO
2 stop button and keep it pressed for desired time. CO
2 will
discharge after 30 sec when button is depressed.
Lift the small lever in the CO
2
manual release button enclosure, so
that rescue squad may reset system afterward.
2
SYSTEM ON MANUAL MODE
In case of pre alarm indication & bell sounding, check the indication
and alarm message on control panel and emergency immediately
inform coordination engineer / concerned shift engineer.
In case of full alarm signal (both bell & siren sounding) all non
operation personnel shall leave the area immediately.
Ensure that all doors are closed.
Control room personnel should wear live line mask / SCBA.
After confirming smoke or fire under false flooring push CO
2 release
button installed beside exit door.
CO
2
will be released after a delay time 30 sec.
If for any reason CO
2 discharge has to be delayed beyond 30 sec.,
push CO
2 stop button and keep it pressed for desired time. CO
2 will
discharge after 30 sec when button is depressed.
Lift the small lever in the CO
2
manual release button enclosure, so
that rescue squad may reset system afterward.
INSTRUCTIONS FOR WORK INSIDE CO
2 PROTECTED AREA
(under false floor & inside cable gallery)
Get work permit from concerned area incharge.
Get confined space entry permit separately.
Hold 05 minutes safety talk. Involve safety, operations & maintenance
execution personnel.
Checklist filled and signed by all concerned.
Put CO
2 System on manual mode.
Close gas shut off valve of relevant section only.(In low pressure
system)
Remove lever of pilot cylinder (in high pressure system)
Put caution tag “Work In progress inside” at prominent place of each
exit.
Familiarize with alarm devices & escape routes.
Ensure light is sufficient for work.
At least one SCBA unit is available with maintenance team.
2 PROTECTED AREA
(under false floor & inside cable gallery)
Get work permit from concerned area incharge.
Get confined space entry permit separately.
Hold 05 minutes safety talk. Involve safety, operations & maintenance
execution personnel.
Checklist filled and signed by all concerned.
Put CO
2 System on manual mode.
Close gas shut off valve of relevant section only.(In low pressure
system)
Remove lever of pilot cylinder (in high pressure system)
Put caution tag “Work In progress inside” at prominent place of each
exit.
Familiarize with alarm devices & escape routes.
Ensure light is sufficient for work.
At least one SCBA unit is available with maintenance team.
CHECKLIST FOR WORKING INSIDE
CO2 PROTECTED AREA
DATE: SYSTEM : _______
TIME: ZONE : __________
Sr. # Description Yes NO N/A
Part – A (Before Starting the Job)
1 Work permit issued
2 Area to be entered is clearly mentioned on
work permit
3 Safety Unit /Coordination Engineer informed.
4 Maintenance crew lead man designed Name.
5 Oxygen sufficient for entry
6 Light sufficient for working
7 Informed concerned unit
8 System put on manual
9 Control gas shut off level of the zone close. In
LP system.
(One person deputed here)
10 Actuating lever of pilot cylinder has been
removed in HP system.
(One person deputed here)
11 Blocked indication check on control panel
12 Location of CO2 manual released / CO2 stop
button know to all.
13 All entrances / exits has been tagged
14 All exit doors are unlocked
15 Escape route clear and know to all
16 SOP for working inside CO2 protected area is
clear to all.
17 SCBA set available
18 Fire extinguisher is available.
SIGNATURE
AREA OPERATOR
SIGNATURE
SHIFT ENGINEER
SIGNATURE
MAINTENANCE ENGINEER
Annexure - 03
CO2 PROTECTED AREA
DATE: SYSTEM : _______
TIME: ZONE : __________
Sr. # Description Yes NO N/A
Part – A (Before Starting the Job)
1 Work permit issued
2 Area to be entered is clearly mentioned on
work permit
3 Safety Unit /Coordination Engineer informed.
4 Maintenance crew lead man designed Name.
5 Oxygen sufficient for entry
6 Light sufficient for working
7 Informed concerned unit
8 System put on manual
9 Control gas shut off level of the zone close. In
LP system.
(One person deputed here)
10 Actuating lever of pilot cylinder has been
removed in HP system.
(One person deputed here)
11 Blocked indication check on control panel
12 Location of CO2 manual released / CO2 stop
button know to all.
13 All entrances / exits has been tagged
14 All exit doors are unlocked
15 Escape route clear and know to all
16 SOP for working inside CO2 protected area is
clear to all.
17 SCBA set available
18 Fire extinguisher is available.
SIGNATURE
AREA OPERATOR
SIGNATURE
SHIFT ENGINEER
SIGNATURE
MAINTENANCE ENGINEER
Annexure - 03
CHECKLIST FOR WORKING INSIDE
CO2 PROTECTED AREA
DATE: SYSTEM : _______
TIME: ZONE : __________
Sr. # Description Yes NO N/A
Part – B (After Completion the Job)
1 House keeping OK
2 Removed all unnecessary items
3 All persons are out of the area
4 All entrance exit doors has been closed
5 System switched to auto mode (If it is
recommended).
6 Safety Unit / Coordination Engineer informed
about completion of work.
7 Concerned unit has been informed
8 Open gas shut off valve of LP system
9 Re fixed actuated lever of pilot cylinder in HP
system.
SIGNATURE
AREA OPERATOR
SIGNATURE
SHIFT ENGINEER
SIGNATURE
MAINTENANCE ENGINEER
Annexure – 03A
CO2 PROTECTED AREA
DATE: SYSTEM : _______
TIME: ZONE : __________
Sr. # Description Yes NO N/A
Part – B (After Completion the Job)
1 House keeping OK
2 Removed all unnecessary items
3 All persons are out of the area
4 All entrance exit doors has been closed
5 System switched to auto mode (If it is
recommended).
6 Safety Unit / Coordination Engineer informed
about completion of work.
7 Concerned unit has been informed
8 Open gas shut off valve of LP system
9 Re fixed actuated lever of pilot cylinder in HP
system.
SIGNATURE
AREA OPERATOR
SIGNATURE
SHIFT ENGINEER
SIGNATURE
MAINTENANCE ENGINEER
Annexure – 03A
THANKS YOU
FOR YOUR TIME
FOR YOUR TIME
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