Download - Fire protection system, inspection and test
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Fire Protection SystemInspection and Test
อั�งกุ�ศ รุ่� �งแสงจั�นทรุ่�
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Fire Protection Systems
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เท�าน�!น• รุ่ะบบจัะต้�อังต้รุ่วจัสอับและทด้สอับได้�
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Inspection and Test
• Inspection• Test– Periodic Test– Acceptance Test
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Fire Protection Systems
• Sprinkler• Water Spray• Clean Agent
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Sprinkler System
• Wet pipe• Preaction– Single Interlock– Double Interlock
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Sprinkler System
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Manual
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Automatic Sprinkler
• Listed spray pattern• Sensitive to obstruction
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Automatic Sprinkler
• Listed temperature rating
• Listed discharge coefficient
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Wet Pipe
• Continuously charged• Immediate discharge
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Preaction
• Continuously monitored by compressed air
• Require fire detection system
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Single Interlock
• Water charge in system piping upon operation of alarm device
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Double Interlock
• Water charge in system piping upon operation of alarm device and sprinkler opening
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Preaction sprinkler
• Upright sprinkler• Dry sprinkler• Pendent sprinkler in
return bends and branch lines are above 4C
• Horizontal sidewall sprinkler installed so that water is not trapped
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Required Information
• As-Built drawings• AHJ additional
requirements• Calculation sheets• Data sheets• User Manual• Maintenance Manual
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Inspection
• Occupancy classification
• Protected area• Discharge area• System demand• Flow at most
remote sprinkler
• Flow at system riser
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Inspection
• Location and quantity of equipments
• Pipe size and routing
• Sprinkler obstructions– Pattern
development obstruction
– Water distribution obstruction
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Inspection
Sprinkler obstructions• Pattern development• Water distribution
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Sprinkler obstruction
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Sprinkler obstruction
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Sprinkler obstruction
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Hydrostatic test• 200 psi (13.8
bar) without loss for 2 hours
• Test pressure shall be read from a gauge located at the low elevation point of the system
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Air test (Preaction)
• 40 psi (2.8 bar) with less than 1-1/2 psi (0.1 bar) in 24 hours
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Operational test• Open Inspector’s test
connection• Alarm expected
within 5 minutesPreaction• Activate alarm device• Open Inspector’s test
connection• Water discharge
expected within 1 minute
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Operational test
• Open main drain valve and leave open until pressure stabilized
• Close and open each control valves under system water pressure
• Open and flow test all pressure reducing valve
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Water Spray System
• Open nozzle• Normally empty pipe
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Water Spray Nozzle
• Predetermined pattern• Sensitive to wind draft
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Required Information
• As-Built drawings• AHJ additional
requirements• Calculation sheets• Data sheets• User Manual• Maintenance Manual
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Inspection
• Protected hazard• Design density• Protected area• System demand
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Inspection
• Location and quantity of equipments
• Nozzle pattern and location
• Pipe size and routing
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Hydrostatic test
• 200 psi (13.8 bar) without loss for 2 hours
• Test pressure shall be read from a gauge located at the low elevation point of the system
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Operational test
• Test system actuation as per manufacturer’s manual
• Discharge test (Automatic, Manual, Emergency)
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Clean Agent System
• Carbon Dioxide• Inert Gases• Synthetic Gases
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Clean Agent System
• Normally empty pipe• 10 seconds – 60
seconds discharge• Require Automatic
detection and control
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Carbon Dioxide
• Stored in liquid or superheated gas state
• No pressure gauge• Quantity check only by
weighing• Flow in two phases• Very low temperature
discharge• Nominal 60 seconds
discharge
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Inert Gas
• Stored in high pressure compressed gas state
• Pressure gauge represent gas quantity
• Flow in gas state• Nominal 60 seconds
discharge
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Synthetic Gas
• Stored in liquid state under Nitrogen propellant
• Pressure gauge represent propellant quantity
• Weighing or liquid level measuring for agent quantity
• Discharge within 10 seconds to prevent decomposition products
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Required Information
• As-Built drawings• AHJ additional
requirements• Calculation sheets• Data sheets• User Manual• Maintenance Manual
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Inspection
• Protected hazard
• Design concentration
• Protected volume
• System demand
• Discharge duration
• Operation sequence
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Inspection• Location and
quantity of equipments
• Cylinder fills• Propellant pressure
level (if available)• Cylinders are secured
as per the design• Nozzle pattern and
location• Pipe size and routing• Protected area
dimensions
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Inspection• Location of control panel• Location of field devices• Location of interface
control panel• Location of field devices• Wiring gauge and
conduit size• Dedicated power source• Standby power source or
integral battery
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Inspection
Carbon Dioxide• Lock out valve MUST be
provided in each protected volume
• NO Abort switch
Inert and Synthetic Gas• Maintenance lockout
switch shall be provided• Abort switch shall be
provided
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Hydrostatic test
Carbon dioxide• Not required
Inert or Synthetic Gas• 40 psi (2.7 bar) with no
more than 20% for 10 minute
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Discharge test (Carbon Dioxide)
• Oxygen sensor with data logger
• Less than 10% Oxygen concentration
• 10 minute retention time
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Room integrity test• Maximum
protected height
• Retention period
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Operational test
• Notify all concerning parties
• Disarm the system
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Operational test• Alarm device and
alarm response• Automatic actuation
sequence• Abort function• Manual actuation• Emergency
actuation• Main/Reserve
changeover• Supervisory devices• Interface
verifications
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Operational test
Trouble supervision• Initiating circuits• Indication
circuits• Release circuits• Main power
supply• Standby power
supply