Transcript Automatic Sprinkler Systems - Louisiana State University

Automatic Sprinkler Systems
Chapter 13
Ricky Phillips, Instructor
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Automatic Sprinkler Systems
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Most reliable fixed extinguishing system
No reported multiple deaths in a
completely sprinkled building
Controls 70% of all fires with five or
fewer sprinklers activated
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Automatic Sprinkler System
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Consist of sprinkler heads
– arranged to automatically distribute water
directly to the fire
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Water supplied through a system of
piping
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Two types of Sprinkler Coverage
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Complete Sprinkler Coverage
– protects the entire building
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Partial Sprinkler Coverage
– protects only certain areas
• high hazards, exit routes, places required by
code or AHJ
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NFPA 13
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Standard for the Installation of Sprinkler
Systems
Requirements on spacing, pipe size,
and all details concerning the
installation of sprinkler systems
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NFPA 13D
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Standard for the Installation of Sprinkler
Systems in One and Two Family
Dwellings and Mobile Homes
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FM or UL Listings
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All parts of system regulated by
– Factory Mutual
– Underwriters Laboratories
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Effects on Life Safety
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Life Safety is enhanced
– fire is extinguished will small
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Combustion products are limited
– extinguishment in incipient stage
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Presence is crucial in high-rise buildings
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System Fundamentals
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Sprinklers
Sprinkler Design
Sprinkler Storage
Control Valves
Water Flow Alarms
Water Supply
Fire Department Connection
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Ricky Phillips, Instructor
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Sprinklers
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Discharge water
Fusible Link
Glass Bulb
Chemical Pellet
Quick Response
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Sprinkler Design
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Pendant
Upright
Sidewall
Special Sprinklers
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Sprinkler Storage
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Storage Cabinet
– extra heads
– sprinkler wrench
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Changing sprinkler heads should only
be performed by representatives of the
building’s occupants.
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Control Valves
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OS&Y Valve
Post Indicator Valve (PIV)
Post Indicator Valve Assembly (PIVA)
Operating Valves
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Waterflow Alarms
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Hydraulic or electrical
warn of water movement in system
Hydraulic alarm sounds local
Electrical alarm sounds local and fire
alarm system
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Water Supply
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Fire Department Connection
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Provides outside source of water supply
Consists of at least two 2-1/2” female
connections or one LDH connection
Supplied by pumper with minimum
1,000 gpm pump or greater
Minimum of two 2-1/2” lines
PDP of 150 psi.
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Types of Systems
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Wet-Pipe
Dry-Pipe
Pre-Action
Deluge
Residential
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Wet-Pipe System
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Dry-Pipe System
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Deluge System
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Pre-Action System
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Residential System
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Factors & Considerations
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Controlling Water Flow from a
Sprinkler Head
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