25 - Sprinklers, detectors, panels, elevators Flashcards
(6 cards)
Types of sprinkler systems: (6)
Wet-pipe
Dry-pipe
pre-action
Deluge
Residential
Special extinguishing systems
Sprinkler head components: (5)
Valve cap
Levers
Fusible link
Arms
Deflectors
Sprinkler orientations: (3)
Pendant
Upright
Sidewall
Methods of detection: (5)
Fixed temperature detection (Fusible link)
Rate of rise detection
Smoke detection (photoelectric cell)
Flame or flash detection
Vapour detection (2 stage, alarm at 50% LEL, activate sprinkler at 75% LEL)
Sprinkler head mechanisms: (4)
Fusible link
Frangible bulb
Chemical pellet
Fusible link-quick response type
Subsections of the 3 main standpipe types (wet, dry, wet/dry combination):
Automatic-wet systems
Automatic-dry systems
Semi automatic-dry systems
Manual-dry systems
Manual-wet systems