Deck General · Fixed Fire Systems
A sprinkler system that holds water in the pipes at all times and opens individual heat-activated heads is called a:
- ADeluge system
- BPre-action system
- CWet pipe system✓ Correct
- DDry pipe system
Explanation
A wet pipe sprinkler system maintains pressurized water in the distribution piping at all times. Individual sprinkler heads have a heat-sensitive fusible element that opens when the temperature at that head reaches its rated temperature, releasing water only at the location of the fire. Deluge systems open all heads simultaneously. Dry pipe systems use pressurized air to hold a valve closed until heat activates a head.
Authority: Firefighting (USCG deck topic)
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