In sensitive facilities such as computer server rooms and archival vaults, conventional wet-pipe sprinkler networks present a severe danger of catastrophic accidental water leakage. Facilities instead install double-interlock pre-action systems, which keep distribution piping dry until two distinct triggers occur. First, electronic smoke detectors must identify an active combustion event to open the main deluge valve, allowing pressurized water to flood the dry piping network. Second, the thermal element in an individual sprinkler head must fuse from intense heat before extinguishing agent actually disperses. Consequently, if a pipe or sprinkler head is mechanically severed without smoke present, no water discharges, safeguarding electronic equipment from inadvertent flooding.
According to the passage, what is required to initiate the flow of water into the dry piping network?
- AThe thermal element in an individual sprinkler head must fuse from intense heat.
- Sensors must recognize signs of combustion to open the primary valve.Cevap
- CPressurized water flooding the dry network must activate the smoke alarm system.
- DFacility personnel must manually disengage the main shutoff valve during an emergency.