Networking Fire Suppression

health and safety regulation dictates what to put in place to detect and suppress fires
elements of fire safety:
- well-marked fire exits
- emergency evacuation procedure
- building design that does no allow fire to spread quickly
  - separating different areas with fire-resistant walls and doors
- automatic smoke or fire detection system

Fire Triangle

fire suppression system works on the basis of a fire triangle
- works on principle that fire requires heat, oxygen, and fuel
- removing one provides fire suppression and prevention

fires are divided by class under National Fire Protection Association (NFPA)
- based on the fuel of fire
wet-pipe sprinklers work automatically, triggered by heat, discharge water
- constantly hold water at a high temperature
- can burst
alternatives to wet-pipe systems:
- Dry-pipe — water only enters this part of the system if sprinklers elsewhere are triggered
  - used where freezing is possible
- Pre-action — only fills with water when an alarm is triggered, then spray when the heat rises
  - protects against accidental discharge, burst pipes, provides time to manually put out fire first
- Halon — gas-based system
  - doesn’t short circuit electrical system, leaves no residue
  - use of Halon is banned bc it is ozone depleting
- Clean agent — alternatives to halon
  - not environmentally damaging
  - E.g., INERGEN, FM-200/HFC-227, FE-13
  - deplete the concentration of oxygen and have a cooling effect