Tuesday, April 22, 2014

Fire Alarm Requirements for Group H Occupancy

Group H: (Hazardous)


Systems only need to be monitored if the facility has 20 + sprinkler heads.

A manual fire alarm system (pull stations) that activates the occupant notification system (horns, strobes, sounders, speakers, chimes, mass notification, etc.) shall be installed in occupancies with a classification of H-5 or areas used to manufacture organic coatings.

An automatic smoke detection system shall be installed in areas with highly toxic gases, organic peroxides and oxidizers.

UL 268 Automatic Smoke Detection Requirements:


System smoke detectors shall be provided for all of the following applications:

Above control panels and power supplies
For the purpose of elevator capture
On all HVAC units over 2,000 CFM (Duct Detector)
For releasing service
Fire Smoke Dampers
Delayed egress locks

Fire Alarm Notification Requirements:


Public Mode Audibility: You must have 15 dB above average ambient sound level or 5 dB above the maximum sound level for at least 60 seconds whichever is greater.