Fire Protection & Low Voltage Monitoring Systems Flashcards
What activates the sprinkler heads?
heat
Portable fire extinguishers are limited as follows:
a maximum floor area of 11,250 sq ft (1045.2 m2) in all Class ‘A’ fire hazards
Fire protection includes both
fire containment and fire suppression
fire protection 3 goals
protection of life & property and restoration and use of the building after a fire
___ sets specific requirements for the installation, location, and maintenance of smoke detection systems.
NFPA 72
____ specifies requirements for flame-detection alarm systems or radiant energy-sensing systems.
NFPA 101
3 types of flame detectors
optical detectors, UV detectors, infrared detectors
This detector aims a light beam into the room or space. When smoke blocks the beam, it sets off an alarm. These are best for heavy smoke fires.
photoelectric detector
This detector reacts to an increase in temperature within a space. Because rising temperatures indicate flames, this alarm may be too late to stop a fire.
rise of temperature detector
This detector senses ultraviolet or infrared light from flames. Like the rise in temperature detectors, flames might be detected too late to stop a fire.
flame detector
These combine fire suppression and smoke suppression within building components, including doors, windows, and HVAC systems.
fire-resistant barriers
IBC requires sprinklers in buildings over
75 ft high
For use with ordinary combustibles, such as wood or paper. Water is the primary extinguishing agent.
Class A
For use with spilled flammable liquids, such as grease, oil, or gasoline, and designed to smother the fire and not spread the burning liquid.
Class B
For use in electrical fires. The extinguishing agent is non-conductive so as not to spread the fire.
Type C
For use on flammable metals. These extinguishers generally have no multipurpose rating for use on other types of fires.
Type D
For use in fires involving combustible cooking components and fires involving cooking oils used in commercial cooking equipment.
Type K
In a Fire Extinguisher Class A space, no occupant can be more than ___ feet from a fire extinguisher when fire extinguishers are required
75
Fire extinguisher requirements for up to 40 lbs
top at max 5 ft AFF
Fire extinguisher over 40 lbs
top at max 3.5 ft AFF
FEC Symbol
Fire Extinguisher Cabinet
In no case shall the clearance between the bottom of the hand portable fire extinguisher and the floor be less than
4 inches
Low voltage systems are electrical systems that use ___ volts (V) of electricity or less.
50
commercial low voltage systems
fire protection systems, security systems, and sound & communication systems
4 intrusion detection systems
perimeter protection, area/room protection, object protection, electronic surveillance shielding
Passive systems focus on factors affecting the
external building envelope: water, air vapor, and thermal.
These control systems address heating, cooling, ventilation, lighting, power, access to the building, or shading.
active systems
In general, supervisory control center systems are called
building automation systems (BAS)
