Fire extinguishers are the first line of defense in a fire.  Fire extinguishers should be provided in the shop/s and clearly marked for easy location. Tools, equipment or stored props should not interfere with access to the extinguisher in an emergency. Extinguishers should be inspected monthly to insure readiness and replaced immediately if damaged or discharged.

 

    The National Fire Protection Association (NFPA) lists five classifications for fires:

Ø Class B – flammable or combustible liquids

Ø Class C – energized electrical equipment (appliances, power tools, hot plates, panel boxes, computers)

Ø Class D – Combustible metals

Ø Class K – Kitchen fires

 

    The most common types of extinguishers found in prop shops are pressurized dry chemical (Type BC or ABD) and carbon dioxide (CO2). 

Dry chemical extinguishers are the best all around choice for common fire hazards leaving a blanket of non-flammable dry chemical over the fire area preventing re-ignition.  This dusty chemical residue can be a huge mess but preferable to having a big fire.  Type BC extinguishers contain sodium or potassium bicarbonate.  Type ABC extinguishers use ammonium phosphate.  Dry chemical extinguishers should not be used around computers as they cause extensive corrosion damage.

 

CO2 (Carbon dioxide) extinguishers are for Class B and C fires.  Since they do not emit a blanketing reside they are less effective on Class A fires which tend to reignite.  However, the advantage of leaving no harmful residue makes them a good choice for use around tools or computers, especially on an electrical fire.

 

    Water extinguishers or even using water from a hose or other source is only suitable for Class A fires.  Water is one of the least effective methods of putting out a fire and will actually spread class B, C, and D fires.

 

    Employees should be trained in safe fire fighting procedures including building evacuation, extinguisher usage, and fire safety protocols. Training and practice in using a fire extinguisher should be part of annual training or review for every employee.  Containing a small fire with a fire extinguisher is preferable to letting a fire burn until the fire department arrives but only if the fire is small, contained, and no imminent peril exists for the person/s fighting the fire.  When in doubt about controlling a fire, call for help, pull the fire alarm, close (but do not lock) the doors to the area, and evacuate the building to wait for the fire department.

Fire Protection