ANSWERS GRADED A+
✔✔Extinguishers must be installed ___________ from the ground. - ✔✔4 inches
✔✔Where might Obstacle type fire take place? - ✔✔in flammable liquid storage
cabinets, dip tank process areas, ect.
✔✔To make sure the pressure gauges of CO2 extinguishers are showing adequate
pressure, what must you do? - ✔✔must be weighed
✔✔Wetting agent portable extinguishers must be hydrostatic tested every
___________. - ✔✔5 years
✔✔When should leak tests be performed on stored pressure extinguishers? - ✔✔after
recharge
✔✔How do you convert fire extinguishers from one type to another? - ✔✔you don't
✔✔When can remaining dry chemicals in a discharged extinguisher be used and under
what circumstances? - ✔✔only if checked for proper type, contamination, and condition.
CLOSED RECOVERY system needs to be used!
✔✔Under what circumstances do extinguishers not need any verification of service
collar installed? #1 - ✔✔#1 new extinguishers needing charge in the field
✔✔How do you have an extinguisher converted to use a different type of extinguishing
agent? - ✔✔you don't
✔✔When does the gauage used to set the regulated source of pressure need to be
calibrated? - ✔✔annually
✔✔When does a pump tank calcium chloride based antifreeze extinguisher need to be
recharged? - ✔✔annually
✔✔What is the OSHA specified max distance to a Class D extinguisher? - ✔✔75 ft
✔✔When recharging, how should the amount of recharge agent be verified? - ✔✔by
weighing
✔✔What type of extinguishers must have hydrostatic tests every 5 years? -
✔✔Aqueous Film Forming Foam (AFFF)
, ✔✔When should the wetting agent in stored pressure wetting extinguishers be
replaced? - ✔✔annually
✔✔When should the premized agent in liquid charge AFFF and FFFP extinguishers be
replaced? - ✔✔every 3 years
✔✔Under what circumstances do extinguishers not need any verification of service
collar installed? #2 - ✔✔#2 cylinder-operated extinguisher
✔✔T/F You are free to mixmultipurpose dry chemicals with alkaline based dry
chemicals. - ✔✔False
✔✔What circumstance should be avoided? - ✔✔subsurface injection of wet chemical
extinguishing agents into hot cooking media
✔✔T/F You should NEVER place extinguishers in cabinets or wall recesses. - ✔✔False
✔✔How often must CO2 portable extinguishers go through hydrostatic testing? - ✔✔5
years
✔✔What are special hazards? - ✔✔pressurized gas fires and pressurized flammable
liquids
✔✔What type of extinguishers with agents other than dry chemicals are not very
effective on special hazards? - ✔✔type B
✔✔How do you adjust regulators that are utilized on wheeled fire extinhuishers? -
✔✔Do not attempt
✔✔T/F You do not need to keep permanent file record for each extinguisher unless it
has been in use for over 1 and 1/2 years. - ✔✔False
✔✔Permanant File Record is needed for each extinguishers including: -
✔✔maintenance date, name, and agency performing maintenance
✔✔What is dry nitrogen used as? - ✔✔an expellant gas for stored-pressure fire
extinguishers
✔✔What circumstance is not recommended? - ✔✔connecting the fire extinguisher to
the high pressure source for direct charging
✔✔T/F The problem with halon agent is that it leaves a lot of residue after use. -
✔✔False