AND ANSWERS GRADED A+
✔✔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
✔✔What may be weakened when under fire exposure? - ✔✔the structure integrity og
aluminum shelves
✔✔T/F The system used to rate effectiveness of extinguishers on Class B fires is
applicable to pressurized flammable liquid. - ✔✔False
✔✔_________ _______ _________ agents offer greater capabilities when compared to
sodium bicarbonate agents. - ✔✔Potassium base bicarbonate
✔✔There are several types of dry chemical agents. What is the problem with potassium
chloride based agents? - ✔✔Corrosive
✔✔Of all dry chemical agents, only __________ ___________ _________ __________
are suitable for Class A protection. - ✔✔Ammonium phosphate based agents
✔✔Water type extinguishers are primarily for handling __________ fires. - ✔✔Class A
✔✔T/F Backpack pump extinguishers should be avoided because they do not have a
designated rating. - ✔✔False
, ✔✔Water mist extinguishers can only use ____________. - ✔✔Distilled water
✔✔T/F For safety, portable extinguishers should NOT be installed in a location
accesible to the hazard. - ✔✔False
✔✔All nonrechargable extinguishers come with maximum useful life cycles of no more
than______ - ✔✔the date printed on the nameplate
✔✔Where can Carbon Dioxide extinguishers be dangerous? - ✔✔in unventilated
locations
✔✔T/F Extinguishers should be CO2 or halogenated agent types when computer
equipment is in the location of fire. - ✔✔True
✔✔What type of fires can halotron fight? - ✔✔A, B, C
✔✔What is a suitable replacement for a Halon 1211? - ✔✔CleanguardFE 36 because it
is less toxic and has 0 ozone depletion potential
✔✔The pressure in a hydrostatic test of a cylinder shall be maintained for a minimum of
__________ second. - ✔✔30
✔✔What can you only use in cartridge operated extinguishers? - ✔✔dry chemical and
dry powder
✔✔________ _____________ and _______________ extinguishers require 6 and 12
year hydrostatic testing. - ✔✔Dry chemical and halogenated
✔✔Which extinguishers require 5 year maintenance and hydrostatic testing? -
✔✔Water, AFFF, CO2, and FFFP extinguishers
✔✔Class A extinguishers are rated for _____________. - ✔✔wood
✔✔Class B extinguishers are rated for _______________________. - ✔✔2" depth
heptane fires in square pans
✔✔Explain a fire extinguisher that is rated 4-A and 20 B:C - ✔✔it is twice as much as a
2-A and 20 times as much as a 1:B, suitable for C fires
✔✔If a cylinder has welding, broken threads, nicks or corrosion, then it is ___________.
- ✔✔condemned