Chapter 6: Fire Extinguishers

When fighting a Class B fire with a portable extinguisher, it is important to sweep the fire back with side-to-side motions. During these sweeps side to side, each sweep must _________

Be at least 6 inches past each side

Which class of fire extinguishing agent recommends consulting NFPA 48 Storage and Handling of Magnesium?

Class D

A Class "K" fire is best defined as ________

Combustible cooking media

A Class "D" fire is best defined as ________

Combustible metals or combustible metal alloys

True or False: A higher UL rating on extinguishers equates to greater fire fighting capability

False

True or False: If there is a fixed fire suppression system in a building, then portable fire extinguishers are not required in the structure

False

True or False: It is acceptable to use Halotron I or Halon 1211 in food preparation areas

False

True or False: The salts of potassium are less effective on flammable liquid fires than the salts of sodium

False

A Class "B" fire is best defined as ________

Gasoline, oils, paint, lacquer, and tar

What are the two types of Halogenated Agents?

Halon 1211 and 1301

A Class "C" fire is best defined as ________

Live electrical equipment

Fire extinguishers must meet the requirements of which NFPA standard?

NFPA 10

PASS stands for _______

Point Aim Squeeze Sweep

When recharging a fire extinguisher, always use a regulated pressurizing source set to no more than ______ psi above the extinguishers operating pressure.

25 psi

As per NFPA 10, fire extinguishers are to be inspected at a minimum of ______ intervals

30-day

Water, foam, wet chemical, and carbon dioxide extinguishers require a ______ year hydrotest

5 year

The reaction known as saponification is best defined as ________

A solution that is alkaline in nature and reacts with the fatty acids in a cooking medium to form a soapy foam

Which extinguisher class is designed as an alternative to halon in areas where contamination must be kept to a minimum?

AFFF

The primary advantage of halogenated agents is _______

They require no clean up after being used

True or False: A violent explosion could occur if using an ABC dry chemical, Halon 1211 or Halotron I fire extinguisher on fires involving oxidizers

True

True or False: Most Class D agents will usually exclude oxygen and perform as a "heat sink" to absorb thermal energy

True

True or False: When fighting a three-dimensional fuel fire with an extinguisher, if the ground fire re-ignites at any point during the application, the dry chemical stream must be brought back to the ground fire in order to be successful

True

A Class "A" fire is best defined as _________

Wood, paper, rubber, fabrics, and many plastics