Chapter 6 Portable Fire Extinguishers


Portable fire extinguishers are classified according to: 246

The types of fire for which they are intended

The classification and numerical rating system for portable extinguishers is based on tests conducted by: 246

Underwriters laboratories and Labs of Canada

Wether a particular dry powder is applied with extinguishers/scoop:

Sufficient depth to cover complete area and smother fire

In the PASS method, what does the first “S” stand for?

Squeeze the handles together

What information should be on an inspection tag?

Last inspection, maintenance, and repair

Most fired codes require that portable fire extinguishers be inspected: 252

At least once a year

Leaking, corroded, or damaged cartridge shells?

Should be taken out of service and sent to manufacture for repair

Who is responsible for maintaining extinguisher:

Business owner

In the PASS method of application, what does the second “S” indicate? 251

Sweep the nozzle back and forth

Which of the following fire extinguishers were discontinued because of their ozone depleting potential?

Halon

Which of the following is NOT a factor to consider in selection of the proper fire extinguisher? 249

cost of extinguisher

Which of the following is NOT an item to check for immediately before using a portable extinguisher? 250

Manufacturer ID number

In the PASS method of application, what does “A” indicate? 251

Aim the nozzle

Which portable fire extinguisher method is currently recommended in NFPA 10 and also show the types of fires on which extinguishers should not be used? 248

Pictographs

Which of the following extinguishers should NOT be selected for use in areas where highly sensitive computer equipment is located? 250

Dry Chemical Extinguishers

The class A rating of water extinguishers is primarily based on the duration and the range of the discharge used in extinguishing test fires and ______ . 247

The amount of extinguishing agent

Class C rating on fire extinguishers indicates the extinguishing agent: 247

Will not conduct electricity

Which extinguisher rating must be capable of saponifying vegetable oil, peanut oil, canola oil, and other oils with little fatty acids? 248

Class K

Which of the following extinguishers are for use on Class ABC fires and/or Class BC fires and are among the most common portable fire extinguishers in used today? 243

Dry Chemical extinguisher

Which of the following extinguishers are pressurized with argon gas and effectively cool and smother fires in Class A and Class B fuels? 241

Clean agent extinguishers

Which of the following extinguishers are safe to use on energized electrical equipment?239

Water mist stored pressure extinguisher

Which of the following extinguishers prevent reignition by the upper seal crested by the film of water? 241

Aqueous film forming extinguishers

Which of the following extinguishers uses deionized water as the agent and nozzles that produce a fine spray instead of a solid stream? 239

Water mist stored pressure extinguisher

Which of the following extinguishers are often used for extinguishing confined hot spots during overhaul operations? 237

stored pressure water extinguishers

The method by which agents extinguish fire by interrupting the chemical chain reaction is: 234

Chain Breaking

Which of the following fire classifications involve combustible cooking oils? 237

Class K Fires

Which of the following involve combustible metals and alloys: 237

Class D

The method by which agents extinguish fire by forming an oxygen excluding soapy foam is: 234

Saponification

Which classification is ordinary combustibles?

Class A

Which of the following extinguishers are intended for use on small Class A fires only and are equipped with either a single or double acting pump?

Pump type water extinguishers

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