NFPA 10 Chapter 4-8

Question 1

What kind of extinguishers cannot contain an agent that is a conductor of electricity?

Answer 1

Extinguisher with Class C rating

Question 2

*Pressurized water fire extinguishers manufactured prior
to 1971
*Solid acid
*Chemical foam (excluding film-forming foam)
*Vaporizing liquid (e.g. carbon tetrachloride)
Are all examples of?

Answer 2

Obsolete Fire Extinguishers

Question 3

what are the General Requirements for the selection of fire extinguishers?

Answer 3

Type
Size
Hazard

Question 4

Class A Fires are?

Answer 4

Ordinary Combustible - wood, cloth, paper, rubber and plastics

Question 5

Flammable liquids, combustible liquids, petroleum greases, tars, oils, solvents, alcohols and flammable gasses are all examples of?

Answer 5

Class B Fires

Question 6

Class C Fires are?

Answer 6

Fires that involve energized electrical equipment

Question 7

Combustible metals, such as magnesium, titanium, sodium, lithium, and potassium are all examples of?

Answer 7

Class D Fires

Question 8

Cooking appliances that involve combustible cooking media (vegetable or animal oils and fats)

Answer 8

Class K Fires

Question 9

True or False?

Class C, Class D or Class K hazards shall not be required to have a number preceding the classification letter.

Answer 9

True

Question 10

Wheeled fire extinguishers shall be considered when

Answer 10

1. High hazard areas are present
2. Limited available personnel are present
   a. high agent flow
   b. increased agent stream range
   c. increased agent capacity

Question 11

Hazards where quantity and combustibility of Class A combustibles and Class B flammables are low and expected

Answer 11

Light Hazard (Low)

Question 12

Ordinary Hazard (Moderate)

Answer 12

Hazards where quantity and combustibility of Class A combustibles & Class B flammables are moderate rate of heat release are expected

Question 13

Hazards where quantity and combustibility of Class A combustible material are high or where high amounts of Class B flammables are present.

Answer 13

Extra Hazard (High)

Question 14

Hazards where Class B flammables expected to be present is more than 5 gal (18.9 L) in any room area or area

Answer 14

Extra Hazard (High)

Question 15

Hazards where Class B flammables typically expected to be present is from 1 gal to 5 gal (3.8 L to 18.9 L) in any room or area

Answer 15

Ordinary Hazard (Moderate)

Question 16

Required building protection shall be provided by fire extinguishers for?

Answer 16

Class A Fires

Question 17

______________ protection shall be provided by fire extinguishers for such Class A, B, C, D, or K fire potentials as might be present.

Answer 17

Occupancy hazard

Question 18

Extinguishers for Pressurized Flammable Liquids and Pressurized Gas Fires selection shall be made on the basis of recommendations by

Answer 18

Manufactures

Question 19

Large-capacity dry chemical extinguishers of 10 lb (4.54 kg) or greater and a discharge rate of 1 lb/sec (0.45 kg/sec) or more shall be used to protect these hazards.

Answer 19

Pressurized Flammable Liquids and Pressurized Gas Fires

Question 20

Aqueous film-forming foam (AFFF) and film-forming fluoro-protein foam (FFFP) shall not be used for the protection of water-soluble flammable liquids, such as alcohols, acetone, esters, ketones, and so forth unless specifically referenced on the

Answer 20

extinguisher nameplate

Question 21

Only water-type extinguishers shall be installed in areas containing oxidizers, such as

Answer 21

pool chemicals

Question 22

True or False

You can install multipurpose dry chemical fire extinguishers in areas containing oxidizers

Answer 22

False (Only water-type extinguishers)

Question 23

True or False

Class D fire extinguishers and agents shall be compatible with the specific metal for which protection is provided.

Answer 23

True