Chapter 5 (Selection of Portable Fire Extinguishers)

Question 1

what are the six criteria in determining the selection of a fire extinguisher?

Answer 1

(1) type of fire most likely to occur
(2) size of fire most likely to occur
(3) Hazards in the area where the fire is most likely to occur
(4) Energized electrical equipment in the vicinity of the fire
(5) ambient temperature conditions
(6) other factors as stated in section h.2.

Question 2

Portable fire extinguishers shall be installed as a first line of defense to cope with?

Answer 2

Fires of a limited size

Question 3

If a building is equipped with automatic sprinklers, standpipe and hose, or other fixed protection equipment, does that have an impact on the selection of the fire extinguishers?

Answer 3

No the selection of the extinguishers shall be independent of that.

Question 4

what is a class A Fire?

Answer 4

Fires are in ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics.

Question 5

what is a class B fire?

Answer 5

fires in flammable liquids, combustible liquids, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases.

Question 6

what is a class C fire?

Answer 6

fires that involve energized electrical equipment.

Question 7

what is a class D fire?

Answer 7

fires in combustible metals, such as magnesium, titanium, zirconium, sodium, lithium, and potassium.

Question 8

What is a class K fire?

Answer 8

fires in cooking appliances that involve combustible cooking media. (vegetable or animal oils and fats)

Question 9

The classification of fire extinguishers shall consist of _________ that indicates the class of fire on which the fire extinguisher has been _________

Answer 9

(1) A letter

(2) found to be effective

Question 10

Fire Extinguishers that are classified for A and B fires additionally need to have _______ proceeding the classification letter which indicates the ________.

Answer 10

(1) A rating number

(2) relative extinguishing effectiveness

Question 11

Do class c,d, or k type extinguishers need a rating number?

Answer 11

No

Question 12

Use of Halon agent fire extinguishers shall be limited to what applications?

Answer 12

(1) Where a clean agent is necessary to extinguish fire efficiently without damaging the equipment or area being protected.
(2) where the use of alternative agents has the potential to cause a hazard to personnel in the area.

Question 13

Placement of portable fire extinguishers containing halogenated agents shall conform to?

Answer 13

minimum confined space volume requirement warnings contained on the fire extinguisher nameplates.

Question 14

When should a wheeled fire extinguisher be considered?

Answer 14

(1) High hazard areas are present.
(2) Limited available personnel are present, thereby requiring an extinguisher that has the following features:
(a) High Agent flow rate
(b) Increased agent stream range
(c) Increased agent capacity

Question 15

What are the three classifications that can be given to a room?

Answer 15

(1) Light Hazard
(2) Ordinary Hazard
(3) Extra Hazard

Question 16

What classifies a room as a light hazard?

Answer 16

(1) low rates of heat release are expected
(2) Normally expected quantities of class A combustible furnishings.
(3) the total quantity of class b flammables typically expected to be present is less the 1 gal in any room or area.

Question 17

What classifies a room as ordinary hazard?

Answer 17

(1) Moderate rates of heat release are expected.
(2) class A combustible materials beyond normally anticipated furnishings.
(3) the total quantity of class b flammables typically expected to be present is from 1 Gal to 5 Gal in any room or area.

Question 18

What classifies a room as extra hazard?

Answer 18

(1) high rates of heat release are expected
(2) occupancies consist of fire hazards involved with the storage, packaging, handling, or manufacture of class A combustibles.
(3) the total quantity of class B flammables expected to be present is more the 5 Gal in any room or area.

Question 19

Required building protection shall be provided by what type of extinguishers?

Answer 19

Class A

Question 20

Are fire extinguishers provided for building protection permitted to also be considered for the protection of occupancies?

Answer 20

Yes, they may be considered for the protection of occupancies having a class A fire potential.

Question 21

Buildings having an occupancy hazard subject to class B and class C fires, or both shall have?

Answer 21

(1) A standard complement of class A fire extinguishers for building protection.
(2) Plus additional Class B or Class C fire extinguishers, or both.

Question 22

Are fire extinguishers with more than one letter classification (such as 2-A: 20-B: C) permitted to satisfy the requirements of each letter class?

Answer 22

Yes, they shall be permitted to satisfy the requirements of each letter class.

Question 23

What criteria does a class B fire extinguisher need for Pressurized flammable liquids and pressurized gas fires?

Answer 23

(1) Large-capacity dry chemical extinguishers of 10 LB or greater.
(2) discharge rate of 1 LB/sec or more

Question 24

What criteria does a fire extinguisher need for three dimenional fires?

Answer 24

(1) Large-capacity dry chemical extinguishers of 10 LB or greater.
(2) discharge rate of 1 LB/sec or more

Question 25

Obstacle fires. selection of a fire extinguisher for this type of hazard shall be based on one of the following

Answer 25

(1) extinguisher containing a vapor-suppressing foam agent.
(2) Multiple extinguishers containing non-vapor-suppressing class B agents intended for simultaneous application.
(3) Large Capacity extinguishers of 10 LB or greater and a minimum discharge rate of 1 LB/sec.

Question 26

what type of extinguishers shall not be used on water-soluble flammable liquid fires?

Answer 26

AFFF and FFFP extinguishers

Question 27

Class K fire extinguishers manufactured after January 1, 2002, shall not be equipped with what?

Answer 27

extended wand-type discharge devices

Question 28

what type of extinguisher shall not be used on electronic equipment?

Answer 28

dry chemical fire extinguishers

Question 29

What type of extinguishers are needed for areas where pool chemicals containing chlorine or bromine are stored?

Answer 29

Only water or foam extinguishers