Fire Fighting

Question 1

When flammable liquids are handled in a compartment, the ventilation for the area should be?

Answer 1

operated continuously while vapors may be present

Question 2

What is the first action you take if you discover a fire aboard a ship?

Answer 2

Sound the alarm

Question 3

What is spontaneous combustion caused by?

Answer 3

chemical action within a substance

Question 4

Spontaneous combustion is most likely to occur in?

Answer 4

rags soaked in linseed oil

Question 5

Except in rare cases, it is impossible to extinguish a shipboard fire by?

Answer 5

removing the fuel

Question 6

How is the spread of fire prevented?

Answer 6

Cooling surfaces adjacent to the fire, removing combustibles from the endangered area, shutting off the oxygen supply

Question 7

The spread of fire is not prevented by:

Answer 7

removing smoke and toxic gases by ensuring adequate ventilation

Question 8

To prevent spread of fire by conduction you should cool?

Answer 8

The bulkheads around the fire

Question 9

Convection spreads fire by?

Answer 9

Heated gases flowing through the ventilation systems

Question 10

To prevent spread of fire by convection you should?

Answer 10

Close all openings to the area

Question 11

Radiation spreads fire by?

Answer 11

Transferring heat across an unobstructed space

Question 12

How can fires be spread?

Answer 12

Conduction of heat to adjacent surfaces, direct radiation, or convection

Question 13

The best method of extinguishing a class A fire is?

Answer 13

cool the fuel below the ignition temperature

Question 14

A large fire, involving class A material has developed in the ships galley. In combating the fire you should cool:

Answer 14

the adjoining horizontal and vertical surfaces before opening the galley door

Question 15

The blanketing effect is essential on what class of fire?

Answer 15

B

Question 16

If heavy smoke is coming from the paint locker, the first firefighting response should be to:

Answer 16

secure the ventilation

Question 17

Fires that would most likely occur in the engine room would be what class?

Answer 17

B and C

Question 18

The primary hazard other than fire damage associated with class C fires?

Answer 18

electrocution or shock

Question 19

How do foam extinguishers extinguish a fire?

Answer 19

By shutting off the air supply

Question 20

What is a limitation of foam as an extinguishing agent?

Answer 20

It conducts electricity

Question 21

Foam is effective on what class fires?

Answer 21

A and B

Question 22

How do CO2 extinguishers extinguish fires?

Answer 22

smothering

Question 23

What are some characteristics of CO2

Answer 23

heavier than air, non-conductive and is used on class B and C fires

Question 24

Why is CO2 better than dry chem at fighting a class C fire?

Answer 24

It doesn’t leave a residue

Question 25

Compared to CO2 dry chem has greater or lesser range?

Answer 25

Greater

Question 26

What is the danger associated with using CO2 in an enclosed space?

Answer 26

Asphyxiation

Question 27

What is the extinguishing agent most likely to allow a re-flash as a result of not cooling the fire below its ignition temperature?

Answer 27

CO2

Question 28

How do dry chem extinguishers extinguish class B fires?

Answer 28

By breaking the chain reaction

Question 29

When fighting an oil or gasoline fire in the bilge, a solid stream water nozzle should?

Answer 29

Not be used

Question 30

How does high velocity fog extinguish fire?

Answer 30

By absorbing heat and reducing the supply of oxygen

Question 31

What is the best method for applying water when attempting to enter a compartment on fire?

Answer 31

sweeping the compartment with a fog stream

Question 32

What will cool down a heated bulkhead in the least amount of time?

Answer 32

Water fog or spray

Question 33

Which has less range, high velocity fog or low velocity fog?

Answer 33

Low

Question 34

After extinguishing a fire with CO2 it is advisable to?

Answer 34

Stand by with water or other agents

Question 35

Where should the discharge of a CO2 extinguisher be directed at?

Answer 35

the base of the flames

Question 36

What must you do before using a CO2 extinguisher to fight an engine room fire?

Answer 36

Secure the engine room ventilation, secure the machinery in the engine room and evacuate all engine room personal

Question 37

Fire in an engine compartment is best extinguished with CO2 and by?

Answer 37

closing the compartment

Question 38

Where should the stream of dry chem be directed when electrical equipment is involved in fire?

Answer 38

At the source of the flame

Question 39

When fighting a class B fire with dry chem where should the discharge be directed?

Answer 39

at the seat of the fire, starting near the edge

Question 40

What is the best method to apply foam?

Answer 40

Flow the foam down a nearby vertical surface

Question 41

A firehose must be connected to each hydrant except?

Answer 41

when exposed to heavy weather or when the firehose might be damaged by cargo operations

Question 42

What is the most vulnerable part of the fire main system?

Answer 42

the firehose

Question 43

What are firehose couplings made of?

Answer 43

Brass, bronze or soft alloy metals

Question 44

The min. number of people required to safely handle a 2 1/2 inch firehose is?

Answer 44

2

Question 45

Where would a fixed CO2 not be used?

Answer 45

crew quarters or spaces open to the atmosphere

Question 46

Hand portable and semi portable fire extinguishers are classified with?

Answer 46

A letter indicating the type of fire the unit is expected to extinguish and a Roman numeral that indicates the size of the unit

Question 47

How do the Roman numeral labeling system for fire extinguishers work?

Answer 47

I is the smallest, ends with V which is the largest

Question 48

What numerals on extinguishers indicate a portable extinguisher?

Answer 48

I, II, III

Question 49

What numerals on extinguishers indicate a semi portable extinguisher?

Answer 49

III, IV, V

Question 50

How heavy must an extinguisher be to be considered semi-portable

Answer 50

55lbs or greater, they must be fitted with a suitable length of hose and nozzle that can reach all parts of the space they are suppose to protect

Question 51

A metallic nameplate is required to be attached to all hand held portable extinguishers, it lists?

Answer 51

the identity mark of the manufacture, the name of the item, and the rated capacity in gallons, quarts or pounds

Question 52

Is the hydrostatic test date listed on the metallic nameplate of an extinguisher?

Answer 52

No

Question 53

What are the number of required extinguishers per vessel based on?

Answer 53

Vessel length

Question 54

When dry chem extinguishes as class B fire is there a danger of reflash?

Answer 54

yes