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6pack > Fire Fighting > Flashcards

Fire Fighting Flashcards

1
Q

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

A

operated continuously while vapors may be present

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2
Q

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

A

Sound the alarm

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3
Q

What is spontaneous combustion caused by?

A

chemical action within a substance

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4
Q

Spontaneous combustion is most likely to occur in?

A

rags soaked in linseed oil

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5
Q

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

A

removing the fuel

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6
Q

How is the spread of fire prevented?

A

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

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7
Q

The spread of fire is not prevented by:

A

removing smoke and toxic gases by ensuring adequate ventilation

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8
Q

To prevent spread of fire by conduction you should cool?

A

The bulkheads around the fire

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9
Q

Convection spreads fire by?

A

Heated gases flowing through the ventilation systems

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10
Q

To prevent spread of fire by convection you should?

A

Close all openings to the area

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11
Q

Radiation spreads fire by?

A

Transferring heat across an unobstructed space

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12
Q

How can fires be spread?

A

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

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13
Q

The best method of extinguishing a class A fire is?

A

cool the fuel below the ignition temperature

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14
Q

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

A

the adjoining horizontal and vertical surfaces before opening the galley door

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15
Q

The blanketing effect is essential on what class of fire?

A

B

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16
Q

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

A

secure the ventilation

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17
Q

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

A

B and C

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18
Q

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

A

electrocution or shock

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19
Q

How do foam extinguishers extinguish a fire?

A

By shutting off the air supply

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20
Q

What is a limitation of foam as an extinguishing agent?

A

It conducts electricity

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21
Q

Foam is effective on what class fires?

A

A and B

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22
Q

How do CO2 extinguishers extinguish fires?

A

smothering

23
Q

What are some characteristics of CO2

A

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

24
Q

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

A

It doesn’t leave a residue

25
Q

Compared to CO2 dry chem has greater or lesser range?

A

Greater

26
Q

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

A

Asphyxiation

27
Q

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

A

CO2

28
Q

How do dry chem extinguishers extinguish class B fires?

A

By breaking the chain reaction

29
Q

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

A

Not be used

30
Q

How does high velocity fog extinguish fire?

A

By absorbing heat and reducing the supply of oxygen

31
Q

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

A

sweeping the compartment with a fog stream

32
Q

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

A

Water fog or spray

33
Q

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

A

Low

34
Q

After extinguishing a fire with CO2 it is advisable to?

A

Stand by with water or other agents

35
Q

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

A

the base of the flames

36
Q

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

A

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

37
Q

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

A

closing the compartment

38
Q

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

A

At the source of the flame

39
Q

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

A

at the seat of the fire, starting near the edge

40
Q

What is the best method to apply foam?

A

Flow the foam down a nearby vertical surface

41
Q

A firehose must be connected to each hydrant except?

A

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

42
Q

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

A

the firehose

43
Q

What are firehose couplings made of?

A

Brass, bronze or soft alloy metals

44
Q

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

A

2

45
Q

Where would a fixed CO2 not be used?

A

crew quarters or spaces open to the atmosphere

46
Q

Hand portable and semi portable fire extinguishers are classified with?

A

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

47
Q

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

A

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

48
Q

What numerals on extinguishers indicate a portable extinguisher?

A

I, II, III

49
Q

What numerals on extinguishers indicate a semi portable extinguisher?

A

III, IV, V

50
Q

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

A

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

51
Q

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

A

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

52
Q

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

A

No

53
Q

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

A

Vessel length

54
Q

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

A

yes

6pack (17 decks)

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