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Flashcards in Exam 4 Deck (84):
1

What is the best way to deal with a fire on board a ship?

By preventing them

2

How do most fires occur?

Human error and or poor housekeeping

3

What does SOLAS chapter 11–2 address?

Fire protection, fire detection, fire extinguishing

4

What CFR addresses fire prevention and response?

CFR 46

5

What are the three necessary elements of a fire?

Oxygen heat and fuel

6

the fire tetrahedron represent the addition of what other component?

The exothermic chain reaction

7

The lowest temperature at a given liquid will ignite is the

Flashpoint

8

The lowest temperature which a given liquid will continue to burn is the

Ignition temperature/fire point

9

The lowest temperature which the fuel will spontaneously ignite is the

Combustion temperature/auto ignition point

10

What class fire is wood paper or cloth trash and other ordinary materials?

A

11

Gasoline oil paint in other flammable liquids is a class

B

12

Combustible metals and combustible metal alloys are what class of fire?

D

13

Cooking media (vegetable or animal oils and fats)

Class K

14

What type of fire require special suppression techniques?

D

15

A water fire extinguisher is used for

Class a fire only

16

A foam fire extinguisher is used for

Class a and B fires only

17

CO2 fire extinguishers are used for

Class B and C fires only

18

A dry chem fire extinguisher is used for

Class a B and C fires

19

Inhibiting the chemical chain reaction, such as water mist, dry chemical, or Halon

Class B

20

Conductive agents like water should not be used on

Class C

21

Suppression by removing oxygen or water

Class K

22

What does water due to a fire?

Absorbs latent heat – removes large quantity of heat

23

What are some ways to remove heat from a fire?

Water, foam, missed, NOVEC&FM 200

24

What are some ways to remove oxygen from a fire?

CO2, foam, close the space

25

What system is replacing Halon

NOVEC & FM 200

26

What is a way to remove flammable liquid from a fire?

By closing a valve that’s supplying the flammable liquid

27

What type of fire extinguisher is good protection against reflash?

Dry chemical

28

What type of fire extinguisher does not offer good protection against reflash?

CO2

29

What is the most versatile, easiest, and readily available source of fire protection?

Water

30

American fire hoses are typically

2 1/2” & 1 1/2”

31

100psi ~

100ft stream

32

35 cubic feet of water =

1 ton

33

Sprinkler systems are commonly found on

Passenger ships & Ro/Ro

34

A 2 1/2” hose with 120 psi~ ~
=~

800gpm
110 cubic ft
3 tons/minute

35

How did the S. S. Normandie capsize?

Excessive firefighting water pumped on board

36

An eductor utilizes

Venturi principle

37

Co2 can be

Hand held
Semi portable
Fixed systems

38

A fixed co2 system requires

Closed protected compartments, and releases calculated required quantity to extinguish the flames

39

What are some advantages to CO2 systems?

No consequential damage, it’s transported through long distances their pipelines, and it’s a relatively low-cost material

40

What are some disadvantages to CO2 systems?

High risk to personnel, large quantity of gas needed, cylinders have to be stored in an isolated space, many safety devices needed, and the action is not repeatable

41

What system is an alternative to CO2?

NOVEC

42

NOVEC advantages

Less environmental impact, less harmful to personnel, no special room, no residue, not stored under pressure, easier to handle, more effective on volume basis

43

NOVEC disadvantages

Hi refill cost, toxic gas my form due to fire in engine room

44

Class K fires are a

Subclass of class B fires.

45

Class K flames can be extinguished by

Wet chemical or dry chemical

46

Galley fire suppression systems typically have a

Remote actuating station

47

An exceptionally efficient fire safety technology, that uses significantly less water than traditional sprinkler systems while achieving a similar or better level of performance while minimizing fire and water damage is called a

Hi velocity fog

48

What occurs by self heating do to exothermic internal reactions followed by thermal runaway?

Spontaneous combustion

49

Name the three basic types of fire sensors.

Smoke detectors, heat detectors, flame detectors

50

Smoke detectors utilize

Optical and ionization

51

Heat detectors utilize

Rate of rise and fixed temperature

52

Flame detectors utilize

Ultraviolet, infrared, thermal imaging camera

53

What also makes a good fire detector?

Humans

54

What are the essential components of a fire detection system?

Sensors, central control, alarms, possible tie in with extinguishment

55

What is constructed to control the spread of fires on a ship?

Fire control bulkheads

56

Fire control bulkheads are spaced and arranged to create what?

Fire zones

57

Fire control bulkheads are classified as

A, B, C, depending on the ability to limit the spread of flame and smoke

58

Class a bulkheads are capable of preventing the passage of smoke and flame for how long?

One hour

59

Class B bulkheads are capable of preventing the passage of flame for

1/2 hour

60

How many firefighting protection outfits must be on a cargo ship and likewise how many on a tanker ship

Two on a cargo ship minimum of four on a tanker

61

What must a fire control station have?

The display of fire alarm system, cabinet containing the quick closing valve control, stop buttons for mechanical ventilation, smoke extraction cabinet, remote control cabinet for CO2 system, remote operation of fire screen doors, fireman outfit, SCBA

62

When must a muster list be posted?

Before the vessel begins voyage

63

Where must the muster list be posted?

Conspicuous places throughout the basil, the bridge, engine room, accommodation spaces

64

What is a main cause of spontaneous combustion?

Oily rags and poor ventilation

65

A vessel floats because

The gravitational force pulling it downward is offset by the upward buoyant force, hence a state of equilibrium

66

Archimedes principle states that the upward buoyant force that is exerted on a body immersed in a fluid =

The weight of the fluid that the body displaces

67

The buoyant force acts in the upward direction at the

Center of mass of the displaced fluid

68

The weight of the displaced volume of fluid will

Equal the weight of the floating body

69

As long as the value of G is offset by the value of B,

The vessel will remain a float

70

The locations in relative positions of B and G are crucial in maintaining

Upright flotation

71

The center of buoyancy is located

At the center of the immersed portion of the hull

72

The center of gravity is the point at which

The sum of the vertically acting downward force of gravity can be considered to act

73

The overall gravitational force acts through

The center of gravity

74

The ability of a vessel to float upright and return to an upright position when any upsetting force is no longer present is known as

Stability

75

When the center of gravity and the center of buoyancy are vertically aligned initially this is known as

Initial stability

76

When An upsetting force is introduced such as wind or waves

G remains in position, but B shift to the new center of the immersed hull

77

When G and B are vertically offset, what is then created?

The righting moment

78

The point where the B vector crosses the transverse center line is called the

Metacenter

79

B always acts vertically through the

Metacenter

80

The greater the distance between G and M, the greater the

Initial stability

81

The distance between the center of gravity and the metacenter is the

Metacentric height

82

A stiff ship, short rolling period, and cranky are all characteristics of a

Large GM value

83

Tender ship and long rolling period are characteristics of a

Small GM value

84

When a vessel is upright,

K, B, G, & M are all aligned on the centerline