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License Seminar > Auxiliary Equipment 2 > Flashcards

Auxiliary Equipment 2 Flashcards

1
Q

Methane gas is __________ .

A

odorless

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2
Q

The valve on the discharge side of a cargo pump on a tank vessel will usually be a __________.

A

check valve

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3
Q

A combustible liquid is defined as any liquid having a flash point above what temperature?

A

80*F

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4
Q

Cargo transfer operations on a tank vessel need NOT be stopped when ___________________ .

A

a tug comes alongside while the tanker is loading grade D and E cargoes

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5
Q

The emergency shutdown requirements of Pollution Prevention Regulations (33 CFR Part 155) apply to __________.

A

cargo transfer systems

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6
Q

Each pressure gage used in an oil transfer operation must be accurate to within what percent?

A

10%

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7
Q

When you notice oil on the water near your vessel while taking on fuel, what should your first action be?

A

stop loading

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8
Q

Which is NOT a safety precaution to be observed during the loading of LFG?

A

Make sure the rake ends of the barge are completely dry and mopped.

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9
Q

Which statement is TRUE of centrifugal pumps aboard tank vessels?

A

They are gravity-fed.

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10
Q 
Which would be considered pollution under the U.S. water pollution laws?
A	Oil
B	Hazardous substances
C	Garbage
D	All of the above
A

D All of the above

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11
Q

An enclosure which will withstand ignition of a flammable gas and which will prevent the transmission of any flame able to ignite a flammable gas which may be present in the surrounding atmosphere is called __________ .

A

explosion proof

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12
Q

Who completes the Declaration of Inspection before loading a tank vessel?

A

The designated person in charge

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13
Q

A tank which carries liquid is dangerous to the stability of a vessel when it is in what state?

A

slack

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14
Q

A cargo pump relief valve is piped to the __________ .

A

suction side of pump

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15
Q

Litmus paste is used in order to determine __________ .

A

thievage

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16
Q

Which step is NOT generally taken when gas-freeing a tank?

A

Application of degreasing solvents

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17
Q

You start a centrifugal cargo pump to discharge cargo. The pump works fine for awhile and then loses suction. What could have caused this?

A

incomplete priming

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18
Q

Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. To adjust the trim you may __________.

A

shift bunkers forward

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19
Q

In order to reduce the accumulation of static electricity while loading petroleum products, you should __________.

A

start to load slowly

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20
Q

What is the proper first aid for LPG in the eye?

A

Flush the eye with plenty of water.

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21
Q

Intrinsically safe equipment can be described as __________.

A

an electrical circuit in which a spark is incapable of causing the ignition of a given explosive mixture

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22
Q

If a repair team is to enter a confined space for repair work, what minimum level of oxygen should be present?

A

21%

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23
Q

Oil may NOT be transferred unless ____________________ .

A

discharge containment equipment (i.e. drip pans) are in place

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24
Q

When two ballast pumps used for deballasting a single tank start cavitating, you should __________.

A

shut down one pump

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25
Q

According to the Pollution Prevention Regulations (33 CFR), the person-in-charge of transfer operations, both ashore and on the vessel, must agree on __________ .

A

the identity of the product to be transferred

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26
Q

Who will certify the vessel to be gas free before entering the shipyard?

A

A shoreside gas chemist.

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27
Q

The term “oil”, as used in the Pollution Prevention Regulations (33 CFR), means __________.

A

petroleum oil of any kind

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28
Q

A chemical additive to LPG gives it a characteristic __________.

A

odor

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29
Q

Prior to transfer of fuel, the Declaration of Inspection required by Coast Guard Regulation (33 CFR) __________ .

A

must be signed by both the person-in- charge of the pumping and the person-in- charge of receiving

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30
Q 
In order for combustion to occur inside a piping system such as a vapor collection header in a marine emission control system, there must be \_\_\_\_\_\_\_\_\_\_.
A	ignition
B	oxygen
C	fuel
D	All of the above
A

D All of the above

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31
Q

What is a characteristic of all centrifugal cargo pumps?

A

Decreasing the speed of rotation will decrease the discharge pressure.

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32
Q

A vessel loads edible oil in a deep tank through a manhole at the mid-length of the tank. In order to fill the tank to maximum capacity, what trim should the vessel have?

A

In level trim

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33
Q

Pollution Prevention Regulations (33 CFR Part 156), state that no person may transfer oil to or from a vessel unless __________.

A

all parts of the transfer system have been properly lined up

34
Q

The standard unit of liquid volume used in the petroleum industry, as well as the tanker industry, is a ____________________.

A

barrel

35
Q

A fire of escaping liquefied flammable gas is best extinguished by __________.

A

stopping the flow of gas

36
Q

What is meant by “thieving” a petroleum cargo?

A

Determining the amount of water (if any) in each cargo tank

37
Q

What is the purpose of the relief valve of a cargo pump?

A

Permits the return of cargo to the suction side of the pump

38
Q

What is NOT an advantage of centrifugal pumps over reciprocating pumps?

A

They require priming for stripping.

39
Q

Flame screens are used to ____________________ .

A

prevent flames from entering tanks

40
Q

Which topic is NOT required to be discussed at the pre-transfer conference?

A

Estimated time of finishing cargo

41
Q

Which of the following is the pipe used to connect two separate piping systems on a tank vessel?

A

crossover

42
Q

What is the distance between the surface of the liquid and the tank top in a cargo tank called?

A

ullage

43
Q

What is a cofferdam?

A

Void or empty space separating two tanks

44
Q

When loading bulk liquid cargo, what is the first action you should take if a cargo valve jammed open?

A

Order the dock man to shut down.

45
Q

Heavy fuel oils when spilled are __________.

A

less harmful to sea life than lighter oils

46
Q

The minimum temperature required to ignite gas or vapor without a spark or flame being present is called __________.

A

auto ignition temperature

47
Q

According to Pollution Prevention Regulations (33 CFR), no person may transfer oil to or from a vessel unless __________.
A each hose is supported in a manner that prevents strain on its coupling
B each part of the transfer system necessary to allow the flow of oil is lined up for transfer
C each oil transfer hose has no loose covers, kinks, bulges, or soft spots, and no gouges, cuts or slashes that penetrate the hose reinforcement
D All of the above.

A

D All of the above.

48
Q

Which refers to the depth of a petroleum product in a tank?

A

Innage

49
Q

Air compressors are NOT permitted in which space(s) on a tank barge carrying grade A cargo?
A A space in which cargo hose is stored
B A cargo handling room
C An enclosed space containing cargo piping
D All of the above

A

D All of the above

50
Q

A standard net barrel of petroleum products is ____________________.

A

42 gallons at 60*F

51
Q

Which of the following problems will occur if a manually cleaned disk-type centrifugal lube oil purifier contains insufficient sealing water prior to admitting oil flow to the bowl?

A

Lube oil will discharge from the heavy phase discharge port to the sludge tank.

52
Q

The most frequent incidents of tanker pollution occurring during tanker operations is __________ .

A

loading and discharging

53
Q

Remote controls for quick-closing shut off valves are required in how many location(s)?

A

2

54
Q

To serve as the person in charge of oil cargo transfer operations onboard a self-propelled tank vessel, an individual must __________ .

A

be a certified tankerman (PIC)

55
Q

The most likely location for a liquid cargo fire to occur on a tanker would be __________.

A

in the pump room

56
Q

A ‘P-tank’ as used aboard oilfield supply boats is __________.

A

a pneumatically operated tank used to transfer dry, pulverized drilling materials

57
Q

People familiar with ammonia refrigeration systems become accustomed to its odor and may forget that the vapors have which of the following properties?
A in a low concentration can cause death
B will dissolve in perspiration and cause caustic burns
C will burn or explode
D all of the above

A

D all of the above

58
Q

Water hammer in a steam heating system can be caused by __________.

A

steam admitted to a cold pipe

59
Q

Which of the following is the chief source of spontaneous combustion aboard tankers?

A

oil soaked rags or rubbish

60
Q

A refrigeration compressor used in a multi-box refrigeration system is designed with six of its eight cylinders able to be controlled for variable load conditions. If all of the reefer boxes are currently feeding, what percentage of the total number of compressor cylinders will be loaded after start up?

A

100%

61
Q

In a shipboard potable water system, which of the following symptoms would indicate that the hot water circulating pump had failed?

A

Below normal water temperature would be discharged for a long period before hot water would appear at the hot water faucets.

62
Q 
Which of the following will speed up the recovery process when performing maintenance on a refrigeration system?
A	chilling the recovery vessel
B	heating the appliance
C	both A and B
D	neither A and B
A

C both A and B

63
Q

A short, weighted hose is attached to the end of the P-tank fixed discharge line on board a supply boat to __________ .

A

keep the end of the hose under water and prevent dust from blowing on the boat

64
Q

What is the short term replacement for R-11 refrigerant, as used in low pressure centrifugal chillers?

A

R-123

65
Q

Supply air pressure to an oilfield supply boat ‘P-tank’ system should generally not be above __________ .

A

50 psi

66
Q

A liquid indicator sight glass is useful in determining whether or not a refrigeration system is sufficiently charged. Where is it generally located in the system?

A

high-pressure liquid line

67
Q

When checking zinc plates, or pencil Zincs in the refrigerating system condenser, what should you do?

A

replace the zincs if deteriorated by 50%

68
Q

A refrigeration plant has been prepared for opening up the system for non-major repairs by performing a system pumpdown and bringing the part of the system to be opened to 0 psig. At the completion of the repairs and after re- closing the system what is the recommended procedure?

A

performing a dehydration evacuation on that part of the system which was open with a deep vacuum pump

69
Q

The recovery of refrigerant from refrigerant absorbed in oil can be maximized by what practice?

A

heating the oil

70
Q

Prior to making non-major repairs (such as replacing a main liquid line dehydrator dessicant cartridge) of a large, multi- box refrigeration system, what should be done before opening the system?

A

Pump down the low side and liquid line to 0 psig by closing the king valve, then isolate the dehydrator

71
Q

What is the maximum steam pressure allowed by Coast Guard Regulations (46 CFR) to be provided in the steam heating system of the living spaces?

A

45 psig

72
Q

An arrow stamped on the valve body of a water regulating valve indicates which of the following?

A

direction of the flow

73
Q

The “tare weight” of a refrigerant storage cylinder refers to what weight?

A

the weight of an empty cylinder

74
Q

Properties of a good refrigeration compressor lubricating oil include which of the following?

A

low wax content

75
Q

Seawater or low temperature central fresh water is typically provided to a ship’s stores refrigeration plant for what purpose?

A

condense the refrigerant gas

76
Q

Cylindrical, replaceable silica gel core dehydrators installed in halocarbon refrigerant systems are typically arranged in what way?

A

so that the liquid enters at the bottom and leaves at the top when located vertically in the liquid line

77
Q

Hard drawn copper tubing is used in commercial refrigeration systems rather than steel for what reason?

A

copper is corrosion resistant and easier to work with than steel

78
Q

Sludge may form in the lubricating oil crankcase of a reciprocating air conditioning compressor as a result of what condition?

A

contamination by dust, scale, or moisture

79
Q

A common secondary refrigerant used in air conditioning systems aboard ship is what substance?

A

water

80
Q 
Which of the following terms represents the form of heat removed from the refrigerant in the condenser of a refrigeration system?
A	Latent heat of vaporization
B	Heat of compression
C	Superheat
D	All of the above
A

D All of the above

License Seminar (7 decks)

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