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Tankerman > Q456: Tankship Dangerous Liquids > Flashcards

Q456: Tankship Dangerous Liquids Flashcards

1
Q

In reference to accidental oil pollution, the most critical time during bunkering is when __________.

A

final topping off is occurring

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2
Q

Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern.
Which of the following actions would reduce the excessive trim?

A

shift bunkers forward

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3
Q

Where would be the most likely location for a liquid cargo fire to occur on a tanker?

A

in the pumproom

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4
Q

What is litmus paste is used to determine?

A

thievage

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5
Q

What causes the most frequent incidents of pollution during tanker operations?

A

loading and discharging

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6
Q

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

A

10 percent

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7
Q

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

A

ullage

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8
Q

Which of the following would be classified as grade “C” petroleum product?

A

Reid vapor pressure of 5 psia, flash point of 70°F.

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9
Q

Which statement about the use of portable electric lights in petroleum product tanks is TRUE?

A

They must be explosion-proof, self-contained, battery-fed lamps.

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10
Q

Which of the following choices does not depict the tank inerting process on a tank vessel?

A

the introduction of oxygen into a gas free tank prior to entry

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11
Q

It would be prudent to perform which of the following actions prior to the commencement of
bunkering?

A

plug the scuppers

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12
Q

What are the flammable limits for motor gasoline?

A

1.4% to 7.6% mixture in air

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13
Q

The condition of asphyxia arises from which of the following?

A

an inadequate supply of oxygen

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14
Q

U.S. regulations state that a person may not transfer oil or hazardous materials to or from a vessel unless each person in charge has signed which of the following documents?

A

Declaration of Inspection

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15
Q

Who must supervise functions aboard a tanker or tank barge such as connecting, disconnecting, and
topping off?

A

the person designated as “person in charge”

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16
Q

Which statement is TRUE concerning combustible gas indicators?

A

They do not work properly where there is a lack of oxygen.

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17
Q

When is it acceptable to use power-driven or manually-operated spark producing devices in the pumproom, where grades A, B, C, and D liquid cargoes are involved?

A

when the compartment itself is gas free

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18
Q

Under which of the following conditions will the blowers of an inert gas generation system aboard a tanker remain operational?

A

The tank atmosphere above 8% oxygen

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19
Q

Your vessel is taking on cargo oil when a small leak develops in the hose. You order the pumping
stopped. Before you resume pumping, which of the following action should you perform?

A

replace the hose

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20
Q

When providing first aid to a victim of gas poisoning, what is the MOST important symptom to check for?

A

suspension of breathing

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21
Q

When loading a tanker, you should perform which of the following functions to ensure a safe operation?

A

close valves by closing them down, re-opening one or two turns, and re-closing

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%

23
Q

When stripping a tank, what is caused by excessive air in the suction line?

A

loss of suction

24
Q

Protective clothing must be worn while sampling hazardous cargo on a tankship. This clothing includes which of the following at a minimum?

A

a face mask or goggles

25
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.

26
Q

Which of the following describes the flash point temperature of a liquid?

A

at which a liquid will give off inflammable vapors

27
Q

What are flame screens used for?

A

prevent flames from entering tanks

28
Q

In special cases, the Commandant of the Coast Guard may permit cargo piping to pass through machinery spaces. This is permitted provided that the only cargo carried through such piping is(are) which of the following?

A

grade E

29
Q

What is a cofferdam?

A

Void or empty space separating two tanks

30
Q

What is the standard net barrel for petroleum products?

A

42 gallons at 60°Fahrenheit

31
Q

What is the primary function of a flame screen on a tank vessel?

A

permits the passage of vapor but not of flame

32
Q

According to U.S. regulations, which conditions would not disqualify a nonmetallic hose as being suitable for use in transferring oil?

A

A leak in the flange gasket while hydrostatically testing the hose.

33
Q

Which of the following conditions will result in an automatic shut down of the flue gas inert gas system?

A

High temperature gas discharge from inert gas blowers.

34
Q

For all loading operations, the terminal must supply the vessel with a means in which the vessel’s designated person in charge may stop the flow of oil to the vessel, insuring immediate shutdown in
the event of a hose rupture, tank overflow, etc. Which of the following choices will accomplish this task as required by 33 CFR?

A

a pneumatically or mechanically operated device

35
Q

Which statement is TRUE concerning insulating flanges?

A

They should be inspected and tested periodically to ensure that the insulation is clean and in good condition.

36
Q

The person in charge on the vessel and the person in charge at the facility must hold a meeting before starting the transfer of oil. Who must decide to start the transfer?

A

Both persons in charge

37
Q

Which of the following describes the depth of a product in a tank?

A

Innage

38
Q

Your vessel is taking on cargo oil when a small leak develops in the hose. You order the pumping stopped. What action should you take before you resume pumping?

A

replace the hose

39
Q

While loading bulk oil, you notice oil on the water near the barge. Which of the following actions should you carry out FIRST?

A

Stop loading

40
Q

What would likely happen if you were exposed to a 100% methane atmosphere for more than 15 minutes?

A

suffocate

41
Q

What is the lowest temperature at which the vapors of a flammable liquid will ignite and cause self sustained combustion in the presence of a spark or flame?

A

fire point

42
Q

Which of the following describes intrinsically safe equipment?

A

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

43
Q

What is the maximum allowable oxygen content within the ships cargo tanks, inert gas piping and the vapor recovery system?

A

8%

44
Q

Which of the following is an example of a example of a grade D product?

A

kerosene

45
Q

According to U.S. regulations, which of the following conditions would disqualify a nonmetallic hose as being suitable for use in transferring oil?

A

Evidence of internal or external deterioration.

46
Q

Which of the following does not require cargo transfer operations on a tank vessel to be stopped?

A

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

47
Q

According to U.S. regulations, no person may connect or disconnect an oil transfer hose or engage in any other critical oil transfer operation on a tank vessel unless which of the following is met?

A

the designated person in charge supervises that procedure

48
Q

What does the MARPOL 73/78 convention deal with?

A

International Convention for the Prevention of Pollution from Ships

49
Q

On tankers using manually operated tank valves, what does the deck hand wheel indicator register?

A

approximate number of turns the tank valve has been opened

50
Q

If a cargo of kerosene were considered “too lean” to explode, then it must be which of the following?

A

below the “explosive range”

Tankerman (4 decks)

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