OCTCO/OCTF - Oil and Chemical Tanker Cargo Operations Exit Exam Questions - Set 9

Question 1

The minimum oxygen required for combustion?

Accepted Answer

B: 16%

Answer

A: 5%

Answer

C: 8%

Answer

D: 21%

Question 2

What are consequences of a ballast tank vent not working during deballasting operation?

Accepted Answer

A: The tank de pressurization and denting of side plates.

Answer

B: The tanks taking in cargo vapors during loading operation.

Answer

C: The cargo tank alteration of ullage are taking place.

Answer

D: Combination of all three a,b,c

Question 3

Type 1 ship is a chemical tanker intended to transport chapter 17 of the IBC code product with very severe environmental and safety hazards which require maximum preventive measure to preclude an escape of such cargo.

Accepted Answer

D: Both(b)and(c)

Answer

A: False

Answer

B: True

Answer

C: High concentration of acid and organic compounds

Question 4

A vessel is fitted with a sample locker or spill containment locker in the amidships, what is the general arrangement for firefighting of that compartment.

Accepted Answer

D: Any one of (A)or (C) in addition to (B)

Answer

A: Foam applicator equipment.

Answer

B: Sprinkler system from the fire main

Answer

C: Portable extinguishers situated outside the compartment.

Question 5

The inert gas leaving the demister is saturated with?

Accepted Answer

D: 60%RH

Answer

A: 90%RH

Answer

B: 80%RH

Answer

C: 100%RH

Question 6

In IG the mass of the water vapor contained in a given volume of saturated gas depends on the.........of the gas?

Accepted Answer

A: temperature

Answer

B: color

Answer

C: volume

Answer

D: velocity

Question 7

Which of the following is a safety consideration when dealing with liquefied gas?

Accepted Answer

B: it's cold

Answer

A: its corrosive

Answer

C: it's cacogenic

Answer

D: its caustic

Question 8

Before entry into a cargo tank which has contained a petroleum product.........

Accepted Answer

D: the tank must be tested for a sufficient amount of oxygen

Answer

A: adjacent tanks must be empty

Answer

B: the tank must be filled with fresh water and emptied

Answer

C: static electricity must be measured

Question 9

The blower casing is of ...... material?

Accepted Answer

C: both a and b

Answer

A: highly water resistant

Answer

B: corrosion resistant

Answer

D: none of the above

Question 10

This valve is used in conjunction with closed and restricted measurement equipment to allow measurement in ship tanks that are closed to the atmosphere. Once a portable measurement unit (PMU) is attached to the VCV, the valve is opened and the PMU probe is dropped into the tank to perform the required measurement.

Accepted Answer

D: vapor control valve (VCV)

Answer

A: PMU point

Answer

B: measurement valve

Answer

C: Both (A) and (B)

Question 11

Which of the following describes a liquefied gas?

Accepted Answer

C: a substance that at normal temperature and pressure would be a gas

Answer

A: a liquid that needs to be stored at absolute zero to prevent it from becoming gaseous.

Answer

B: a gas that is mixed with another substance that causes it to liquefy

Answer

D: a liquid that is required to be heated above normal ambient temperature to make it from a gas

Question 12

As well as chemical what may chemical tankers also be used to transport.......

Accepted Answer

B: other liquid products

Answer

A: waste products

Answer

C: nuclear waste

Answer

D: bulk acids

Question 13

The IG blower ........introduced pressure fluctuations in inert gas demand.

Accepted Answer

A: must not

Answer

B: should

Answer

C: may or may not

Answer

D: none of the above

Question 14

Are all pumps and blowers shut down during the emergency shut down procedure of a shipboard inert gas system?

Accepted Answer

C: no, sea water cooling of deck seal running

Answer

A: no, the sea water pumps and the blowers are still running

Answer

B: no, the scrubber sea water pumps are still running

Answer

D: yes, all is shut down

Question 15

Heat released from fire 80% of heat is conducted through conduction?

Accepted Answer

A: true

Answer

B: false

Question 16

The draft reading at the middle of the ship markings, this draft can and often does, differ from the mean draft due to hogging or sagging?

Accepted Answer

C: midship draft

Answer

A: mean draft

Answer

B: moulded draft

Answer

D: none of the above

Question 17

Mast riser fire doesn't normally occur during?

Accepted Answer

B: discharging

Answer

A: purging

Answer

C: loading

Answer

D: purging inert gas pressure during normal passage

Question 18

What is the term for filling tanks with nitrogen, or similar liquid or gas to prevent cargo contact with the atmosphere?

Accepted Answer

B: padding

Answer

A: covering

Answer

C: blanketing

Answer

D: inerting

Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF) (Set 9)

The minimum oxygen required for combustion?

Questions in OCTCO/OCTF Set 9

Question Discussion & Notes

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