GASCO - Advanced Training for Liquefied Gas Tanker Cargo Operations Exit Exam Questions - Set 11

Question 1

When using the breathing apparatus, the person is warned of low air volume remaining in his air bottle by the meter needle in the red zone and

Accepted Answer

A: a whistle sounding off

Answer

B: a slight difficulty in breathing

Answer

C: the life line being tug 3 times by the outside controller

Answer

D: his own judgement of his bottle becoming colder upon emptying

Question 2

Hazardous conditions exist which may result in spontaneous combustion when

Accepted Answer

A: oil soaked rags are stowed in the machine shop

Answer

B: powdered aluminum is stowed dry

Answer

C: dry metal turnings accumulat

Question 3

The best portable fire extinguisher to be used to fight tank top fire in the engine-room is the:

Accepted Answer

A: foam typ

Answer

B: water typ

Answer

C: dry powder typ

Question 4

Fire fighters can control the LNG fire by using______________.

Accepted Answer

C: high expansion foam

Answer

A: water

Answer

B: water mixed with oil

Question 5

How should steam pipes be protected in machinery spaces?

Accepted Answer

C: They should be lagged

Answer

A: They should be painted in different colours

Answer

B: They should have placards to warn personnel

Question 6

What is the parameter which influences the separation of nitrogen in a membrane type generator, which uses hollow fiber membranes to produce nitrogen from air?

Accepted Answer

C: Permeation rate of nitrogen

Answer

A: Cooling rate of nitrogen

Answer

B: Warming up rate of nitrogen

Answer

D: Freezing rate of nitrogen

Question 7

The steam heaters onboard LNG tankers work based on "heat transfer" principles. It is important to note the gas volume/liquid volume ratio of LNG at -161.5°C', What is the correct ratio?

Accepted Answer

B: 632:1

Answer

A: 161:1

Answer

C: 505:1

Answer

D: 404:1

Question 8

Why level gauges fitted onboard LNG carriers are of the "closed" type?

Accepted Answer

A: It restricts release of liquid or vapor to atmosphere when in us

Answer

B: It is cost effectiv

Answer

C: It is easy to install

Answer

D: It is maintenance -- fr

Question 9

You are in charge of man - entry into an enclosed space. Which of the following will you check using portable gas detectors?

Accepted Answer

B: Toxicity

Answer

A: Atmospheric pressure

Answer

C: Dew point

Answer

D: Temperatur

Question 10

Onboard an LNG carrier in port, the wheelhouse is unmanned. What will be the watch station of the duty cargo officer?

Accepted Answer

B: Cargo control room

Answer

A: Engine control room

Answer

C: Electrical equipment room

Answer

D: Officer's cabin

Question 11

Onboard an LNG tanker, the main cargo pumps are installed at the bottom of the tripod mast located in the after end of cargo tanks, Which factor should be adjusted to maximize discharge rate?

Accepted Answer

B: Trim

Answer

A: Vapor supply capacity

Answer

C: List

Answer

D: Gas burning capacity

Question 12

In ship's ESDS, an automatic electrical system which energizes ESDS due to temperature change of the sensor, fitted at each tank domes and both manifold platforms is known as

Accepted Answer

A: Automatic fusible elements

Answer

B: Automatic push button

Answer

C: Infrared gas detection system

Answer

D: Automatic heat sensors

Question 13

Which of the following will not cause an activation of the ESDS?

Accepted Answer

C: Differential pressuree between primary and secondary insulation space - too low

Answer

A: Differential pressuree between cargo tank and atmosphere - too low

Answer

B: Differential pressuree between cargo tank and primary insulation space - too low

Answer

D: Manual push button and fusible elements

Question 14

Where can electrical equipment classified as exib be used?

Accepted Answer

B: In Zones 1 and 2

Answer

A: In Zones 0, 1 and 2

Answer

C: In Zones 0 and 2

Answer

D: In Zones 0 and 1

Question 15

What is the latest propulsion solution introduced to the LNG shipping industry?

Accepted Answer

B: Duel - Fuel Diesel Electric (DFDE)

Answer

A: Steam turbines

Answer

C: Low - speed diesel with a BOG reliquefaction plant

Answer

D: Gas turbin

Question 16

Onboard an LNG carrier, with NO 96 containment system, what will happen when pressure inside primary space is equal to cargo tank pressure?

Accepted Answer

D: Nothing will happen - no damagee to primary barrier

Answer

A: Primary barrier strips will be shifted from its original position

Answer

B: Primary barrier strips will be pressed hard onto primary insulation box

Answer

C: Primary barrier will collapse inward

Question 17

Which are the international bodies that provide regulatory standards for electrical equipment certification?

Accepted Answer

B: IEC and CENELEC

Answer

A: IEEC and CENELEC

Answer

C: IEEC and ISO

Answer

D: IMO and ISO

Question 18

After the removal of bulk water from damaged insulation space, Why is it so important to dry out the spaces until the atmosphere dew point is -40°C or lower

Accepted Answer

A: As there is a possibility for water being trapped and remaining in the insulation spaces

Answer

B: As there is a posisbility of mud collected at the bottom of the insulation spaces

Answer

C: To cool down the cargo tanks for immediate loading of cargo

Answer

D: To avoid the accumulation of rust dust at the bottom of the insulation spac

Question 19

The commercially viable propulsion systems for Deepsea LNG tanker ships will not include,

Accepted Answer

D: Medium speed Diesel with a BOG Reliquefaction plant

Answer

A: Conventional plant with steam turbines and dual fired boilers

Answer

B: Bual-Fuel Diesel Electric (DFDE) plant

Answer

C: Slow Speed Diesel with a Boil-Off Gas (BOG) Reliquefaction Plant

Question 20

What should the Master of an LNG carrier do if the CTS fails?

Accepted Answer

C: Inform the terminal and activate ESD button

Answer

A: Use the gauging reports of shore receiving tanks.

Answer

B: Inform the Company and receivers. Use manual gauging and tank tables

Answer

D: Suspend cargo operation till CTS is repaired

Question 21

As per IGC Code the "design loads" for a particular cargo containment system, which calculation is a requirement?

Accepted Answer

B: Sloshing load

Answer

A: Crack load

Answer

C: Hydrostatic load

Answer

D: Damage load

Question 22

The carriage of LNG cargo requires a certificate for trading called as___________.

Accepted Answer

A: International Certificate of Fitness for the Carriage of Liquefied Gases in Bulk

Answer

B: International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk (NLS Certificate)

Answer

C: The International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code), has been mandatory under OLAS chapter VII

Answer

D: International Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk

Question 23

If an LNG sale document is marked as Delivered Ex Ship (DES), after discharge who is the owner of the 'heel' retained onboard?

Accepted Answer

B: Heel belong to the seller

Answer

A: Heel belongs to the buyer

Answer

C: Heel belongs 50% to the buyer and 50% to the seller

Answer

D: Heel belongs 75% to the buyer and 25% to the seller

Question 24

At what temperature will methane change from vapour to liquid at atmospheric pressure?

Accepted Answer

B: -161.5°C

Answer

A: -141.5°C

Answer

C: -151.5°C

Answer

D: -131.5°C

Question 25

What is the critical temperature and pressure of methane?

Accepted Answer

C: -82.5°C and44.7 bars

Answer

A: -145.5°C and 44.7 bars

Answer

B: -82.5°C and 47,4 bars

Answer

D: -161.5°C and 47.4 bars

Question 26

Typical inert gas consists of approximately 0.5% Oxygen, 15% Carbon dioxide, 0.5% Carbon monoxide, Oxides of nitrogen and Sulphur dioxide. Which gas forms nearly 84% of the Inert gas?

Accepted Answer

B: Nitrogen

Answer

A: Propan

Answer

C: Butan

Answer

D: Methan

Question 27

The latent heat is termed as latent heat of vaporization in the case of__________.

Accepted Answer

B: boiling

Answer

A: melting

Answer

C: condensing

Question 28

What are the two main contractual arrangements used in LNG shipping?

Accepted Answer

B: Delivery Ex - Ship (DES) and Free On Board (FOB)

Answer

A: Delivery Ex - Ship (DES) and Freight On Board (FOB)

Answer

C: Delivery Ex Shore (DES) and Free On Board (FOB)

Answer

D: Delivery On Board (DOB) and Free On Board (FOB)

Question 29

_________________ is an action where the state of liquid is changed into a vapour or gas.

Accepted Answer

B: Boiling

Answer

A: Melting

Answer

C: Condensing

Question 30

The pressure applied at the sea level is called as ______________ pressure.

Accepted Answer

C: atmospheric

Answer

A: absolut

Answer

B: gaug

Advanced Training for Liquefied Gas Tanker Cargo Operations (GASCO) (Set 11)

When using the breathing apparatus, the person is warned of low air volume remaining in his air bottle by the meter needle in the red zone and

Questions in GASCO Set 11

Question Discussion & Notes

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