Basic Training for Liquefied Gas Tanker Cargo Operations (LGTF)

1 / 25

How many Relief Valves have to be fitted for Cargo Tanks above 20m3 Capacity?

At least Two

At least Four

At least One

At least Three

2 / 25

What is the operation carried out prior to Cooling down the Tanks on Fully Refrigerated Liquified Gas Carriers?

Gas freeing

aerating

Inerting

Gassing up.

3 / 25

What is Critical Temperature?

The Temperature at which the gas gets superheated

The Temperature at which the Liquified gas changes state from liquid to gas

The temperature above which a gas cannot be liquefied by pressure alone

The temperature at which the gas changes state to liquid at a corresponding pressure.

4 / 25

LNG Fire is classified under which Class of Fire?

Class D

Class A

Class C

Class B

5 / 25

What is the Critical pressure of Methane in bars absolute?

65.2 bars absolute

50.3 bars absolute

44.7 bars absolute

34.3 bars absolute

6 / 25

What is the atmospheric boiling point of Chlorine?

- 45°C

- 25°C

-34°C

- 39°C

7 / 25

The IGC Code stipulates that a secondary barrier must be able to contain tank leakage for a period of how many days?

15 days

30 days

10 days

45 days

8 / 25

Critical Temperature for Propane is:

32.1°C

100.4°C

96.8°C

44.5°C

9 / 25

What operation is done on Fully refrigerated Gas Carriers before Loading?

Aerating

Cooling down

Inerting

Gassing Up

10 / 25

What is the Critical pressure of Ethylene in bars absolute?

50.5 bars absolute

38.8 bars absolute

46.2 bars absolute

42.6 bars absolute

11 / 25

What operation is done on Fully refrigerated Gas Carriers before gassing up after getting out from Drydock?

Cooling Down

Aerating

Drying

Inerting

12 / 25

Which Fixed Fire fighting system is mandatory for Fire fighting on the Deck of a Liquified Gas Carrier?

Fixed Wet Chemical Fire fighting system

C02 Fixed System

Fixed Low Expansion Foam Fire Fighting system

Fixed DCP System

13 / 25

What is Flammable Range?

A mixture of Flammable gas in air whose gas percentage is between the LFL and UFL.

A mixture of Flammable gas in air whose gas percentage is above the UFL (Upper flammable Limit) B.

A mixture of Flammable gas in air whose gas percentage is below the LFL (Lower Flammable Limit)

A mixture of Flammable gas in air whose gas percentage is between 10%of the LFL and LFL.

14 / 25

What is Flash Point?

The temperature at which a BLEVE (Boiling Liquid Expanding Vapour Explosion) takes place

The lowest temperature to which a liquid or gas requires to be raised to cause self-sustained spontaneous combustion without ignition by a spark or flame

The lowest temperature at which the liquid ignites without spark.

The lowest temperature at which a liquid gives off sufficient vapour to form a flammable mixture with air near the surface of the liquid.

15 / 25

Independent Type B Tanks on Gas carriers are:

Completely Self supporting when Full or empty

Self supporting only when empty

Self supporting only when full

Not self supporting

16 / 25

What to do in case the General emergency alarm sounds?

Wear PPE, lifejacket, carry Immersion suit and go to Bridge.

Wear PPE, lifejacket , carry Immersion suit and go to the designated Muster Point as mentioned in the Ship’s Muster List

Wear PPE, lifejacket , carry Immersion suit and go to the Forecastle

Wear PPE, lifejacket, carry immersion suit and go to Engine Room

17 / 25

What is the Chemical Formula of Methane?

CH4

C3H8

C2H4

C2H6

18 / 25

What is Inert Gas?

A gas used to calibrate Gas detection instruments.

A gas which burns above the critical temperature.

A gas or a mixture of non-flammable gasses containing insufficient oxygen to support combustion.

A flammable gas.

19 / 25

How many Monitors are to be fitted in a fixed DCP Installation for Deck fire fighting on Gas Ships?

At least one

At least three

At least two

At least four

20 / 25

What is known as Inert Gas?

Non-flammable gasses containing insufficient oxygen to support combustion

Toxic gas having concentration percentage below the TLV-TWA

Flammable gas with concentration between the LEL and UFL Limits

Flammable gas with concentration above UFL Limits.

21 / 25

The Ship’s General Emergency Alarm is:

Seven short blasts followed by one long blast from the ship's horn or bell

Three long blasts on Ship’s Whistle

Continuous blasts on Ship’s whistle.

Verbal announcement by Captain.

22 / 25

What is the Chemical Formula of Vinyl Chloride?

C2H3Cl

NaClO

CH4

CH3 COCl

23 / 25

Critical Temperature for Methane is:

- 82.5°C.

- 64.8°C.

44.5°C.

32.1°C.

24 / 25

Critical Temperature for Ethylene is:

19.8°C.

1.2°C.

9.9°C.

32.1°C.

25 / 25

The maximum allowable tank design pressure in the vapour space for Independent Type A Tanks

0.9 bar.

18 bar.

0.25 bar.

0.7 bar.

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