Basic Training for Liquefied Gas Tanker Cargo Operations (LGTF)

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What to do in case the General emergency alarm sounds?

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

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 Engine Room

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

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Independent Type B Tanks on Gas carriers are:

Self supporting only when full

Not self supporting

Self supporting only when empty

Completely Self supporting when Full or empty

3 / 25

Critical Temperature for Ethylene is:

1.2°C.

9.9°C.

32.1°C.

19.8°C.

4 / 25

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

18 bar.

0.9 bar.

0.25 bar.

0.7 bar.

5 / 25

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

At least Four

At least Three

At least Two

At least One

6 / 25

What is the Critical pressure of Ethylene in bars absolute?

50.5 bars absolute

38.8 bars absolute

42.6 bars absolute

46.2 bars absolute

7 / 25

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

At least three

At least four

At least two

At least one

8 / 25

What is Flash Point?

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

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.

9 / 25

The Ship’s General Emergency Alarm is:

Continuous blasts on Ship’s whistle.

Three long blasts on Ship’s Whistle

Verbal announcement by Captain.

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

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What is known as Inert Gas?

Toxic gas having concentration percentage below the TLV-TWA

Flammable gas with concentration between the LEL and UFL Limits

Non-flammable gasses containing insufficient oxygen to support combustion

Flammable gas with concentration above UFL Limits.

11 / 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

12 / 25

Critical Temperature for Methane is:

44.5°C.

- 64.8°C.

- 82.5°C.

32.1°C.

13 / 25

What is the Critical pressure of Methane in bars absolute?

34.3 bars absolute

44.7 bars absolute

65.2 bars absolute

50.3 bars absolute

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Critical Temperature for Propane is:

100.4°C

96.8°C

32.1°C

44.5°C

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

Inerting

Aerating

Drying

Cooling Down

16 / 25

What is Critical Temperature?

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.

The Temperature at which the gas gets superheated

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

Fixed DCP System

Fixed Low Expansion Foam Fire Fighting system

Fixed Wet Chemical Fire fighting system

C02 Fixed System

18 / 25

What is the Chemical Formula of Vinyl Chloride?

NaClO

CH3 COCl

C2H3Cl

CH4

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What is Inert Gas?

A gas which burns above the critical temperature.

A flammable gas.

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

A gas used to calibrate Gas detection instruments.

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What is the Chemical Formula of Methane?

C2H6

C2H4

CH4

C3H8

21 / 25

What is the atmospheric boiling point of Chlorine?

- 25°C

- 39°C

-34°C

- 45°C

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

aerating

Inerting

Gassing up.

Gas freeing

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

Aerating

Cooling down

Gassing Up

Inerting

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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 below the LFL (Lower Flammable Limit)

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 between 10%of the LFL and LFL.

25 / 25

LNG Fire is classified under which Class of Fire?

Class B

Class C

Class D

Class A

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