LGTCO/LGTF Exit Exam • Set 5 Question 30 of 30

What is the propellant gas used in fixed dry chemical powder (DCP) fire-fighting systems on gas carrier decks?

✓

Direct Answer

Option D: Nitrogen

High-pressure dry Nitrogen (N2) gas cylinders are utilized as the propellant medium to fluidize and discharge dry chemical powder through deck monitors and hand lines.

All Options

Oxygen

Compressed atmospheric air

Acetylene

Nitrogen (Correct Answer)

Detailed Explanation & Context

High-pressure dry Nitrogen (N2) gas cylinders are utilized as the propellant medium to fluidize and discharge dry chemical powder through deck monitors and hand lines.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).

Practice Full LGTCO/LGTF Set 5

Test yourself with 30 interactive questions, live timer, and instant score.

Launch Practice Simulator →

Question Discussion & Notes

Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.

Loading mariner discussions...

« Previous Question Next Question »

More Questions in LGTCO/LGTF Set 5

View All 30 →

Q1 What are Gas Hydrates in liquefied gas operations? Q2 What are Peroxides in chemical and gas cargo handling? Q3 Liquefied gas cargo tank contents are bounded directly by the: Q4 A device used to determine the liquid-vapour interface during the ullaging of semi-pressurized and fully pressurized tanks is a: Q5 Which of the following is an example of a closed gauging system that does not penetrate the cargo tank shell? Q6 Where on a firefighter wearing SCBA is the fireproof 30-metre lifeline attached? Q7 Which of the following is a solid desiccant medium that dries gas by adsorption of water molecules? Q8 The temperature at which condensation will take place within a gas mixture if further cooling occurs is known as: Q9 A gauging system employing a device which penetrates the tank and which, when in use, permits a small quantity of cargo vapour or liquid to escape to atmosphere is known as: Q10 Float gauges installed on liquefied gas tankers are an example of which gauging category?