LNG Critical Equipments_Part 2 Quiz

What is the purpose of emergency stops and remote closing devices on LNG vessels?

• To enhance the aesthetic design of the vessel

• To provide a quick response mechanism in case of emergencies

• To increase the speed of the vessel

• To monitor the temperature of the LNG cargo

Which of the following actions is performed by the Emergency Shutdown (ESD) system?

• It starts the cargo pumps

• It stops pumps/compressors and closes manifold valves

• It increases the pressure in the cargo system

• It opens all valves for faster cargo transfer

What is the primary purpose of a fire detection system on an LNG (Liquefied Natural Gas) vessel?

• To monitor the temperature of the cargo.

• To detect fire, gas leaks, or abnormal heat early in areas where LNG is stored, handled, or transported.

• To regulate the pressure inside the LNG tanks.

• To ensure the LNG remains in liquid form during transport.

What is the primary purpose of the Salwico SW2020 Gas Sampling System?

• To monitor explosive and toxic gases aboard ships.

• To control the temperature in cargo tanks.

• To manage the ship's navigation system.

• To regulate the ship's fuel consumption.

The Salwico SW2020 Gas Sampling System is designed to monitor gases in which of the following areas?

• Cargo tanks, ballast tanks, cofferdams, and pump rooms.

• Engine rooms, navigation decks, and control rooms.

• Passenger cabins, dining areas, and recreational zones.

• Fuel tanks, engine rooms, and navigation decks.

What happens when a sample from any of the sampling points reaches 30% LEL?

• A gas alarm is activated on the IAS.

• The system shuts down automatically.

• The sampling process is paused.

• The gas is vented out immediately.

At what gas reading is a high-high gas alarm activated?

• 60% LEL

• 30% LEL

• 50% LEL

• 70% LEL

What is the primary purpose of the fixed gas detection system GS3000 in LNG vessels?

• To detect and monitor gas levels for safety

• To control the temperature of LNG vessels

• To manage the navigation system of the vessel

• To regulate the fuel supply to the engines

At what percentage of LEL does the GS3000 system activate a gas alarm?

• 20%

• 30%

• 40%

• 50%

What happens when the LEL reading reaches 60% in the GS3000 system?

• A low-level alarm is activated.

• A high-high alarm is activated.

• The system shuts down.

• The detectors stop functioning.