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Welcome back to LNG4U — your take on where the LNG market is moving and what’s behind it.
We start with an insight to keep you thinking ahead 🎓, then break down the developments influencing the outlook — from pricing momentum 💰 to offshore operations 🚢.
Let’s dive in.

🎓 LNGKnowledge

Each LNG ship has the 👉 Gas Management System which keeps the cargo tank pressure within normal operation 📊 limits . It also includes safety function in case the tank pressure exceeds the normal operation limits 📈.

Two main tasks for the #GMS are to protect 🚧 the tanks against over pressurising and under pressurising.

1️⃣ Over pressurising

🎯 To protect the cargo tanks from being over pressurised due to natural #BOG, the gas has to be consumed by the Engines/Boilers, burned by the Gas Combustion Unit GCU , Reliquified , or vented to the Atmosphere 🚨 (* If fitted)

2️⃣ Under Pressurising

🎯 To protect the cargo tanks from being under pressurised, the Engines/Boilers will at a certain point switched to FO/DO consumption only , Shut down of Cargo pumps/Compressors 🔴 during Discharging operation.

Hereunder a general arrangement of a DFDE LNG ship four 4️⃣ cargo tanks. These equipment may differ for the other Engines Types.

Source : LNG ship cargo operating manual

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