Fuel lines on an LNG ship must be:

Fuel lines on an LNG ship must be gas-freed to ensure safety during operations. Gas-freedom means that the lines are cleared of any combustible gases, thereby minimizing the risk of an explosion or fire. This is crucial on LNG vessels due to the highly flammable nature of methane and other gases handled during loading, unloading, and storage operations.

When fuel lines are gas-freed, it enhances the safety of the crew working on the vessel, as well as the safety of the environment and the ship itself. By ensuring that no flammable gases remain in the lines, the risk of ignition from sparks or heat sources is significantly reduced.

While checking for leaks, capping tightly, and other safety measures are important maintenance practices, they do not specifically address the critical risk posed by the presence of flammable gases in fuel lines. Therefore, gas-freedom is a primary safety priority in the operation of LNG vessels.