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New technologies are being developed by others to provide fuel tank inerting: The On-Board Inert Gas Generation System (OBIGGS) system, tested in 2004 by the FAA and NASA, with an opinion written by the FAA in 2005. [10] This system is currently in use by many military aircraft types, including the C-17. This system provides the level of safety ...
Inert gas can also be used to purge the tank of the volatile atmosphere in preparation for gas freeing - replacing the atmosphere with breathable air - or vice versa. The flue gas system uses the boiler exhaust as its source, so it is important that the fuel/air ratio in the boiler burners is properly regulated to ensure that high-quality inert ...
The inerting systems use an inert gas generator to supply inert make-up gas instead of air. This procedure is often referred to as inerting. Technically, the procedure ensures that the atmosphere in the tank's headspace remains unignitable. The gas mixture in the headspace is not inert per se, it's just unignitable. Because of its content of ...
The hot, dirty gas is then passed through a scrubbing tower which cleans and cools it using seawater. This gas is then delivered to cargo tanks to prevent explosion of flammable cargo. [1] This generator is sometimes confused with flue gas systems, which draw inert gas from the boiler systems of the ship. Flue gas systems do not have a burner ...
Because an inert purge gas is used, the purge procedure may (erroneously) be referred to as inerting in everyday language. This confusion may lead to dangerous situations. Carbon dioxide is a safe inert gas for purging. Carbon dioxide is an unsafe inert gas for inerting, as it may ignite the vapors and result in an explosion. [2]
The exception is in cases when the tank must be entered. [22] Safely gas-freeing a tank is accomplished by purging hydrocarbon vapors with inert gas until the hydrocarbon concentration inside the tank is under about 1%. [22] Thus, as air replaces the inert gas, the concentration cannot rise to the lower flammable limit and is safe. [22]
Things are about to get really bad in the United States. Clowns really are going to cry and birthday parties will soon become decidedly dull unless the government quickly passes a law authorizing ...
Once the tanks are methane free, the inert gas plant is switched to dry air production, which is used to remove all the inert gas from the tanks until they have a safe working atmosphere. Transportation of natural gas both in the form of LNG and by pipeline causes greenhouse gas emissions, but in different ways.