3.11.4 Arrangement II
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Statutory Documents - IMO Publications and Documents - Specifications and Manuals - Inert Gas Systems - 3 Function and Design Considerations - 3.11 Arrangements for inerting, purging and gas-freeing (regulation 62.13) - 3.11.4 Arrangement II

3.11.4 Arrangement II

 Gas is introduced at the bottom of the tank and vented from the top. Gas replacement is by the dilution method. This arrangement introduces the gas through a connection between the inert gas deck main (just forward of the mechanical nonreturn valve) and the bottom cargo lines (see figure 12). A special fixed gas-freeing fan may also be fitted. Exhaust gas may be vented through individual vent stacks or, if valves are fitted to isolate each cargo tank from the inert gas main, through this main to the mast riser or high velocity vent.

Parent topic: 3.11 Arrangements for inerting, purging and gas-freeing (regulation 62.13)
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