Flanged connections should be provided in the Ballast tanks for inerting/purging the tanks via flexible hoses in the event of cargo leakage through the tank bulkhead.
Following are the disadvantages with regard to having permanent Inert Gas Blanketing of Ballast tanks.
- The additional independent Inerting and vent headers required for the ballast tanks would increase the amount of piping and interlocked valves on deck resulting in a congested deck space.
- The escape route is generally routed via the tank tops of the Ballast tanks. Therefore having permanent Inert Gas piping and valves will complicate the design of escape routes.
- Additional Inert gas generation system (Blowers, Scrubbers, Deck seal) might have to be installed to serve the Ballast tanks Inerting, which require additional space in the already congested Engine room and Main deck.