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for ships required to be interted when carrying flammable chemicals,before gas-freeing with air 'the cargo tanks shall be purged with inert gas through outlets pipes having a cross sectional area such that an exit velocity of at least 20m/s can be msintained when any three cargo tanks are being simultaneously supplied with inert gas .this outlet shall be at least 2meters above deck level. 这种舱的惰性气体是从哪里注入呢? |
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