- Regulation II-2/16.3.3 allows chemical tankers the option to begin inerting their cargo tanks after the cargo tank has been loaded, but before commencing unloading, but only if nitrogen is used as the inerting medium. In this instance, the nitrogen inerting should continue until the cargo tank has been purged and freed of all flammable vapours prior to gas freeing.
- The changes to the IBC Code clarify the operational procedures for new and existing chemical tankers.
- Chemical tankers which carry products containing oxygen-dependent inhibitors.
The oxygen content of the Inert Gas supplied to cargo tanks should be 5% or less. However, it is to be noted that too less content of oxygen in the IG would introduce other impurities into the cargo tanks.
General arrangement of the inert gas system.
The general arrangement of the inert gas system is as follows:
