In the case of crude oil carriers of 20-40,000 dwt there is provision for exemption by flag States where it is considered unreasonable or impracticable to fit an inert gas system and high-capacity fixed washing machines are not used.

对于 20-40,000 载重吨的原油运输船，如果船旗国认为安装惰性气体系统不合理或不切实际且不使用大容量固定式洗衣机，则有豁免规定。