This Order declares that housings for pipeline cleaning or inspection machines (tariff heading 8481.90.90) are to be treated under item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 15 September 2011. It is made by a delegate of the Chief Executive Officer under section 269P. Mechanically, the declaration changes the tariff treatment applied to those imported goods (affecting duty liability and import documentation) until revoked under sections 269SC or 269SD or an expiry in the table.