This Tariff Concession Order TCO 0934179, made under s.269P of the Customs Act 1901, declares that the imported "water pumping plant" described in Column 1 is a good to which item 50 in Part III of Schedule 4 applies. It took effect 14 September 2009 and remains until revoked under ss.269SC or 269SD.
Mechanically, it changes tariff treatment of those imports, affecting importers' tariff obligations and administration. The decision was made by a delegate of the CEO (Wendy Knowles); importers must use the listed description and classification.