This order declares that a specified "seawater intake plant" (with listed pumps, valves, screens, chemical dosers, instrumentation, piping/manifolds and fittings) is covered by Schedule 4, Item 50 of the Customs Tariff Act 1995 from 20 July 2009 until revoked. It changes tariff treatment at import for those goods, so importers and their suppliers face lower or different duty treatment while the Commonwealth forgoes corresponding tariff revenue; the instrument was made by a delegate under s.269P and can be revoked under ss.269SC/269SD.