This Tariff Concession Order applies Part III, Schedule 4 Item 50 of the Customs Tariff Act 1995 to a narrowly described product: adjustable orifice plates for coal pulveriser outlet pipes used in steam‑generation boilers (tariff classification 8481.80.90). It took effect 11 May 2009 and continues until revoked. Who pays/benefits: importers of those parts. Who decides and can revoke: a delegate of the CEO under s.269P, with revocation available under ss.269SC/269SD. Customs will apply the referenced Schedule 4 item to imports matching the description and classification.