Nuclear Reactors, Boilers, Machinery and Mechanical Appliances

Chapter 84 of the U.S. Harmonized Tariff Schedule covers nuclear reactors and associated equipment, along with boilers, machinery and mechanical appliances, including their parts and accessories. It encompasses a wide range of industrial and power-generation devices, ranging from complete reactor units to pumps, compressors, and other mechanical installations used in manufacturing, construction and energy production. The classification is used for customs duties on these heavy-industry goods.