Section 16 MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THEREOF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND RECORDERS AND REPRODUCERS AND PARTS AND ACCESSORIES OF SUCH ARTICLES 84 NUCLEAR REACTORS, BOILERS, MACHINERY AND MECHANICAL APPLIANCES; PARTS THEREOF 84 01 NUCLEAR REACTORS; FUEL ELEMENTS (CARTRIDGES), NON-IRRADIATED, FOR NUCLEAR Commodity Code Description 84 01 10 NUCLEAR REACTORS 84 01 20 MACHINERY & APPARATUS FOR ISOTOPIC SEPARATION, & PARTS THEREOF 84 01 30 FUEL ELEMENTS (CARTRIDGES), NON-IRRADIATED 84 01 40 PARTS OF NUCLEAR REACTORS