| Tariff Classification | 
| 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 |  | chapter 84 | Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof |  | 84.01 | Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation: |  | 8401.40 | -Parts of nuclear reactors |  |