Parts of nuclear reactors
Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation; parts thereof: > Parts of nuclear reactors
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8401.40.00.00
Nuclear Reactor Pressure Vessel
A massive cylindrical steel vessel designed to contain the reactor core, coolant, and heat generated during nuclear fission in a pressurized water reactor (PWR). It falls under HTS 8401.40.00.00 as a critical structural part of nuclear reactors, essential for maintaining high-pressure conditions and safety containment.
Reactor Core Shroud
A stainless steel cylindrical assembly surrounding the nuclear fuel assemblies in boiling water reactors (BWRs), directing coolant flow and providing radiation shielding. Classified under HTS 8401.40.00.00 as it is a specialized internal structural component unique to nuclear reactor design.
Nuclear Reactor Internals Upper Guide Structure
A lattice framework installed above the reactor core to align and guide control rods and fuel assemblies during refueling operations. Falls under HTS 8401.40.00.00 as reactor internals designed for precise positioning under irradiation conditions.
Reactor Vessel Head Penetration Adapter
Forged adapter forgings that provide pressure-tight seals for control rod drive mechanisms penetrating the reactor vessel head. Essential nuclear reactor part under HTS 8401.40.00.00 for maintaining vessel integrity.
Nuclear Fuel Assembly Flow Skirt
Bottom flow distributor attached to fuel assemblies ensuring proper coolant distribution across the core. Part of nuclear reactors under HTS 8401.40.00.00 when supplied as reactor replacement component.
Reactor Coolant Pump Casing
High-pressure casing housing the impeller of primary coolant circulation pumps in nuclear power plants. Falls under HTS 8401.40.00.00 as part of the reactor coolant pressure boundary system.
Containment Penetration Sleeve
Sleeve assemblies providing pressure-tight, seismic-qualified penetrations through reactor containment structures for piping and cabling. Essential nuclear reactor safety part under HTS 8401.40.00.00.
Control Rod Drive Mechanism Housing
Pressure-tight housing containing the mechanisms that insert and withdraw control rods to regulate nuclear fission rates in reactors. It is a part of nuclear reactors under HTS 8401.40.00.00 due to its role in reactivity control and integration with the reactor vessel head.
Steam Generator Channel Head
Forged hemispherical head assembly connecting primary reactor coolant piping to steam generator tubes in PWRs. Classified as a nuclear reactor part under HTS 8401.40.00.00 because integral to the primary pressure boundary of the reactor coolant system.
Core Support Barrel
Cylindrical support structure that locates the reactor core relative to the vessel and directs coolant flow in PWRs. Classified under HTS 8401.40.00.00 as fundamental reactor internal for core positioning and thermal-hydraulics.