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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If hydraulic linear actuators without nuclear control features
Standard hydraulic cylinders for linear motion classify under pneumatic/hydraulic machinery.
If contains AC motor components primarily
Outboard electric motors exceeding 750W fall under AC motor classifications.
If imported as standalone stainless steel tubes
General stainless steel tube fittings without reactor-specific penetrations classify differently.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include seismic and dynamic load test reports per nuclear standards like RCC-M or KTA
• Verify compatibility with specific reactor models (PWR/BWR) in import declarations
Related Products 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.