Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p51
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 150326–153457

circulators specially designed or prepared for circulating the primary coolant of "nuclear reactors";
h. 'Nuclear reactor internals' specially designed or prepared for use in a "nuclear reactor", including, for example, support columns for the core, fuel channels, calandria tubes, thermal shields, baffles, core grid plates, and diffuser plates;
Note: In 0A001.h. 'nuclear reactor internals' means any major structure within a reactor vessel which has one or more functions such as supporting the core, maintaining fuel alignment, directing primary coolant flow, providing radiation shields for the reactor vessel, and guiding in‑core instrumentation.
i. Heat exchangers as follows:
1. Steam generators specially designed or prepared for the primary, or intermediate, coolant circuit of a "nuclear reactor";
2. Other heat exchangers specially designed or prepared for use in the primary coolant circuit of a "nuclear reactor".
Note: 0A001.i. does not apply to heat exchangers for the supporting systems of the reactor e.g. the emergency cooling system or the decay heat cooling system.
0. A. 001. j. Neutron detectors specially designed or prepared for determining neutron flux levels within the core of a "nuclear reactor".
k.  'External thermal shields' specially designed or prepared for use in a "nuclear reactor" for reduction of heat loss and also for containment vessel protection.
Note: In 0A001.k. 'external thermal shields' means major structures placed over the reactor vessel which reduce heat loss from the reactor and reduce temperature within the containment vessel.
0. B. Test, Inspection and Production Equipment
0. B. 001. Plant for the separation of isotopes of "natural uranium", "depleted uranium" and "special fissile materials", and specially designed or prepared equipment and components therefor, other than analytical instruments, as follows:
a. Plant specially designed for separating isotopes of "natural uranium", "depleted uranium", and "special fissile materials", as follows:
1. Gas centrifuge separation plant;
2. Gaseous diffusion separation plant;
3. Aerodynamic separation plant;
4. Chemical exchange separation plant;
5. Ion‑exchange separation plant;
6. Atomic vapour "laser" isotope separation (AVLIS) plant;
7. Molecular "laser" isotope separation (MLIS) plant;
8. Plasma separation plant;
9. Electro magnetic separation plant;
b. Gas centrifuges and assemblies and components, specially designed or prepared for gas centrifuge separation process, as follows:
Note: In 0B001.b. 'high strength‑to‑density ratio material' means any material with a high strength‑to‑density ratio, including any of the following:
                   a. Maraging steel capable of an ultimate tensile strength of 1.95 GPa or more;
                   b. Aluminium alloys capable of an ultimate tensile strength of 0.46 GPa or more; or
                   c. Filamentary materials suitable for use in composite structures and having a "specific modulus" of 3.18 x 106 m or greater and a "specific tensile strength" of 7.62 x 104 m or greater;
1. Gas centrifuges;
2. Complete rotor assemblies;
3. Rotor tube cylinders