A.1.1. Special fissionable material, as follows:
(a)plutonium and all isotopes, alloys and compounds and any material that contains any of the foregoing, other than plutonium 238 that is contained in heart pacemakers; and
(b)uranium 233, uranium enriched in the isotopes 235 or 233 and all alloys and compounds and any material that contains any of the foregoing.

A.1.2.Source material
Source materials that are in any form, including ore, concentrate, compound, metal or alloy, or that are incorporated in any substance other than medicinals and in which the concentration of source material is greater than 0.05 weight %, as follows:
(a)uranium that contains the mixture of isotopes that occurs in nature;
(b)uranium that is depleted in the isotope 235; and
(c)thorium.

A.1.3.Deuterium and heavy water
Deuterium, heavy water (deuterium oxide) and any other deuterium compound in which the ratio of deuterium to hydrogen atoms exceeds 1:5,000.

A.1.4.Nuclear grade graphite
Graphite having a purity level better than 5 ppm boron equivalent and with a density greater than 1.50 g/cm³.

A.1.5.Tritium
Tritium, tritium compounds or mixtures containing tritium in which the ratio of tritium to hydrogen by atoms exceeds 1 part in 1 000 and products that contains any of the foregoing.

A.2.1.Nuclear reactors and especially designed or prepared equipment and components therefor, including:

A.2.1.1.Complete nuclear reactors
Nuclear reactors capable of operation so as to maintain a controlled self-sustaining fission chain reaction.

A.2.1.2.Nuclear reactor vessels
Metal vessels, or major shop-fabricated parts therefor, especially designed or prepared to contain the core of a nuclear reactor as well as reactor internals as defined in paragraph A.2.1.8.

A.2.1.3.Nuclear reactor fuel charging and discharging machines
Manipulative equipment especially designed or prepared for inserting or removing fuel in a nuclear reactor.

A.2.1.4.Nuclear reactor control rods and equipment
Especially designed or prepared rods, support or suspension structures therefor, rod drive mechanismsor rod guide tubes to control the fission process in a nuclear reactor.

A.2.1.5.Nuclear reactor pressure tubes
Tubes which are especially designed or prepared to contain fuel elements and the primary coolant in a nuclear reactor at an operating pressure in excess of 50 atmospheres.

A.2.1.6.Zirconium tubes
Zirconium metal and alloys in the form of tubes or assemblies of tubes, especially designed or prepared for use in a nuclear reactor and in which the relation of hafnium to zirconium is less than 1:500 parts by weight.

A.2.1.7.Primary coolant pumps
Pumps especially designed or prepared for circulating the primary coolant for nuclear reactors.

A.2.1.8.Nuclear reactor internals
Nuclear reactor internals especially designed or prepared for use in a nuclear reactor including support columns for the core, fuel channels, thermal shields, baffles, core grid plates, and diffuser plates.

A.2.1.9.Heat exchangers
Heat exchangers (steam generators) especially designed or prepared for use in the primary coolant circuit of a nuclear reactor.

A.2.1.10.Neutron detection and measuring instruments
Especially designed or prepared neutron detection and measuring instruments for determining neutron flux within the core of a nuclear reactor.

A.2.2.Plants for the reprocessing of irradiated fuel elements, and equipment especially designed or prepared therefor, including:

A.2.2.1.Irradiated fuel element chopping machines
Remotely operated equipment especially designed or prepared for use in a reprocessing plant as identified above and intended to cut, chop or shear irradiated nuclear fuel assemblies, bundles or rods.

A.2.2.2.Dissolvers
Critically safe tanks (e.g. small diameter, annular or slab tanks) especially designed or prepared for use in a reprocessing plant as identified above, intended for the dissolution of irradiated nuclear fuel and which are capable of withstanding hot, highly corrosive liquid, and which can be remotely loaded and maintained.

A.2.2.3.Solvent extractors and solvent extraction equipment
Especially designed or prepared solvent extractors such as packed or pulse columns, mixer settlers or centrifugal contactors for use in a plant for the reprocessing of irradiated fuel. Solvent extractors must be resistant to the corrosive effect of nitric acid. Solvent extractors are normally fabricated to extremely high standards (including special welding and inspection and quality assurance and quality control techniques) out of low carbon stainless steels, titanium, zirconium or other high-quality materials.

A.2.2.4.Chemical holding or storage vessel
Especially designed or prepared holding or storage vessels for use in a plant for the reprocessing of irradiated fuel. The holding or storage vessels must be resistant to the corrosive effect of nitric acid. The holding or storage vessels are normally fabricated of materials such as low carbon stainless steels, titanium or zirconium, or other high-quality materials. Holding or storage vessels may be designed for remote operation and maintenance and may have the following features for control of nuclear criticality:
(a)walls or internal structures with a boron equivalent of at least 2%;
(b)a maximum diameter of 175 mm (7 in.) for cylindrical vessels; or
(c)a maximum width of 75 mm (3 in.) for either a slab or annular vessel.

A.2.2.5.Plutonium nitrate to oxide conversion systems
Complete systems especially designed or prepared for the conversion of plutonium nitrate to plutonium oxide, in particular adapted so as to avoid criticality and radiation effects and to minimize toxicity hazards.

A.2.2.6.Plutonium oxide to metal production system
Complete systems especially designed or prepared for the production of plutonium metal, in particular adapted so as to avoid criticality and radiation effects and to minimize toxicity hazards.

A.2.3.Plants for the fabrication of nuclear reactor fuel elements, and equipment especially designed or prepared therefor including equipment which:
(a)normally comes in direct contact with, or directly processes, or controls, the production flow of nuclear material;
(b)seals the nuclear material within the cladding;
(c)checks the integrity of the cladding or the seal; or
(d)checks the finish treatment of the sealed fuel.

A.2.4.Plants for the separation of isotopes of uranium, and equipment, other than analytical instruments, especially designed or prepared therefor, including:

A.2.4.1.Gas centrifuges and assemblies and components especially designed or prepared for use in gas centrifuges, including:

A.2.4.1.1.Rotating components
(a)complete rotor assemblies:
thin-walled cylinders, or a number of interconnected thin-walled cylinders, manufactured from one or more of the high strength to density ratio materials. If interconnected, the cylinders are joined together by flexible bellows or rings as described in paragraph (c). The rotor is fitted with an internal baffle(s) and end caps, as described in paragraphs (d) and (e), if in final form. However the complete assembly may be delivered only partly assembled;
(b) rotor tubes:
especially designed or prepared thin-walled cylinders with thickness of 12 mm (0.5 in.) or less, a diameter of between 75 mm (3 in.) and 400 mm (16 in.), and manufactured from high strength to density ratio materials;
(c) rings or bellows:
components especially designed or prepared to give localized support to the rotor tube or to join together a number of rotor tubes. The bellows is a short cylinder of wall thickness 3 mm (0.12 in.) or less, a diameter of between 75 mm (3 in.) and 400 mm (16 in.), having a convolute, and manufactured from high strength to density ratio materials;
(d) baffles:
disc-shaped components of between 75 mm (3 in.) and 400 mm (16 in.) diameter especially designed or prepared to be mounted inside the centrifuge rotor tube, in order to isolate the take-off chamber from the main separation chamber and, in some cases, to assist the UF₆ gas circulation within the main separation chamber of the rotor tube, and manufactured from strength to density ratio materials; and
(e) top caps/bottom caps:
disc-shaped components of between 75 mm (3 in.) and 400 mm (16 in.) diameter especially designed or prepared to fit to the ends of the rotor tube, and so contain the UF₆ within the rotor tube, and in some cases to support, retain or contain as an integrated part an element of the upper bearing (top cap) or to carry the rotating elements of the motor and lower bearing (bottom cap), and manufactured from high strength to density ratio materials.

A.2.4.1.2.Static components
(a) magnetic suspension bearings:
especially designed or prepared bearing assemblies consisting of an annular magnet suspended within a housing containing a damping medium. The housing will be manufactured from a UF₆-resistant material. The magnet couples with a pole piece or a second magnet fitted to the top cap described in paragraph A.2.4.1.1.(e). The magnet may be ring-shaped with a relation between outer and inner diameter smaller or equal to 1.6:1. The magnet may be in a form having an initial permeability of 0.15 H/m (120,000 in CGS units) or more, or a remanence of 98.5% or more, or an energy product of greater than 80 kJ/m³ (107 gauss-oersteds). In addition to the usual material properties, it is a prerequisite that the deviation of the magnetic axes from the geometrical axes is limited to very small tolerances (lower than 0.1 mm or 0.004 in.) or that homogeneity of the material of the magnet is specially called for;
(b) bearings/dampers:
especially designed or prepared bearings comprising a pivot/cup assembly mounted on a damper. The pivot is normally a hardened steel shaft with a hemisphere at one end with a means of attachment to the bottom cap described in paragraph A.2.4.1.1.(e) at the other. The shaft may however have a hydrodynamic bearing attached. The cup is pellet-shaped with a hemispherical indentation in one surface. These components are often supplied separately to the damper;
(c) molecular pumps:
especially designed or prepared cylinders having internally machined or extruded helical grooves and internally machined bores. Typical dimensions are as follows: 75 mm (3 in.) to 400 mm (16 in.) internal diameter, 10 mm (0.4 in.) or more wall thickness, with the length equal to or greater than the diameter. The grooves are typically rectangular in cross-section and 2 mm (0.08 in.) or more in depth;
(d) motor stators:
especially designed or prepared ring-shaped stators for high speed multiphase AC hysteresis (or reluctance) motors for synchronous operation within a vacuum in the frequency range of 600 Hz to 2 000 Hz and a power range of 50 VA to 1 000 VA. The stators consist of multiphase windings on a laminated low loss iron core comprised of thin layers typically 2 mm (0.08 in.) thick or less;
(e) centrifuge housing/recipients:
components especially designed or prepared to contain the rotor tube assembly of a gas centrifuge. The housing consists of a rigid cylinder of wall thickness up to 30 mm (1.2 in.) with precision machined ends to locate the bearings and with one or more flanges for mounting. The machined ends are parallel to each other and perpendicular to the cylinder's longitudinal axis to within 0.05° or less. The housing may also be a honeycomb type structure to accommodate several rotor tubes. The housings are made of or protected by materials resistant to corrosion by UF₆; and
(f) scoops:
especially designed or prepared tubes of up to 12 mm (0.5 in.) internal diameter for the extraction of UF₆ gas from within the rotor tube by a Pitot tube action (that is, with an aperture facing into the circumferential gas flow within the rotor tube, for example by bending the end of a radially disposed tube) and capable of being fixed to the central gas extraction system. The tubes are made of or protected by materials resistant to corrosion by UF₆.

A.2.4.2.Especially designed or prepared auxiliary systems, equipment and components for gas centrifuge enrichment plants, including:

A.2.4.2.1.Feed systems/product and tails withdrawal systems
Especially designed or prepared process systems including:
(a)feed autoclaves (or stations), used for passing UF₆ to the centrifuge cascades at up to 100 kPa (15 psi) and at a rate of 1 kg/h or more;
(b)desublimers (or cold traps) used to remove UF₆ from the cascades at up to 3 kPa (0.5 psi) pressure. The desublimers are capable of being chilled to 203 K (-70°C) and heated to 343 K (70°C); and
(c)product and tails stations used for trapping UF₆ into containers.
This plant, equipment and pipework is wholly made of or lined with UF₆-resistant materials and is fabricated to very high vacuum and cleanliness standards.

A.2.4.2.2.Machine header piping systems
Especially designed or prepared piping systems and header systems for handling UF₆ within the centrifuge cascades. The piping network is normally of the triple header system with each centrifuge connected to each of the headers. There is thus a substantial amount of repetition in its form. It is wholly made of UF₆-resistant materials and is fabricated to very high vacuum and cleanliness standards.

A.2.4.2.3.UF₆ mass spectrometers/ion sources
Especially designed or prepared magnetic or quadrupole mass spectrometers capable of taking on-line samples of feed, product or tails, from UF₆ gas streams and having all of the following characteristics:
(a)unit resolution for atomic mass unit greater than 320;
(b)ion sources constructed of or lined with nichrome or monel or nickel plated;
(c)electron bombardment ionization sources; and
(d)having a collector system suitable for isotopic analysis.

A.2.4.2.4.Frequency changers
Frequency changers (also known as converters or invertors) especially designed or prepared to supply motor stators as defined in paragraph A.2.4.1.2.(d), or parts, components and sub-assemblies of such frequency changers having all of the following characteristics:
(a)a multiphase output of 600 Hz to 2 000 Hz;
(b)high stability (with frequency control better than 0.1%);
(c)low harmonic distortion (less than 2%); and
(d)an efficiency of greater than 80%.

A.2.4.3.Especially designed or prepared assemblies and components for use in gaseous diffusion enrichment, including:

A.2.4.3.1.Gaseous diffusion barriers
(a)especially designed or prepared thin, porous filters, with a pore size of 100 Å to 1 000 Å (angstroms), a thickness of 5 mm (0.2 in.) or less, and for tubular forms, a diameter of 25 mm (1 in.) or less, made of metallic, polymer or ceramic materials resistant to corrosion by UF₆; and
(b)especially prepared compounds or powders for the manufacture of such filters. Such compounds and powders include nickel or alloys containing 60% or more nickel, aluminium oxide, or UF₆-resistant fully fluorinated hydrocarbon polymers having a purity of 99.9% or more, a particle size less than 10 microns, and a high degree of particle size uniformity, which are especially prepared for the manufacture of gaseous diffusion barriers.

A.2.4.3.2.Diffuser housings
Especially designed or prepared hermetically sealed cylindrical vessels greater than 300 mm (12 in.) in diameter and greater than 900 mm (35 in.) in length, or rectangular vessels of comparable dimensions, which have an inlet connection and two outlet connections all of which are greater than 50 mm (2 in.) in diameter, for containing the gaseous diffusion barrier, made of or lined with UF₆-resistant materials and designed for horizontal or vertical installation.

A.2.4.3.3.Compressors and gas blowers
Especially designed or prepared axial, centrifugal, or positive displacement compressors, or gas blowers with a suction volume capacity of 1 m³/min or more of UF₆, and with a discharge pressure of up to several hundred kPa (100 psi), designed for long-term operation in the UF₆ environment with or without an electrical motor of appropriate power, as well as separate assemblies of such compressors and gas blowers. These compressors and gas blowers have a pressure ratio between 2:1 and 6:1 and are made of, or lined with, materials resistant to UF₆.

A.2.4.3.4.Rotary shaft seals
Especially designed or prepared vacuum seals, with seal feed and seal exhaust connections, for sealing the shaft connecting the compressor or the gas blower rotor with the driver motor so as to ensure a reliable seal against in-leaking of air into the inner chamber of the compressor or gas blower which is filled with UF₆. Such seals are normally designed for a buffer gas in-leakage rate of less than 1 000 cm³/min (60 in.³/min).

A.2.4.3.5.Heat exchangers for cooling UF₆
Especially designed or prepared heat exchangers made of or lined with UF₆-resistant materials (except stainless steel) or with copper or any combination of those metals, and intended for a leakage pressure change rate of less than 10 Pa/h (0.0015 psi/h) under a pressure difference of 100 kPa (15 psi).

A.2.4.4.Especially designed or prepared auxiliary systems, equipment and components for use in gaseous diffusion enrichment, including:

A.2.4.4.1.Feed systems/product and tails withdrawal systems
Especially designed or prepared process systems, capable of operating at pressures of 300 kPa (45 psi) or less, including:
(a)feed autoclaves (or systems) used for passing UF₆ to the gaseous diffusion cascades;
(b)desublimers (or cold traps) used to remove UF₆ from diffusion cascades;
(c)liquefaction stations where UF₆ gas from the cascade is compressed and cooled to form liquid UF₆; and
(d)product or tails stations used for transferring UF₆ into containers.

A.2.4.4.2.Header piping systems
Especially designed or prepared piping systems and header systems for handling UF₆ within the gaseous diffusion cascades. This piping network is normally of the double header system with each cell connected to each of the headers.

A.2.4.4.3.Vacuum systems
(a)especially designed or prepared large vacuum manifolds, vacuum headers and vacuum pumps having a suction capacity of 5 m³/min (175 ft.³/min) or more; and
(b)vacuum pumps especially designed for service in UF₆-bearing atmospheres made of, or lined with, aluminium, nickel, or alloys bearing more than 60% nickel. These pumps may be either rotary or positive, may have displacement and fluorocarbon seals, and may have special working fluids present.

A.2.4.4.4.Special shut-off and control valves
Especially designed or prepared manual or automated shut-off and control bellows valves made of UF₆-resistant materials with a diameter of 40 mm to 1 500 mm (1.5 in. to 59 in.) for installation in main and auxiliary systems of gaseous diffusion enrichment plants.

A.2.4.4.5.UF₆ mass spectrometers/ion sources
Especially designed or prepared magnetic or quadrupole mass spectrometers capable of taking on-line samples of feed, product or tails, from UF₆ gas streams and having all of the following characteristics:
(a)resolution for atomic mass unit greater than 320;
(b)ion sources constructed of or lined with nichrome or monel or nickel plated;
(c)electron bombardment ionization sources; and
(d)collector system suitable for isotopic analysis.

A.2.4.5.Especially designed or prepared systems, equipment and components for use in aerodynamic enrichment plants, including:

A.2.4.5.1.Separation nozzles
Especially designed or prepared separation nozzles and assemblies thereof. The separation nozzles consist of slit-shaped, curved channels having a radius of curvature less than 1 mm (typically 0.1 mm to 0.05 mm), resistant to corrosion by UF₆ and having a knife-edge within the nozzle that separates the gas flowing through the nozzle into two fractions.

A.2.4.5.2.Vortex tubes
Especially designed or prepared vortex tubes and assemblies thereof. The vortex tubes are cylindrical or tapered, made of or protected by materials resistant to corrosion by UF₆, having a diameter of between 0.5 cm and 4 cm, a length to diameter ratio of 20:1 or less and with one or more tangential inlets. The tubes may be equipped with nozzle-type appendages at either or both ends.

A.2.4.5.3.Compressors and gas blowers
Especially designed or prepared axial, centrifugal or positive displacement compressors or gas blowers made of or protected by materials resistant to corrosion by UF₆ and with a suction volume capacity of 2 m³/min or more of UF₆/carrier gas (hydrogen or helium) mixture.

A.2.4.5.4.Rotary shaft seals
Especially designed or prepared rotary shaft seals, with seal feed and seal exhaust connections, for sealing the shaft connecting the compressor rotor or the gas blower rotor with the driver motor so as to ensure a reliable seal against out-leakage of process gas or in-leakage of air or seal gas into the inner chamber of the compressor or gas blower which is filled with a UF₆/carrier gas mixture.

A.2.4.5.5.Heat exchangers for gas cooling
Especially designed or prepared heat exchangers made of or protected by materials resistant to corrosion by UF₆.

A.2.4.5.6.Separation element housings
Especially designed or prepared separation element housings, made of or protected by materials resistant to corrosion by UF₆, for containing vortex tubes or separation nozzles.

A.2.4.5.7.Feed systems/product and tails withdrawal systems
Especially designed or prepared process systems or equipment for enrichment plants made of or protected by materials resistant to corrosion by UF₆, including:
(a)feed autoclaves, ovens, or systems used for passing UF₆ to the enrichment process;
(b)desublimers (or cold traps) used to remove UF₆ from the enrichment process for subsequent transfer upon heating;
(c)solidification or liquefaction stations used to remove UF₆ from the enrichment process by compressing and converting UF₆ to a liquid or solid form; and
(d)product or tails stations used for transferring UF₆ into containers.

A.2.4.5.8.Header piping systems
Especially designed or prepared header piping systems, made of or protected by materials resistant to corrosion by UF₆, for handling UF₆ within the aerodynamic cascades. This piping network is normally of the double header design with each stage or group of stages connected to each of the headers.

A.2.4.5.9.Vacuum systems and pumps
(a)especially designed or prepared vacuum systems having a suction capacity of 5 m³/min or more, consisting of vacuum manifolds, vacuum headers and vacuum pumps, and designed for service in UF₆-bearing atmospheres; and
(b)vacuum pumps especially designed or prepared for service in UF₆-bearing atmospheres and made of or protected by materials resistant to corrosion by UF₆. These pumps may use fluorocarbon seals and special working fluids.

A.2.4.5.10. Special shut-off and control valves
Especially designed or prepared manual or automated shut-off and control bellows valves made of or protected by materials resistant to corrosion by UF₆ with a diameter of 40 mm to 1 500 mm for installation in main and auxiliary systems of aerodynamic enrichment plants.

A.2.4.5.11. UF₆ mass spectrometers/ion sources
Especially designed or prepared magnetic or quadrupole mass spectrometers capable of taking on-line samples of feed, product or tails, from UF₆ gas streams and having all of the following characteristics:
(a)unit resolution for mass greater than 320;
(b)ion sources constructed of or lined with nichrome or monel or nickel plated;
(c)electron bombardment ionization sources; and
(d)collector system suitable for isotopic analysis.

A.2.4.5.12. UF₆/carrier gas separation systems
Especially designed or prepared process systems for separating UF₆ from carrier gas (hydrogen or helium).

A.2.4.6.Especially designed or prepared systems, equipment and components for use in chemical exchange or ion exchange enrichment plants, including:

A.2.4.6.1.Liquid-liquid exchange columns (chemical exchange)
Countercurrent liquid-liquid exchange columns having mechanical power input (i.e., pulsed columns with sieve plates, reciprocating plate columns, and columns with internal turbine mixers), especially designed or prepared for uranium enrichment using the chemical exchange process. For corrosion resistance to concentrated hydrochloric acid solutions, these columns and their internals are made of or protected by suitable plastic materials (such as fluorocarbon polymers) or glass. The stage residence time of the columns is designed to be short (30 s or less).

A.2.4.6.2.Liquid-liquid centrifugal contactors (chemical exchange)
Liquid-liquid centrifugal contactors especially designed or prepared for uranium enrichment using the chemical exchange process. Such contactors use rotation to achieve dispersion of the organic and aqueous streams and then centrifugal force to separate the phases. For corrosion resistance to concentrated hydrochloric acid solutions, the contactors are made of or are lined with suitable plastic materials (such as fluorocarbon polymers) or are lined with glass. The stage residence time of the centrifugal contactors is designed to be short (30 s or less).

A.2.4.6.3.Uranium reduction systems and equipment (chemical exchange)
(a)especially designed or prepared electrochemical reduction cells to reduce uranium from one valence state to another for uranium enrichment using the chemical exchange process. The cell materials in contact with process solutions must be corrosion resistant to concentrated hydrochloric acid solutions; and
(b)especially designed or prepared systems at the product end of the cascade for taking the U⁺⁴ out of the organic stream, adjusting the acid concentration and feeding to the electrochemical reduction cells.

A.2.4.6.4.Feed preparation systems (chemical exchange)
Especially designed or prepared systems for producing high-purity uranium chloride feed solutions for chemical exchange uranium isotope separation plants.

A.2.4.6.5.Uranium oxidation systems (chemical exchange)
Especially designed or prepared systems for oxidation of U⁺³ to U⁺⁴ for return to the uranium isotope separation cascade in the chemical exchange enrichment process.

A.2.4.6.6.Fast-reacting ion exchange resins/adsorbents (ion exchange)
Fast-reacting ion-exchange resins or adsorbents especially designed or prepared for uranium enrichment using the ion exchange process, including porous macroreticular resins, and pellicular structures in which the active chemical exchange groups are limited to a coating on the surface of an inactive porous support structure, and other composite structures in any suitable form including particles or fibres. These ion exchange resins/adsorbents have diameters of 0.2 mm or less and must be chemically resistant to concentrated hydrochloric acid solutions as well as physically strong enough so as not to degrade in the exchange columns. The resins/adsorbents are especially designed to achieve very fast uranium isotope exchange kinetics (exchange rate half-time of less than 10 s) and are capable of operating at a temperature in the range of 100°C to 200°C.

A.2.4.6.7.Ion exchange columns (ion exchange)
Cylindrical columns greater than 1 000 mm in diameter for containing and supporting packed beds of ion exchange resin/adsorbent, especially designed or prepared for uranium enrichment using the ion exchange process. These columns are made of or protected by materials (such as titanium or fluorocarbon plastics) resistant to corrosion by concentrated hydrochloric acid solutions and are capable of operating at a temperature in the range of 100°C to 200°C and pressures above 0.7 MPa (102 psi).

A.2.4.6.8.Ion exchange reflux systems (ion exchange)
(a)especially designed or prepared chemical or electrochemical reduction systems for regeneration of the chemical reducing agent(s) used in ion exchange uranium enrichment cascades; and
(b)especially designed or prepared chemical or electrochemical oxidation systems for regeneration of the chemical oxidizing agent(s) used in ion exchange uranium enrichment cascades.

A.2.4.7.Especially designed or prepared systems, equipment and components for use in laser-based enrichment plants, including:

A.2.4.7.1.Uranium vaporization systems (AVLIS)
Especially designed or prepared uranium vaporization systems which contain high-power strip or scanning electron beam guns with a delivered power on the target of more than 2.5 kW/cm.

A.2.4.7.2.Liquid uranium metal handling systems (AVLIS)
Especially designed or prepared liquid metal handling systems for molten uranium or uranium alloys, consisting of crucibles and cooling equipment for the crucibles.

A.2.4.7.3.Uranium metal product and tails collector assemblies (AVLIS)
Especially designed or prepared product and tails collector assemblies for uranium metal in liquid or solid form.

A.2.4.7.4.Separator module housings (AVLIS)
Especially designed or prepared cylindrical or rectangular vessels for containing the uranium metal vapour source, the electron beam gun, and the product and tails collectors.

A.2.4.7.5.Supersonic expansion nozzles (MLIS)
Especially designed or prepared supersonic expansion nozzles for cooling mixtures of UF₆ and carrier gas to 150 K or less and which are corrosion resistant to UF₆.

A.2.4.7.6.Uranium pentafluoride product collectors (MLIS)
Especially designed or prepared uranium pentafluoride (UF₅) solid product collectors consisting of filter, impact, or cyclone-type collectors, or combinations thereof, and which are corrosion resistant to the UF₅/UF₆ environment.

A.2.4.7.7.UF₆/carrier gas compressors (MLIS)
Especially designed or prepared compressors for UF₆/carrier gas mixtures, designed for long-term operation in a UF₆ environment. The components of these compressors that come into contact with process gas are made of or protected by materials resistant to corrosion by UF₆.

A.2.4.7.8.Rotary shaft seals (MLIS)
Especially designed or prepared rotary shaft seals, with seal feed and seal exhaust connections, for sealing the shaft connecting the compressor rotor with the driver motor so as to ensure a reliable seal against out-leakage of process gas or in-leakage of air or seal gas into the inner chamber of the compressor which is filled with a UF₆/carrier gas mixture.

A.2.4.7.9.Fluorination systems (MLIS)
Especially designed or prepared systems for fluorinating UF₅ (solid) to UF₆ (gas).

A.2.4.7.10. UF₆ mass spectrometers/ion sources (MLIS)
Especially designed or prepared magnetic or quadrupole mass spectrometers capable of taking on-line samples of feed, product or tails, from UF₆ gas streams and having all of the following characteristics:
(a)unit resolution for mass greater than 320;
(b)ion sources constructed of or lined with nichrome or monel or nickel plated;
(c)electron bombardment ionization sources; and
(d)collector system suitable for isotopic analysis.

A.2.4.7.11. Feed systems/product and tails withdrawal systems (MLIS)
Especially designed or prepared process systems or equipment for enrichment plants made of or protected by materials resistant to corrosion by UF₆, including:
(a)feed autoclaves, ovens, or systems used for passing UF₆ to the enrichment process;
(b)desublimers (or cold traps) used to remove UF₆ from the enrichment process for subsequent transfer upon heating;
(c)solidification or liquefaction stations used to remove UF₆ from the enrichment process by compressing and converting UF₆ to a liquid or solid form; and
(d)product or tails stations used for transferring UF₆ into containers.

A.2.4.7.12. UF₆/carrier gas separation systems (MLIS)
Especially designed or prepared process systems for separating UF₆ from carrier gas. The carrier gas may be nitrogen, argon, or other gas.

A.2.4.7.13. Laser systems (AVLIS, MLIS and CRISLA)
Lasers or laser systems especially designed or prepared for the separation of uranium isotopes.

A.2.4.8.Especially designed or prepared systems, equipment and components for use in plasma separation enrichment plants, including:

A.2.4.8.1.Microwave power sources and antennae
Especially designed or prepared microwave power sources and antennae for producing or accelerating ions and having the following characteristics: greater than 30 GHz frequency and greater than 50 kW mean power output for ion production.

A.2.4.8.2.Ion excitation coils
Especially designed or prepared radio frequency ion excitation coils for frequencies of more than 100 kHz and capable of handling more than 40 kW mean power.

A.2.4.8.3.Uranium plasma generation systems
Especially designed or prepared systems for the generation of uranium plasma, which may contain high-power strip or scanning electron beam guns with a delivered power on the target of more than 2.5 kW/cm.

A.2.4.8.4.Liquid uranium metal handling systems
Especially designed or prepared liquid metal handling systems for molten uranium or uranium alloys, consisting of crucibles and cooling equipment for the crucibles.

A.2.4.8.5.Uranium metal product and tails collector assemblies
Especially designed or prepared product and tails collector assemblies for uranium metal in solid form. These collector assemblies are made of or protected by materials resistant to the heat and corrosion of uranium metal vapour, such as yttria-coated graphite or tantalum.

A.2.4.8.6.Separator module housings
Cylindrical vessels especially designed or prepared for use in plasma separation enrichment plants for containing the uranium plasma source, radio-frequency drive coil and the product and tails collectors.

A.2.4.9.Especially designed or prepared systems, equipment and components for use in electromagnetic enrichment plants, including:

A.2.4.9.1.Electromagnetic isotope separators
Electromagnetic isotope separators especially designed or prepared for the separation of uranium isotopes, and equipment and components therefor, including:
(a)ion sources:
especially designed or prepared single or multiple uranium ion sources consisting of a vapour source, ionizer, and beam accelerator, constructed of suitable materials such as graphite, stainless steel, or copper, and capable of providing a total ion beam current of 50 mA or greater;
(b)ion collectors:
collector plates consisting of two or more slits and pockets especially designed or prepared for collection of enriched and depleted uranium ion beams and constructed of suitable materials such as graphite or stainless steel;
(c)vacuum housings:
especially designed or prepared vacuum housings for uranium electromagnetic separators, constructed of suitable non-magnetic materials such as stainless steel and designed for operation at pressures of 0.1 Pa or lower; and
(d)magnet pole pieces:
especially designed or prepared magnet pole pieces having a diameter greater than 2 m used to maintain a constant magnetic field within an electromagnetic isotope separator and to transfer the magnetic field between adjoining separators.

A.2.4.9.2.High voltage power supplies
Especially designed or prepared high-voltage power supplies for ion sources, having all of the following characteristics: capable of continuous operation, output voltage of 20 000 V or greater, output current of 1 A or greater, and voltage regulation of better than 0.01% over a time period of 8 hours.

A.2.4.9.3.Magnet power supplies
Especially designed or prepared high-power, direct current magnet power supplies having all of the following characteristics: capable of continuously producing a current output of 500 A or greater at a voltage of 100 V or greater and with a current or voltage regulation better than 0.01% over a period of 8 hours.

A.2.5.Plants for the production or concentration of heavy water, deuterium and deuterium compounds and equipment especially designed or prepared therefor, including:

A.2.5.1.Water-hydrogen sulphide exchange towers
Exchange towers fabricated from fine carbon steel (such as ASTM A516) with diameters of 6 m (20 ft.) to 9 m (30 ft.), capable of operating at pressures greater than or equal to 2 MPa (300 psi) and with a corrosion allowance of 6 mm or greater, especially designed or prepared for heavy water production utilizing the water-hydrogen sulphide exchange process.

A.2.5.2.Blowers and compressors
Single stage, low head (i.e., 0.2 MPa or 30 psi) centrifugal blowers or compressors for hydrogen-sulphide gas circulation (i.e., gas containing more than 70% H₂S) especially designed or prepared for heavy water production utilizing the water-hydrogen sulphide exchange process. These blowers or compressors have a throughput capacity greater than or equal to 56 m³/s (120,000 SCFM) while operating at pressures greater than or equal to 1.8 MPa (260 psi) suction and have seals designed for wet H₂S service.

A.2.5.3.Ammonia-hydrogen exchange towers
Ammonia-hydrogen exchange towers greater than or equal to 35 m (114.3 ft.) in height with diameters of 1.5 m (4.9 ft.) to 2.5 m (8.2 ft.) capable of operating at pressures greater than 15 MPa (2,225 psi) especially designed or prepared for heavy water production utilizing the ammonia-hydrogen exchange process. These towers also have at least one flanged, axial opening of the same diameter as the cylindrical part through which the tower internals can be inserted or withdrawn.

A.2.5.4.Tower internals and stage pumps
Tower internals and stage pumps especially designed or prepared for towers for heavy water production utilizing the ammonia-hydrogen exchange process. Tower internals include especially designed stage contactors which promote intimate gas/liquid contact. Stage pumps include especially designed submersible pumps for circulation of liquid ammonia within a contacting stage internal to the stage towers.

A.2.5.5.Ammonia crackers
Ammonia crackers with operating pressures greater than or equal to 3 MPa (450 psi) especially designed or prepared for heavy water production utilizing the ammonia-hydrogen exchange process.

A.2.5.6.Infrared absorption analyzers
Infrared absorption analyzers capable of on-line hydrogen/deuterium ratio analysis where deuterium concentrations are equal to or greater than 90%.

A.2.5.7.Catalytic burners
Catalytic burners for the conversion of enriched deuterium gas into heavy water especially designed or prepared for heavy water production utilizing the ammonia-hydrogen exchange process.

A.2.5.8.Complete heavy water upgrade systems or columns therefor
Complete heavy water upgrade systems, or columns therefor, especially designed or prepared for the upgrade of heavy water to reactor-grade deuterium concentration.

A.2.6.Plants for the conversion of uranium and equipment especially designed or prepared therefor, including:

A.2.6.1.Especially designed or prepared systems for the conversion of uranium ore concentrates to UO₃.

A.2.6.2.Especially designed or prepared systems for the conversion of UO₃ to UF₆.

A.2.6.3.Especially designed or prepared systems for the conversion of UO₃ to UO₂.

A.2.6.4.Especially designed or prepared systems for the conversion of UO₂ to UF₄.

A.2.6.5.Especially designed or prepared systems for the conversion of UF₄ to UF₆.

A.2.6.6.Especially designed or prepared systems for the conversion of UF₄ to U metal.

A.2.6.7.Especially designed or prepared systems for the conversion of UF₆ to UO₂.

A.2.6.8.Especially designed or prepared systems for the conversion of UF₆ to UF₄.

A.4.1. Technology
Technical data including, but not limited to, technical drawings, models, photographic negatives and prints, recordings, design data and technical and operating manuals whether in written form or recorded on other media or devices such as disk, tape and read-only memories for the design, production, construction, operation or maintenance of any item in Part A of this schedule, except data available to the public (e.g. in published books or periodicals, or that which has been made available without restrictions upon its further dissemination).