- List
- NSG – Nuclear-related dual-use equipment, materials, software and related technology (Part 2) – INFCIRC/254/Rev.13/Part 2
6-4
Explanation and Comparison Table of Changes - Guidelines for Transfers of Nuclear-Related Dual-Use Equipment,
Materials, Software, and Related Technology (NSG Part 2 Guidelines)
| Old (Revision 12) | New (Revision 13) | Reason for Amendment |
| 2.A.2. Platinised catalysts | 2.A.2. Platinised catalysts | This amendment captures tritium removal from both water and heavy water (upgraders) and clarifies that the controlled platinised catalysts are wet-proofed. These changes reduce the scope of the control and only captures platinised catalysts used in hydrogen isotope exchange reactions for the recovery of tritium and for the production or upgrading of heavy water. |
| | | |
| 2.A.2. Platinised catalysts specially designed or prepared for promoting the hydrogen isotope exchange reaction between hydrogen and water for the recovery of tritium from heavy water or for the production of heavy water. | 2.A.2. Wet-proofed ~~P~~platinised catalysts | |
| | | |
| | specially designed or prepared for promoting the hydrogen isotope exchange reaction between hydrogen and water for the recovery of tritium from ~~heavy~~ water or for the production or upgrading of heavy water. | |
| | | |
| | Technical Note: In heavy water moderated reactors, upgraders maintain the heavy water concentration in the reactor core. Wetproofed platinised catalysts can also be used to upgrade heavy water. | |
| 2.A.3. Composite Structures in the Form of Tubes | 2.A.3. Composite Structures in the Form of Tubes | This amendment increases the range of diameters of composite structures in the form of tubes to be consistent with changes made during the Dedicated Meeting of Technical Experts (DMTE) (2010-2013) and during the 2022 Plenary. |
| | | |
| 2.A.3. Composite structures in the form of tubes having both of the following characteristics: | 2.A.3. Composite structures in the form of thin-walled tubes having ~~both~~ all of the following characteristics: | As a result of a complete revision of both NSG lists in 2010-2013, completed by the DMTE, the |
| | | |
| a. An inside diameter of between 75 and 400 mm; and | a. An inside diameter of between 75 and ~~400~~ 650 mm; ~~and~~ | |
| | | |
| b. Made with any of the “fibrous or filamentary materials” specified in | b. A thickness of 12 mm or less; and | |
| Item 2.C.7.a. or carbon prepreg materials specified in Item 2.C.7.c. | ~~b.~~ c. Made with any of the “fibrous or filamentary materials” specified in Item 2.C.7.a. or carbon prepreg materials specified in Item 2.C.7.c. | maximum diameter of gas centrifuges was changed from 400 mm to 650 mm in Sections 5.1, 5.1.1 of Annex B of the Part 1 Guidelines. |
| | | |
| | | This amendment ensures the coverage of composite structures in the form of tubes that can be used for gas centrifuge rotors are harmonized with the control parameters of the centrifuges. In addition, a new thickness parameter of 12 mm has also been added to only control thinwalled tubes. |
| 4.A.3. Turboexpanders or turboexpandercompressor sets having both of the following characteristics: | 4.A.3. Turboexpanders or turboexpandercompressor sets having both of the following characteristics: | This amendment decreases the outlet temperature range of turboexpanders to reflect actual operational temperatures. Helium gas was also added. |
| | | |
| a. Designed for operation with an outlet temperature of 35 K (-238 ºC) or less; and | a. Designed for operation with an outlet temperature ~~of~~ in the range 15K (-258 ºC) to 35 K (-238 ºC) ~~or~~ ~~less~~; and | |
| | | |
| b. Designed for a throughput of hydrogen gas of 1000 kg/h or greater. | b. Designed for a throughput of hydrogen or helium gas of 1000 kg/h or greater. | |
| 4.B.2 Hydrogen-cryogenic distillation columns | 4.B.2 Hydrogen-cryogenic distillation columns | This amendment was made to account for new heavy water production techniques and to update some control parameters. |
| | | |
| 4.B.2. Hydrogen-cryogenic distillation columns having all of the following characteristics: | 4.B.2. Hydrogen-cryogenic distillation columns having all of the following characteristics: | Specifically, the new text amends the outlet temperatures and the internal pressure range along with |
| | | |
| | a. Designed for operation at internal temperatures ~~of~~ in the range of 15 | |
| a. Designed for operation at internal temperatures of 35 K (-238 ºC) or less; | K (-258 ºC) to 35 K (-238 ºC)~~or~~ ~~less~~; | clarifying the materials of construction. |
| | | |
| b. Designed for operation at internal pressures of 0.5 to 5 MPa; | b. Designed for operation at internal pressures in the range of ~~0.5 to 5~~ | Additionally, a new technical note 2 was added to provide examples of equivalent materials of construction that are both cryogenic and hydrogen compatible within the updated temperature range. |
| | | |
| c. Constructed of either: | 0.1 MPa to 1 MPa; | |
| | | |
| 1. Stainless steel of the Society of | c. Constructed of either: | |
| | | |
| Automotive Engineers | 1. Austenitic ~~S~~stainless steel ~~of~~ ~~the Society of Automotive~~ ~~Engineers International (SAE)~~ ~~300 series with low sulphur~~ ~~content and with an austenitic~~ ~~ASTM (or equivalent standard)~~ ~~grain size number of 5 or~~ ~~greater~~; or | |
| | | |
| International (SAE) 300 series with low sulphur content and with an austenitic ASTM (or equivalent standard) grain size number of 5 or greater; or | 2. Equivalent materials which are both cryogenic and hydrogen (H₂)-compatible between 15 K (-258 ºC) and 35 K (-238 ºC); and | |
| | | |
| 2. Equivalent materials which are both cryogenic and hydrogen | d. With internal diameters of 30 cm or greater and ‘effective lengths’ of 4 m or greater. | |
| | | |
| (H₂)-compatible; and | Technical Notes: 1. The term | |
| | | |
| d. With internal diameters of 30 cm or greater and ‘effective lengths’ of 4 m or greater. | ‘effective length’ means the active height of packing material in a packed-type column, or the active height of internal contactor | |
| | | |
| Technical Note: The term ‘effective | | |
| | | |
| length’ means the active height of packing material in a packed-type column, or the | | |
| | active height of internal contactor plates in a plate-type column. | | plates in a platetype column. | |
| | | | | |
| | | | 2. Equivalent materials could include, but are not limited to the following materials: | |
| | | | | |
| | | | a. aluminium; | |
| | | | | |
| | | | b. aluminium alloys; | |
| | | | | |
| | | | c. copper alloys; | |
| | | | | |
| | | | d. nickel alloys; and | |
| | | | | |
| | | | e. titanium alloys. | |
| 5.B.5. | Specialised instrumentation for hydrodynamic experiments, as follows: | 5.B.5. | Specialised instrumentation for hydrodynamic experiments, as follows: | This amendment clarifies that microwave velocity interferometers are to be controlled by the velocity interferometer entry in 5.B.5.a. |
| | | | | |
| | a. Velocity interferometers for measuring velocities exceeding 1 km/s during time intervals of less than 10 µs; | | a. Velocity interferometers for measuring velocities exceeding 1 km/s during time intervals of less than 10 µs; | It eliminates a possible control loophole that may allow proliferators access to systems and techniques suitable for carrying out hydrodynamic experiments for weapons applications. |
| | | | | |
| | b. Shock pressure gauges capable of measuring pressures greater than 10 GPa, including gauges made with manganin, ytterbium, and polyvinylidene fluoride (PVDF) / polyvinyl difluoride (PVF₂); | | b. Shock pressure gauges capable of measuring pressures greater than 10 GPa, including gauges made with manganin, ytterbium, and polyvinylidene fluoride (PVDF) / polyvinyl difluoride (PVF₂); | |
| | | | | |
| | c. Quartz pressure transducers for pressures greater than 10 GPa. | | c. Quartz pressure transducers for pressures greater than 10 GPa. | |
| Note: Item 5.B.5.a. includes velocity interferometers such as | | Note: Item 5.B.5.a. includes velocity interferometers such as | | |
| | | | | |
| VISARs (Velocity | | VISARs (Velocity | | |
| | | | | |
| Interferometer Systems for Any | | Interferometer Systems for Any | | |
| | | | | |
| Reflector), DLIs (Doppler | | Reflector), DLIs (Doppler | | |
| | | | | |
| Laser Interferometers) and | | Laser Interferometers) and | | |
| | | | | |
| PDV (Photonic Doppler | | PDV (Photonic Doppler | | |
| | | | | |
| Velocimeters) also known as Het-V (Heterodyne Velocimeters). | | Velocimeters) also known as | | |
| | | | | |
| | | Het-V (Heterodyne | | |
| | | | | |
| | | Velocimeters) and microwave velocity interferometers including optic-microwave mixing velocimeters. | | |
[1] The European Commission and the Chair of the Zangger Committee participate as observers.
Explanation and Comparison Table of Changes - Guidelines for Transfers of Nuclear-Related Dual-Use Equipment,
Materials, Software, and Related Technology (NSG Part 2 Guidelines)
| Old (Revision 12) | New (Revision 13) | Reason for Amendment |
| 2.A.2. Platinised catalysts | 2.A.2. Platinised catalysts | This amendment captures tritium removal from both water and heavy water (upgraders) and clarifies that the controlled platinised catalysts are wet-proofed. These changes reduce the scope of the control and only captures platinised catalysts used in hydrogen isotope exchange reactions for the recovery of tritium and for the production or upgrading of heavy water. |
| | | |
| 2.A.2. Platinised catalysts specially designed or prepared for promoting the hydrogen isotope exchange reaction between hydrogen and water for the recovery of tritium from heavy water or for the production of heavy water. | 2.A.2. Wet-proofed ~~P~~platinised catalysts | |
| | | |
| | specially designed or prepared for promoting the hydrogen isotope exchange reaction between hydrogen and water for the recovery of tritium from ~~heavy~~ water or for the production or upgrading of heavy water. | |
| | | |
| | Technical Note: In heavy water moderated reactors, upgraders maintain the heavy water concentration in the reactor core. Wetproofed platinised catalysts can also be used to upgrade heavy water. | |
| 2.A.3. Composite Structures in the Form of Tubes | 2.A.3. Composite Structures in the Form of Tubes | This amendment increases the range of diameters of composite structures in the form of tubes to be consistent with changes made during the Dedicated Meeting of Technical Experts (DMTE) (2010-2013) and during the 2022 Plenary. |
| | | |
| 2.A.3. Composite structures in the form of tubes having both of the following characteristics: | 2.A.3. Composite structures in the form of thin-walled tubes having ~~both~~ all of the following characteristics: | As a result of a complete revision of both NSG lists in 2010-2013, completed by the DMTE, the |
| | | |
| a. An inside diameter of between 75 and 400 mm; and | a. An inside diameter of between 75 and ~~400~~ 650 mm; ~~and~~ | |
| | | |
| b. Made with any of the “fibrous or filamentary materials” specified in | b. A thickness of 12 mm or less; and | |
| Item 2.C.7.a. or carbon prepreg materials specified in Item 2.C.7.c. | ~~b.~~ c. Made with any of the “fibrous or filamentary materials” specified in Item 2.C.7.a. or carbon prepreg materials specified in Item 2.C.7.c. | maximum diameter of gas centrifuges was changed from 400 mm to 650 mm in Sections 5.1, 5.1.1 of Annex B of the Part 1 Guidelines. |
| | | |
| | | This amendment ensures the coverage of composite structures in the form of tubes that can be used for gas centrifuge rotors are harmonized with the control parameters of the centrifuges. In addition, a new thickness parameter of 12 mm has also been added to only control thinwalled tubes. |
| 4.A.3. Turboexpanders or turboexpandercompressor sets having both of the following characteristics: | 4.A.3. Turboexpanders or turboexpandercompressor sets having both of the following characteristics: | This amendment decreases the outlet temperature range of turboexpanders to reflect actual operational temperatures. Helium gas was also added. |
| | | |
| a. Designed for operation with an outlet temperature of 35 K (-238 ºC) or less; and | a. Designed for operation with an outlet temperature ~~of~~ in the range 15K (-258 ºC) to 35 K (-238 ºC) ~~or~~ ~~less~~; and | |
| | | |
| b. Designed for a throughput of hydrogen gas of 1000 kg/h or greater. | b. Designed for a throughput of hydrogen or helium gas of 1000 kg/h or greater. | |
| 4.B.2 Hydrogen-cryogenic distillation columns | 4.B.2 Hydrogen-cryogenic distillation columns | This amendment was made to account for new heavy water production techniques and to update some control parameters. |
| | | |
| 4.B.2. Hydrogen-cryogenic distillation columns having all of the following characteristics: | 4.B.2. Hydrogen-cryogenic distillation columns having all of the following characteristics: | Specifically, the new text amends the outlet temperatures and the internal pressure range along with |
| | | |
| | a. Designed for operation at internal temperatures ~~of~~ in the range of 15 | |
| a. Designed for operation at internal temperatures of 35 K (-238 ºC) or less; | K (-258 ºC) to 35 K (-238 ºC)~~or~~ ~~less~~; | clarifying the materials of construction. |
| | | |
| b. Designed for operation at internal pressures of 0.5 to 5 MPa; | b. Designed for operation at internal pressures in the range of ~~0.5 to 5~~ | Additionally, a new technical note 2 was added to provide examples of equivalent materials of construction that are both cryogenic and hydrogen compatible within the updated temperature range. |
| | | |
| c. Constructed of either: | 0.1 MPa to 1 MPa; | |
| | | |
| 1. Stainless steel of the Society of | c. Constructed of either: | |
| | | |
| Automotive Engineers | 1. Austenitic ~~S~~stainless steel ~~of~~ ~~the Society of Automotive~~ ~~Engineers International (SAE)~~ ~~300 series with low sulphur~~ ~~content and with an austenitic~~ ~~ASTM (or equivalent standard)~~ ~~grain size number of 5 or~~ ~~greater~~; or | |
| | | |
| International (SAE) 300 series with low sulphur content and with an austenitic ASTM (or equivalent standard) grain size number of 5 or greater; or | 2. Equivalent materials which are both cryogenic and hydrogen (H₂)-compatible between 15 K (-258 ºC) and 35 K (-238 ºC); and | |
| | | |
| 2. Equivalent materials which are both cryogenic and hydrogen | d. With internal diameters of 30 cm or greater and ‘effective lengths’ of 4 m or greater. | |
| | | |
| (H₂)-compatible; and | Technical Notes: 1. The term | |
| | | |
| d. With internal diameters of 30 cm or greater and ‘effective lengths’ of 4 m or greater. | ‘effective length’ means the active height of packing material in a packed-type column, or the active height of internal contactor | |
| | | |
| Technical Note: The term ‘effective | | |
| | | |
| length’ means the active height of packing material in a packed-type column, or the | | |
| | active height of internal contactor plates in a plate-type column. | | plates in a platetype column. | |
| | | | | |
| | | | 2. Equivalent materials could include, but are not limited to the following materials: | |
| | | | | |
| | | | a. aluminium; | |
| | | | | |
| | | | b. aluminium alloys; | |
| | | | | |
| | | | c. copper alloys; | |
| | | | | |
| | | | d. nickel alloys; and | |
| | | | | |
| | | | e. titanium alloys. | |
| 5.B.5. | Specialised instrumentation for hydrodynamic experiments, as follows: | 5.B.5. | Specialised instrumentation for hydrodynamic experiments, as follows: | This amendment clarifies that microwave velocity interferometers are to be controlled by the velocity interferometer entry in 5.B.5.a. |
| | | | | |
| | a. Velocity interferometers for measuring velocities exceeding 1 km/s during time intervals of less than 10 µs; | | a. Velocity interferometers for measuring velocities exceeding 1 km/s during time intervals of less than 10 µs; | It eliminates a possible control loophole that may allow proliferators access to systems and techniques suitable for carrying out hydrodynamic experiments for weapons applications. |
| | | | | |
| | b. Shock pressure gauges capable of measuring pressures greater than 10 GPa, including gauges made with manganin, ytterbium, and polyvinylidene fluoride (PVDF) / polyvinyl difluoride (PVF₂); | | b. Shock pressure gauges capable of measuring pressures greater than 10 GPa, including gauges made with manganin, ytterbium, and polyvinylidene fluoride (PVDF) / polyvinyl difluoride (PVF₂); | |
| | | | | |
| | c. Quartz pressure transducers for pressures greater than 10 GPa. | | c. Quartz pressure transducers for pressures greater than 10 GPa. | |
| Note: Item 5.B.5.a. includes velocity interferometers such as | | Note: Item 5.B.5.a. includes velocity interferometers such as | | |
| | | | | |
| VISARs (Velocity | | VISARs (Velocity | | |
| | | | | |
| Interferometer Systems for Any | | Interferometer Systems for Any | | |
| | | | | |
| Reflector), DLIs (Doppler | | Reflector), DLIs (Doppler | | |
| | | | | |
| Laser Interferometers) and | | Laser Interferometers) and | | |
| | | | | |
| PDV (Photonic Doppler | | PDV (Photonic Doppler | | |
| | | | | |
| Velocimeters) also known as Het-V (Heterodyne Velocimeters). | | Velocimeters) also known as | | |
| | | | | |
| | | Het-V (Heterodyne | | |
| | | | | |
| | | Velocimeters) and microwave velocity interferometers including optic-microwave mixing velocimeters. | | |
[1] The European Commission and the Chair of the Zangger Committee participate as observers.