0B004Plant for the production or concentration of heavy water, deuterium and deuterium compounds and specially designed or prepared equipment and components therefor, as follows:

a. Plant for the production of heavy water, deuterium or deuterium compounds, as follows:
1. Water-hydrogen sulphide exchange plants;
2. Ammonia-hydrogen exchange plants;
3. Combined Electrolysis and Catalytic Exchange (CECE) plants;
4. Combined Industrial Reforming and Catalytic Exchange (CIRCE) plants;
5. Bithermal Hydrogen-Water exchange (BHW) plants;
b. Equipment and components, as follows:
1. Water-hydrogen sulphide exchange towers with diameters of 1,5 m or more, capable of operating at pressures greater than or equal to 2 MPa;
2. Single stage, low head (i.e., 0,2 MPa) centrifugal blowers or compressors for hydrogen sulphide gas circulation (i.e., gas containing more than 70 % by weight hydrogen sulphide, H2S) with a throughput capacity greater than or equal to 5 m3/s when operating at pressures greater than or equal to 1,8 MPa suction and having seals designed for wet H2S service;
3. Ammonia-hydrogen exchange towers greater than or equal to 35 m in height with diameters of 1,5 m or greater capable of operating at pressures greater than 15 MPa;
4. Tower internals, including stage contactors, and stage pumps, including those which are submersible, for heavy water production utilising the ammonia-hydrogen exchange process;
5. Ammonia crackers with operating pressures greater than or equal to 3 MPa for heavy water production utilising the ammonia-hydrogen exchange process;
6. Not used;
7. Catalytic burners for the conversion of enriched deuterium gas into heavy water utilising the ammonia-hydrogen exchange process;
8. Complete heavy water finishing units, upgrade systems, or columns with diameters of 0.1 m or greater therefor, for the upgrade of heavy water to reactor-grade deuterium concentration;
9. Ammonia synthesis converters or synthesis units specially designed or prepared for heavy water production utilising the ammonia-hydrogen exchange process.
10. Complete columns or towers specially designed or prepared for hydrogen isotope exchange having all of the following:
1. Packed with random or structured wet-proofed platinised catalysts;
2. Constructed of carbon steel or stainless steel;
3. Capable of operating with pressure in the range of 0.1 to 4 MPa; and
4. Capable of operating at temperatures in the range of 293 K (20 °C) to 473 K (200 °C).