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EU Code

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• Catalytic BurnersCatalytic burners for the conversion of enriched deuterium gas into heavy water especially designed or prepared for heavy water production utilizing the ammoniahydrogen exchange process.
• Ammonia CrackersAmmonia crackers with operating pressures greater than or equal to 3 MPa (450 psi) especially designed or prepared for heavy water production utilizing the ammoniahydrogen exchange process.
• Infrared Absorption AnalyzersInfrared absorption analyzers capable of “on-line” hydrogen/deuterium ratio analysis where deuterium concentrations are equal to or greater than 90 %.
• Water — Hydrogen Sulphide Exchange Towers Exchange towers with diameters of 1,5 m or greater and capable of operating at pressures greater than or equal to 2 MPa (300 psi), especially designed or prepared for heavy water production utilizing the water-hydrogen sulphide exchange process.
• Ammonia synthesis converters or synthesis unitsAmmonia synthesis converters or synthesis units especially designed or prepared for heavy water production utilizing the ammonia-hydrogen exchange process.EXPLANATORY NOTE These converters or units take synthesis gas (nitrogen and hydrogen) from an ammonia/hydrogen high-pressure exchange column (or columns), and the synthesized ammonia is returned to the exchange column (or columns).
• Tower Internals and Stage PumpsTower 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.
• Complete heavy water upgrade systems or columns thereforComplete heavy water upgrade systems, or columns therefor, especially designed or prepared for the upgrade of heavy water to reactor-grade deuterium concentration.EXPLANATORY NOTE These systems, which usually employ water distillation to separate heavy water from light water, are especially designed or prepared to produce reactor-grade heavy water (i.e., typically 99,75 % deuterium oxide) from heavy water feedstock of lesser concentration.
• Ammonia-Hydrogen Exchange TowersAmmonia-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.
• Blowers and CompressorsSingle 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/second (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.