Commonwealth Numbered Regulations

1992 No. 83 CUSTOMS (PROHIBITED EXPORTS) REGULATIONS (AMENDMENT) - REG 2

  2.1   Item 25:

Omit the item, substitute:

"25

(1) Plants for the production of heavy water, deuterium or compounds
containing deuterium

(2) Equipment and materials suitable for plants in subitem (1), including:

   (a)  exchange towers that are:

        (i)    designed or prepared for production of heavy water by the water
               - hydrogen sulphide exchange process; and

        (ii)   fabricated from fine carbon steel with a corrosion allowance of
               at least 6 millimetres; and

        (iii)  between 6 and 9 metres (inclusive) in diameter; and

        (iv)   capable of operating at a pressure of at least 2 megapascals;
               and

   (b)  single stage, low head (0.2 megapascals) centrifugal blowers or
        compressors that:

        (i)    are designed or prepared for production of heavy water by the
               water - hydrogen sulphide exchange process; and

        (ii)   have a throughput capacity of at least 56 cubic metres per
               second at a pressure of at least 1.8 megapascals suction; and

        (iii)  have seals designed for wet hydrogen sulphide service; and

   (c)  ammonia - hydrogen exchange towers that are:

        (i)    designed or prepared for production of heavy water by the
               ammonia - hydrogen exchange process:

        (ii)   at least 35 metres in height; and

        (iii)  between 1.5 metres and 2.5 metres (inclusive) in diameter; and

        (iv)   capable of operating at a pressure greater than 15 megapascals;
               and

        (v)    made with at least one flanged axial opening, of the same
               diameter as the cylindrical part of the tower, for use in
               inserting and withdrawing tower internals; and

   (d)  tower internals and stage pumps designed or prepared for production of
        heavy water by the ammonia - hydrogen exchange process, including:

        (i)    stage contactors for use within an ammonia - hydrogen exchange
               tower to promote contact between liquid and gas; and

        (ii)   stage pumps for circulation of liquid ammonia; and

   (e)  ammonia crackers that:

        (i)    are designed or prepared for production of heavy water by the
               ammonia - hydrogen exchange process; and

        (ii)   have an operating pressure of at least 3 megapascals; and

   (f)  catalytic burners designed or prepared for production of heavy water
        by the ammonia - hydrogen exchange process by conversion of enriched
        deuterium gas to heavy water; and

   (g)  infrared absorption analysers capable of on-line analysis of the ratio
        of hydrogen to deuterium in a fluid with a deuterium concentration of
        at least 90%".