Browsing by Author "Gregory, JN"

Now showing 1 - 6 of 6
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    Evaluation of the use of gamma radiation in sewage treatment
    (Australian Atomic Energy Commission, 1974-12) Bonhote, PA; Clouston, JG; Ford, GWK; Gregory, JN
    Literature evaluating the potential use of gamma radiation for the treatment of sewage is critically reviewed. It is concluded that irradiation treatment cannot contribute significantly to the improvement of conventional processes for sewage water recovery. Irradiation methods at present have no cost or technical advantage, and no proven biological advantage over known treatment systems.
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    A five year programme for radioisotope production at the Research Establishment
    (Australian Atomic Energy Commission, 1966-11) Boyd, RE; Engelbert, U; Gregory, JN; Miles, GL
    This report summarises plans for radioisotope production at Lucas Heights over the period 1966-71 and indicates how these are based on present trends of demand for radioisotopes. The programme is discussed in terms of available staff and facilities; while some small staff increases will be required, the facilities presently being commissioned should be adequate over this period.
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    Radio-isotopes in Australian industry and research
    (Melbourne University Press on behalf of The Australian Atomic Energy Commission, 1958-06-02) Gregory, JN
    Radio-isotopes play a very prominent part in industry in the United States, the United Kingdom and other highly industrialised countries. These countries also use radio-isotopes, mainly as tracers, very extensively in basic and applied research, and in clinical medicine. Australian industry and research has been relatively slow to accept these new techniques, as illustrated by statistics in Table 1. The relatively low figure for the U.S.A. can be explained by their national policy in radioisotope production. In general, United States shipments from Oak Ridge are individually larger in quantity than the U.K. shipments. Many United States shipments are bulk supplies for commercial firms, who split them up for sale to the user in much smaller units. The United Kingdom organisations at Harwell and Amersham sell direct to the user, or in a form ready for use in almost all cases. Also, small shipments under general licence are not included in the U.S.A. data. If the U.S.A. figures were on the same basis as the United Kingdom data, the number of shipments per unit of population figure would be much larger than indicated in Table 1.
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    Radioisotopes
    (Australian Atomic Energy Commission, 1977-06) Gregory, JN; Knight, RJ
    A collection of articles which describe briefly some applications of the Commission's radioisotope research and production.
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    Survey on the use of radioisotopes in Australia in 1970/71
    (Australian Atomic Energy Commission, 1973-07) Gregory, JN; Crivelli, RL
    The use of radioisotopes in Australia has been surveyed for the year ending 30 June 1971. Questionnaires were sent to licenced medical, industrial and scientific users of radioisotopes. The results of these questionnaires have been used to gauge the extent of the application of radioisotopes in Australia and to forecast likely future requirements.
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    The use of a radioactive tracer (iodine-131) in the investigation of a power station cooling pond at Maitland, N.S.W.
    (Australian Atomic Energy Commission, 1958-09) Ellis, WR; Fookes, RA; Gardner, ME; Gregory, JN; Kirkwood, JB; Lamb, GN; Watt, JS
    Radioactive iodine 131, as iodide in solution, was used to trace the flow of power station condenser water through a cooling plant. The station has rating of 20 MW and the circulating water is cooled in a pond of approximately 2 X 108 gallons capacity and 40 acres area. By labeling the warm water with 473 millicuries of iodine 131 in potassium iodide carrier, introduced at the power station outlet, and using underwater scintillation and Geiger counters, it was possible to follow quantitatively the horizontal and vertical spread of water over a period f eight days after which mixing was complete. The results gave valuable information on the pond performance under weather conditions prevailing during the test period and indicated some possibilities for improvement of performance. Further tests with iodine 131 are contemplated with modification of pond conditions