Browsing by Author "Arthur, J"

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    Colour film techniques for hot-cell radiography
    (Australian Atomic Energy Commission, 1971-08) Arthur, J; Blake, RG; Kelly, PM
    The report describes the processing and exposure conditions required to produce good colour radiographs of dummy fuel pins. Using a travelling microscope, cladding tube diameters, fuel pellet diameters and tube/pellet gaps were measured on colour radiographs to an accuracy of better than + 0.002 inches. The minimum detectable tube/pellet gap was 0.003 inches. In all cases the colour radiographs proved to be as good as or better than black and white radiographs of the same object. The se a microdensitometer to measure colour radiographs, it was necessary to print the radiographs on black and white film. A suitable black and white emulsion for this process was established and the results obtained compare favourably with those taken from black and white radiographs. Colour film is more tolerant to gamma radiation than an equivalent black and white x-ray film.
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    Environmental survey at Lucas Heights Research Laboratories, 1989
    (Australian Nuclear Science and Technology Organisation, 1990-09) Hoffmann, EL; Arthur, J
    Results are presented of an environmental survey conducted in the neighbourhood of the Lucas Heights Research Laboratories during 1989. No radioactivity which could have originated from these laboratories was found in samples collected from possible human food chains. All low-level liquid and gaseous waste discharges were within authorised limits. The maximum possible annual dose to the general public from airborne waste during this period is estimated to be less than 0.01 millisieverts which is one per cent of the limit for long-term exposure that is recommended by the National Health and Medical Research Council.