The Scottish Environment Statistics - 1998

7. RADIOACTIVITY

Table 7.3 Discharges of solid waste to Drigg, 1992-1995 Nature of radioactivity Annual discharge 1992 1993 1994 1995 Chapelcross Volume (cubic metres)1 39 96 125 41 Radioactivity: total beta/gamma (gigabecquerels) 22 113 57 80 Dounreay2 Volume (cubic metres) 300 1,200 255 446 Radioactivity: (gigabecquerels) total alpha 27 20 21 39 total beta/gamma 14 340 243 223 Hunterston Volume (cubic metres) 228 223 223 166 Radioactivity: (gigabecquerels) Alpha emitters 0.011 0.002 0.011 0.013 Beta/gamma emitters (except tritium and cobalt 60)3 15 14 36 22 Tritium 0.38 0.34 0.67 0.44 Cobalt 60 2.6 2.6 5.7 3.2 Torness Volume (cubic metres)1 38 nil 57 77 Radioactivity: (gigabecquerels) Alpha emitters 0.0045 nil nil nil Beta/gamma emitters (except tritium and cobalt 60)3 0.32 nil 0.98 1.9 Tritium 0.0011 nil 0.003 nil Cobalt 60 0.085 nil 0.28 0.36 Source: HM Industrial Pollution Inspectorate 1 Figures are the volume of waste and its packaging; they do not include the volume of the transport containers 2 Disposals made to the approved area at Dounreay. 3 The figures include a contribution from iron 55 which is a low energy x-ray emitter.