The Scottish Environment Statistics - 1998

7. RADIOACTIVITY

Table 7.6 Environmental monitoring by operator - sea discharges,1988-1995 Foreshore dose rate measurements Site Location Measurements Annual mean dose rates, micrograys per hour 1988 1989 1990 1991 1992 1993 1994 1995 Chapelcross Beaches Gamma dose rate1 0.15 0.16 0.14 0.18 0.13 0.14 0.13 0.12 Stake nets Gamma dose rate1 0.12 0.11 0.12 0.16 0.13 0.12 0.10 0.09 Douneray General foreshore Gamma dose rate at 1m2 0.09 0.08 0.10 0.08 0.10 0.08 0.10 0.12 Rocky areas Gamma dose rate at 1m2 0.17 0.10 0.11 0.10 0.11 0.09 0.12 0.16 Salmon nets Beta/gamma dose rate on surface of nets3 0.03 0.03 0.09 0.02 0.03 0.07 0.02 0.03 Hunterston Little Brigurd Gamma dose rate4 0.11 0.10 0.09 0.09 0.10 0.09 0.10 0.10 Burnfoot Gamma dose rate4 0.10 0.10 0.10 0.09 0.09 0.10 0.10 0.10 Ardnell Bay Gamma dose rate4 0.10 0.10 0.10 0.09 0.09 0.10 0.11 0.10 Torness Coldingham Bay Gamma dose rate4 0.067 0.067 0.065 0.065 0.071 0.065 0.064 0.067 Pettico Wick Gamma dose rate4 0.980 0.090 0.100 0.087 0.081 0.097 0.097 na5 Hirst Rocks Beach Gamma dose rate4 0.950 0.087 0.089 0.093 0.083 0.090 na na Pease Bay Gamma dose rate4 0.070 0.071 0.070 0.073 0.071 0.071 0.071 0.068 Thorntonloch Gamma dose rate4 0.062 0.064 0.057 0.061 0.067 0.059 0.064 0.062 Skateraw Harbour Gamma dose rate4 0.064 0.065 0.061 0.060 0.066 0.063 0.062 0.067 Chapel Point/Barn's Ness Gamma dose rate4 0.067 0.062 0.062 0.065 0.068 0.060 0.067 0.063 White Sands Gamma dose rate4 0.062 0.066 0.062 0.063 0.069 0.061 0.066 0.066 Belhaven Bay (South) Gamma dose rate4 0.066 0.064 0.065 0.063 0.069 0.061 0.060 0.063 Tyne Sands Gamma dose rate4 0.083 0.083 0.081 0.072 0.073 0.078 0.079 0.088 Eyemouth Gamma dose rate4 na na na na na 0.082 0.077 0.083 Source: HM Industrial Pollution Inspectorate ns: not sampled nd: not detected na: not analysed 1 The measured dose rate includes a contribution of at least 0.07 micrograys per hour from natural radiation. 2 The gamma dose rate at 1m includes a contribution of between 0.05 and 0.07 micrograys per hour from natural radiation. 3 The dose rates on the nets have been corrected for the background count rate of the instrument used. 4 The measured dose rate includes a contribution of at least 0.05 micrograys per hour from natural radiation. 5 Measurements at this location were suspended in 1994 owing to problems of access.