HC Deb 12 December 1986 vol 107 c318W
Mr. D. E. Thomas

asked the Secretary of State for Wales if he will publish a list showing the estimated critical group exposures associated with 100 per cent. of authorised radioactive discharges at each licensed nuclear power station in Wales, where such authorisations contain numerical limits; and if he will make a statement.

Mr. Wyn Roberts

The information requested is not readily available. I shall write to the hon. Gentleman as soon as possible.

Mr. D. E. Thomas

asked the Secretary of State for Wales if he will publish a list showing, for each licensed nuclear power station in Wales (a) the calculated critical group exposures associated with actual radioactive discharges in the last year, and (b) the proportion that actual radioactive discharges in the last year hear to maximum authorised limits, where such authorisations contain numerical limits; and if he will make a statement.

Mr. Wyn Roberts

The estimated doses for the critical groups in 1985 in respect of Wylfa* and Trawsfynydd nuclear power stations were less than 0.1 milli sievert arid 0.21 milli sievert respectively. The discharges for 1985 expressed as a percentage of the authorised limits are:

Gross alpha/beta Tritium Caesium 137
Wylfa 2 4.7
Trawsfynydd 28.8 3.2 24.3
* Mainly due to discharges from Sellafield.

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