§ Mr. Wigleyasked the Secretary of State for Wales. pursuant to his answer of 23 May, Official Report, column 350, on radiation levels at Trawsfynydd immediately following the Chernobyl disaster, if he will now publish the level of iodine 131 at Trawsfynydd for the days between the Chernobyl disater and 3 May; and what was the highest daily level of iodine 131 detected at Trawsfynydd during the 12-month period prior to the Chernobyl disaster; and if he will arrange for such information to be publicly available on a routine basis.
§ Mr. Mark RobinsonThe first date for which rainwater was sampled at Trawsfynydd following the Chernobyl accident was 3 May.
Monitoring of radioactivity in rainfall does not form part of the environmental monitoring programme which nulcear power stations are required to undertake under their terms of authorisation. However, Trawsfynydd nuclear power station does analyse hulk samples of rainwater on a monthly basis, and no iodine 131 was detected in the 12-month period up to 3 May.
The Department now publishes an "Environmental Digest for Wales", which includes data on raidoactivity levels near Trawsfynydd. A copy of the digest is in the Library of the House.