UKAEA holds a Permit issued by the Environment Agency (EPR/LB3330DP) which enables specified activities at Culham to be undertaken using tritium and other fusion relevant material and for the management of waste generated from these activities. As you would expect, there are strict limits and controls required for this work and we are regulated by the Environment Agency for compliance.
The permit contains a map which defines the permit boundary, and for some historic reason, it includes land which is outside the existing security fence on the south side of site. This area has never been used by UKAEA for operational activities nor does it appear to have been used operationally in that way by RNAS Hornbill (the naval air station that was located on the site in the 1940s and 1950s)
In preparation for ownership of some of this land transferring to Oxfordshire County Council for the Housing Infrastructure Fund scheme implementation, UKAEA is preparing to surrender the Permit for the land outside the new security boundary and we have had discussions with the Environment Agency Inspector and other sites who have undertaken similar activities. In such cases it would appear to be good practice, and support the surrender case, for checks to be undertaken which could identify legacy issues, for example from aircraft dials which had a component that was slightly radioactive to enable them to be seen in the dark.
Therefore, the UKAEA Health Physics Group will be undertaking a survey of this area over the next few weekends which will be seeking to confirm that there is no evidence of liabilities predating UKAEA ownership.
As key local stakeholders we wanted to inform you of an activity, which could be viewed as unusual, so that you are aware of the reason for it; we are also informing our immediate neighbours.