The aim of this programme of work is to establish reference dosimetry and spectrometry measurements for the leakage radiation fields available from the French SILENE reactor using shields of different materials. The characterization of these radiation fields is required before their use for a proposed EURADOSACENDOS international intercomparison, in cooperation with the IAEA, of the criticality accident dosimetry systems used in European and other laboratories.
The initial objective is to make spectrometry and dosimetry measurements at one reference location, and to define the uniformity of the radiation field around the source, as a feasibility study for the criticality accident dosimetry intercomparison.
The ultimate objective is to propose the full protocol for an international intercomparison of criticality accident dosimetry systems. This is required for the training of staff in the specialist measurement techniques employed, for the evaluation and development of dose assessment procedures and to ensure compatibility of such systems within the CEC.
The study contract will be undertaken in consultation with other EURADOSACENDOS CommitteeA9 European Laboratories.
In June and November 1990, it is intended that the complimentary dosimetry techniques offered by FontenayAauxARoses and Harwell Laboratories should be used to make reference dosimetry and neutron spectrometry measurements for the SILENE leakage radiation field with the reactor shielded. These measurements will be repeated in 1991 for a second field, with the reactor unshielded, under another study contract.
The full intercomparison could be planned for 1992.
This work will be undertaken under the DG XII programme, but is a requirement for the proposed international intercomparison of criticality accident dosimetry systems to be undertaken under DG XI.