A containment/surveillance concept combining nuclear measurements and video surveillance for self-authentication of data and video pictures

The pools of the COGEMA reprocessing plant at La Hague are safeguarded jointly by the IAEA and Euratom. Initially it was decided to improve the verification of dry-unloaded assemblies in workshop T0 by developing CONSULHA. This device has been in routine use since February 1991. Subsequently it was planned to carry out verification of assemblies during unloading under water. The NPH2 workshop will be fitted with equipment appropriate for this configuration. The CEA/DAMRI/SAR team, in co-operation with the IAEA and Euratom, carried out tests of safeguards detectors in June 1991. An original feature of the NPH2 device is that the authentication system is incorporated in the hardware itself. The paper proposes a tamper resistance concept to supplement the existing systems. The device is designed on the basis of experience gained and will provide an efficient tool at a highly competitive cost. Is is expected to be installed by the end of 1994. (author). 3 figs