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At the start of the shutdown following the DTE1 experiment at JET there remained 6.2 g of tritium in the JET vacuum vessel. An attempt has been made to establish the location of this tritium by measuring components taken from the vessel. A total of 2.0 g of tritium was recovered by out-gassing and 1.5 g was originally estimated for the flakes/deposits from measurement of collected flakes. Measurements...