Table 1: Geometrical parameters of the hermetic compartments of the test facility.

Hermetic box (designation) Volume, (m3) Total area of walls, (m2) Heat insulated area, (m2) Dead volume () 46,5 98 0 Steam generator box () 71,8 121 40 Steam generator box () 72,5 124 41 BC shaft () 75 200 98 BC gasroom () 61,1 77 0 BC water in trays 12,8 73 0 Air trap () 176,5 206 93