Today we performed an He test session on the newly installed parts of IB tower (see also entry 32929)

minilinks: passed, LR<1E-9 mbar.l/s (we tested just the 4 outer flanges DN63CF, both the two minilinks)
IB Smalltrap valve: passed, LR1E-9 mbar.l/s - outer flange DN650 helicoflex sealed
Viewport embedded on the gate: TBC , LR=1E-5 mbar.l/s

Currently we are venting the tower, tomorrow we will inspect the mount of the viewport