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TUnIS Ring Planarity Check

This VMT product is also used for segmental lining using reinforced concrete segments.

Improper placement of segments implies the risk of damage. To avoid such damage, the planarity of the leading edge ring should be continuously monitored. By tracking the thrust cylinder extensions, TUnIS Ring Planarity Check automatically alerts the user when an uneven ring plane is detected. Planarity may be restored by manually measuring packer thickness values and installing appropriate packers.

Optimum complementary systems for monitoring the ring installation are ring sequencing, ring convergence measurement of the centred ring installation in the tailskin.