For Stage 2 (1998 to 2001 inclusive), annual growth rates should be 25 per cent higher than the Stage 1 rates.

For Stage 3 (2002 to 2004 inclusive), annual growth rates should be 27 per cent higher than the Stage 2 rates.

The restraint systems presently used with existing heat exchangers or recuperators have a thermal growth rate different than the thermal growth rate of the core of the recuperator.