ANNEX U.K.

Technical appendix for hard coverings

A5 Water consumption calculation U.K.

The fresh water specific consumption shall be calculated as follows:

CW_p-a = (W_p + W_a)/P_t

Cw_p-a

=

fresh water specific consumption. The results are expressed in m³/tonnes, equivalent to l/kg;

P_t

=

total stored production in tonnes;

W_p

=

water from wells and intended for exclusive industrial use (excluding water form wells for domestic use, irrigation and any other non-industrial use), in m³;

W_a

=

water from aqueduct and intended for exclusive industrial use (excluding water form aqueduct for domestic use, irrigation and any other non-industrial use) in m³.

The system boundaries are intended from raw materials to firing operation.