136 / 172
Prysmian Group – 2015 Sustainability Report
Environment
________________________________________________________________________________________________
136
WATER CONSUMPTION PER TONNE OF PRODUCT (m
3
/t)
WATER CONSUMPTION PER Km OF PRODUCT (m
3
/Km)
PERCENTAGE OF PROCESS WATER RECIRCULATED
Process water - e.g. which is used to cool semi-final products - is recirculated at numerous factories, in
whole or in part depending on the situation, in order to avoid excessive consumption. In order to better
understand the degree of efficiency achieved in the use of water, a methodology has been devised in
collaboration with the Merlino factory in order to determine the "percentage of water recirculated" with
respect to the total water consumption. The concept is based on how much is saved (compared with not
having a recirculation plant) in relation to the total quantity of water consumed for processing reasons (due to
evaporation, occasional emptying of the circuit, or the lack or only partial installation of a recirculation plant).
The formula is applied to an increasing number of factories and, in 2015, slightly more than half of them
reported the related results in terms of water recirculated as a percentage of the total quantity used. In the
overwhelming majority of cases, hydraulic circuits are served by a recirculation system (confirmed by 94% of
factories) and, of these, the recirculated water represents between 90 and 99.9% of the total water used in
4.96
4.74 4.65
0
1
2
3
4
5
Power Cables
2013
2014
2015