Main content | back to top

Ozone depleting emissions

We are phasing out ozone-depleting substances in our operations in accordance with the Montreal Protocol. Since 1999, our emissions of chlorofluorocarbons (CFCs), halons and trichloroethane have fallen by nearly 80%, and hydrochlorofluorocarbons (HCFCs) by approximately 63%.

Chlorofluorocarbons (CFCs), halons, trichloroethane
Hydrochlorofluorocarbons (HCFCs)

Chart 1: Chlorofluorocarbons, halons, trichloroethane

We have virtually phased out the use of chlorofluorocarbons (CFCs), trichlorethane and halons. However, emissions of these three substances combined in 2008 amounted to 1.4 tonnes – nearly 60% higher than in 2007. This increase was due to emissions from ageing equipment at one location. This equipment is scheduled for removal by end 2009.

These man-made substances contribute to the thinning of the ozone layer and allow larger quantities of harmful ultraviolet rays to reach the earth. These substances were formerly used widely in industry as refrigerants, propellants, cleaning solvents and in fire extinguishers. CFCs, halons and trichloroethanes must be fully phased out by 2010.

Chart 2: Hydrochlorofluorocarbons

In 2008 we reduced our emissions of HCFCs only slightly compared to 2007. HCFCs have been used primarily as substitutes for CFCs, since the environmental effects are 90% lower than those of CFCs. HCFCs must be phased out in developed countries by 2020 and in developing countries by 2040.