Environmental review and assessments consultants

Control of Ozone Depleting Substances

The chimney or stack height plays a role to discharge and disperse the air pollutants at higher altitude and over wider area to reduce their concentrations and impact on the ambient air and to maintain the air quality in compliance with regulatory limits.

The ozone layer in the stratosphere between 10 and 50 km above the earth protects us from the harmful effects of ultra-violet (UV) radiation from the sun. But, the thinning of ozone layer which was discovered in 1974 due to halogenated hydrocarbons such as CFCs (Chlorofluorocarbons) increases the amount of UV reaching the earth and can suppress the human body's immune system making people vulnerable to diseases, increase skin cancers, cause eye disorders such as cataracts and also damages marine life and reduces crop yields

The Governing Council of the United Nations Environment Programme (UNEP) first discussed the issue of ozone depletion in 1976. A meeting of experts on the ozone layer was convened in 1977, after which UNEP and the World Meteorological Organization (WMO) set up the Coordinating Committee of the Ozone Layer (CCOL) to periodically assess ozone depletion. Intergovernmental negotiations for an international agreement to phase out ozone depleting substances started in 1981 and concluded with the adoption of the Vienna Convention for the Protection of the Ozone Layer in March 1985. The Vienna Convention encourages intergovernmental cooperation on research, systematic observation of the ozone layer, monitoring of CFC production, and the exchange of information.

The Montreal Protocol on Substances that Deplete the Ozone Layer was adopted in 16th September 1987 and came into force on 1st January 1989. It was designed so that the phase out schedules of ozone depleting substances could be revised on the basis of periodic scientific and technological assessments. The Protocol classified countries into Developed (Non-Article 5) and Developing (Article 5)classes based on their annual per capita consumption of controlled substances. The Developed countries with annual consumption of more than 0.3 Kg per capita were required to cease production and phaseout consumption of controlled substances in January 01, 1996.

The Developing countries with annual consumption of less than 0.3 kg per capita of ODSs were granted a 10 years grace period to comply with the phase out targets in an orderly and economical way. The United Arab Emirates became a party to both the Vienna convention and the Montreal protocol in December 22, 1989 and is considered an Article (5) country. This policy has been introduced to guide industries, traders, users and other activities toward the orderly phase out goal of ozone depleting substances in accordance with the schedule in Montreal Protocol in Annex1 and the Adjustments in 2007 in Annex2. It shall apply to occupier / operator of all premises in which ozone-depleting substances (ODSs) are imported, stored, traded and used in Dubai as listed in Annex3