Other Air Pollutants
The operation of our vessels involves the burning of fossil fuels and the emission of exhaust gases. These emissions other than carbon dioxide (CO2), are sulphur oxides (SOx), nitrogen oxides (NOx), carbon monoxide (CO), volatile organic compounds (VOC), and particulate matters (PM), all of which are contributors to localized smog and acid rain effects. Our subsidiary Caspian Services Group recognizes the importance of reporting and managing these emissions to minimize the undesired effects of our activities on the environment.

The quantity of SOx produced in exhaust gases is directly related to the quantity of sulfur in the fuel. The International Maritime Organization (IMO) has introduced regulations limiting the maximum sulfur content of fuel to 4.5%. Caspian Services Group vessels already use a clean distillate No.2 fuel with a low sulfur content of 0.25%, and are ready for future reductions in the limits on sulfur.

NOx emissions emerge from the combustion process in engines and, similar to SOx, are regulated by the IMO. All Caspian Services Group vessels are in compliance with IMO NOx emission standards of the International Convention on the Prevention of Pollution from Ships, MARPOL 73/78, and Caspian Services Group is ready for the coming changes to NOx standards.

Total emissions of SOx, NOx, CO, and VOCs, increased as a result of the company’s growth and the addition of new vessels, but increased efficiencies resulted in emissions intensity per $ of revenue dropping 15% from 2006 levels.

Ozone depleting substances

As part of the International Convention on the Prevention of Pollution from Ships deliberate emissions of ozone depleting substances are prohibited, including halons and chlorofluorocarbons (CFCs). New installations containing ozone-depleting substances are also prohibited on all vessels. Caspian Services Group complies with all national and international regulations regarding the use of ozone depleting substances and follows manufactures maintenance recommendations to minimize the leakage of refrigerant gases. In addition Caspian Services Group uses only industry certified companies to carry out regular maintenance works and the recycling of gases.

Refrigerant gases contribute to climate change and are defined as GHG’s. Caspian Services Group’ fugitive emissions of ozone depleting substances from refrigeration units were assessed as part of the GHG inventory.