Sectoral Analysis for Other Combustion Sources
Other combustion sector is one of the important sources of RSP and FSP emissions, accounting for 15% and 17% of the total emissions in 2015, respectively. Overall, the emissions decreased by 28% to 96% from 1997 to 2015.
Major contributing sources in this sector are non-road mobile machineries (NRMMs), especially construction machinery, which accounted for 70%, 74% and 67% of other combustion source RSP, FSP and NOx emissions respectively in 2015. The emission trends from 2010 to 2015 more or less followed the fuel consumption growth in construction projects. On 1 June 2015, the Air Pollution Control (Non-road Mobile Machinery) (Emission) Regulation came into force which controls the air pollutant emissions from NRMMs. Starting from 1 September 2015, any regulated machine to be sold or leased for local use must be an approved or exempted NRMM and must comply with the emission standards of Stage IIIA of the European Union or equivalent, while non-road vehicles must comply with Euro V emission standards.
The SO2 emissions from this sector have been reduced to a very low level since the Air Pollution Control (Fuel Restriction) Regulation tightened the cap on the sulphur content of diesel used in industrial and commercial sectors from 0.5% to 0.005% in October 2008. Information collected from the Customs and Excise Department indicated that since January 2009, only Euro V diesel (with sulphur content not exceeding 0.001%) has been imported for industrial and construction use.