Sectoral Analysis for Other Combustion Sources
Other combustion sector is one of the important sources of RSP and FSP emissions, accounting for 17% and 20% of their total emissions in 2016 respectively. Overall, the emissions of various pollutants from other combustion sources decreased by 26% to 96% from 1997 to 2016.
Major contributing sources in this sector are non-road mobile machineries (NRMMs), especially construction machinery, which accounted for 56%, 59% and 62% of RSP, FSP and NOx emissions from other combustion sources respectively in 2016. The emission trends from other combustion sources from 2010 to 2016 by and large 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. Since January 2009, Euro V diesel (with sulphur content not exceeding 0.001%) has been imported for industrial and construction use.