Combustion Installations

National Environmental Management.
Air Quality Act 39 Of 2004 – South Africa.

(Gazette No. 27318, Notice No. 163. Commencement date: 11 September 2005 – save for sections 21, 22, 36 to 49, 51(1)(e), 51(1)(f), 51(3), 60 and 61 [Government Notice R898, Gazette No. 28016]

Part 3 – Minimum Emission Standards

Category 1
Combustion Installations

Subcategory 1.1: Solid Fuel Combustion Installations

Description: Solid fuels combustion installations used primarily for steam raising or electricity generation

Application: All installations with design capacity equal to or greater than 50 MW heat input per unit, based on the lower calorific value of the fuel used.



  • The following special arrangement shall apply

    • Continuous emission monitoring of PM, SO2 and NOx is required, however, installations less than 100 MW heat input per unit must adhere to periodic emission monitoring as stipulated in Part 2 of this Notice.
    • Where co-feeding with waste materials with calorific value allowed in terms of the Waste Disposal Standards published in terms of the Waste Act, 2008 (Act No.59 of 2008) occurs, additional requirements under subcategory 6 shall apply.

Subcategory 1.2: Liquid Fuel Combustion Installations

Description: Liquid fuels combustion installations used primarily for steam raising or electricity generation.

Application: All installations with design capacity equal to or greater than 50 MW heat input per unit, based on the lower calorific value of the fuel used.



  • The following special arrangement shall apply

    • Reference conditions for gas turbines shall be 15% 02, 273K and 3kPa
    • Continuous emission monitoring of PM, SO2 and NOX is required, however, installations less than 100 MW heat input per unit must adhere to periodic emission monitoring as stipulated in Part 2 of this Notice.

    • Where co-feeding with waste materials with calorific value allowed in terms of the Waste Disposal Standards published in terms of the Waste Act, 2008 (Act No.59 of 2008) occurs, additional requirements under subcategory 6 shall apply.

    • Where co-feeding with waste materials with calorific value allowed in terms of the Waste Disposal Standards published in terms of the Waste Act, 2008 (Act No.59 of 2008) occurs, additional requirements under subcategory 6 shall apply.

Subcategory 1.3: Solid Biomass Combustion Installations

Description: Solid biomass fuel combustion installations used primarily for steam raising or electricity generation.

Application: All installations with design capacity equal to or greater than 50 MW heat input per unit, based on the lower calorific value of the fuel used.



  • The following special arrangement shall apply

    • Continuous emission monitoring of PM, SO2 and NOX is required, however, installations less than 100 MW heat input per unit must adhere to periodic emission monitoring as stipulated in Part 2 of this Notice

    • Where co-feeding with waste materials with calorific value allowed in terms of the Waste Disposal Standards published in terms of the Waste Act, 2008 (Act No.59 of 2008) occurs, additional requirements under subcategory 6 shall apply.

Subcategory 1.4: Gas Combustion Installations

  • The following special arrangement shall apply

    • Reference conditions for gas turbines shall be 15% 02, 273K and 3kPa.

    • Where co-feeding with waste materials with calorific value allowed in terms of the Waste Disposal Standards published in terms of the Waste Act, 2008 (Act No.59 of 2008) occurs, additional requirements under subcategory 1.6 shall apply.

Subcategory 1.5: Reciprocating Engines

Subcategory 1.6: Waste Co-feeding Combustion Installations