http://www.legislation.gov.uk/id/ssi/2012/360/schedule/1b

F1SCHEDULE 1BMEDIUM COMBUSTION PLANT DIRECTIVE

Annotations:

Amendments (Textual)

Sch. 1B inserted (19.12.2017) by The Pollution Prevention and Control (Scotland) Amendment Regulations 2017 (S.S.I. 2017/446), reg. 1(1), sch.

PART 2Tables

11

All emission limit values set out in this Part are defined—

a

at a temperature of 273.15 K,

b

at a pressure of 101.3 kPa,

c

after correction for the water vapour content of the waste gases,

d

at a standardised O₂ content of—

i

6 % for medium combustion plants using solid fuels,

ii

3 % for medium combustion plants, other than engines and gas turbines, using liquid and gaseous fuels,

iii

15 % for engines and gas turbines.

Table 1Emission Limit values for existing medium combustion plant with a rated thermal input less than or equal to 5 megawatts (other than engines or gas turbines)

Pollutant	Solid Biomass	Other solid fuels	Gas oil	Liquid fuels other than gas oil	Natural gas	Gaseous fuels other than gas oil
SO₂(mg/Nm³)	200(1)(2)	1100	_	350	_	200(3)
NO_{x (}mg/Nm³)	650	650	200	650	250	250
Dust (mg/Nm³)	50	50	_	50	_	_
(1) This value does not apply in the case of plant firing exclusively woody solid biomass.
(2) 300 mg/Nm³ in the case of plants firing straw.
(3) 400 mg/Nm³ in the case of low calorific gases from coke ovens in the iron and steel industry.

Table 2Emission Limit values for existing medium combustion plant with a rated thermal greater than or equal to 5 megawatts (other than engines or gas turbines)

Pollutant	Solid Biomass	Other solid fuels	Gas oil	Liquid fuels other than gas oil	Natural gas	Gaseous fuels other than gas oil
SO₂(mg/Nm³)	200(1)(2)	400(3)	_	350(4)	_	35(5)(6)
NO_{x (}mg/Nm³)	650	650	200	650	200	250
Dust (mg/Nm³)	30(7)	30(7)	_	30	_	_
(1) This value does not apply in the case of plant firing exclusively woody solid biomass.
(2) 300 mg/Nm³in the case of plants firing straw.
(3) 1100 mg/Nm³ in the case of plants with a rated thermal input greater than 5 megawatts and less than or equal to 20 megawatts.
(4) Until 1st January 2030, 850 mg/Nm³in the case of plants with a rated thermal input greater than 5 megawatts and less than or equal to 20 megawatts firing heavy fuel oil.
(5) 400 mg/Nm³ in the case of low calorific gases from coke ovens, 200 mg/Nm³ in the case of low calorific gases from blast furnaces in the iron and steel industry.
(6) 170 mg/Nm³ in the case of biogas.
(7) 50 mg/Nm³ in the case of plants with a rated thermal input greater than 5 megawatts and less than or equal to 20 megawatts.

Table 3Emission limit values for existing engines and gas turbines

Pollutant	Type of medium combustion plant	Gas oil	Liquid fuels other than gas oil	Natural gas	Gaseous fuels other than natural gas
SO₂(mg/Nm³)	Engines and gas turbines	_	120	_	15(1)(2)
NO_{x (}mg/Nm³)	Engines	190(3)(4)	190(3)(5)	190(6)	190(6)
NO_{x (}mg/Nm³)	Gas turbines(7)	200	200	150	200
Dust (mg/Nm³)	Engines and gas turbines	_	10(8)	_	_
(1) 60 mg/Nm³ in the case of biogas.
(2) 130 mg/Nm³ in the case of low calorific gases from coke ovens and 65 mg/Nm³ in the case of low calorific gases from blast furnaces in the iron and steel industry.
(3) 1850 mg/Nm³ for (i) diesel engines the construction of which commenced before 18th May 2006 and (ii) dual fuel engines in liquid mode.
(4) 250 mg/Nm³ in the case of engines with a rated thermal input equal to or greater than 1 megawatt and less than or equal to 5 megawatts.
(5) 250 mg/Nm³ in the case of engines with a rated thermal input equal to or greater than 1 megawatt and less than or equal to 5 megawatts; 225 mg/Nm³ in the case of engines with a rated thermal input greater than 5 megawatts and less than or equal to 20 megawatts.
(6) 380 mg/Nm³ for dual fuel engines in gas mode.
(7) Emission limit values are only applicable above 70% load.
(8) 20 mg/Nm³ in the case of plants with a rated thermal input greater than 1 megawatt and less than or equal to 20 megawatts.

Table 4Emission limit values for new medium combustion plant, other than engines and gas turbines

Pollutant	Solid Biomass	Other solid fuels	Gas oil	Liquid fuels other than gas oil	Natural gas	Gaseous fuels other than gas oil
SO₂(mg/Nm³)	200(1)	400	_	350(2)	_	35(3)(4)
NO_{x (}mg/Nm³)	300(5)	300(5)	200	300(6)	100	200
Dust (mg/Nm³)	20(7)	20(7)	_	20(8)	_	_
(1) The value does not apply in the case of plants firing exclusively woody solid biomass.
(2) Until 1st January 2025, 1700 mg/Nm³ in the case of plants which are part of a small isolated system or a micro isolated system.
(3) 400 mg/Nm³ in the case of low calorific gases from coke ovens, and 200 mg/Nm³ in the case of low calorific gases from blast furnaces in the iron and steel industry.
(4) 100 mg/Nm³ in the case of biogas.
(5) 500 mg/Nm³ in the case of plants with a total rated thermal input equal to or greater than 1 megawatt and less than or equal to 5 megawatts.
(6) Until 1st January 2025, 450 mg/Nm³ when firing heavy fuel oil containing between 0.2 % and 0.3 % N and 360 mg/Nm³ when firing heavy fuel oil containing less than 0.2 % N in the case of plants which are part of a small isolated system or a micro isolated system.
(7) 50 mg/Nm³ in the case of plants with a total rated thermal input equal to or greater than 1 megawatt and less than or equal to 5 megawatts; 30 mg/Nm³ in the case of plants with a total rated thermal input greater than 5 megawatts and less than or equal to 20 megawatts.
(8) 50 mg/Nm³ in the case of plants with a total rated thermal input equal to or greater than 1 megawatt and less than or equal to 5 megawatts

Table 5Emission limit values for new medium combustion plant which are engines or gas turbines

Pollutant	Type of medium combustion plant	Gas oil	Liquid fuels other than gas oil	Natural gas	Gaseous fuels other than natural gas
SO₂(mg/Nm³)	Engines and gas turbines	_	120(1)	_	15(2)
NO_{x (}mg/Nm³)	Engines(3)(4)	190(5)	190(5)(6)	95(7)	190
NO_{x (}mg/Nm³)	Gas turbines(8)	75	75(9)	50	75
Dust (mg/Nm³)	Engines and gas turbines	_	10(10)(11)	_	_
(1) Until 1st January 2025, 590 mg/Nm³ for diesel engines which are part of a small isolated system or a micro isolated system.
(2) 40 mg/Nm³ in the case of biogas.
(3) Engines running between 500 and 1500 hours per year may be exempted from compliance with those emission limit values if they are applying primary measures to limit NO_x emissions and meet the emission limit values set out in footnote (4).
(4) Until 1st January 2025 in a small isolated system and a micro isolated system, 1850 mg/Nm³ for dual fuel engines in liquid mode and 380 mg/Nm³ in gas mode; 1300 mg/Nm³ for diesel engines with ≤ 1200 rpm with a total rated thermal input less than or equal to 20 megawatts and 1850 mg/Nm³ for diesel engines with a total rated thermal input greater than 20 megawatts; 750 mg/Nm³ for diesel engines with > 1200 rpm.
(5) 225 mg/Nm³ for dual fuel engines in liquid mode.
(6) 225 mg/Nm³ for diesel engines with a total rated thermal input less than or equal to 20 megawatts with ≤ 1 200 rpm.
(7) 190 mg/Nm³ for dual fuel engines in gas mode.
(8) These emission limit values are only applicable above 70 % load.
(9) Until 1st January 2025, 550 mg/Nm³ for plants which are part of a small isolated system or a micro isolated system.
(10) Until 1st January 2025, 75 mg/Nm³ for diesel engines which are part of a small isolated system or a micro isolated system.
(11) 20 mg/Nm³ in the case of plants with a total rated thermal input equal to or greater than 1 megawatt and less than or equal to 5 megawatts.