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The Pollution Prevention and Control (Scotland) Regulations 2012
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Changes to legislation:
The Pollution Prevention and Control (Scotland) Regulations 2012, PART 2 is up to date with all changes known to be in force on or before 08 November 2024. There are changes that may be brought into force at a future date. Changes that have been made appear in the content and are referenced with annotations.
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Revised legislation carried on this site may not be fully up to date. Changes and effects are recorded by our editorial team in lists which can be found in the ‘Changes to Legislation’ area. Where those effects have yet to be applied to the text of the legislation by the editorial team they are also listed alongside the legislation in the affected provisions. Use the ‘more’ link to open the changes and effects relevant to the provision you are viewing.
Changes and effects yet to be applied to the whole Instrument associated Parts and Chapters:
Whole provisions yet to be inserted into this Instrument (including any effects on those provisions):
- reg. 57A inserted by 2024 asp 13 s. 20(3)
[F1PART 2STables
Textual Amendments
F1Sch. 1B inserted (19.12.2017) by The Pollution Prevention and Control (Scotland) Amendment Regulations 2017 (S.S.I. 2017/446), reg. 1(1), sch.
11. All emission limit values set out in this Part are defined—S
(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 1
Emission 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 |
|---|---|---|---|---|---|---|
(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. | ||||||
| SO2 (mg/Nm3) | 200(1)(2) | 1100 | _ | 350 | _ | 200(3) |
| NOx (mg/Nm3) | 650 | 650 | 200 | 650 | 250 | 250 |
| Dust (mg/Nm3) | 50 | 50 | _ | 50 | _ | _ |
Table 2
Emission 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 |
|---|---|---|---|---|---|---|
(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) 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/Nm3 in 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. | ||||||
| SO2 (mg/Nm3) | 200(1)(2) | 400(3) | _ | 350(4) | _ | 35(5)(6) |
| NOx (mg/Nm3) | 650 | 650 | 200 | 650 | 200 | 250 |
| Dust (mg/Nm3) | 30(7) | 30(7) | _ | 30 | _ | _ |
Table 3
Emission 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 |
|---|---|---|---|---|---|
(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. | |||||
| SO2 (mg/Nm3) | Engines and gas turbines | _ | 120 | _ | 15(1)(2) |
| NOx (mg/Nm3) | Engines | 190(3)(4) | 190(3)(5) | 190(6) | 190(6) |
| Gas turbines(7) | 200 | 200 | 150 | 200 | |
| Dust (mg/Nm3) | Engines and gas turbines | _ | 10(8) | _ | _ |
Table 4
Emission 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 |
|---|---|---|---|---|---|---|
(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 | ||||||
| SO2 (mg/Nm3) | 200(1) | 400 | _ | 350(2) | _ | 35(3)(4) |
| NOx (mg/Nm3) | 300(5) | 300(5) | 200 | 300(6) | 100 | 200 |
| Dust (mg/Nm3) | 20(7) | 20(7) | _ | 20(8) | _ | _ |
Table 5
Emission 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 |
|---|---|---|---|---|---|
(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 NOx 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.] | |||||
| SO2 (mg/Nm3) | Engines and gas turbines | _ | 120(1) | _ | 15(2) |
| NOx (mg/Nm3) | Engines(3)(4) | 190(5) | 190(5)(6) | 95(7) | 190 |
| Gas turbines(8) | 75 | 75(9) | 50 | 75 | |
| Dust (mg/Nm3) | Engines and gas turbines | _ | 10(10)(11) | _ | _ |
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