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Technical provisions relating to combustion plants PART 1 Emission limit values for combustion plants referred to in Article 30(2) 1. All emission limit values shall be calculated at a temperature of 273,15 K, a pressure of 101,3 kPa and after correction for the water vapour content of the waste gases and at a standardised O2 content of 6 % for solid fuels, 3 % for combustion plants, other than gas turbines and gas engines using liquid and gaseous fuels and 15 % for gas turbines and gas engines.

2. Emission limit values (mg/Nm3) for SO2 for combustion plants using solid or liquid fuels with the exception of gas turbines and gas engines Combustion plants, using solid fuels which were granted a permit before 27 November 2002 or the operators of which had submitted a complete application for a permit before that date, provided that the plant was put into operation no later than 27 November 2003, and which do not operate more than 1 500 operating hours per year as a rolling average over a period of 5 years, shall be subject to an emission limit value for SO2 of 800 mg/Nm3. Combustion plants using liquid fuels, which were granted a permit before 27 November 2002 or the operators of which had submitted a complete application for a permit before that date, provided that the plant was put into operation no later than 27 November 2003, and which do not operate more than 1 500 operating hours per year as a rolling average over a period of 5 years, shall be subject to an emission limit value for SO2 of 850 mg/Nm3 in case of plants with a total rated thermal input not exceeding 300 MW and of 400 mg/Nm3 in case of plants with a total rated thermal input greater than 300 MW. A part of a combustion plant discharging its waste gases through one or more separate flues within a common stack, and which does not operate more than 1 500 operating hours per year as a rolling average over a period of 5 years, may be subject to the emission limit values set out in the preceding two paragraphs in relation to the total rated thermal input of the entire combustion plant. In such cases the emissions through each of those flues shall be monitored separately.

3. Emission limit values (mg/Nm3) for SO2 for combustion plants using gaseous fuels with the exception of gas turbines and gas engines Combustion plants, firing low calorific gases from gasification of refinery residues, which were granted a permit before 27 November 2002 or the operators of which had submitted a complete application for a permit before that date, provided that the plant was put into operation no later than 27 November 2003, shall be subject to an emission limit value for SO2 of 800 mg/Nm3.

4. Emission limit values (mg/Nm3) for NOx for combustion plants using solid or liquid fuels with the exception of gas turbines and gas engines Combustion plants in chemical installations using liquid production residues as non-commercial fuel for own consumption with a total rated thermal input not exceeding 500 MW which were granted a permit before 27 November 2002 or the operators of which had submitted a complete application for a permit before that date, provided that the plant was put into operation no later than 27 November 2003, shall be subject to an emission limit value for NOx of 450 mg/Nm3. Combustion plants using solid or liquid fuels with a total rated thermal input not exceeding 500 MW which were granted a permit before 27 November 2002 or the operators of which had submitted a complete application for a permit before that date, provided that the plant was put into operation no later than 27 November 2003, and which do not operate more than 1 500 operating hours per year as a rolling average over a period of 5 years, shall be subject to an emission limit value for NOx of 450 mg/Nm3. Combustion plants using solid fuels with a total rated thermal input greater than 500 MW, which were granted a permit before 1 July 1987 and which do not operate more than 1 500 operating hours per year as a rolling average over a period of 5 years, shall be subject to an emission limit value for NOx of 450 mg/Nm3. Combustion plants using liquid fuels, with a total rated thermal input greater than 500 MW which were granted a permit before 27 November 2002 or the operators of which had submitted a complete application for a permit before that date, provided that the plant was put into operation no later than 27 November 2003, and which do not operate more than 1 500 operating hours per year as a rolling average over a period of 5 years, shall be subject to an emission limit value for NOx of 400 mg/Nm3. A part of a combustion plant discharging its waste gases through one or more separate flues within a common stack, and which does not operate more than 1 500 operating hours per year as a rolling average over a period of 5 years, may be subject to the emission limit values set out in the preceding three paragraphs in relation to the total rated thermal input of the entire combustion plant. In such cases the emissions through each of those flues shall be monitored separately.

5. Gas turbines (including combined cycle gas turbines (CCGT)) using light and middle distillates as liquid fuels shall be subject to an emission limit value for NOx of 90 mg/Nm3 and for CO of 100 mg/Nm3. Gas turbines for emergency use that operate less than 500 operating hours per year are not covered by the emission limit values set out in this point. The operator of such plants shall record the used operating hours.

6. Emission limit values (mg/Nm3) for NOx and CO for gas fired combustion plants For gas turbines (including CCGT), the NOx and CO emission limit values set out in the table contained in this point apply only above 70 % load. For gas turbines (including CCGT) which were granted a permit before 27 November 2002 or the operators of which had submitted a complete application for a permit before that date, provided that the plant was put into operation no later than 27 November 2003, and which do not operate more than 1 500 operating hours per year as a rolling average over a period of 5 years, the emission limit value for NOx is 150 mg/Nm3 when firing natural gas and 200 mg/Nm3 when firing other gases or liquid fuels. A part of a combustion plant discharging its waste gases through one or more separate flues within a common stack, and which does not operate more than 1 500 operating hours per year as a rolling average over a period of 5 years, may be subject to the emission limit values set out in the preceding paragraph in relation to the total rated thermal input of the entire combustion plant. In such cases the emissions through each of those flues shall be monitored separately. Gas turbines and gas engines for emergency use that operate less than 500 operating hours per year are not covered by the emission limit values set out in this point. The operator of such plants shall record the used operating hours.

7. Emission limit values (mg/Nm3) for dust for combustion plants using solid or liquid fuels with the exception of gas turbines and gas engines 8. Emission limit values (mg/Nm3) for dust for combustion plants using gaseous fuels with the exception of gas turbines and gas engines PART 2 Emission limit values for combustion plants referred to in Article 30(3) 1. All emission limit values shall be calculated at a temperature of 273,15 K, a pressure of 101,3 kPa and after correction for the water vapour content of the waste gases and at a standardised O2 content of 6 % for solid fuels, 3 % for combustion plants other than gas turbines and gas engines using liquid and gaseous fuels and 15 % for gas turbines and gas engines. In case of combined cycle gas turbines with supplementary firing, the standardised O2 content may be defined by the competent authority, taking into account the specific characteristics of the installation concerned.

2. Emission limit values (mg/Nm3) for SO2 for combustion plants using solid or liquid fuels with the exception of gas turbines and gas engines

3. Emission limit values (mg/Nm3) for SO2 for combustion plants using gaseous fuels with the exception of gas turbines and gas engines 4. Emission limit values (mg/Nm3) for NOx for combustion plants using solid or liquid fuels with the exception of gas turbines and gas engines 5. Gas turbines (including CCGT) using light and middle distillates as liquid fuels shall be subject to an emission limit value for NOx of 50 mg/Nm3 and for CO of 100 mg/Nm3 Gas turbines for emergency use that operate less than 500 operating hours per year are not covered by the emission limit values set out in this point. The operator of such plants shall record the used operating hours.

6. Emission limit values (mg/Nm3) for NOx and CO for gas fired combustion plants For gas turbines (including CCGT), the NOx and CO emission limit values set out in this point apply only above 70 % load. Gas turbines and gas engines for emergency use that operate less than 500 operating hours per year are not covered by the emission limit values set out in this point. The operator of such plants shall record the used operating hours.

7. Emission limit values (mg/Nm3) for dust for combustion plants using solid or liquid fuels with the exception of gas turbines and gas engines 8. Emission limit values (mg/Nm3) for dust for combustion plants using gaseous fuels with the exception of gas turbines and gas engines PART 3 Emission monitoring 1. The concentrations of SO2, NOx and dust in waste gases from each combustion plant with a total rated thermal input of 100 MW or more shall be measured continuously. The concentration of CO in waste gases from each combustion plant firing gaseous fuels with a total rated thermal input of 100 MW or more shall be measured continuously.

2. The competent authority may decide not to require the continuous measurements referred to in point 1 in the following cases:

(a) for combustion plants with a life span of less than 10 000 operational hours;

(b) for SO2 and dust from combustion plants firing natural gas;

(c) for SO2 from combustion plants firing oil with known sulphur content in cases where there is no waste gas desulphurisation equipment;

(d) for SO2 from combustion plants firing biomass if the operator can prove that the SO2 emissions can under no circumstances be higher than the prescribed emission limit values.

3. Where continuous measurements are not required, measurements of SO2, NOx, dust and, for gas fired plants, also of CO shall be required at least once every 6 months.

4. For combustion plants firing coal or lignite, the emissions of total mercury shall be measured at least once per year.