S.I. No. 273/1992 - Air Pollution Act, 1987 (Combustion Plant) Regulations, 1992.

1. Where the fuel with the highest emission limit value (hereinafter referred to as the determinative fuel) contributes at least 50% to the sum of the thermal inputs delivered by all fuels used in the plant the emission limit value in respect of that fuel determined in accordance with the First, Second or Third Schedule and the Fourth and Fifth Schedules to these Regulations by reference to the nature of the fuel shall be the appropriate emission limit value.

2. Where the fuel with the highest emission limit value contributes less than 50% to the sum of the thermal inputs delivered by all fuels used in the plant the emission limit value shall be determined as follows—

(i) determine the emission values for sulphur dioxide, oxides of nitrogen and dust in respect of each individual fuel in accordance with the First, Second or Third Schedule and the Fourth and Fifth Schedules of these Regulations, as appropriate.

(ii) calculate the emission limit value of the determinative fuel (in the case of two fuels having the same emission limit values, the fuel with the higher thermal input being the determinative fuel) by

(

a

) multiplying the individual emission limit for that fuel by two,

(

b

) subtracting from that product the individual emission limit value for the fuel with the lowest emission limit value,

(iii) multiply the result of (ii) (

b

) by the thermal input of the determinative fuel,

(iv) multiply the other individual emission limit values by the thermal input delivered by their associated fuel,

(v) divide each product of (iv) by the sum of the thermal inputs delivered by all the fuels, and

(vi) aggregate the individual results of (v) to obtain the fuel-weighted emission limit value.

DATED this 28th day of September, 1992.

MARY HARNEY,

Minister of State at the Department of

the Environment.

EXPLANATORY NOTE.

These Regulations prescribe emission limit values relating to sulphur dioxide, nitrogen oxides and dust for certain combustion plants in accordance with Directive 88/609/EEC on the limitation of emissions of certain pollutants from such plants.

The Regulations also give directions as to the best practicable means for limiting the emissions concerned and specify procedures for monitoring, evaluating and determining emissions.

3. Divide each resulting product by the sum of the thermal inputs delivered by all the fuels.

4. Aggregate the resulting fuel-weighted emission limit values.

NINTH SCHEDULE

Determination of emission limit values: multi-fuel firing units using distillation and conversion residues from crude oil refining, alone or with other fuels

5. In order to determine total annual emissions of sulphur dioxide and oxides of nitrogen, the occupier shall, where continuous measurement is used, add up separately for each pollutant the mass of pollutant emitted each day on the basis of the volumetric flow rates of waste gases. Where continuous measurement is not used, estimates of the total annual emissions shall be prepared by the occupier to the satisfaction of the local authority on the basis of the discontinuous measurements or other determination procedures used.

6. The occupier shall keep and supply to the local authority such details of the monitoring and of the means used for monitoring as the local authority consider necessary (including details relating to performance criteria for measuring, calibration and data-handling equipment or methods); in particular, the occupier shall supply, on an annual basis, to the local authority details of the total annual emissions of sulphur dioxide and oxides of nitrogen and details of the concentrations of these pollutants in waste gases, determined in accordance with the procedures specified in this Schedule, within a period not exceeding 3 months from the end of the calendar year to which the measurements refer.

7. In order that the local authority may decide whether any changes or adaptations are required in monitoring or in the means used for monitoring or in the mode of operation of the plant as a result of any substantial changes in the type of fuel used therein, the occupier shall inform the local authority as soon as any such change is made.

8. The occupier shall inform the local authority immediately whenever a malfunction or breakdown occurs in the emission abatement equipment installed for the purposes of ensuring compliance with an emission limit value.

9. (1) Where measurements are carried out on a continuous basis, the emission limit values set out in a licence shall be deemed to have been complied with if the results for operating hours within a calendar year indicate that none of the calendar monthly mean values exceeds the said emission limit values and 97% of all the 48 hourly mean values for emissions of sulphur dioxide and dust and 95% of all the 48 hourly mean values for emissions of oxides of nitrogen do not exceed 110% of the respective emission limit values.

(2) Where discontinuous measurements or other appropriate determination procedures are carried out, the emission limit values specified in these Regulations shall be deemed to have been complied with if the results of each of the series of measurements or other procedures do not exceed the said emission limit values.

(3) Where rates of desulphurisation apply to a combusion plant pursuant to article 6 (2) the respective rates shall be deemed to have been complied with if the evaluation of the results of measurements or other determination procedures indicates that either each calendar monthly mean value or the mean of the monthly values over the period of operation of the plant achieves the rate of desulphurisation applying to the plant.

(4) The periods during which a plant starts up or is shut down shall be disregarded.

EIGHTH SCHEDULE

Determination of emission limit values: multi-fuel firing units using two or more fuels simultaneously

S.I. No. 273 of 1992.

AIR POLLUTION ACT, 1987 (COMBUSTION PLANT) REGULATIONS, 1992.

In exercise of the powers conferred on the Minister for the Environment by

sections 5

,

10

,

30

,

31

,

33

,

51

and

54

of the

Air Pollution Act, 1987

(No. 6 of 1987), which said powers are delegated to me by the Environment (Delegation of Ministerial Functions) Order, 1992 (

S.I. No. 136 of 1992

), and for the purposes of giving effect to provisions of the Council Directive of the 24th day of November, 1988, No. 88/609/EEC,

*

I, MARY HARNEY, Minister of State at the Department of the Environment, hereby make the following Regulations:—