Commission Delegated Regulation (EU) 2019/331Show full title

3. GENERAL METHODS U.K.

3.1. Applicable methods U.K.

The operator shall determine data for the purpose of compiling a baseline data report in accordance with point (a) of Article 4(2) using methods contained in this Annex. Where this Annex does not describe applicable methods for determining a specific data set, the operator shall apply a suitable method, subject to the approval by the competent authority of the monitoring methodology plan in accordance with Article 6. A method shall be deemed suitable where the operator ensures that any metering, analyses, sampling, calibrations and validations for the determination of the specific data set are carried out by applying methods based on corresponding EN standards. Where such standards are not available, the methods shall be based on suitable ISO standards or national standards. Where no applicable published standards exist, suitable draft standards, industry best practice guidelines or other scientifically proven methodologies shall be used, limiting sampling and measurement bias.

3.2. Approach to attributing data to sub-installations U.K.

1. Where data for a specific data set are not available for each sub-installation, the operator shall propose an appropriate method for determining the required data for each individual sub-installation, except for cases referred to in the second and third subparagraphs of Article 10(3). For this purpose, either of the following principles shall be applied depending on which principle yields more accurate results: U.K.

(a)

where different products are produced one after the other in the same production line, inputs, outputs and corresponding emissions shall be attributed sequentially based on the usage time per year for each sub-installation;

(b)

inputs, outputs and corresponding emissions shall be attributed based on the mass or volume of individual products produced or estimates based on the ratio of free reaction enthalpies of the chemical reactions involved or based on another suitable distribution key that is corroborated by a sound scientific methodology.

2. Where several measurement instruments of different quality are contributing to measurement results, either of the following methods shall be used for splitting installation-level data on quantities of materials, fuels, measurable heat or electricity to sub-installations: U.K.

(a)

Determination of the split based on a determination method, such as sub-metering, estimate, correlation, used equally for each sub-installation. Where the sum of the sub-installation data is different from the data determined separately for the installation, a uniform ‘reconciliation factor’ shall be applied for uniform correction to meet the total figure of the installation as follows:

RecF = DInst /Σ DSI

(Equation 1)

where RecF is the reconciliation factor, DInst is the data value determined for the installation as a whole, and DSI are the data values for the different sub-installations. The data for each sub-installation are then corrected as follows:

DSI,corr = DSI × RecF

(Equation 2)

(b)

If only one sub-installation's data are unknown or of lower quality than the data of other sub-installations, known sub-installation data may be subtracted from the total installation data. This method is preferred only for sub-installations which contribute smaller quantities to the installation's allocation.

3.3. Measurement instruments or procedures not under the operator's control U.K.

The operator may make use of measurement systems or analytical procedures outside the operator's own control:

(a)

where the operator does not have their own measurement instrument or analytical procedure available for the determination of a specific data set;

(b)

where determination of a data set by the operator's own measurement instruments or analytical procedures is technically not feasible or would incur unreasonable costs;

(c)

where the operator demonstrates to the satisfaction of the competent authority that the measurement system or analytical procedure outside the operator's control gives more reliable results and is less prone to control risks.

To that end, the operator may revert to one of the following data sources:

(a)

amounts from invoices issued by a trade partner, provided that a commercial transaction between two independent trade partners takes place;

(b)

direct readings from the measurement systems;

(c)

use of empirical correlations provided by a competent and independent body, such as equipment suppliers, engineering providers or accredited laboratories.

3.4. Indirect determination methods U.K.

Where no direct metering or analysis approach is available for a required data set, in particular for cases where net measurable heat is going into different production processes, the operator shall propose the use of an indirect determination method, such as:

(a)

calculation based on a known chemical or physical process, using appropriate accepted literature values for the chemical and physical properties of substances involved, appropriate stoichiometric factors and thermodynamic properties such as reaction enthalpies, as appropriate;

(b)

calculation based on the installation's design data such as the energy efficiencies of technical units or calculated energy consumption per unit of product;

(c)

correlations based on empirical tests for determining estimation values for the required data set from non-calibrated equipment or data documented in production protocols. For this purpose the operator shall ensure that the correlation satisfies the requirements of good engineering practice and that it is applied only to determine values which fall into the range for which it was established. The operator shall evaluate the validity of such correlations at least once a year.