Commission Decision of 18 July 2007 establishing guidelines for the monitoring and reporting of greenhouse gas emissions pursuant to Directive 2003/87/EC of the European Parliament and of the Council (notified under document number C(2007) 3416) (Text with EEA relevance) (2007/589/EC) (repealed)

ANNEX V Activity-specific guidelines for metal ore roasting and sintering installations as listed in Annex I to Directive 2003/87/EC

1. BOUNDARIES AND COMPLETENESS

Metal ore roasting, sintering or pelletisation installations can form an integral part of steel works with a direct technical connection to coke ovens and installations for the production of pig iron and steel including continuous casting. Thus an intensive energy and material exchange (e.g. blast furnace gas, coke oven gas, coke and limestone) takes place in regular operation. If the installation's permit according to Articles 4, 5 and 6 of Directive 2003/87/EC encompasses the entire steel works and not solely the roasting or sintering installation, the CO₂ emissions may also be monitored for the integrated steel works as a whole. In such cases the mass-balance approach (Section 2.1.1 of this Annex) may be used.

If waste gas scrubbing is carried out at the installation and the resulting emissions are not calculated as part of the installation's process emissions, they shall be calculated in accordance with Annex II.

2. DETERMINATION OF CO₂ EMISSIONS

In metal ore roasting, sintering or pelletisation installations, CO₂ emissions result from the following emission sources and source streams:

• raw materials (calcination of limestone, dolomite and carbonatic iron ores, e.g. FeCO₃),

• conventional fuels (natural gas and coke/coke breeze),

• process gases (e.g. coke oven gas (COG) and blast furnace gas (BFG)),

• process residues used as input material including filtered dust from the sintering plant, the converter and the blast furnace,

• other fuels,

• waste gas scrubbing.

2.1. CALCULATION OF CO₂ EMISSIONS

In case an ore roasting, sintering or pelletisation installation is part of an integrated steelworks, the operator may calculate emissions:

(a)

for the integrated steelworks as a whole, using the mass-balance approach; or

(b)

for the ore roasting, sintering or pelletisation installation as individual activity of the integrated steelworks.

2.1.1. MASS-BALANCE APPROACH

The mass-balance approach shall consider all carbon in inputs, stocks, products and other exports from the installation to determine the level of emissions of greenhouse gases over the reporting period, using the following equation:

CO₂ emissions [tCO₂] = (input – products – export – stock changes) * conversion factor CO₂/C

With:

• input [tC]: all carbon entering the boundaries of the installation,

• products [tC]: all carbon in products and materials, including by-products, leaving the boundaries of the installation,

• export [tC]: carbon exported from the boundaries of the installation, e.g. discharged to sewer, deposited into landfill or through losses. Export does not include the release of greenhouse gases into the atmosphere,

• stock changes [tC]: stock increases of carbon within the boundaries of the installation.

The calculation shall then be as follows:

CO₂ emissions [tCO₂] = (Σ (activity data_input * carbon content_input) – Σ (activity data_products * carbon content_products) – Σ (activity data_export * carbon content_export) – Σ (activity data_{stock changes} * carbon content_{stock changes})) * 3,664

With:

(a) activity data

The operator shall analyse and report the mass flows into and from the installation and respective stock changes for all relevant fuels and materials separately. Where the carbon content of a mass flow is usually related to energy content (fuels), the operator may determine and use the carbon content related to the energy content [tC/TJ] of the respective mass flow for the calculation of the mass balance.

Tier 1

Activity data over the reporting period are determined with a maximum uncertainty of less than ±7,5 %.

Tier 2

Activity data over the reporting period are determined with a maximum uncertainty of less than ± 5 %.

Tier 3

Activity data over the reporting period are determined with a maximum uncertainty of less than ±2,5 %.

Tier 4

Activity data over the reporting period are determined with a maximum uncertainty of less than ±1,5 %.

(b) carbon content

Tier 1

The carbon content of input or output streams is derived from standard emission factors for fuels or materials named in Section 11 of Annex I or the Annexes IV-X. The carbon content is derived as follows:

Tier 2

The operator applies country-specific carbon content for the respective fuel or material as reported by the respective Member State in its latest national inventory submitted to the Secretariat of the United Nations Framework Convention on Climate Change.

Tier 3

The carbon content of input or output stream shall be derived following the provisions of Section 13 of Annex I in respect to representative sampling of fuels, products and by-products, the determination of their carbon contents and biomass fraction.

2.1.2. COMBUSTION EMISSIONS

Combustion processes that take place at metal ore roasting, sintering or pelletization installations where fuels are not used as reducing agents or do not stem from metallurgical reactions shall be monitored and reported in accordance with Annex II.

2.1.3. PROCESS EMISSIONS

During calcination on the grate CO₂ is released from the input materials, i.e. the raw mix (commonly from calcium carbonate) and from reemployed process residues. For each type of input material used the amount of CO₂ shall be calculated as follows:

(a) activity data

Tier 1

Amounts [t] of carbonate input material [t_CaCO3, t_MgCO3 or t_CaCO3-MgCO3] and process residues used as input material in the process over a reporting period by the operator or his suppliers with a maximum uncertainty of less than ±5,0 %.

Tier 2

Amounts [t] of carbonate input material [t_CaCO3, t_MgCO3 or t_CaCO3-MgCO3] and process residues used as input material employed in the process over a reporting period by the operator or his suppliers with a maximum uncertainty of less than ±2,5 %.

(b) emission factor

Tier 1

For carbonates, use of stoichiometric ratios given in the following Table 1:

Table 1

Stoichiometric emission factors

Emission factor
CaCO3	0,44 tCO2/t CaCO3
MgCO3	0,522 tCO2/t MgCO3
FeCO3	0,38 tCO2/t FeCO3

These values shall be adjusted for the respective moisture and gangue content of the applied carbonate material.

For process residues, activity-specific factors shall be determined according to the provisions of Section 13 of Annex I.

(c) conversion factor

Tier 1

Conversion factor: 1,0.

Tier 2

Activity-specific factors determined according to the provisions of Section 13 of Annex I, determining the amount of carbon in the sinter produced and in filtered dust. In case filtered dust is reemployed in the process, the amount of carbon [t] contained shall not be accounted for in order to avoid double counting.

2.2. MEASUREMENT OF CO₂ EMISSIONS

The measurement guidelines contained in Annex I and Annex XII shall be applied.