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Regulations Limiting Carbon Dioxide Emissions from Natural Gas-fired Generation of Electricity (SOR/2018-261)

Regulations are current to 2020-11-02 and last amended on 2019-01-01. Previous Versions

Quantification Rules (continued)

CO2 Emissions

Quantification Methods

Marginal note:Choice of method

 The quantity of CO2 emissions resulting from the combustion of fossil fuels in a unit in a calendar year must be determined

  • (a) in accordance with section 13 or 14, using a CEMS; or

  • (b) in accordance with sections 17 and 18, using a fuel-based method.

Continuous Emission Monitoring System

Marginal note:Unit not combusting biomass

 Subject to section 15, the quantity of CO2 emissions resulting from combustion of fossil fuels in a unit that does not combust biomass that is measured using a CEMS must be calculated in accordance with sections 7.1 to 7.7 of the Reference Method.

Marginal note:Unit combusting biomass

  •  (1) Subject to section 15, the quantity of CO2 emissions resulting from the combustion of fossil fuels in a unit combusting biomass in a calendar year that is measured using a CEMS must be determined in accordance with the following formula:

    Eu × (Vff / VT) – Es

    where

    Eu
    is the quantity of CO2 emissions, expressed in tonnes, from the unit, “u”, during the calendar year from the combustion of fuel, as measured by the CEMS, and calculated in accordance with sections 7.1 to 7.7 of the Reference Method;
    Vff
    is the volume of CO2 emissions released from combustion of fossil fuel in the unit during the calendar year, expressed in standard m3 and determined in accordance with the following formula:
    The formula is the sum of the products resulting from the multiplication of Qi, Fc,i and HHVi for each fossil fuel type “i”.

    where

    Qi
    is the quantity of fossil fuel type “i” combusted in the unit during the calendar year, determined
    • (a) for a gaseous fuel, in the same manner used in the determination of Vf in the formula set out in paragraph 18(1)(a) and expressed in standard m3,

    • (b) for a liquid fuel, in the same manner used in the determination of Vf in the formula set out in paragraph 18(1)(b) and expressed in kL, and

    • (c) for a solid fuel, in the same manner used in the determination of Mf in the formula set out in paragraph 18(1)(c) and expressed in tonnes,

    i
    is the ith fossil fuel type combusted in the unit during the calendar year, where “i” goes from the number 1 to n and where n is the number of fossil fuels so combusted,
    Fc,i
    is the fuel-specific carbon-based F-factor for each fossil fuel type “i” — being the factor set out in Appendix A of the Reference Method, or for fuels not listed, the one determined in accordance with that Appendix — corrected to be expressed in standard m3 of CO2/GJ, and
    HHVi
    is the higher heating value for each fossil fuel type “i” that is measured in accordance with subsection (2), or in the absence of a measured higher heating value, the default higher heating value, set out in column 2 of Schedule 2, for the fuel type, as set out in column 1;
    VT
    is the volume of CO2 emissions released from combustion of fuel — fossil fuel and biomass — in the unit during the calendar year determined in accordance with the following formula:
    The summation of the products of 0.01, CO2w,t and Qw,t for each hour “t”.

    where

    t
    is the tth hour, where “t” goes from the number 1 to n and where n is the total number of hours during which the unit generated electricity in the calendar year,
    CO2w,t
    is the average concentration of CO2 in relation to all gases in the stack emitted from the combustion of fuel in the unit during each hour “t”, during which the unit generated electricity in the calendar year — or, if applicable, a calculation made in accordance with section 7.4 of the Reference Method of that average concentration of CO2 based on a measurement of the concentration of oxygen (O2) in those gases in the stack — expressed as a percentage on a wet basis, and
    Qw,t
    is the average volumetric flow during that hour, measured on a wet basis by the stack gas volumetric flow monitor, expressed in standard m3; and
    Es
    is the quantity of CO2 emissions, expressed in tonnes, that is released from the use of sorbent to control the emission of sulphur dioxide from the unit during the calendar year, determined in accordance with the following formula:

    S × R × (44/MMs)

    where

    S
    is the quantity of sorbent material, such as calcium carbonate (CaCO3), expressed in tonnes,
    R
    is the stoichiometric ratio, on a mole fraction basis, of CO2 released on usage of one mole of sorbent material, which is equal to 1 if the sorbent material is CaCO3, and
    MMs
    is the molecular mass of the sorbent material, which is equal to 100 if the sorbent material is CaCO3.
  • Marginal note:Higher heating value

    (2) The higher heating value of a fuel is to be measured

    • (a) for a gaseous fuel,

      • (i) in accordance with whichever of the following standards that applies:

        • (A) ASTM D1826 - 94(2017), entitled Standard Test Method for Calorific (Heating) Value of Gases in Natural Gas Range by Continuous Recording Calorimeter,

        • (B) ASTM D3588 - 98(2017), entitled Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels,

        • (C) ASTM D4891 - 13, entitled Standard Test Method for Heating Value of Gases in Natural Gas and Flare Gases Range by Stoichiometric Combustion,

        • (D) Gas Processors Association Standard 2172 - 14, entitled Calculation of Gross Heating Value, Relative Density, Compressibility and Theoretical Hydrocarbon Liquid Content for Natural Gas Mixtures for Custody Transfer, and

        • (E) Gas Processors Association standard 2261 - 13, entitled Analysis for Natural Gas and Similar Gaseous Mixtures by Gas Chromatography, or

      • (ii) by means of a direct measuring device that measures the higher heating value of the fuel, but if the measuring device provides only lower heating values, those lower heating values must be converted to higher heating values; and

    • (b) for a liquid fuel that is

      • (i) an oil or a liquid fuel derived from waste, in accordance with

        • (A) ASTM D240 - 17, entitled Standard Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter, or

        • (B) ASTM D4809 - 13, entitled Standard Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter (Precision Method), and

      • (ii) any other liquid fuel type, in accordance with an applicable ASTM standard for the measurement of the higher heating value of the fuel type or, if no such ASTM standard applies, in accordance with an applicable internationally recognized method.

Marginal note:Multiple CEMS per unit

  •  (1) For the purposes of sections 13 and 14, the total quantity of CO2 emissions from a unit equipped with multiple CEMS is determined by adding together the quantity of emissions measured for each CEMS.

  • Marginal note:Units sharing common stack

    (2) If a unit is located at a facility where there is one or more other units and a CEMS measures emissions from that unit and other units at a common stack rather than at the exhaust duct of that unit and of each of those other units that brings those emissions to the common stack, then the quantity of emissions attributable to that unit is determined based on the ratio of the heat input of that unit to the total of the heat input of that unit and of all of those other units sharing the common stack in accordance with the following formula:

    The formula for determining the quantity of emissions attributable to a unit that shares a common emissions stack is the product of the multiplication of E and the quotient of the following two sums: the sum of the product resulting from the multiplication of Quj and HHVuj for each fuel type “j” combusted in that unit “u” during the calendar year and the sum, for each unit “i” that shares a common stack, of the sum of the product resulting from the multiplication of Qij and HHVij for each fuel type “j” combusted during the calendar year.

    where

    Qu,j
    is the quantity of fuel type “j” combusted in that unit “u” during the calendar year, determined
    • (a) for a gaseous fuel, in the same manner as the one used in the determination of Vf in the formula set out in paragraph 18(1)(a) and expressed in standard m3,

    • (b) for a liquid fuel, in the same manner as the one used in the determination of Vf in the formula set out in paragraph 18(1)(b) and expressed in kL, and

    • (c) for a solid fuel, in the same manner as the one used in the determination of Mf in the formula set out in paragraph 18(1)(c) and expressed in tonnes;

    HHVu,j
    is the higher heating value for each fossil fuel type “j” that is combusted in that unit “u” that is measured in accordance with subsection 14(2), or in the absence of a measured higher heating value, the default higher heating value, set out in column 2 of Schedule 2, for the fuel type, as set out in column 1;
    j
    is the jth fuel type combusted during the calendar year in a unit where “j” goes from the number 1 to y and where y is the number of those fuel types;
    Qi,j
    the quantity of fuel type “j” combusted in each unit “i” during the calendar year, determined for a gaseous fuel, a liquid fuel and a solid fuel, respectively, in the manner set out in the description of Quj;
    HHVi,j
    is the higher heating value for each fossil fuel type “j” that is combusted in that unit “i” that is measured in accordance with subsection 14(2), or in the absence of a measured higher heating value, the default higher heating value, set out in column 2 of Schedule 2, for the fuel type, as set out in column 1;
    i
    is the ith unit, where “i” goes from the number 1 to x, and where x is the number of units that share a common stack; and
    E
    is the quantity of CO2 emissions, expressed in tonnes, from the combustion of all fuels in all the units that share a common stack during the calendar year, measured by a CEMS at the common stack, and calculated in accordance with sections 7.1 to 7.7 of the Reference Method.
 
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