Washington Administrative Code › Title 463 - Energy Facility Site Evaluation Council › Chapter 463-80 - Carbon dioxide mitigation program for thermal electric generating facilities › Section 463-80-050 - Calculating total carbon dioxide emissions to be mitigated

Current through Register Vol. 24-14, July 15, 2024
(1) Step 1 is to calculate the total quantity of
				CO2. The total quantity of CO2 is
				referred to as the maximum potential emissions of CO2.
				The maximum potential emissions of CO2 is defined as the
				annual CO2 emission rate. The annual
				CO2 emission rate is derived by the following formula
				unless a differing analysis is necessary or appropriate for the electric
				generating process and type of equipment:
CO2rate
=
Fs x
							 Ks
x
Ts
+
F1 x
							 K1
x
T1
+
F2 x
							 K2
x
T2
F3 x
							 K3
x
T3. . .
Fn x
							 Kn
x
Tn
2204.6
2204.6
2204.6
2204.6
2204.6
where:
CO2rate
=
Maximum potential emissions in metric tons per
							 year
F1 - n
=
Maximum design fuel firing rate in MMBtu/hour
							 calculated as manufacturer or designer's guaranteed total net station
							 generating capability in MWe times the new equipment heat rate in Btu/MWe.
							 Determined based on higher heating values of fuel
K1 - n
=
Conversion factor for the fuel(s) being evaluated in
							 lb CO2/MMBtu for fuel Fn
T1 - n
=
Hours per year fuel Fn is
							 allowed to be used. The default is 8760 hours unless there is a limitation on
							 hours in a site certification agreement
Fs
=
Maximum design supplemental fuel firing rate in
							 MMBtu/hour, at higher heating value of the fuel
Ks
=
Conversion factor for the supplemental fuel being
							 evaluated in lb CO2/MMBtu for fuel
							 Fn given fuel
Ts
=
Hours per year supplemental fuel
							 Fn is allowed. The default is 8760 hours unless there is
							 a limitation on hours in a site certification agreement
(a) When there are multiple new fossil-fueled electric
				generating units, the above calculation will be performed for each unit and the
				total CO2 emissions of all units will be summed.
(b) When a unit or facility is allowed to use multiple fuels,
				the maximum allowed hours on the highest CO2 producing
				fuels will be utilized for each fuel until the total of all hours per fuel add
				up to the allowable annual hours.
(c) When a new unit or facility is allowed to use multiple
				fuels without restriction, this calculation will be performed assuming that the
				fuel with the highest CO2 emission rate is used 100% of
				the time.
(d) When the annual operating hours are restricted for any
				reason, the total of all T1 - n hours equals the annual
				allowable hours of operation in the site certification agreement.
(e) Fuel to CO2 conversion factors
				(derived from the EPA's AP-42, Compilation of Air Pollutant Emission
				Factors):
Fuel
Kn lb/MMBtu
#2 oil
158.16
#4 oil
160.96
#6 oil
166.67
Lignite
287.50
Sub-bituminous coal
267.22
Bituminous coal, low volatility
232.21
Bituminous coal, medium volatility
241.60
Bituminous coal, high volatility
262.38
Natural gas
117.6
Propane
136.61
Butane
139.38
Petroleum coke
242.91
Coal coke
243.1
Other fossil fuels
Calculate based on carbon content of the fossil fuel
							 and application of the gross heat content (higher heating value) of the
							 fuel
Nonfossil fuels
00.00