Calculating GHG Emissions. Experimental Furnace Or a Research and You Must Calculate and Report the Development Process Unit Is Not Subject to This Subpart

§ 98.118 40 CFR Ch. I (7–1–10 Edition)

in § 98.113(d), you must maintain § 98.118 Definitions. records of the total amount of each All terms used of this subpart have alloy product produced for the specified reporting period, and the appro- the same meaning given in the Clean priate alloy-product specific emission Air Act and subpart A of this part. factor used to calculate the CH4 emissions.

TABLE K–1 TO SUBPART K OF PART 98—ELECTRIC ARC FURNACE (EAF) CH4 EMISSION FACTORS

CH4 emission factor (kg CH4 per metric ton product) EAF Operation Alloy product produced in EAF Sprinkle- Batch- Sprinkle- charging charging charging a and >750 °C b

Silicon metal ...... 1.5 1.2 0.7 Ferrosilicon 90% ...... 1.4 1.1 0.6 Ferrosilicon 75% ...... 1.3 1.0 0.5 Ferrosilicon 65% ...... 1.3 1.0 0.5 a Sprinkle-charging is charging intermittently every minute. b Temperature measured in off-gas channel downstream of the furnace hood.

Subparts L–M [Reserved] (c) CH4 and N2O combustion emissions from each continuous glass melt- Subpart N—Glass Production ing furnace. You must calculate and report these emissions under subpart C of § 98.140 Definition of the source cat- this part (General Stationary Fuel egory. Combustion Sources) by following the (a) A glass manufacturing facility requirements of subpart C. manufactures flat glass, container (d) CO2, CH4, and N2O emissions from glass, pressed and blown glass, or wool each stationary fuel combustion unit fiberglass by melting a mixture of raw other than continuous glass melting materials to produce molten glass and furnaces. You must report these emis- form the molten glass into sheets, con- sions under subpart C of this part (Gen- tainers, fibers, or other shapes. A glass eral Stationary Fuel Combustion manufacturing facility uses one or Sources) by following the requirements more continuous glass melting fur- of subpart C. naces to produce glass. (b) A glass melting furnace that is an § 98.143 Calculating GHG emissions. experimental furnace or a research and You must calculate and report the development process unit is not subject to this subpart. annual process CO2 emissions from each continuous glass melting furnace § 98.141 Reporting threshold. using the procedure in paragraphs (a) You must report GHG emissions and (b) of this section. under this subpart if your facility con- (a) For each continuous glass melting tains a glass production process and furnace that meets the conditions spec- the facility meets the requirements of ified in § 98.33(b)(4)(ii) or (iii), you must either § 98.2(a)(1) or (2). calculate and report under this subpart the combined process and combustion § 98.142 GHGs to report. CO2 emissions by operating and main- You must report: taining a CEMS to measure CO2 emis- (a) CO2 process emissions from each sions according to the Tier 4 Calcula- continuous glass melting furnace. tion Methodology specified in (b) CO2 combustion emissions from § 98.33(a)(4) and all associated require- each continuous glass melting furnace. ments for Tier 4 in subpart C of this

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part (General Stationary Fuel Combus- part (General Stationary Fuel Combus- tion Sources). tion Sources). (b) For each continuous glass melting (2) Calculate and report the process furnace that is not subject to the re- and combustion CO2 emissions sepa- quirements in paragraph (a) of this sec- rately using the procedures specified in tion, calculate and report the process paragraphs (b)(2)(i) through (b)(2)(vi) of this section. and combustion CO2 emissions from the glass melting furnace by using either (i) For each carbonate-based raw ma- the procedure in paragraph (b)(1) of terial charged to the furnace, obtain this section or the procedure in para- from the supplier of the raw material the carbonate-based mineral mass frac- graphs (b)(2) through (b)(7) of this section. tion, except as specified in paragraph (ii) Determine the quantity of each (c) of this section. carbonate-based raw material charged (1) Calculate and report under this to the furnace. subpart the combined process and com- (iii) Apply the appropriate emission bustion CO2 emissions by operating and factor for each carbonate-based raw maintaining a CEMS to measure CO2 material charged to the furnace, as emissions according to the Tier 4 Cal- shown in Table N–1 to this subpart. culation Methodology specified in (iv) Use Equation N–1 of this section § 98.33(a)(4) and all associated require- to calculate process mass emissions of ments for Tier 4 in subpart C of this CO2 for each furnace:

n ⎛ 2000 ⎞ EMFMEFFEq= ∑ ii⎜ ⎟ ii (. N-1 ) CO2 i⎝ i⎠ i i i=1 2205

Where: CO2 = Annual process CO2 emissions from

ECO2 = Process emissions of CO2 from the fur- glass manufacturing facility (metric tons). nace (metric tons). ECO2i = Annual CO2 emissions from glass n = Number of carbonate-based raw mate- melting furnace i (metric tons). rials charged to furnace. k = Number of continuous glass melting fur- MFi = Annual average mass fraction of car- naces. bonate-based mineral i in carbonate-based raw material i (percentage, expressed as a (vi) Calculate and report under sub- decimal). part C of this part (General Stationary Mi = Annual amount of carbonate-based raw Fuel Combustion Sources) the combus- material i charged to furnace (tons). tion CO2 emissions in the glass furnace 2000/2205 = Conversion factor to convert tons according to the applicable require- to metric tons. ments in subpart C. EFi = Emission factor for carbonate-based raw material i (metric ton CO2 per metric (c) As an alternative to data provided ton carbonate-based raw material as shown by the raw material supplier, a value of in Table N–1 to this subpart). 1.0 can be used for the mass fraction F = Fraction of calcination achieved for car- i (MFi) of carbonate-based mineral i in bonate-based raw material i, assumed to be Equation N–1 of this section. equal to 1.0 (percentage, expressed as a decimal). § 98.144 Monitoring and QA/QC re- (v) You must calculate the total quirements. process CO2 emissions from continuous (a) You must measure annual glass melting furnaces at the facility amounts of carbonate-based raw mate- using Equation N–2 of this section: rials charged to each continuous glass melting furnace from monthly meas- k urements using plant instruments used CO= ∑ E(. Eq N-2 ) 2 CO2 i for accounting purposes, such as cali- i=1 brated scales or weigh hoppers. Total Where: annual mass charged to glass melting

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