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Table F-1 to Subpart F of Part 98—Slope and Overvoltage Coefficients for the Calculation of PFC Emissions From Aluminum Production

Slope and Overvoltage Coefficients for the Calculation of PFC Emissions From Aluminum Production

  1. CFR
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  3. Title 40
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  5. Chapter I
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  7. Part 98
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  9. Subpart F
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  11. Appendix Table F-1 to Subpart F of Part 98
CorpusDaily eCFR
Displayed edition2026-04-15
Last updated2026-04-15

Table F-1 to Subpart F of Part 98—Slope and Overvoltage Coefficients for the Calculation of PFC Emissions From Aluminum Production

TechnologyCF4 slope coefficient

[(kg CF4/metric ton Al)/(AE-Mins/cell-day)]		CF4 overvoltage coefficient

[(kg CF4/metric ton Al)/(mV)]		Weight fraction C2 F6/CF4

[(kg C2 F6/kg CF4)]
Center Worked Prebake (CWPB)0.1431.160.121
Side Worked Prebake (SWPB)0.2723.650.252
Vertical Stud Søderberg (VSS)0.092NA0.053
Horizontal Stud Søderberg (HSS)0.099NA0.085

[75 FR 79156, Dec. 17, 2010]