Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
All TitlesTitle 40Chapter IPart 98Subpart FAppendix - Table F-1 to Subpart F of Part 98—Slope and Overvoltage Coefficients for the Calculation of PFC Emissions From Aluminum Production
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Appendix - Table F-1 to Subpart F of Part 98—Slope and Overvoltage Coefficients for the Calculation of PFC Emissions From Aluminum Production
Technology CF4 slope coefficient
[(kg CF4/metric ton Al)/(AE-Mins/cell-day)] 		CF4 overvoltage coefficient
[(kg CF4/metric ton Al)/(mV)] 		Weight fraction C2F6/CF4
[(kg C2F6/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]
authority: 42 U.S.C. 7401-7671q.
source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.
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