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Electronic Code of Federal Regulations

e-CFR data is current as of November 19, 2019

Title 40Chapter ISubchapter CPart 98Subpart F → §98.66


Title 40: Protection of Environment
PART 98—MANDATORY GREENHOUSE GAS REPORTING
Subpart F—Aluminum Production


§98.66   Data reporting requirements.

In addition to the information required by §98.3(c), you must report the following information at the facility level:

(a) [Reserved]

(b) Type of smelter technology used.

(c) The following PFC-specific information on an annual basis:

(1) Perfluoromethane emissions and perfluoroethane emissions from anode effects in all prebake and all Søderberg electrolysis cells combined.

(2) Anode effect minutes per cell-day (AE-mins/cell-day), anode effect frequency (AE/cell-day), anode effect duration (minutes). (Or anode effect overvoltage factor ((kg CF4/metric ton Al)/(mV/cell day)), potline overvoltage (mV/cell day), current efficiency (%)).

(3) Smelter-specific slope coefficients (or overvoltage emission factors) and the last date when the smelter-specific slope coefficients (or overvoltage emission factors) were measured.

(d) Method used to measure the frequency and duration of anode effects (or overvoltage).

(e) The following CO2-specific information for prebake cells:

(1) Annual anode consumption if using the method in §98.63(g).

(2) Annual CO2 emissions from the smelter.

(f) The following CO2-specific information for Søderberg cells:

(1) Annual paste consumption if using the method in §98.63(g).

(2) Annual CO2 emissions from the smelter.

(g) [Reserved]

(h) Exact data elements required will vary depending on smelter technology (e.g., point-feed prebake or Søderberg) and process control technology (e.g., Pechiney or other).

[74 FR 56374, Oct. 30, 2009, as amended at 75 FR 79156, Dec. 17, 2010; 79 FR 63784, Oct. 24, 2014; 81 FR 89253, Dec. 9, 2016]

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