Statutes, codes, and regulations
Code of Federal Regulations
Title 40 - PROTECTION OF ENVIRONMENTChapter I - ENVIRONMENTAL PROTECTION AGENCYSubchapter C - AIR PROGRAMSPart 98 - MANDATORY GREENHOUSE GAS REPORTING
Subpart DD - ELECTRICAL TRANSMISSION AND DISTRIBUTION EQUIPMENT USE
Section 98.303 - Calculating GHG emissions

40 C.F.R. § 98.303

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Current through October 31, 2024
Section 98.303 - Calculating GHG emissions
(a) Calculate the annual SF6 and PFC emissions using the mass-balance approach in Equation DD-1 of this section:

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where:

Decrease in SF6 Inventory = (pounds of SF6 stored in containers, but not in energized equipment, at the beginning of the year) - (pounds of SF6 stored in containers, but not in energized equipment, at the end of the year).

Acquisitions of SF6 = (pounds of SF6 purchased from chemical producers or distributors in bulk) + (pounds of SF6 purchased from equipment manufacturers or distributors with or inside equipment, including hermetically sealed-pressure switchgear) + (pounds of SF6 returned to facility after off-site recycling).

Disbursements of SF6 = (pounds of SF6 in bulk and contained in equipment that is sold to other entities) + (pounds of SF6 returned to suppliers) + (pounds of SF6 sent off site for recycling) + (pounds of SF6 sent off-site for destruction).

Net Increase in Total Nameplate Capacity of Equipment Operated = (The Nameplate Capacity of new equipment in pounds, including hermetically sealed-pressure switchgear) - (Nameplate Capacity of retiring equipment in pounds, including hermetically sealed-pressure switchgear). (Note that Nameplate Capacity refers to the full and proper charge of equipment rather than to the actual charge, which may reflect leakage).

(b) Use Equation DD-1 of this section to estimate emissions of PFCs from power transformers, substituting the relevant PFC(s) for SF6 in the equation.

40 C.F.R. §98.303