Calculating GHG emissions.

§ 98.453 Calculating GHG emissions.

(a) For each electrical equipment manufacturer or refurbisher, estimate the annual SF6 and PFC emissions using the mass-balance approach in Equation SS–1 of this section:

er01de10.056.gif

where:

Decrease in SF6 Inventory = (Pounds of SF6 stored in containers at the beginning of the year) − (Pounds of SF6 stored in containers at the end of the year). Acquisitions of SF6 = (Pounds of SF6 purchased from chemical producers or suppliers in bulk) + (Pounds of SF6 returned by equipment users) + (Pounds of SF6 returned to site after off-site recycling). Disbursements of SF6 = (Pounds of SF6 contained in new equipment delivered to customers) + (Pounds of SF6 delivered to equipment users in containers) + (Pounds of SF6 returned to suppliers) + (Pounds of SF6 sent off site for recycling) + (Pounds of SF6 sent off-site for destruction).

(b) Use the mass-balance method in paragraph (a) of this section to estimate emissions of PFCs associated with the manufacture or refurbishment of power transformers, substituting the relevant PFC(s) for SF6 in Equation SS–1 of this section.

(c) Estimate the disbursements of SF6 or PFCs sent to customers in new equipment or cylinders or sent off-site for other purposes including for recycling, for destruction or to be returned to suppliers using Equation SS–2 of this section:

er01de10.057.gif

where:

DGHG = The annual disbursement of SF6 or PFCs sent to customers in new equipment or cylinders or sent off-site for other purposes including for recycling, for destruction or to be returned to suppliers. Qp = The mass of the SF6 or PFCs charged into equipment or containers over the period p sent to customers or sent off-site for other purposes including for recycling, for destruction or to be returned to suppliers. n = The number of periods in the year.
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