Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:8:p1
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 8 (pt 1/2)
Character Range: 363557–366247

8     Gathering pipelines                          7.45 × 10‑4                         1.85 × 10‑6  tonnes CO2‑e /kilometre ‑ hour

       3.73H  Method 3—offshore natural gas production (other than emissions that are vented or flared)

 (1) Method 3 is:
Eij = ∑k (Tik × Nik ×EFijk) × Sij /SDij
where:
Eij is the fugitive emissions (other than emissions that are vented or flared) of gas type (j), being methane or carbon dioxide, from the offshore natural gas production during the year measured in CO2‑e tonnes.
Σk is the total emissions of gas type (j), being methane or carbon dioxide, measured in tonnes of CO2‑e and estimated by summing up the emissions released from each component type (k), if the component type is used in the offshore natural gas production.
EFijk is the emission factor of gas type (j), being methane or carbon dioxide, measured in tonnes of CO2‑e per component‑hour for each component type (k) as determined under subsection (2) or (3), if the component is used in the offshore natural gas production.
Note: Consistent with subsection 3.41(2), emissions associated with any components included in this definition should not be counted under this section if those emissions are also counted as component emissions under another section within this Part.
Tik is:
 (a) if subsection (2) applies—the average hours of operation during the year of the component of each component type (k), if the component is used in the offshore natural gas production; and
 (b) if subsection (3) applies—an engineering estimate of the number of hours in the year the component type (k) was operational as a leaker or non leaker based on the best available data and subsection (4).
Nik is the total number of components of each component type (k) listed if the component type is used in the offshore natural gas production during the year.
Sij is the measured share of gas type (j), being methane or carbon dioxide, in the unprocessed gas (i), by volume, measured in accordance with Division 2.3.3 and the principles in section 1.13.
SDij is the default share of gas type (j) in the unprocessed gas (i), for methane SD is 0.788 and for carbon dioxide SD is 0.02.
 (2) Unless subsection (3) is elected and used for all components under this method,  EFijk, the emission factors for methane (j), for component type (k), are:
 (a) column 3 of an item in the following table specifies the emission factor for methane (j) for a component type (k) specified in column 2 of that item and column 4 of an item in the following table specifies the emission factor for carbon dioxide (j) for a component type (k) specified in column 2 of that item:
Item  Component type (k)  Emission factor