Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:8:p3
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 8 (pt 3/4)
Character Range: 414297–417058

Compendium.

       3.78  Method 3—natural gas transmission (other than flaring)

        (1) Method 3 is:
Ej = ∑k (Tk × Nk ×EFjk)
where:
Eij is the fugitive emissions (other than flaring) of gas type (j) measured in CO2‑e tonnes from the natural gas transmission through the system of pipelines during the year.
Σk is the total emissions of gas type (j) measured in CO2‑e tonnes and estimated by summing up the emissions released from each component type (k) listed in section 6.1.3 of the API Compendium, if the component is used in the natural gas transmission.
Tk is the average hours of operation during the year of the components of each component type (k) listed in section 6.1.3 of the API Compendium, if the component is used in the natural gas transmission during the year.
Nk is the total number of components of each component type (k) listed in section 6.1.3 of the API Compendium if the component type is used in the natural gas transmission during the year.
EFjk is the emission factor of gas type (j) measured in CO2‑e tonnes for each component type (k) listed in 6.1.3 of the API Compendium as determined under subsection (2), where the component is used in the natural gas transmission.
 (2) For EFjk, the emission factors for gas type (j), as natural gas or plant condensate passes through a component type (k), are:
 (a) as listed in Table 6‑18 in section 6.1.3 of the API Compendium, for the component type; or
 (b) as listed in that Compendium for the component type with emission factors adjusted for variations in estimated gas composition, in accordance with that Compendium's Table 6‑18 in section 6.1.3, and the requirements of Division 2.3.3; or
 (c) as listed in that Compendium for the component type with emission factors adjusted for variations in the type of component material estimated in accordance with the results of published research for the crude oil industry and the principles of section 1.13; or
 (d) if the manufacturer of the component supplies component‑specific emission factors for the component type—those factors; or
 (e) estimated using the engineering calculation approach in accordance with section 6.1.3 of the API Compendium.

Division 3.3.7A—Natural gas storage (other than emissions that are vented or flared)

3.78A  Application
  This Division applies to fugitive emissions (other than emissions that are vented or flared) from natural gas storage.

3.78B  Available methods
 (1) Subject to section 1.18 and subsection (3) and (4), one of the following methods must be used for estimating fugitive emissions (other than emissions that are vented or flared) of each gas type, being carbon dioxide and methane, released from the operation of a facility that is constituted by natural gas storage during