40 C.F.R. § Table W-5A to Subpart W of Part 98

Current through October 31, 2024
Appendix Table W-5A to Subpart W of Part 98 - [Removed effective 1/1/2025] Default Methane Leaker Emission Factors for Liquefied Natural Gas (LNG) Storage

LNG storageEmission factor
(scf/hour/component)
If you survey using any of the methods in § 98.234(a)(1)
through (6)
If you survey using Method 21 as
specified in
§ 98.234(a)(7)
Leaker Emission Factors-LNG Storage Components, LNG Service
Valve1.190.23
Pump Seal4.000.73
Connector0.340.11
Other11.770.99
Leaker Emission Factors-LNG Storage Components, Gas Service
Valve214.849.51
Connector5.593.58
Open-Ended Line17.2711.07
Pressure Relief Valve39.6625.42
Meter and Instrument19.3312.39
Other34.12.63

1 "Other" equipment type for components in LNG service should be applied for any equipment type other than connectors, pumps, or valves.

2 Valves include control valves, block valves and regulator valves.

3 "Other" equipment type for components in gas service should be applied for any equipment type other than valves, connectors, flanges, open-ended lines, pressure relief valves, and meters and instruments, as specified in § 98.232(g)(6) and (7) .

40 C.F.R. §Table W-5A to Subpart W of Part 98

81 FR 86518 , Nov. 30, 2016
81 FR 86518 , 1/1/2017; 89 FR 42326 , 1/1/2025