40 C.F.R. § Table W-6 to Subpart W of Part 98
Current through October 31, 2024
| Equipment components | Emission factor (scf methane/hour/ component) | ||
| If you survey using Method 21 as specified in § 98.234(a)(2)(i) | If you survey using Method 21 as specified in § 98.234(a)(2)(ii) | If you survey using any of the methods in § 98.234(a)(1), (3), or (5) | |
| Leaker Emission Factors-LNG Storage and LNG Import and Export Equipment-Storage Components and Terminals Components, LNG Service | |||
| Valve | 1.19 | 0.23 | 1.94 |
| Pump Seal | 4.00 | 0.73 | 6.54 |
| Connector | 0.34 | 0.11 | 0.56 |
| Other 1 | 1.77 | 0.99 | 2.9 |
| Leaker Emission Factors-LNG Storage and LNG Import and Export Equipment-Storage Components and Terminals Components, Gas Service | |||
| Valve 2 | 14.84 | 9.51 | 24.2 |
| Connector | 5.59 | 3.58 | 9.13 |
| Open-Ended Line | 17.27 | 11.07 | 28.2 |
| Pressure Relief Valve | 39.66 | 25.42 | 64.8 |
| Meter and Instrument | 19.33 | 12.39 | 31.6 |
| Other 3 | 4.1 | 2.63 | 6.70 |
| Leaker Emission Factors-Natural Gas Distribution-Transmission-Distribution Transfer Station4Components, Gas Service | |||
| Connector | 1.69 | 2.76 | |
| Block Valve | 0.557 | 0.91 | |
| Control Valve | 9.34 | 15.3 | |
| Pressure Relief Valve | 0.27 | 0.44 | |
| Orifice Meter | 0.212 | 0.35 | |
| Regulator | 0.772 | 1.26 | |
| Open-ended Line | 26.131 | 42.7 | |
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) and § 98.232(h)(7) and (8) .
4 Excluding customer meters.
40 C.F.R. §Table W-6 to Subpart W of Part 98