- Table W-5A to Subpart W of Part 98—Default Methane Leaker Emission Factors for Liquefied Natural Gas (LNG) Storage
LNG storage | Emission 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) | Valve | 1.19 | 0.23 | Pump Seal | 4.00 | 0.73 | Connector | 0.34 | 0.11 | Other 1 | 1.77 | 0.99 | Valve 2 | 14.84 | 9.51 | Connector | 5.59 | 3.58 | Open-Ended Line | 17.27 | 11.07 | Pressure Relief Valve | 39.66 | 25.42 | Meter and Instrument | 19.33 | 12.39 | Other 3 | 4.1 | 2.63 |
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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).