Q523. For an LNG import facility, there does not appear to be a category to report normal vent emissions from an LNG storage tank. The vent is metered to monitor methane emissions from boil-off. Please clarify.

A523. Section 98.232(h) does not include boil-off venting from LNG storage tanks as an emission source under LNG import and export equiment; therefore, boil-off venting emissions from LNG storage tanks are not required. However, if the LNG storage tank is blown down to the atmosphere then reporting is required under 98.233(i).

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Source: EPA, Frequently Asked Questions, Petroleum and Natural Gas Systems, July 2011, http://www.epa.gov/climatechange/emissions/downloads11/documents/Subpart-W-additional-faq.pdf.

Approval / Publishing History: Version 1

Expiration : none

Relevant Subpart: W

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