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{longname} Q517. Do I have to calculate emissions from operational LNG storage tank venting at LNG storage facilities or LNG import or export terminals? Also, the equipment listed to be surveyed for leaks does not include pressure relief valves, an emissions source listed for other facility types in 98.233(q). Am I required to report these emissions? {longname} |
A517.
...
Regarding
...
your
...
first
...
question:
...
sections
...
98.232(g)
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and
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98.232(h)
...
do
...
no
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include
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venting
...
from
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LNG
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storage
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tanks
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as
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an
...
emission
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source;
...
therefore
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venting
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emissions
...
from
...
LNG
...
storage
...
tank
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are
...
not
...
required
...
for
...
LNG
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storage
...
or
...
for
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LNG
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import
...
and
...
export
...
equipment.
...
However,
...
if
...
the
...
LNG
...
storge
...
tank
...
is
...
blown
...
down
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to
...
atmosphere,
...
then
...
section
...
98.232(h)
...
does
...
require
...
reporting.
...
To
...
answer
...
the
...
second
...
question
...
about
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pressure
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relief
...
valves,
...
Sections
...
98.233(q)(6)
...
and
...
(7)
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state
...
that
...
emission
...
factors
...
for “…equipment leaks detected from valves, pump seals, connectors, and other” shall be used from Tables W-5 and W-6 in the rule. A pressure relief valve is a special type of valve and falls in the category of "other," so this emission source is included in the leak detection survey and required to be reported.
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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 2, answer revised / corrected and approved by M Eaddy 5/7/12
Expiration : none
Relevant Subpart: W
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