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{longname} Q702. If a startup, shutdown, or malfunction (SSM) event lasts for several days, should the flare flow term in Equation Y-3 include the cumulative flow for the entire event or only the cumulative flow for the day(s) for which the 500,000 scf/day threshold was exceeded? {longname} |
A702.While
...
the
...
threshold
...
is
...
assessed
...
on
...
a
...
per
...
day
...
basis,
...
the
...
flare
...
flow
...
term,
...
(Flare
...
SSM)p, in Equation Y-3
...
is
...
defined
...
on
...
a
...
per
...
“event” basis.
...
If
...
a
...
SSM
...
flaring
...
event
...
exceeds
...
500,000
...
scf
...
in
...
any
...
“day” then
...
the
...
cumulative
...
flare
...
gas
...
flow
...
due
...
to
...
the
...
entire
...
SSM
...
event
...
should
...
be
...
included
...
in
...
the
...
flare
...
flow
...
term,
...
(Flare
...
SSM)p. For example,
...
if
...
a
...
SSM
...
event
...
spanned
...
two
...
separate
...
days
...
and
...
the
...
flow
...
due
...
to
...
the
...
event
...
was
...
1,000,000
...
scf
...
on
...
Day
...
1
...
and
...
400,000
...
scf
...
on
...
Day
...
2,
...
this
...
event
...
would
...
exceed
...
the
...
reporting
...
threshold
...
because
...
it
...
had
...
at
...
least
...
one
...
consistently
...
designated
...
24-hour
...
period
...
(
...
“day”)
...
in
...
which
...
the
...
cumulative
...
flow
...
exceeded
...
500,000
...
scf.
...
This
...
would
...
be
...
reported
...
as
...
one
...
event
...
in
...
Equation
...
Y-3
...
and
...
the
...
entire
...
1,400,000
...
scf
...
flow
...
for
...
the
...
event
...
would
...
be
...
used
...
for
...
the
...
(Flare
...
SSM)p term for this event. See the table below for some additional examples.
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{info}
Source: A. McKittrick, 11/27/2012 (Subpart Y_Flare SSM FAQ_final_2.docx)
Approval / Publishing History: Version 1
Expiration: none
Relevant Subparts: Subpart Y
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