Draft
Summary
of
Potential
Control
Options
for
Halogenated
Solvent
Cleaners
(
09/
19/
05)

[
a]
­
Percent
reductions
are
reductions
beyond
MACT.

[
b]
­
2004/
2005
dollars.
Includes
annualized
capital
costs,
annual
operational
costs,
and
solvent
cost
savings.
Applicability
Control
Option
DRAFT
Percent
Reduction
in
Solvent
Emissions/
MIR
Cancer
Risk
[
a]
DRAFT
Annual
Costs
Per
Unit
[
b]
Considerations/
Limitations
OTVC
INLINE
WEB
COLD
1.
Solvent
Switching
A.
PCE
to
TCE
77%
($
5,125)
TCE
is
a
VOC.
TCE
may
not
meet
cleaning
requirements.
X
X
X
X
B.
TCE
to
MC
70%
$
2,825
MC
has
OSHA
requirements.
MC
may
not
meet
cleaning
requirements.
X
X
X
X
C.
PCE
to
MC
93%
($
1,719)
MC
has
OSHA
requirements.
MC
may
not
meet
cleaning
requirements.
X
X
X
X
2.
Vacuum
to
Vacuum
Cleaning
Machine
97%
$
19,386
Cost
varies
with
size.
Based
on
average
size.
Excludes
secondary
savings.
May
not
be
appropriate
for
some
high
throughput
operations.
Not
appropriate
for
web
cleaning.

Large
capital
expenditure
of
$
200,000
to
$
1,000,000
depending
on
size.
X
SOME
X
3.
Retrofit
Freeboard
Extensions
A.
1.5
freeboard
ratio,
working
mode
cover,
freeboard
refrigeration
device,

and
hoist.
50%
1
m2
­
$
555
4
m2
 
($
4,560)
Solvent
savings
based
on
average
OTVC
emissions
from
risk
analysis.
X
B.
1.5
freeboard
ratio
with
a
cover
30%
1
m2
 
($
782)

4
m2
 
($
2,940)
Solvent
savings
based
on
average
OTVC
emissions
from
risk
analysis.
Assumed
that
OTVC
already
has
a
0.75
freeboard
ratio.
X
SOME
X
4.
New
Open
Top
Vapor
Cleaner
(
OTVC)

A.
New
OTVC
with
1.5
freeboard,

freeboard
refrigeration
device,

superheated
vapor,
cover
30%
$
7,672
Superheated
vapor
and
freeboard
refrigeration
device
used
to
meet
MACT
requirements.
Control
above
MACT
is
0.75
freeboard
ratio
to
1.5
freeboard
ratio.
Solvent­
air
interface
area
of
only
0.93
m2.
X
B.
New
OTVC
with
1.2
freeboard
ratio,

freeboard
refrigeration
device
and
hoist
10%
$
5,601
A
base
machine
that
barely
exceeds
MACT
equip.
req.

Solvent­
air
interface
area
of
only
0.85
m2.
Machine
being
replaced
was
assumed
to
have
a
freeboard
refrigeration
device,

a
1.0
freeboard
ratio
and
a
hoist
that
can
be
used
with
new
machine.
Therefore,
emission
reduction
and
operational
costs
only
reflect
the
increasing
freeboard
height
from
1.0
to
1.2.
X
