401 KAR 61:095 - Existing solvent metal cleaning equipment
RELATES TO: KRS 224.20-100, 224.20-110, 224.20-120, 42 U.S.C. 7401 et seq., 7407, 7408, 7410
NECESSITY, FUNCTION, AND CONFORMITY:
KRS
224.10-100 requires the Environmental and
Public Protection
Section 1. Definitions. As used in this
administrative regulation, all terms not defined in this section shall have the
meaning given to them in
401 KAR
61:001.
(1)
"Affected facility " means cold cleaners, open top vapor degreasers, and
conveyorized degreasers which utilize volatile organic compounds (VOCs) to
remove soluble impurities from metal surfaces.
(2) "Classification date" means June 29,
1979.
(3) "Freeboard height" means,
for a cold cleaner, the distance from the liquid solvent level in the degreaser
tank to the lip of the tank. For a vapor degreaser it means the distance from
the solvent vapor level in the tank to the lip of the tank.
(4) "Freeboard ratio" means the freeboard
height divided by the width of the degreaser.
(5) "Refrigerated chiller" means a second set
of freeboard condenser coils located slightly above the primary condenser coils
which create a cold air blanket above the vapor zone.
(6) "Cold cleaner" means a batch-loaded
degreaser whose solvent is kept below its boiling point.
(7) "Open top vapor degreaser" means a
batch-loaded degreaser whose solvent is heated to its boiling point creating a
solvent vapor zone.
(8)
"Conveyorized degreasers" means a degreaser which is continuously loaded by
means of a conveyor system. Its solvent may be boiling or nonboiling.
(9) "Solvent" means, in this administrative
regulation, VOCs.
Section
2. Applicability. This administrative regulation shall apply to
each affected facility commenced before the classification date defined in
Section 1 of this administrative regulation which is located in a county or
portion of a county which is designated ozone nonattainment, for any
nonattainment classification except marginal, under
401 KAR
51:010.
Section
3. Standard for VOCs. The owner or operator of an affected
facility to which this administrative regulation applies shall install,
maintain and operate the control equipment and observe at all times the
operating requirements which apply to this type of degreaser as specified in
Sections 4, 5, and 6 of this administrative regulation.
Section 4. Cold Cleaners.
(1) Control equipment.
(a) The cleaner shall be equipped with a
cover. If the solvent volatility is greater than fifteen (15) mm Hg measured at
100°F or if the solvent is agitated or heated, then the cover shall be
designed so that it can be easily operated with one (1) hand.
(b) The cleaner shall be equipped with a
drainage facility so that solvent that drains off parts removed from the
cleaner will return to the cleaner. If the solvent volatility is greater than
thirty-two (32) mm Hg measured at 100°F then the drainage facility shall be
internal so that parts are enclosed under the cover while draining. The
drainage facility may be external if the cabinet determines that an internal
type cannot fit into the cleaning system.
(c) A permanent, conspicuous label,
summarizing the operating requirements specified in subsection (2) of this
section shall be installed on or near the cleaner.
(d) If used, the solvent spray shall be a
fluid stream (not a fine, atomized or shower type spray) and at a pressure
which does not cause excessive splashing.
(e) If the solvent volatility is greater than
thirty-two (32) mm Hg measured at 100°F or if the solvent is heated above
120°F, then one (1) of the following control devices shall be used:
1. Freeboard that gives a freeboard ratio
greater than or equal to seven-tenths (0.7).
2. Water cover (solvent shall be insoluble in
and heavier than water).
3. Other
systems of equivalent control, such as a refrigerated chiller or carbon
adsorption.
(2)
Operating requirements.
(a) Waste solvent
shall not be disposed of or transferred to another party so that greater than
twenty (20) percent by weight of the waste solvent can evaporate into the
atmosphere. Waste solvent shall be stored only in covered containers.
(b) Degreaser cover shall be closed if not
handling parts in the cleaner.
(c)
Cleaned parts shall be drained until dripping ceases (fifteen (15) seconds is
usually necessary).
Section
5. Open Top Vapor Degreasers.
(1) Control equipment.
(a) The degreaser shall be equipped with a
cover that can be opened and closed easily without disturbing the vapor
zone.
(b) The degreaser shall be
equipped with the following safety switches:
1. Condenser flow switch and thermostat to
shut off sump heat if condenser coolant either is not circulating or is too
warm.
2. Spray safety switch to
shut off spray pump if the vapor level drops more than four (4) inches below
the bottom condenser coil in order to prevent spraying above the vapor
level.
3. Vapor level control
thermostat which shuts off sump heat if the vapor zone rises above the design
level.
4. Equivalent safety systems
as approved on a case-by-case basis by the cabinet .
(c) The degreaser shall be equipped with at
least one (1) of the following major control devices:
1. Freeboard with freeboard ratio greater
than or equal to 0.75, and if the degreaser opening is greater than ten (10)
square feet, the cover shall be powered or mechanically assisted.
2. Refrigerated chiller.
3. Enclosed design so that the cover or door
opens only when the dry part is actually entering or exiting the
degreaser.
4. Carbon adsorption
system, with ventilation greater than or equal to fifty (50) cfm/square foot of
air/vapor interface area (if cover is open), and exhausting less than
twenty-five (25) ppm by volume solvent averaged over one (1) complete
adsorption cycle.
5. Control system
demonstrated to have control efficiency equivalent to or better than any of the
above.
(d) A permanent,
conspicuous label, summarizing the operating procedures specified in subsection
(2) of this section shall be installed on or near the degreaser.
(2) Operating requirements.
(a) The cover shall be closed at all times
unless processing work loads through the degreaser.
(b) Solvent carryout shall be minimized by
the following measures:
1. Parts shall be
racked so that entrainment of solvent is avoided and full drainage is
accomplished.
2. Parts shall be
moved in and out of the degreaser at vertical speed less than eleven (11)
ft./min.
3. The work load in the
vapor zone shall be degreased until condensation ceases (thirty (30) seconds or
more is usually necessary).
4. Any
pools of solvent on the cleaned parts shall be tipped out before
removal.
5. Parts shall be allowed
to dry within the degreaser above the vapor zone until visually dry (fifteen
(15) seconds is usually necessary).
(c) Porous or absorbent materials such as
cloth, leather, wood, or rope shall not be degreased.
(d) Work loads shall not occupy more than
half of the degreaser's open top area.
(e) Spraying shall not be allowed above the
vapor level.
(f) Solvent leaks
shall be repaired immediately or shut down the degreaser.
(g) Waste solvent shall not be disposed of or
transferred to another party so that greater than twenty (20) percent by weight
of the waste solvent can evaporate into the atmosphere. Waste solvent shall be
stored only in closed containers.
(h) Exhaust ventilation shall not exceed
sixty-five (65) cfm per square foot of degreaser area unless necessary to meet
OSHA requirements or control device requirements. Ventilation fans shall not be
used near the degreaser opening.
(i) Water shall not be visually detectable in
the solvent exiting the water separator.
Section 6. Conveyorized Degreasers.
(1) Control equipment.
(a) A conveyorized degreaser shall be
enclosed for work load entrances and exits.
(b) The degreaser shall be equipped with a
drying tunnel or another means such as rotating baskets sufficient to prevent
cleaned parts from carrying out solvent liquid or vapor.
(c) Minimized openings. Entrances and exits
shall silhouette work loads so that the average clearance between the largest
parts and the edge of the degreaser opening is either less than four (4) inches
or less than ten (10) percent of the width of the opening.
(d) Downtime covers. The degreaser shall be
equipped with covers for closing off the entrance and exit during shutdown
hours.
(e) If the degreaser has an
air/solvent interface area or an air/vapor interface area equal to or greater
than twenty (20) square feet, it shall be equipped with at least one (1) of the
following major control devices:
1.
Refrigerated chiller.
2. Carbon
adsorption system with ventilation greater than or equal to fifty (50)
cfm/square foot of air/vapor interface area (when downtime covers are open) and
exhausting less than twenty-five (25) ppm of solvent by volume averaged over a
complete adsorption cycle.
3. A
system demonstrated to have a control efficiency equivalent to or better than
either of the above.
(f)
If the degreaser is a vapor type, it shall be equipped with the following
safety switches:
1. Condenser flow switch and
thermostat which will shut off the sump heat if coolant is either not
circulating or is too warm.
2.
Spray safety switch which will shut off the spray pump or conveyor if the vapor
level drops more than four (4) inches below the bottom condenser coil in order
to prevent spraying above the vapor level.
3. Vapor level control thermostat which will
shut off sump heat if the vapor level rises above the design level.
4. Equivalent safety systems as approved on a
case-by-case basis by the cabinet .
(g) A permanent, conspicuous label,
summarizing the operating procedures specified in subsection (2) of this
section shall be installed on or near the degreaser.
(2) Operating requirements.
(a) Exhaust ventilation shall not exceed
sixty-five (65) cfm per square foot of degreaser opening unless necessary to
meet OSHA requirements or control device requirements. Work place fans shall
not be used near the degreaser opening.
(b) Solvent carryout shall be minimized by
the following measures:
1. Parts shall be
racked so that entrainment of solvent is avoided and full drainage is
accomplished.
2. Vertical conveyor
speed shall be maintained at less than eleven (11) ft/min.
(c) Waste solvent shall not be disposed of or
transferred to another party in a way that greater than twenty (20) percent by
weight of the waste solvent can evaporate into the atmosphere. Waste solvent
shall be stored only in closed containers.
(d) Solvent leaks shall be repaired
immediately or the degreaser shut down.
(e) Water shall not be visually detectable in
the solvent exiting the water separator.
(f) Downtime covers shall be placed over
entrances and exits of the degreaser immediately after the conveyor and exhaust
are shut down and removed just before they are started up.
Section 7. Compliance Timetable.
(1) Affected facilities which were subject to
this administrative regulation as in effect on June 29, 1979, shall have
achieved final compliance by July 1, 1981.
(2) The owner or operator of an affected
facility that becomes subject to this administrative regulation on or after
June 24, 1992 shall be required to complete the following:
(a) A final control plan for achieving
compliance with this administrative regulation shall be submitted no later than
three (3) months after the date the affected facility becomes subject to this
administrative regulation.
(b) The
control system contract shall be awarded no later than five (5) months after
the affected facility becomes subject to this administrative
regulation.
(c) On-site
construction or installation of emission control equipment shall be initiated
no later than seven (7) months after the date the affected facility becomes
subject to this administrative regulation.
(d) On-site construction or installation of
emission control equipment shall be completed no later than eleven (11) months
after the date the affected facility becomes subject to this administrative
regulation.
(e) Final compliance
shall be achieved no later than twelve (12) months after the date the affected
facility becomes subject to this administrative regulation.
(f) If an affected facility becomes subject
to this administrative regulation because it is located in a county previously
designated nonurban nonattainment or redesignated in
401 KAR
51:010 after November 15, 1990, final compliance may
be extended to May 31, 1995, and the schedule in paragraphs (a) through (d) of
this subsection adjusted by the cabinet .
Section 8. Exemptions. Any cold cleaners
shall be exempt from Section 4 of this administrative regulation if the
following criteria are met:
(1) The cold
cleaner shall have a remote solvent reservoir;
(2) The solvent used in the cold cleaner
shall not have a vapor pressure that exceeds thirty-three (33) mm Hg measured
at 100°F or be heated above 120°F;
(3) The sink-like work area shall have an
open drain area less than 100 sq. cm.; and
(4) Evidence shall be provided that waste
solvent shall be stored or properly disposed of with minimal loss due to
evaporation.
Notes
STATUTORY AUTHORITY: KRS 224.10-100
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