Current through August 26, 2024
(1) Except as
provided in sub. (4), each owner or operator of an immersion batch cold solvent
cleaning machine shall comply with one of the following requirements:
(a) Employ a tightly fitting cover on the
machine that shall be closed at all times except during parts entry and
removal, and a water layer that has a minimum thickness of 2.5 centimeters (1.0
inch) on the surface of the solvent within the cleaning machine.
(b) Employ a tightly fitting cover on the
machine that shall be closed at all times except during parts entry and
removal, and a freeboard ratio of 0.75 or greater; and comply with the work and
operational practices specified in sub. (3).
(2) Each owner or operator of a
remote-reservoir batch cold solvent cleaning machine shall employ a tightly
fitting cover over the solvent sump that shall be closed at all times except
during the cleaning of parts and comply with the work and operational practices
specified in sub. (3).
(3) Each
owner or operator of a batch cold solvent cleaning machine complying with sub.
(1)(b) or (2) shall comply with the work and operational practice requirements
specified in pars. (a) to (i), as applicable.
(a) All waste solvent shall be collected and
stored in closed containers. Each closed container may contain a device that
allows pressure relief, but that device may not allow liquid solvent to drain
from the container.
(b) If a
flexible hose or flushing device is used, flushing shall be performed only
within the freeboard area of the solvent cleaning machine.
(c) The owner or operator shall drain solvent
cleaned parts for 15 seconds or until dripping has stopped, whichever is
longer. Parts having cavities or blind holes shall be tipped or rotated while
draining.
(d) The owner or operator
shall ensure that the solvent level does not exceed the fill line.
(e) Spills during solvent transfer shall be
wiped up immediately. The wipe rags shall be stored in covered containers
meeting the requirements of par. (a).
(f) When an air- or pump-agitated solvent
bath is used, the owner or operator shall ensure that the agitator is operated
to produce a rolling motion of the solvent but not observable splashing against
tank walls or parts being cleaned.
(g) The owner or operator shall ensure that,
when the cover is open, the cold cleaning machine is not exposed to drafts
greater than 40 meters per minute (132 feet per minute), as measured between
one and 2 meters (3.3 and 6.6 feet) upwind and at the same elevation as the
tank lip.
(h) Except as provided in
par. (i), sponges, fabric, wood and paper products may not be cleaned.
(i) The prohibition in par. (h)
does not apply to the cleaning of porous materials that are part of
polychlorinated biphenyl (PCB) laden transformers if those transformers are
handled throughout the cleaning process and disposed of in compliance with an
approved PCB disposal permit issued in accordance with the Toxic Substances
Control Act (15
USC 2605).
(3m) Each owner or operator subject to the
requirements of sub. (3) (a) to (h) may request to use measures other than
those described in sub. (3) (a) to (h). The owner or operator shall demonstrate
to the department that the alternative measures will result in equivalent or
better emissions control compared to the measures described in sub. (3) (a) to
(h).
Note: For example, storing solvent and solvent-laden
materials in an enclosed area that is ventilated to a solvent recovery or
destruction device may be considered an acceptable alternative.
(4) Each owner or operator of an
immersion batch cold cleaning machine that is not exempt under s.
NR 423.03(2) (a), (b), (c)
or (h), but is exempt under s.
NR 423.03(2)
(i), shall comply with one of the following
requirements:
(a) Employ a tightly fitting
cover on the machine that shall be closed at all times except during parts
entry and removal, and a water layer that has a minimum thickness of 2.5
centimeters (1.0 inch) on the surface of the solvent within the cleaning
machine; and comply with the work and operational practices specified in sub.
(5).
(b) Employ a tightly fitting
cover on the machine that shall be closed at all times except during parts
entry and removal, and a freeboard ratio of 1.0 or greater; and comply with the
work and operational practices specified in sub. (3).
(5) Each owner or operator of a batch cold
solvent cleaning machine complying with sub. (4) (a) shall comply with the work
and operational practices specified in pars. (a) to (d).
(a) Equip the machine with a facility for
draining cleaned parts, with the drainage facility constructed so that parts
are enclosed under the cover while draining, except that the drainage facility
may be external for applications where an internal type cannot fit into the
cleaning system.
(b) If used,
supply a solvent spray that is a solid fluid stream, not a fine, atomized or
shower type spray, at a pressure that does not cause splashing.
(c) Provide a permanent, conspicuous label,
summarizing the operating requirements.
(d) Provide supervision or instruction
adequate to ensure the operation is conducted in accord with all of the
following:
1. Close the cover whenever parts
are not being handled in the cleaner.
2. Drain the cleaned parts for at least 15
seconds or until dripping ceases.
3. Store waste solvent only in covered
containers and not dispose of waste solvent or transfer it to another person in
such a way as to cause greater than 15% of the waste solvent, by weight, to
evaporate into the ambient air during ozone season, s.
NR 419.04
notwithstanding.
4. Repair solvent
leaks immediately, or shut down the machine until the leaks are repaired.
Note: Subsections (4) and (5) contain pertinent language
previously applicable under s.
NR 423.03(3) and now applicable under
this chapter instead to owners and operators of immersion batch cleaning
machines that use solvents that contain halogenated HAP compounds that are also
VOCs.
(6) Each owner or operator of a new batch
cold cleaning machine shall comply with the initial notification reporting
requirements as described in s.
NR 469.12(1). Each owner or operator of
a batch cold cleaning machine shall comply with the initial statement of
compliance reporting requirements as described in s.
NR 469.12(2). No further reporting or
recordkeeping is required.
(7) Each
owner or operator of a batch cold cleaning machine shall submit an initial
notification report as described in s.
NR 469.12(1) and an initial statement of
compliance as described in s.
NR 469.12(2).
