Current through Vol. 24-04, March 15, 2024
Rule 708.
(1) It is
unlawful for a person to operate a new open top vapor degreaser unless all of
the provisions of the following subrules are met or unless an equivalent
control method is approved by the department.
(2) It is unlawful for a person to operate a
new open top vapor degreaser unless at least 1 of the following conditions is
met:
(a) The degreaser is designed such that
the ratio of the freeboard height to the width of the degreaser is equal to or
greater than 0.75. And if the degreaser opening is more than 10 square feet,
the degreaser shall be designed with a powered or mechanically assisted
cover.
(b) The degreaser is
equipped with a refrigerated freeboard device.
(c) The degreaser is controlled by a carbon
adsorption system with ventilation of more than 50 cubic feet per minute of
air/vapor area when the cover is open and with exhaust of less than 25 parts of
organic vapor per million parts of air averaged over 1 complete adsorption
cycle.
(d) The degreaser is
controlled by an equivalent control method approved by the
department.
(3) It is
unlawful for a person to operate a new open top vapor degreaser unless all of
the following conditions are met:
(a) A cover
shall be installed that is designed to be opened and closed easily without
disturbing the vapor zone. The cover shall be closed at all times, except when
processing workloads through the degreaser.
(b) A procedure shall be developed to
minimize solvent carryout by doing all of the following:
(i) Racking parts to allow complete
drainage.
(ii) Moving parts in and
out of the degreaser at a vertical speed of less than 11 feet per minute when a
powered hoist is used to raise or lower the parts.
(iii) Holding parts in the vapor zone not
less than 30 seconds or until condensation ceases.
(iv) Tipping or tumbling parts in a manner
such that no pools of organic solvent remain on the cleaned parts before
removal.
(v) Allowing parts to dry
within the degreaser for not less than 15 seconds or until visually
dry.
(c) The following
control devices shall be installed:
(i) A
condenser flow switch and thermostat that shut off the sump heat if the
condenser coolant is either not circulating or is too warm.
(ii) If equipped with spray, a spray safety
switch that shuts off the spray pump if the vapor level drops
excessively.
(iii) A vapor level
control device that shuts off the sump heat if the solvent vapor level rises
above the normal design level.
(d) The total workload shall not occupy more
than 1/2 of the degreaser's open top area.
(e) Solvent shall not be sprayed above the
vapor level.
(f) Solvent leaks
shall be repaired immediately.
(g)
The degreaser shall be operated in such a manner that no water is visibly
detectable in solvent exiting the water separator.
(h) Exhaust ventilation shall not exceed 65
cubic feet per minute per square foot of degreaser open area, unless necessary
to meet OSHA requirements.
(i)
Waste solvent shall be stored only in closed containers, unless demonstrated to
be a safety hazard and disposed of in a manner such that not more than 20% by
weight is allowed to evaporate into the atmosphere.
(4) A person responsible for the provisions
of this rule shall develop written procedures for the operation of all such
provisions, and such procedures shall be posted in an accessible, conspicuous
location near the vapor degreaser.
(5) The provisions of this rule shall not
apply to an open top vapor degreaser having an air/vapor interface of less than
10 square feet, if the degreaser complies with the provisions of subrules (3)
and (4) of this rule.
(6) The
provisions of this rule do not apply to a new open top vapor degreaser that is
subject to the provisions of the halogenated solvent cleaner national emission
standards for hazardous air pollutants (1995), which are adopted by reference
in R 336.1651.
