Utah Admin. Code R307-335-4 - Cold Cleaning Facilities
No owner or operator shall operate a degreasing or solvent cleaning operation unless conditions in R307-335-4(1) through (7) are met.
(1) A cover shall be installed
which shall remain closed except during actual loading, unloading or handling
of parts in cleaner. The cover shall be designed so that it can be easily
operated with one hand if:
(a) The volatility
of the solvent is greater than 2 kPa (15 mm Hg or 0.3 psi) measured at 38
degrees C (100 degrees F),
(b) The
solvent is agitated, or
(c) The
solvent is heated.
(2)
An internal draining rack for cleaned parts shall be installed on which parts
shall be drained until all dripping ceases. If the volatility of the solvent is
greater than 4.3 kPa (32 mm Hg at 38 degrees C (100 degrees F)), the drainage
facility must be internal, so that parts are enclosed under the cover while
draining. The drainage facility may be external for applications where an
internal type cannot fit into the cleaning system.
(3) Waste or used solvent shall be stored in
covered containers.
(4) Tanks,
containers and all associated equipment shall be maintained in good operating
condition, and leaks shall be repaired immediately or the degreaser shall be
shutdown.
(5) Written procedures
for the operation and maintenance of the degreasing or solvent cleaning
equipment shall be permanently posted in an accessible and conspicuous location
near the equipment.
(6) If the
solvent volatility is greater than 4.3 kPa (33 mm Hg or 0.6 psi) measured at 38
degrees C (100 degrees F), or if solvent is heated above 50 degrees C (120
degrees F), then one of the following control devices shall be used:
(a) Freeboard that gives a freeboard ratio
greater than 0.7;
(b) Water cover
if the solvent is insoluble in and heavier than water); or
(c) Other systems of equivalent control, such
as a refrigerated chiller or carbon adsorption.
(7) If used, the solvent spray shall be a
solid fluid stream at a pressure that does not cause excessive splashing and
may not be a fine, atomized or shower type spray.
Notes
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