INSTRUCTIONS FOR COMPLETING DATA FORM SC
Complete one Data Form SC for each solvent cleaning operation.
SIC and Plant Numbers may be left blank if unknown.
Please read the following instructions prior to completing this form.
Line 6 If emissions from this source vent to other than room atmosphere, check either the source,
abatement device, or emission point to which they vent; complete the appropriate source,
abatement, or emission point form(s) in addition to Data Form SC.
Line 7 Annual net solvent usage is the quantity of solvent lost to the atmosphere in a 12-month
period. Net solvent usage equals the quantity of solvent purchased and placed in the
container minus the quantity of recovered or recycled solvent. Net solvent usage is also
equal to the quantity of "make-up" solvent placed in the container. If annual net solvent
usage is not available, please estimate or project the annual solvent usage.
Provide the trade name(s) of solvent(s) used. If more than two solvents are used, attach
additional Material Safety Data Sheets (MSDS). "Percent of total used" means the percent
of the total solvents used at this source.
Line 11 Freeboard height: (A) of vapor degreasing tanks is the distance from the solvent vapor-air
interface to the top of the degreasing tank; (B) of conveyorized degreasing tanks is the
distance from the top of the solvent or solvent vapor-air interface to the bottom of the lowest
opening in the degreaser tank; (C) of cold cleaning tanks is the distance from the top of the
solvent or solvent drain to the top of the tank.
DEFINITIONS
Open-Top Vapor Degreaser: Any batch loaded, boiling solvent degreaser.
Conveyorized Degreaser: Any continuously loaded, conveyorized solvent degreaser either boiling
or non-boiling.
Cold Cleaner: Any non-boiling solvent degreaser, including, but not limited to, spray sinks, spray
booths and batch-loaded dip tanks.
Wipe Cleaning: That method of cleaning which utilizes a material such as a rag wetted with a
solvent, coupled with a physical rubbing process to remove contaminants from surfaces.
Freeboard Height: Of open-top vapor degreasing tanks, the distance from the solvent vapor-air
interface to the top of the degreaser tank. Of conveyorized degreasing tanks, the distance from the
top of the solvent or solvent vapor-air interface to the bottom of the lowest opening in the degreaser
tank. Of cold cleaning tanks, the distance from the top of the solvent or solvent drain to the top of the
tank.
Make-up Solvent: Make-up solvent is that solvent which is added to a cleaning operation to replace
solvent lost through evaporation. Where solvent is reclaimed by a commercial reclamation service,
only the net increase between solvent sent out and solvent returned shall be considered make-up
solvent.
Condenser Flow Switch: A safety switch which shuts off sump heat if condenser water fails to
circulate or rises above the designated operating temperature.
Spray Safety Switch: A safety switch which cuts off the pump of the spray applicator if the vapor
level drops below a specified level.
Vapor Level Control Thermostat: A safety switch which turns off the sump heater if the thermostat
senses vapors rising above the air-vapor interface.
(revised 4/12/16)