Section 250-RICR-120-05-36.9 - Requirements for Batch Cold Cleaning Machine OperationsA. Cleaning machines shall be equipped with an attached cover that can be operated easily with one (1) hand. Covers must be closed at all times except during parts entry and removal. If the cold solvent cleaning machine is equipped with a lip exhaust, the cover shall be located below the lip exhaust.B. The solvent sump of a remote-reservoir batch cold solvent cleaning machine must be equipped with a tight-fitting cover that is kept closed at all times except during the cleaning of parts.C. One (1) of the following techniques shall be used to control solvent emissions from batch cold cleaning operations: 1. A freeboard ratio greater than or equal to seventy-five one hundredths (0.75); or2. Another system of equivalent control that is approved by the Director and the EPA. Requests for equivalency determinations for control of cleaning machines must be submitted and approved prior to startup of the cleaning machine. Requests shall include the following information:a. A complete description of process and control equipment;b. Testing procedures that will be used to demonstrate equivalency; and c. The date, time, and location of the equivalency test.D. If a flexible hose or flushing device is used, flushing shall be performed only within the freeboard zone of the cold solvent cleaning machine.E. When an air or pump-agitated solvent bath is used, the agitator shall be operated so that a rolling motion of the solvent is produced and splashing against the tank or parts being cleaned does not occur.F. The height of solvent in a batch cold cleaner shall not exceed the manufacturer's fill-line for that machine.G. No cold cleaning operation shall use a solvent with a vapor pressure equal to or greater than one (1.0) millimeter of mercury (mm Hg), measured at twenty degrees Celsius (20° C) (sixty-eight degrees Fahrenheit (68° F)). The following are exempt from this requirement:1. A cold solvent cleaning machine with an internal volume of one (1) liter or less;2. A cold solvent cleaning machine used for special and extreme solvent cleaning, as defined in § 36.5(A) () of this Part, with the Director's approval;3. A cold solvent cleaning machine which cannot be operated safely using a solvent that complies with the vapor pressure limit in § 36.9(G) of this Part, with the Director's approval.4. A cold solvent cleaning machine equipped with an air pollution control system with an overall VOC capture and control efficiency of ninety percent (90%) or greater, with the Director's approval.250 R.I. Code R. 250-RICR-120-05-36.9
Adopted effective 1/13/2019
Amended effective 6/13/2022