Section 250-RICR-120-05-36.8 - General Requirements for Solvent Cleaning MachinesA. Equipment covers and dipping or rotating baskets must be constructed of nonporous or nonabsorbent material. Covers must form a tight seal with the sides of the solvent cleaning machine and have no gaps or holes.B. When the solvent cleaning machine cover is open, drafts at the same elevation as the tank lip must not be greater than forty (40) m/min. (one hundred thirty (130) ft/min.) when measured one to two (1 to 2) meters (three to seven (3 to 7) feet) upwind.C. Leaks must be repaired immediately or the solvent cleaning unit must be shut down.D. Equipment used in solvent cleaning must display a conspicuous summary of proper operating procedures consistent with minimizing emissions of organic solvents.E. Any solvent spray must be a solid, fluid stream, which is delivered at a pressure no greater than ten (10) pounds per square inch (psi) and which does not cause excessive splashing. For purposes of this regulation, no solvent spray shall be an atomized or shower spray.F. Spills shall be wiped up immediately. The wipe rags shall be stored in covered containers meeting the specifications in § 36.8(L) of this Part.G. No porous or absorbent materials, such as sponges, fabrics, wood, or paper products, shall be placed in an organic cleaning machine.H. Parts baskets or parts shall be drained under the cover and shall not be removed from the cleaning machine for at least fifteen (15) seconds or until dripping ceases and the pieces are visually dry, whichever is longer.I. Parts having cavities or blind holes shall be tipped or rotated while draining before being removed from the vapor zone and shall be oriented for best drainage.J. All parts shall be oriented for best drainage.K. When solvent is added to or drained from a solvent cleaning machine, the solvent shall be transferred using threaded or other leakproof couplings and the end of the pipe in the solvent sump shall be located beneath the liquid solvent surface.L. Solvent, waste solvent, still bottoms, and sump bottoms must be stored in covered containers and waste solvent transferal or disposal must allow less than twenty percent (20%) of the waste solvent (by weight) to evaporate into the atmosphere. The closed containers may contain a device that allows for pressure relief, providing that the device does not allow liquid solvent to drain from the containers.M. Each solvent cleaning machine and related air pollution control equipment shall be maintained as recommended by the manufacturer of the equipment.N. Operators must receive training in proper solvent cleaning procedures and, if requested by representatives of the Department or the EPA during an inspection, must complete and pass the applicable sections of the test on those procedures in 40 C.F.R. Part 63, app A to Subpart T incorporated in § 36.4 of this Part.O. No work area fans shall be located and positioned so that they blow across the opening of a solvent cleaning machine.P. No solvent cleaning machine shall be located and positioned so that ventilation from an open window blows across the opening of the solvent cleaning machine.Q. Facility wide emissions of Hazardous Air Pollutants (HAPs) from organic solvent cleaning operations shall not exceed one thousand five hundred (1,500) pounds of any one (1) HAP or four thousand (4,000) pounds of any combination of HAPs per calendar month, based upon a twelve (12) month rolling average unless a greater quantity of HAP emissions is allowed by an operating permit issued pursuant to Part 29 of this Subchapter, Air Pollution Control Regulation No. 29 -Operating Permits. In no case shall emissions exceed the facility wide emission limits specified in 40 C.F.R. § 63.471, incorporated in § 36.4 of this Part.250 R.I. Code R. 250-RICR-120-05-36.8
Adopted effective 1/13/2019
Amended effective 6/13/2022