Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 5 - STATE AIR POLLUTION CONTROL BOARD › Chapter 40 - EXISTING STATIONARY SOURCES › Part II - Emission Standards › Article 47 - Emission Standards for Solvent Metal Cleaning Operations in the NorthernVirginia Volatile Organic Compound Emissions Control Area (Rule 4-47) › Section 9VAC5-40-6840 - Standard for volatile organic compounds

Current through Register Vol. 40, No. 24, July 15, 2024
A. No owner or other person shall use or
					 permit the use of a cold cleaning machine that processes metal parts and
					 contains more than one liter of volatile organic compounds unless the machine
					 complies with this article. The board may make an exception if the owner
					 demonstrates and the board approves in writing that compliance with the article
					 will result in unsafe operating conditions.
1.
					 Immersion cold cleaning machines shall have a freeboard ratio of 0.75 or
					 greater unless the machines are equipped with covers that are kept closed
					 except when parts are being placed into or being removed from the
					 machine.
2. Immersion cold cleaning
					 machines and remote reservoir cold cleaning machines shall:
a. Have a permanent, conspicuous label
					 summarizing the operating requirements in subdivision 3 of this
					 subsection.
b. Be equipped with a
					 cover that shall be closed at all times except during cleaning of parts or the
					 addition or removal of solvent. For remote reservoir cold cleaning machines
					 that drain directly into the solvent storage reservoir, a perforated drain with
					 a diameter of not more than six inches shall constitute an acceptable
					 cover.
3. Cold cleaning
					 machines shall be operated in accordance with the following procedures:
a. Waste solvent shall be collected and
					 stored in closed containers. The closed containers may contain a device that
					 allows pressure relief, but does not allow liquid solvent to drain from the
					 container.
b. Cleaned parts shall
					 be drained at least 15 seconds or until dripping ceases, whichever is longer.
					 Parts having cavities or blind holes shall be tipped or rotated while the part
					 is draining. During the draining, tipping or rotating, the parts shall be
					 positioned so that solvent drains directly back to the cold cleaning
					 machine.
c. Flushing of parts using
					 a flexible hose or other flushing device shall be performed only within the
					 freeboard area of the cold cleaning machine. The solvent spray shall be a solid
					 fluid stream, not an atomized or shower spray.
d. The owner shall ensure that when the cover
					 is open the cold cleaning machine is not exposed to drafts greater than 40
					 meters per minute (132 feet per minute), as measured between 1 and 2 meters
					 (3.3 and 6.6 feet) upwind and at the same elevation as the tank lip.
e. Sponges, fabric, wood, leather, paper
					 products and other absorbent materials shall not be cleaned in the cold
					 cleaning machine.
f. When a
					 pump-agitated solvent bath is used, the agitator shall be operated to produce a
					 rolling motion of the solvent with no observable splashing of the solvent
					 against the tank walls or the parts being cleaned. Air agitated solvent baths
					 may not be used.
g. Spills during
					 solvent transfer and use of the cold cleaning machine shall be cleaned up
					 immediately, and the wipe rags or other sorbent material shall be immediately
					 stored in covered containers for disposal or recycling.
h. Work area fans shall be located and
					 positioned so that they do not blow across the opening of the degreaser
					 unit.
i. The owner shall ensure
					 that the solvent level does not exceed the fill line.
4. No person shall use, sell, or offer for
					 sale for use in a cold cleaning machine any solvent with a vapor pressure of
					 1.0 millimeters of mercury (mm Hg) or greater, measured at 20 degrees
					 Centigrade (68 degrees Fahrenheit containing volatile organic
					 compounds.
5. Any person who sells
					 or offers for sale any solvent containing volatile organic compounds for use in
					 a cold cleaning machine shall provide to the purchaser the following written
					 information:
a. The name and address of the
					 solvent supplier.
b. The type of
					 solvent including the product or vendor identification number.
c. The vapor pressure of the solvent measured
					 in mm Hg at 20 degrees Centigrade (68 degrees Fahrenheit.
6. A person who operates a cold cleaning
					 machine shall maintain for not less than two years and shall provide to the
					 board, on request, the information specified in subdivision A 5 of this
					 section. An invoice, bill of sale, certificate that corresponds to a number of
					 sales, Material Safety Data Sheet (MSDS), or other appropriate documentation
					 acceptable to the board may be used to comply with this section.