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NR 469.05 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97; CR 07-105: am. (intro.) and (10) Register December 2008 No. 636, eff. 1-1-09.

NR 469.06 NR 469.06 Operational requirements associated with control devices for batch vapor and in-line cleaning machines. Each owner or operator of a solvent cleaning machine complying with s. NR 469.04 (2) or (3) or s. NR 469.073 or 469.077 shall comply with the requirements specified in this section.

NR 469.06(1) (1) Conduct monitoring of each control device used to comply with s. NR 469.04 as provided in s. NR 469.10.

NR 469.06(2) (2) Determine during each monitoring period whether each control device used to comply with these standards meets the requirements specified in pars. (a) to (k).

NR 469.06(2)(a) (a) If a freeboard refrigeration device is used to comply with these standards, the owner or operator shall ensure that the chilled air blanket temperature, in °F, measured at the center of the air blanket, is no greater than 30% of the solvent’s boiling point.

NR 469.06(2)(b) (b) If a reduced room draft is used to comply with these standards, the owner or operator shall comply with the following requirements:

NR 469.06(2)(b)1. 1. Ensure that the flow or movement of air across the top of the freeboard area of the solvent cleaning machine or within the solvent cleaning machine enclosure does not exceed 15.2 meters per minute (50 feet per minute) at any time as measured using the procedures in s. NR 469.10 (4).

NR 469.06(2)(b)2. 2. Establish and maintain the operating conditions under which the wind speed was demonstrated to be 15.2 meters per minute (50 feet per minute) or less as described in s. NR 469.10 (4).

NR 469.06(2)(c) (c) If a working-mode cover is used to comply with these standards, the owner or operator shall comply with the following requirements:

NR 469.06(2)(c)1. 1. Ensure that the cover opens only for part entrance and removal and completely covers the cleaning machine openings when closed.

NR 469.06(2)(c)2. 2. Ensure that the working-mode cover is maintained free of cracks, holes and other defects.

NR 469.06(2)(d) (d) If an idling-mode cover is used to comply with these standards, the owner or operator shall comply with the following requirements:

NR 469.06(2)(d)1. 1. Ensure that the cover is in place whenever parts are not in the solvent cleaning machine and completely covers the cleaning machine openings when in place.

NR 469.06(2)(d)2. 2. Ensure that the idling-mode cover is maintained free of cracks, holes and other defects.

NR 469.06(2)(e) (e) If dwell is used to comply with these standards, the owner or operator shall comply with the following requirements:

NR 469.06(2)(e)1. 1. Determine the appropriate dwell time for each type of part or parts basket, or determine the maximum dwell time using the most complex part type or parts basket, as described in s. NR 469.09 (4).

NR 469.06(2)(e)2. 2. Ensure that, after cleaning, each part is held in the solvent cleaning machine freeboard area above the vapor zone for the dwell time determined for that particular part or parts basket, or for the maximum dwell time determined using the most complex part type or parts basket.

NR 469.06(2)(f) (f) If a superheated vapor system is used to comply with these standards, the owner or operator shall comply with the following requirements:

NR 469.06(2)(f)1. 1. Ensure that the temperature of the solvent vapor at the center of the superheated vapor zone is at least 5.6°C (10°F) above the solvent’s boiling point.

NR 469.06(2)(f)2. 2. Ensure that the manufacturer’s specifications for determining the minimum proper dwell time within the superheated vapor system is followed.

NR 469.06(2)(f)3. 3. Ensure that parts remain within the superheated vapor for at least the minimum proper dwell time.

NR 469.06(2)(g) (g) If a carbon adsorber in conjunction with a lip exhaust or other exhaust internal to the cleaning machine is used to comply with these standards, the owner or operator shall comply with the following requirements:

NR 469.06(2)(g)1. 1. Except as provided in subd. 4., ensure that the concentration of organic solvent in the exhaust from the carbon adsorber does not exceed 100 parts per million of any halogenated HAP compound as measured using the procedure in s. NR 469.10 (5). If the halogenated HAP solvent concentration in the carbon adsorber exhaust exceeds 100 parts per million, the owner or operator shall adjust the desorption schedule or replace the disposable canister, if not a regenerative system, so that the exhaust concentration of halogenated HAP solvent is brought below 100 parts per million.

NR 469.06(2)(g)2. 2. Ensure that the carbon adsorber bed is not bypassed during desorption.

NR 469.06(2)(g)3. 3. Ensure that the lip exhaust is located above the solvent cleaning machine cover so that the cover closes below the lip exhaust level.

NR 469.06(2)(g)4. 4. For each batch vapor or in-line vapor cleaning machine that is not exempt under s. NR 423.03 (2) (a), (b), (d), (e) or (h), but is exempt under s. NR 423.03 (2) (i), ensure that the concentration of organic solvent in the exhaust from the carbon adsorber does not exceed 25 parts per million of solvent as measured using the procedure in s. NR 469.10 (5). If the solvent concentration in the carbon adsorber exhaust exceeds 25 parts per million, the owner or operator shall adjust the desorption schedule or replace the disposable canister, if not a regenerative system, so that the exhaust concentration of solvent is brought below 25 parts per million.

NR 469.06 Note Note: Subdivision 4. contains pertinent language previously applicable under s. NR 423.03 (4) (c) 4. and (5) (c) 2., and now applicable under this chapter instead, to owners and operators of batch vapor cleaning machines and in-line vapor cleaning machines that use solvents that contain halogenated HAP compounds that are also VOCs.

NR 469.06(2)(h) (h) If a superheated part system is used to comply with the standards for continuous web cleaning machines in s. NR 469.073, the owner or operator shall ensure that the temperature of the continuous web part is at least 10 degrees Fahrenheit above the solvent boiling point while the part is traveling through the cleaning machine.