Code of Maine Rules › 06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION › 096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL › Chapter 130 - SOLVENT CLEANERS › Section 096-130-6 - Airless Cleaning Machines and Airtight Cleaning Machines

Current through 2024-29, July 17, 2024
This Section applies to airless cleaning machines and
				  airtight cleaning machines that process metal parts.
A. The operator of each machine shall
				maintain a log of solvent additions and deletions for each machine including
				the weight of solvent contained in activated carbon or other sorbent material
				used to control emissions from the cleaning machine.
B. The operator of each machine shall
				demonstrate that the emissions from each machine, on a three-month rolling
				average, are equal to or less than the allowable limit determined by the use of
				Table 1 or the following equation if the volume of the cleaning machine exceeds
				2.95 cubic meters:
EL = 330 (vol)0.6
where:
EL = the three-month rolling average monthly emission limit
				  (kilograms/month).
vol = the cleaning capacity of machine (cubic meters).
Table 1
EMISSION LIMITS FOR CLEANING MACHINES
						  WITHOUT A SOLVENT/AIR INTERFACE
Cleaning
3-Month rolling average
Cleaning
3-Month rolling average
Cleaning
3-Month rolling average
capacity
monthly emission limit
capacity
monthly emission limit
capacity
monthly emission limit
(cubic meters)
(kilograms/month)
(cubic meters)
(kilograms/month)
(cubic meters)
(kilograms/month)
0.00
0
1.00
330
2.00
500
0.05
55
1.05
340
2.05
508
0.10
83
1.10
349
2.10
515
0.15
106
1.15
359
2.15
522
0.20
126
1.20
368
2.20
530
0.25
144
1.25
377
2.25
537
0.30
160
1.30
386
2.30
544
0.35
176
1.35
395
2.35
551
0.40
190
1.40
404
2.40
558
0.45
204
1.45
412
2.45
565
0.50
218
1.50
421
2.50
572
0.55
231
1.55
429
2.55
579
0.60
243
1.60
438
2.60
585
0.65
255
1.65
446
2.65
592
0.70
266
1.70
454
2.70
599
0.75
278
1.75
462
2.75
605
0.80
289
1.80
470
2.80
612
0.85
299
1.85
477
2.85
619
0.90
310
1.90
485
2.90
625
0.95
320
1.95
493
2.95
632
C.
				The operator of each machine equipped with a carbon adsorber shall measure and
				record the concentration of solvent in the exhaust of the carbon adsorber
				weekly with a colorimetric detector tube designed to measure a concentration of
				100 ppm by volume of solvent to air at an accuracy of +/- 25 ppm by volume.
				This test shall be conducted while the solvent cleaning machine is in the
				working mode and is venting to the adsorber.
D. The operator of each machine equipped with
				a carbon adsorber shall maintain and operate the machine and adsorber system so
				that emissions from the adsorber exhaust do not exceed 25 ppm by volume
				measured while the solvent cleaning machine is in the working mode and is
				venting to the adsorber.
E. The
				machine shall be equipped with a permanent, conspicuous label summarizing the
				operating requirements in Subsection F below.
F. Airless cleaning machines and air-tight
				cleaning machines shall be operated in accordance with the following
				procedures:
(1) Waste solvent, still bottoms,
				and sump bottoms 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;
(2) Parts shall be oriented so that the
				solvent drains freely from the parts. 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;
(3) Parts baskets or parts shall not be
				removed from the in-line vapor cleaning machine until dripping has
				ceased;
(4) Sponges, fabric, wood,
				leather, paper products and other absorbent materials shall not be cleaned in
				the airless cleaning machines and air-tight cleaning machines;
(5) Spills during solvent transfer and use of
				the airless cleaning machines and air-tight cleaning machines shall be cleaned
				up immediately, and the wipe rags or other sorbent material shall be
				immediately stored in covered containers for disposal or recycling;
(6) Work area fans shall be located and
				positioned so that they do not blow across the airless cleaning machine and
				air-tight cleaning machine;
(7)
				Spraying operations shall be done in the vapor zone or within a Section of the
				machine that is not exposed to the ambient air; and
(8) When solvent is added to or drained from
				the airless cleaning machine and air-tight 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.