06-096 C.M.R. ch. 130, § 6 - Airless Cleaning Machines and Airtight Cleaning Machines

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.

Notes

06-096 C.M.R. ch. 130, § 6