Code of Maine Rules › 06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION › 096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL › Chapter 130 - SOLVENT CLEANERS › Section 096-130-2 - Definitions

Current through 2024-29, July 17, 2024
In addition to the terms that are defined in Chapter 100, as
				  amended, of the Department's regulations, the following words, terms, and
				  abbreviations when used in this Chapter shall have the following meanings: See
				  also Chapter 100: Definitions Regulation.
A.
Airless cleaning system
.
				"Airless cleaning system" means a solvent cleaning machine that is
				automatically operated and seals at a differential pressure of 0.50 pounds per
				square inch gauge (psig) or less, prior to the introduction of solvent or
				solvent vapor into the cleaning chamber and maintains differential pressure
				under vacuum during all cleaning and drying cycles.
B.
Airtight cleaning system.
"Air-tight cleaning system" means a solvent cleaning machine that is
				automatically operated and seals at a differential pressure no greater than
				0.50 psig, prior to the introduction of solvent or solvent vapor into the
				cleaning chamber and during all cleaning and drying cycles.
C.
Batch vapor cleaning machine.
"Batch vapor cleaning machine" a vapor cleaning machine in which individual
				parts or a set of parts move through the entire cleaning cycle before new parts
				are introduced into the cleaning machine. The term includes solvent cleaning
				machines, such as Ferris wheel cleaners or cross rod machines, that clean
				multiple loads simultaneously and are manually loaded. The term does not
				include machines that do not have a solvent/air interface, such as airless and
				airtight cleaning systems.
D.
Carbon adsorber.
"Carbon adsorber" means a bed of activated carbon
				into which an air/solvent gas-vapor stream is routed and which adsorbs the
				solvent on the carbon.
E.
Cleaning capacity.
"Cleaning capacity" means the interior volume
				of the cleaning chamber.
F.
Cold cleaning machine.
"Cold cleaning machine" means a device or piece
				of equipment, containing and/or using an unheated liquid where parts are placed
				to remove dirt, grease, oil or other contaminants and coatings, from the
				surfaces of the parts or to dry the parts. The term does not include machines
				that do not have a solvent/air interface, such as airless and airtight cleaning
				systems.
G.
Dwell.
"Dwell" means holding parts within the freeboard area of a solvent cleaning
				machine but above the solvent vapor zone. Dwell occurs after cleaning to allow
				solvent to drain from the parts or parts baskets back into the solvent cleaning
				machine.
H.
Dwell
				time.
"Dwell time" means the period of time between when a parts basket
				is placed in the vapor zone of a batch vapor or in-line vapor cleaning machine
				and when solvent dripping ceases. Dwell time is determined by placing a basket
				of parts in the vapor zone and measuring the amount of time between when the
				parts are placed in the vapor zone and dripping ceases.
I.
Freeboard ratio.
"Freeboard
				ratio" means, for a cold cleaning machine, the distance from the liquid solvent
				to the top edge of the cold cleaning machine divided by the length of the
				shortest side of the cold cleaning machine; for an operating batch vapor
				cleaning machine or an in-line vapor cleaning machine, the distance from the
				top of the solvent vapor layer to the top edge of the vapor cleaning machine
				divided by the length of the shortest side of the vapor cleaning
				machine.
J.
Freeboard
				refrigeration device.
"Freeboard refrigeration device" means a set of
				secondary coils mounted in the freeboard area of a solvent cleaning machine
				that carries a refrigerant or other chilled substance to provide a chilled air
				blanket above the solvent vapor. A solvent cleaning machine primary condenser,
				which is capable of maintaining a temperature in the center of the chilled air
				blanket at not more than 30 percent of the solvent boiling point, is both a
				primary condenser and a freeboard refrigeration device.
K.
Immersion cold cleaning
				machine.
"Immersion cold cleaning machine" means a cold cleaning machine
				in which the parts are immersed in the solvent when being cleaned.
L.
In-line vapor cleaning
				machine.
"In-line vapor cleaning machine" means a vapor cleaning machine
				that uses an automated parts handling system, typically a conveyor, to
				automatically provide a supply of parts to be cleaned. In-line vapor cleaning
				machines are fully enclosed except for the conveyor inlet and exit
				portals.
M.
Reduced room
				draft.
"Reduced room draft" means decreasing the flow or movement of air
				across the top of the freeboard area of a solvent cleaning machine to less than
				50 feet per minute (15.2 meters per minute) by methods including redirecting
				fans and/or air vents, moving a machine to a corner where there is less room
				draft, or constructing a partial or complete enclosure.
N.
Remote reservoir cold cleaning
				machine.
"Remote reservoir cold cleaning machine" means a machine in
				which liquid solvent is pumped to a sink-like work area that immediately drains
				solvent back into an enclosed container while parts are being cleaned, allowing
				no solvent to pool in the work area.
O.
Solvent/air interface.
"Solvent/air interface" means the location of contact between the concentrated
				solvent vapor layer and the air. This location of contact is defined as the
				mid-line height of the primary condenser coils. For a cold cleaning machine, it
				is the location of contact between the liquid solvent and the air.
P.
Solvent cleaning machine.
"Solvent cleaning machine" means a device or piece of equipment that uses
				solvent liquid or vapor to remove contaminants, such as dirt, grease, oil, and
				coatings, from the surfaces of materials. Types of solvent cleaning machines
				include batch vapor cleaning machines, in-line vapor cleaning machines,
				immersion cold cleaning machines, remote reservoir cold cleaning machines,
				airless cleaning systems and air-tight cleaning systems.
Q.
Solvent cleaning machine automated
				parts handling system.
"Solvent cleaning machine automated parts
				handling system" means a mechanical device that carries all parts and parts
				baskets at a controlled speed from the initial loading of soiled or wet parts
				through the removal of the cleaned or dried parts.
R.
Solvent cleaning machine down
				time.
"Solvent cleaning machine down time" means the period when a
				solvent cleaning machine is not cleaning parts and the sump heating coils, if
				present, are turned off.
S.
Solvent cleaning machine idle time.
"Solvent cleaning machine idle time"
				means the period when a solvent cleaning machine is not actively cleaning parts
				and the sump heating coil, if present, is turned on.
T.
Special and extreme solvent metal
				cleaning.
"Special and extreme solvent metal cleaning" means the use of
				cold cleaning machines:
(1) To clean metal
				parts in the manufacturing and rework of electronic parts, assemblies, boxes,
				wiring harnesses, sensors, and connectors used in aerospace service;
				or
(2) To clean metal parts used in
				the manufacturing of ozone, nitrous oxide, fluorine, chlorine, bromine,
				halogenated compounds, or oxygen in concentrations greater than 23
				percent;
(3) To clean metal parts
				exposed to ozone nitrous oxide, fluorine, chlorine, bromine, halogenated
				compounds, or oxygen in concentrations greater than 23 percent.