Code of Maine Rules
06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION
096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL
Chapter 126 - CAPTURE EFFICIENCY TEST PROCEDURES
Section 096-126-1 - Definitions
Current through 2024-38, September 18, 2024
For purposes of this regulation, the following definitions and abbreviations apply:
A. Capture. "Capture" means the containment or recovery of emissions from a process for direction into a duct which may be exhausted through a stack or sent to a control device.
B. Capture system. "Capture system" means all equipment (including, but not limited to, hoods, ducts, fans, booths, ovens, driers, etc.) used to contain, capture, or transport an air pollutant to a control device.
C. Capture efficiency. "Capture efficiency" means the weight per unit time of VOC entering a capture system and delivered to a control device divided by the weight per unit time of total VOC generated by a source of VOC, expressed as a percentage.
D. Control device. "Control device" means equipment (such as an incinerator or carbon adsorber) used to reduce, by destruction or removal, the amount of air pollutant(s) in an air stream prior to discharge to the ambient air.
E. Control system. "Control system" means a combination of one or more capture systems(s) and control devices working in concert to reduce discharges of pollutants to the ambient air.
F. Destruction or removal efficiency. "Destruction or removal efficiency" means the efficiency, expressed as a decimal fraction, of a control device in destroying or removing contaminants calculated as one minus the ratio of the amount of VOC exiting the control device to the amount of VOC entering the control device.
G. Gas/gas method. "Gas/gas method" means either of two methods for determining capture which rely only on gas phase measurements. One method requires construction of a temporary total enclosure (TTE) to assure all would be fugitive emissions are measured while the other method uses the room or building which houses the emission source as an enclosure.
H. Hood. "Hood" means a partial enclosure or canopy for capturing and exhausting, by means of a draft, the organic vapors or other fumes rising from a coating process or other source.
I. Liquid/gas method. "Liquid/gas method" means either of two methods for determining capture which require both gas phase and liquid phase measurements and analysis. One liquid/gas method requires construction of a temporary enclosure, the other uses the building or room which houses the facility as an enclosure.
J. Overall emission reduction efficiency. "Overall emission reduction efficiency" means the weight per unit time of VOC removed by a control device divided by the weight per unit time of VOC emitted by an emission source expressed as a percentage. The overall emission reduction efficiency is the product of the capture efficiency and the control equipment destruction or removal efficiency.
K. PTE. "PTE" means a permanent total enclosure, which contains a process that emits VOC and meets the specifications given in Procedure T.
L. TTE. "TTE" means a temporary total enclosure which is built around a process that emits VOC and meets the specifications given in Procedure T.
M. BE. "BE" means a building or room enclosure that contains a process that emits VOC. If a BE is to serve as a PTE or TTE, the appropriate requirements given in Procedure T must be met.
