Wis. Admin. Code NR 439.02

Definitions

Last amended: 2025Year: 2026Length: 674 wordsOfficial source

Cite as Wis. Admin. Code NR § 439.02

Definitions. Definitions. The definitions contained in chs. NR 400 and 407 apply to the terms used in this chapter. In addition, the following definitions apply to the terms used in this chapter: (1m) “Adsorption” means the transferring of a gaseous pollutant from the gas stream to a solid surface, typically carbon. (1n) “Adsorption device” includes a fixed regenerable bed, a disposable or rechargeable canister, a moving bed adsorber, and a fluid bed adsorber. (1s) “Audit sample” means a glass vial, a gas cylinder, or other material that contains a known concentration of a pollutant that may be used for the purpose of quality assurance of certain laboratory analyses required for the determination of compliance. (2) “Baghouse” means a device in which dust−laden gases are forced through a fabric bag and particulates are retained by direct interception, inertial impaction, diffusion, electrostatic attraction, or gravitational settling. (2m) “Calibration” means the comparison of a standard or instrument with a known accurate standard or instrument to detect and quantify inaccuracies, and either reduce or eliminate those inaccuracies by adjustment. (3) “Compliance emission test” means a performance test required by the department or conducted in cooperation with the department involving the quantitative measurement of air contaminants as they are emitted from a source to determine compliance with an emission limitation. (4) “Condensable particulate matter” means any material, except uncombined water, that may not be collected in the front half of the particulate matter emission sampling train but that exists as a solid or liquid at standard conditions. (5) (a) “Continuous monitoring system” means the total equipment used to sample, to analyze and to provide a permanent record of emissions or process parameters. (b) “Continuous monitoring system” includes a continuous emission monitoring system, a predictive emission monitoring system, a continuous opacity monitoring system, and a continuous parameter monitoring system. (5m) “Deviation” means any instance in which a source is not in conformance with a permit requirement or applicable regulation, including exceedances and excursions. A deviation is not always a violation. (6) “Emission sampling train” means the apparatus used to collect a representative sample in the performance of an emission test. (6e) “Exceedance” means a condition that is detected by monitoring, testing, or other means that provides data in the same terms as an emission limitation or standard, and that indicates that emissions or opacity are greater than the applicable limitation or standard, or less than the applicable standard in the case of a percent reduction requirement, consistent with any averaging period specified for averaging the results of the monitoring or testing, or specified in the applicable emission limitation or standard. (6m) “Excursion” means a departure from an indicator range established for monitoring under 40 CFR part 64 , consistent with any averaging period specified for averaging the results of the monitoring. (6s) “Incinerator” means an enclosed combustion device that is used to destroy pollutants. “Incinerator” includes an oxidizer. (8) (a) “Mechanical collector” means a device that separates solid particles from a gas stream by a combination of mechanical forces including centrifugal, gravitational, and inertial forces. (b) “Mechanical collector” includes settling chambers, cyclones, and multicyclone collectors. (9) “Monitoring device” means the collection of equipment used to measure the operating parameters of a control device or process, obtain a reading, and transmit the reading to recordkeeping equipment and to the control room. (9e) “Non-part 70 source” has the meaning given in s. NR 407.02 (5) . (9m) (a) “Oxidizer” means a combustion device used to destroy pollutants. (b) “Oxidizer” types include direct fire, catalytic, recuperative, and regenerative. (9s) “Part 70 source” has the meaning given in s. NR 407.02 (6) . (11) “Sampling port” means an opening through the wall of a stack or duct that is used to provide access for extraction of a sample or sample analysis. (12) “Sootblowing” means the cleaning of heat exchanger surfaces by the use of steam or air to dislodge accumulated material. (13) “Validation” means the action of checking that a device meets requirements and specifications to ensure that the device fulfills its intended purpose.
Wis. Admin. Code NR 439.02: Definitions | Justis AI