Louisiana Administrative Code › Title 33 - ENVIRONMENTAL QUALITY › Part III - Air › Chapter 13 - Emission Standards for Particulate Matter (Including Standards for Some Specific Facilities) › Subchapter F - Abrasive Blasting › Section III-1325 - Definitions

Current through Register Vol. 50, No. 6, June 20, 2024
A. Terms used in
				  this Subchapter are defined in LAC 33:III.111 with the exception of the terms
				  specifically defined below.
Abrasive Blasting
- the operation of
					 cleaning or preparing a surface by forcibly propelling a stream of abrasive
					 material against the surface.
Abrasive Blasting Equipment
- any
					 equipment utilized in abrasive blasting operations.
Abrasive Material (Abrasives, Abrasive
					 Media)
- any material used in abrasive blasting operations including,
					 but not limited to, sand, slag, steel shot/grit, garnet,
					 CO2, or walnut shells.
Emission Control Equipment
- any device or
					 contrivance, operating procedure, or abatement scheme, including, but not
					 limited to, filters, ventilation systems, shrouds, or best management
					 practices, that prevents or reduces the emission of air contaminants from
					 blasting operations.
Enclose
- to place tarps, shrouds, or a
					 solid structure on all sides and above an area used for abrasive blasting, or
					 to fully surround a structure to be blasted.
Hydroblasting
- abrasive blasting using
					 high-pressure liquid as the propelling force or as the active cleaning
					 agent.
Indoor Abrasive Blasting
-abrasive
					 blasting conducted inside of a permanent building equipped with a particulate
					 matter collection system.
Nuisance
- any condition of the ambient
					 air beyond the property line of the emission source that is offensive to the
					 senses, or that causes or constitutes an obstruction to the free use of
					 property, so as to unreasonably interfere with the comfortable enjoyment of
					 life or property. In determining whether or not a nuisance exists, the
					 department may consider factors including, but not limited to, the
					 following:
a. the frequency of the emission;
b. the duration of the emission;
c. the intensity and offensiveness of the emission;
d. the number of persons impacted;
e. the extent and character of the detriment to the
					 complainant; and
f. the source's ability to prevent or avoid harm.
Shade Factor
-for shrouds, the percent of
					 area impermeable to particles 100 grit or greater, or to sunlight.
Shroud
or
Tarp
-a device
					 that is designed to enclose or surround the blasting activity to minimize the
					 atmospheric dispersion of fine particulates and direct that material to a
					 confined area for subsequent removal and disposal.
Surround
-to place tarps, shrouds, or a
					 solid structure on all sides of an area used for abrasive blasting.
Wet Abrasive Blasting
-abrasive blasting
					 with the addition of water to the air abrasive stream.
Vacuum Blasting
-abrasive blasting in
					 which a seal is maintained between the assembly and the blasting surface,
					 thereby allowing the spent abrasive, surface material, and dust to be
					 immediately collected by a vacuum device, equipped with a high efficiency (at
					 least 95 percent) particulate filtration system.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 30:2054(B)(1).