Authority: IC 13-14-8; IC 13-17-3-4; IC 13-17-3-11
Affected: IC 13-11; IC 13-15; IC 13-17
Sec. 2.
In addition to the definitions in IC 13-11, 326 IAC 1-2, and
326 IAC 20-1-3, the following definitions apply throughout this rule:
(1) "Affected emission unit" means any of the
following emission units at a secondary lead smelter:
(A) Blast, reverberatory, rotary, and
electric furnaces.
(B) Refining
kettles.
(C) Agglomerating
furnaces.
(D) Dryers.
(E) Process fugitive emissions sources.
(F) Buildings containing
lead-bearing materials.
(G)
Fugitive dust sources.
(2) "Affirmative defense" means, in the
context of an enforcement proceeding, a response or defense put forward by a
defendant, regarding which the defendant has the burden of proof, and the
merits of which are independently and objectively evaluated in a judicial or
administrative proceeding.
(3)
"Agglomerating furnace" means a furnace used to melt flue dust that is
collected from a baghouse into a solid mass.
(4) "Bag leak detection system" means an
instrument that is capable of monitoring particulate matter loadings in the
exhaust of a baghouse in order to detect bag failures. A bag leak detection
system includes, but is not limited to, an instrument to monitor relative
particulate matter loadings that operates on:
(A) triboelectric;
(B) light scattering; or
(C) transmittance.
(5) "Battery breaking area" means the plant
location at which lead-acid batteries are broken, crushed, or disassembled and
separated into components.
(6)
"Blast furnace" means a smelting furnace consisting of a vertical cylinder atop
a crucible, into which lead-bearing charge materials are introduced at the top
of the furnace and combustion air is introduced through openings in the
refractory lining and shell of the furnace at the bottom of the cylinder and
that:
(A) uses coke as a fuel source; and
(B) is operated at a temperature
in the combustion zone of greater than nine hundred eighty (980) degrees
Celsius so that that lead compounds are chemically reduced to elemental lead
metal.
(7) "Blast
furnace charging location" means the physical opening through which raw
materials are introduced into a blast furnace.
(8) "Collocated blast furnace and
reverberatory furnace" means operation at the same location of a blast furnace
and a reverberatory furnace where the vent streams of the furnaces are mixed
before cooling, with the volumetric flow rate discharged from the blast furnace
being equal to or less than that discharged from the reverberatory furnace.
(9) "Dryer" means a chamber that
is heated and that is used to remove moisture from lead bearing materials
before they are charged to a smelting furnace.
(10) "Dryer transition equipment" means the
junction between a dryer and the charge hopper or conveyor, or the junction
between the dryer and the smelting furnace feed chute or hopper located at the
ends of the dryer.
(11) "Electric
furnace" means a smelting furnace consisting of a vessel into which
reverberatory furnace slag is introduced and that uses electrical energy to
heat the reverberatory furnace slag to a temperature of greater than nine
hundred eighty (980) degrees Celsius so that lead compounds are reduced to
elemental lead metal.
(12)
"Fugitive dust source" means a stationary source of hazardous air pollutant
emissions at a secondary lead smelter that is not associated with a specific
process or process fugitive vent or stack. Fugitive dust sources include, but
are not limited to, the following:
(A)
Roadways.
(B) Storage piles.
(C) Lead-bearing material handling
transfer points.
(D) Lead-bearing
material transport areas.
(E)
Lead-bearing material storage areas.
(F) Other lead-bearing material process
areas.
(G) Other lead-bearing
material process buildings.
(13) "Furnace and refining/casting area"
means any area of a secondary lead smelter where:
(A) smelting furnaces are located;
(B) refining operations occur; or
(C) casting operations occur.
(14) "Lead alloy" means an alloy
in which the predominant component is lead.
(15) "Lead-bearing material" means material
with a lead content equal to or greater than five (5) milligrams per liter
(mg/l) as measured by United States Environmental Protection Agency (U.S. EPA)
Method 1311 "Test Methods for Evaluating Solid Waste, Physical/Chemical
Method", U.S. EPA Publication SW-846*. Under Method 1311, only materials with
at least one hundred (100) parts per million (ppm) lead will be considered to
be lead-bearing.
(16) "Leeward
wall" means the furthest exterior wall of a total enclosure that is opposite
the windward wall.
(17)
"Maintenance activity" means any of the following routine maintenance and
repair activities that could generate fugitive lead dust:
(A) Replacement or repair of refractory, or
any internal or external part of equipment used to process, handle, or control
lead-containing materials.
(B)
Replacement of any duct section used to convey lead-containing exhaust.
(C) Metal cutting or welding that
penetrates the metal structure of any equipment, and its associated components,
used to process lead-containing material so that lead dust within the internal
structure or its components can become fugitive lead dust.
(D) Resurfacing, repair, or removal of
ground, pavement, concrete, or asphalt.
(18) "Materials storage and handling area"
means any area of a secondary lead smelter where lead-bearing materials are
stored or handled between process steps including, but not limited to areas in
which materials are stored in open piles, bins, or tubs, and areas in which
material is prepared for charging to a smelting furnace. Lead-bearing materials
in these areas include, but are not limited to, the following:
(A) Broken battery components.
(B) Reverberatory furnace slag.
(C) Flue dust.
(D) Dross.
(19) "Natural draft opening" means any
permanent opening in an enclosure that:
(A)
remains open during operation of a secondary lead smelter; and
(B) is not connected to a duct in which a fan
is installed.
(20) "New
emissions unit" means any affected emissions unit at a secondary lead smelter
that was constructed or reconstructed after May 19, 2011. The term does not
include a building that is constructed for the purpose of controlling fugitive
emissions from an existing emissions unit.
(21) "Partial enclosure" means a structure
comprised of walls or partitions on at least three (3) sides or three-quarters
(3/4) of the perimeter surrounding stored materials or process equipment to
prevent the entrainment of particulate matter into the air.
(22) "Pavement cleaning" means the use of
vacuum equipment, water sprays, or a combination thereof to remove dust or
other accumulated material from the paved areas of a secondary lead smelter.
(23) "Plant roadway" means any
area of a secondary lead smelter outside of a total enclosure that is subject
to vehicle traffic, including traffic by forklifts, front-end loaders, or
vehicles carrying whole batteries or cast lead ingots. The term does not
include employee and visitor parking areas, provided they are not subject to
traffic by vehicles carrying lead-bearing materials.
(24) "Pressurized dryer breaching seal" means
a seal system connecting the dryer transition pieces that is maintained at a
higher pressure than the inside of the dryer.
(25) "Process fugitive emissions source"
means a source of hazardous air pollutant emissions at a secondary lead smelter
that is associated with lead smelting or refining, but is not the primary
exhaust stream from a smelting furnace, and is not a fugitive dust source.
Process fugitive emissions sources include, but are not limited to, the
following:
(A) Smelting furnace charging
points.
(B) Smelting furnace lead
and slag taps.
(C) Refining
kettles.
(D) Agglomerating
furnaces.
(E) Drying kiln
transition pieces.
(26)
"Process vent" means the following:
(A)
Furnace vents.
(B) Dryer vents.
(C) Agglomeration furnace vents.
(D) Vents from battery breakers.
(E) Vents from buildings
containing lead-bearing material.
(F) Any ventilation system controlling lead
emissions.
(27)
"Refining kettle" means an open-top vessel that is constructed of cast iron or
steel and is indirectly heated from below and contains molten lead for the
purpose of refining and alloying the lead, including the following:
(A) Pot furnaces.
(B) Receiving kettles.
(C) Holding kettles.
(28) "Reverberatory furnace" means a
refractory-lined furnace that uses one (1) or more flames to heat the walls and
roof of the furnace and lead-bearing scrap to a temperature of greater than
nine hundred eighty (980) degrees Celsius so that lead compounds are chemically
reduced to elemental lead metal.
(29) "Rotary furnace," or "rotary
reverberatory furnace" means a furnace consisting of a refractory-lined chamber
that rotates about a horizontal axis and that uses one (1) or more flames to
heat the walls of the furnace and lead-bearing scrap to a temperature of
greater than nine hundred eighty (980) degrees Celsius so that lead compounds
are chemically reduced to elemental lead metal.
(30) "Secondary lead smelter" means any
source where lead-bearing scrap material is recycled into elemental lead or
lead alloys by smelting, including, but not limited to, lead-acid batteries.
(31) "Shutdown" means the period
when no lead-bearing materials are being fed to the furnace and smelting
operations have ceased during which the furnace is cooled from steady-state
operating temperature to ambient temperature.
(32) "Smelting" means the chemical reduction
of lead compounds to elemental lead or lead alloys through processing in
high-temperature furnaces at a temperature of greater than nine hundred eighty
(980) degrees Celsius, including, but not limited to, the following:
(A) Blast furnaces.
(B) Reverberatory furnaces.
(C) Rotary furnaces.
(D) Electric furnaces.
(33) "Startup" means the period when no
lead-bearing materials have been fed to the furnace and smelting operations
have not yet commenced during which the furnace is heated from ambient
temperature to steady-state operating temperature.
(34) "Total enclosure" means a containment
building that is completely enclosed with a floor, walls, and a roof to prevent
exposure to the elements and to assure containment of lead-bearing material
with limited openings to allow access and egress for people and vehicles. The
total enclosure must provide an effective barrier against fugitive dust
emissions so that the:
(A) direction of air
flow through any openings is inward; and
(B) enclosure is maintained under constant
negative pressure.
(35)
"Vehicle wash" means a device for removing dust and other accumulated material
from the wheels, body, and underside of a vehicle to prevent the inadvertent
transfer of lead-contaminated material to another area of a secondary lead
smelter or to public roadways.
(36) "Wet suppression" means the use of
water, water combined with a chemical surfactant, or a chemical binding agent
to prevent the entrainment of dust into the air from fugitive dust sources.
(37) "Windward wall" means the
exterior wall of a total enclosure that is most impacted by the wind in its
most prevailing direction determined by a wind rose using available data from
the closest representative meteorological station.
*This document is incorporated by reference. Copies may be
obtained from the Government Printing Office, 732 North Capitol Street NW,
Washington, D.C. 20401 or are available for review and copying at the Indiana
Department of Environmental Management, Office of Air Quality, Indiana
Government Center North, Tenth Floor, 100 North Senate Avenue, Indianapolis,
Indiana 46204.