Section 1200-03-16-.41 - METALLIC MINERAL PROCESSING PLANTS(1) Applicability. (a) The provisions of this rule are applicable to the following affected facilities in metallic mineral processing plants: Each crusher and screen in open-pit mines; each crusher, screen, bucket elevator, conveyor belt transfer point, thermal dryer, product packaging station, storage bin, enclosed storage area, truck loading station, truck unloading station, railcar loading station, and railcar unloading station at the mill or concentrator with the following exceptions. All facilities located in underground mines are exempted from the provisions of this rule. At uranium ore processing plants, all facilities subsequent to and including the beneficiation of uranium ore are exempted from the provisions of this rule.(b) An affected facility under subparagraph (a) of this paragraph that commences construction or modification after November 6, 1988 is subject to the requirements of this rule.(2) Definitions. (a) "Bucket elevator" means a conveying device for metallic minerals consisting of a head and foot assembly that supports and drives an endless single or double strand chain or belt to which buckets are attached.(b) "Capture system" means the equipment used to capture and transport particulate matter generated by one or more affected facilities to a control device.(c) "Control device" means the air pollution control equipment used to reduce particulate matter emissions released to the atmosphere from one or more affected facilities at a metallic mineral processing plant.(d) "Conveyor belt transfer point" means a point in the conveying operation where the metallic mineral or metallic mineral concentrate is transferred to or from a conveyor belt except where the metallic mineral is being transferred to a stockpile.(e) "Crusher" means a machine used to crush any metallic mineral and includes feeders or conveyors located immediately below the crushing surfaces. Crushers include, but are not limited to, the following types: jaw, gyratory, cone, and hammermill.(f) "Enclosed storage area" means any area covered by a roof under which metallic minerals are stored prior to further processing or loading.(g) "Metallic mineral concentrate" means a material containing metallic compounds in concentrations higher than naturally occurring in ore but requiring additional processing if pure metal is to be isolated. A metallic mineral concentrate contains at least one of the following metals in any of its oxidation states and at a concentration that contributes to the concentrate's commercial value: aluminum, copper, gold, iron, lead, molybdenum, silver, titanium, tungsten, uranium, zinc, and zirconium. This definition shall not be construed as requiring that material containing metallic compounds be refined to a pure metal in order for the material to be considered a metallic mineral concentrate to be covered by the standards.(h) "Metallic mineral processing plant" means any combination of equipment that produces metallic mineral concentrates for ore. Metallic mineral processing commences with the mining of ore and includes all operations either up to and including the loading of wet or dry concentrates or solutions of metallic minerals for transfer to facilities at nonadjacent locations that will subsequently process metallic concentrates into purified metals (or other products), or up to and including all material transfer and storage operations that precede the operations that produce refined metals (or other products) from metallic mineral concentrates at facilities adjacent to the metallic mineral processing plant. This definition shall not be construed as requiring that mining of ore be conducted in order for the combination of equipment to be considered a metallic mineral processing plant.(i) "Process fugitive emissions" means particulate matter emissions from an affected facility that are not collected by a capture system.(j) "Product packaging station" means the equipment used to fill containers with metallic compounds or metallic mineral concentrates.(k) "Railcar loading station" means that portion of a metallic mineral processing plant where metallic minerals or metallic mineral concentrates are loaded by a conveying system into railcars.(l) "Railcar unloading station" means that portion of a metallic mineral processing plant where metallic ore is unloaded from a railcar into a hopper, screen, or crusher.(m) "Screen" means a device for separating material according to size by passing undersize material through one or more mesh surfaces (screens) in series and retaining oversize materials on the mesh surfaces (screens).(n) "Stack emissions" means the particulate matter captured and released to the atmosphere through a stack, chimney, or flue.(o) "Storage bin" means a facility for storage (including surge bins and hoppers) of metallic minerals prior to further processing or loading.(p) "Surface moisture" means water that is not chemically bound to a metallic mineral or metallic mineral concentrate.(q) "Thermal dryer" means a unit in which the surface moisture content of a metallic mineral or a metallic mineral concentrate is reduced by direct or indirect contact with a heated gas steam.(r) "Truck loading station" means that portion of a metallic mineral processing plant where metallic minerals or metallic mineral concentrates are loaded by a conveying system into trucks.(s) "Truck unloading station" means that portion of a metallic mineral processing plant where metallic ore is unloaded from a truck into a hopper, screen, or crusher.(3) Standards: (a) On and after the date on which the performance test required to be conducted by paragraph 1200-3-16-.01(5) is completed, no owner or operator subject to the provisions of this rule shall cause to be discharged into the atmosphere from an affected facility any stack emissions that:1. Contain particulate matter in excess of 0.05 grams per dry standard cubic meter.2. Exhibit greater than 7 percent opacity, unless the stack emissions are discharged from an affected facility using a wet scrubbing emission control device.(b) On and after the sixtieth day after achieving the maximum production rate at which the affected facility will be operated, but no later than 180 days after initial startup, no owner or operator subject to the provisions of this rule shall cause to be discharged into the atmosphere from an affected facility any process fugitive emissions that exhibit greater than 10 percent opacity.(4) Reconstruction: (a) The cost of replacement of ore-contact surfaces on processing equipment shall not be considered in calculating either the "fixed capital cost of the new components" or the "fixed capital cost that would be required to construct a comparable new facility" under subparagraph 1200-3-16-.01(9)(b). Ore-contact surfaces are: Crushing surfaces; screen meshes, bars, and plates; conveyor belts; elevator buckets; and pan feeders.(b) Under subparagraph 1200-3-16-.01(9)(b), the "fixed capital cost of the new components" includes the fixed capital cost of all depreciable components (except components specified in subparagraph (a) of this paragraph) that are or will be replaced pursuant to all continuous programs of component replacement commenced within any 2- year period following November 6, 1988.(5) Monitoring: (a) The owner or operator subject to the provisions of this rule shall install, calibrate, maintain, and operate a monitoring device for the continuous measurement of the change in pressure of the gas stream through the scrubber for any affected facility using a wet scrubbing emission control device. The monitoring device must be certified by the manufacturer to be accurate within ± 250 pascals (±1 inch water) gauge pressure and must be calibrated on an annual basis in accordance with manufacturer's instructions.(b) The owner or operator subject to the provisions of this rule shall install, calibrate, maintain, and operate a monitoring device for the continuous measurement of the scrubbing liquid flow rate to a wet scrubber for any affected facility using any type of wet scrubbing emission control device. The monitoring device must be certified by the manufacturer to be accurate within ±5 percent of design scrubbing liquid flow rate and must be calibrated on at least an annual basis in accordance with manufacturer's instructions.(6) Recordkeeping and reporting: (a) The owner or operator subject to the provisions of this rule shall conduct a performance test and submit to the Technical Secretary a written report of the results of the test as specified in subparagraph 1200-3-16-.01(5)(a).(b) During the initial performance test of a wet scrubber, and at least weekly thereafter, the owner or operator shall record the measurements of both the change in pressure of the gas stream across the scrubber and the scrubbing liquid flow rate.(c) After the initial performance test of a wet scrubber, the owner or operator shall submit semiannual reports to the Technical Secretary of occurrences when the measurements of the scrubber pressure loss (or gain) and liquid flow differ by more than ± 30 percent from those measurements recorded during the most recent performance test.(d) The reports required under subparagraph (c) of this paragraph shall be postmarked within 30 days following the end of the second and fourth calendar quarters.(7) Test methods and procedures: (a) Reference Methods in subparagraph 1200-3-16-.01(5)(g) except as provided under 1200-3-16.01(5)(b), shall be used to determine compliance with the standards prescribed under paragraph (3) of this rule as follows:1. Method 5 or Method 17 for concentration of particulate matter and associated moisture content;2. Method 1 for sample and velocity traverses;3. Method 2 for velocity and volumetric flow rate;4. Method 3 for gas analysis;5. Method 9 for measuring opacity from stack emissions and process fugitive emissions.(b) For Method 5, the following stipulations shall apply:1. The sampling probe and filter holder may be operated without heaters if the gas stream being sampled is at ambient temperature;2. For gas streams above ambient temperature, the sampling train shall be operated with a probe and filter temperature slightly above the effluent temperature (up to a maximum filter temperature of 121°C (250°F)) in order to prevent water condensation on the filter;3. The minimum sample volume shall be 1.7 dscm (60 dscf).(c) For Method 9, the following stipulation shall apply; the observer shall read opacity only when emissions are clearly identified as emanating solely from the affected facility being observed.Tenn. Comp. R. & Regs. 1200-03-16-.41
Original rule filed September 21, 1988; effective November 6, 1988.Authority: T.C.A. §§ 68-25-105 and 4-5-202.