Section 1200-03-16-.24 - PRIMARY ZINC SMELTERS(1) Applicability. The provisions of this rule shall apply to the following affected facilities in primary zinc smelters: roaster and sintering machine commenced on or after February 9, 1977.
(2) Definitions. (a) "Primary zinc smelter" means any installation engaged in the production, or any intermediate process in the production, of zinc or zinc oxide from zinc sulfide ore concentrates through the use of pyrometallurgical techniques.(b) "Roaster" means any facility in which a zinc sulfide ore concentrate charge is heated in the presence of air to eliminate a significant portion (more than 10 percent) of the sulfur contained in the charge.(c) "Sintering machine" means any furnace in which calcines are heated in the presence of air to agglomerate the calcines into a hard porous mass called "sinter".(d) "Sulfuric acid plant" means any facility producing sulfuric acid by the contact process.(3) Standard for Particulate Emissions. (a) On and after the date on which the performance test required to be conducted by paragraph .01(5) of this chapter is completed, no owner or operator subject to the provisions of this rule shall discharge or cause the discharge into the atmosphere from any sintering machine any gases which contain particulate matter in excess of 50 mg/dscm (0.022 gr/dscf).(4) Standard for Sulfur Dioxide.(a) On and after the date on which the performance test required to be conducted by paragraph .01(5) of this chapter is completed, no owner or operator subject to the provisions of this rule shall discharge or cause the discharge into the atmosphere from any roaster any gases which contain sulfur dioxide in excess of 0.065 percent by volume.(b) Any sintering machine which eliminates more than 10 percent of the sulfur initially contained in the zinc sulfide ore concentrates will be considered as a roaster under subparagraph (a) of this paragraph.(5) Standard for Visible Emissions. (a) On and after the date on which the performance test required to be conducted by paragraph .01(5) of this chapter is completed, no owner or operator subject to the provisions of this rule shall discharge or cause the discharge into the atmosphere from any sintering machine any visible emissions which exhibit greater than 20 percent opacity.(b) On and after the date on which the performance test required to be conducted by paragraph .01(5) of this chapter is completed, operator subject to the provisions of this rule shall discharge or cause the discharge into the atmosphere from any affected facility that uses a sulfuric acid plant to comply with the standard set forth in paragraph (4), any visible emissions which exhibit greater than 20 percent opacity.(6) Monitoring of Operations. (a) The owner or operator of any primary zinc smelter subject to the provisions of this rule shall install and operate: 1. A continuous monitoring system to monitor and record the opacity of gases discharged into the atmosphere from any sintering machine. The span of this system shall be set at 80 to 100 percent opacity.2. A continuous monitoring system to monitor and record sulfur dioxide emissions discharged into the atmosphere from any roaster subject to paragraph (4). The span of this system shall be set at a sulfur dioxide concentration of 0.20 percent by volume. (i) The continuous monitoring system performance evaluation required under paragraph .01(8) of this chapter shall be completed prior to the initial performance test required under paragraph .01(5) of this chapter. During the performance evaluation, the span of the continuous monitoring system may be set at a sulfur dioxide concentration of 0.15 percent by volume if necessary to maintain the system output between 20 percent and 90 percent of full scale. Upon completion of the continuous monitoring system performance evaluation, the span of the continuous monitoring system shall be set at a sulfur dioxide concentration of 0.20 percent by volume.(ii) For the purpose of the continuous monitoring system performance evaluation required under paragraph .01(8) of this chapter the reference method referred to under the Field Test for Accuracy (Relative) in Performance Specification 2 of Appendix B (Federal Register, Vol. 40, No. 194) shall be as specified by the Technical Secretary.(iii) For the performance evaluation, each concentration measurement shall be of one hour duration. The pollutant gas used to prepare the calibration gas mixtures required under paragraph 2.1, Performance Specifications 2 of Appendix B (Federal Register, Vol. 40, No. 194) and for calibration checks under paragraph .01(8) of this chapter shall be sulfur dioxide.(b) Two-hour average sulfur dioxide concentrations shall be calculated and recorded daily for the twelve consecutive 2-hour periods of each operating day. Each two-hour average shall be determined as the arithmetic mean of the appropriate two contiguous one-hour average sulfur dioxide concentrations provided by the continuous monitoring system installed under subparagraph (a) of this paragraph.(c) For the purpose of reports required under subparagraph .01(7)(c) of this chapter, periods of excess emissions that shall be reported are defined as follows:1. Opacity. Any six-minute period during which the average opacity, as measured by the continuous monitoring system installed under subparagraph (a) of this paragraph, exceeds the standard in subparagraph (5)(a) of this rule.2. Sulfur dioxide. Any two-hour period, as described in subparagraph (b) of this paragraph, during which the average emissions of sulfur dioxide, as measured by the continuous monitoring system installed under subparagraph (a) of this paragraph, exceeds the standard under paragraph (4).(7) Test Methods and Procedures. (a) Sulfur dioxide concentrations shall be determined using the continuous monitoring system installed in accordance with subparagraph (6)(a). One 2-hour average period shall constitute one run.(b) The sampling time for each run shall be at least 60 minutes and the minimum sampling volume shall be 0.85 dscm (30 dscf) except that smaller times or volumes, when necessitated by process variables or other factors, may be approved by the Technical Secretary.Tenn. Comp. R. & Regs. 1200-03-16-.24
Original rule filed January 10, 1977; effective February 9, 1977. Amendment filed September 4, 1981; effective October 19, 1981.Authority: T.C.A. §§ 68-25-105 and 4-5-202.