View all text of Subpart PP [§ 60.420 - § 60.424]
§ 60.424 - Test methods and procedures.
(a) In conducting the performance tests required in § 60.8, the owner or operator shall use as reference methods and procedures the test methods in appendix A of this part or other methods and procedures as specified in this section, except as provided in § 60.8(b).
(b) The owner or operator shall determine compliance with the particulate matter standards in § 60.422 as follows:
(1) The emission rate (E) of particulate matter shall be computed for each run using the following equation:
E = (c(2) Method 5 shall be used to determine the particulate matter concentration (c
(3) Direct measurement using product weigh scales, or the result of computations using a material balance, shall be used to determine the rate (P) of the ammonium sulfate production. If production rate is determined by material balance, the following equations shall be used:
(i) For synthetic and coke oven by-product ammonium sulfate plants:
P = ABCK 1/4 where: A = sulfuric aid flow rate to the reactor/crystallizer averaged over the time-period taken to conduct the run, liter/min. B = acid density (a function of acid strength and temperature), g/cc. C = acid strength, decimal fraction. K 1/4 = conversion factor, 0.0808 (Mg-min-cc)/(g-hr-liter) [0.0891 (ton-min-cc)/(g-hr-liter)].(ii) For caprolactam by-product ammonium sulfate plants:
P = DEFK′ where: D = total combined feed stream flow rate to the ammonium crystallizer before the point where any recycle streams enter the stream averaged over the time-period taken to conduct the test run, liter/min. E = density of the process stream solution, g/liter. F= percent mass of ammonium sulfate in the process solution, decimal fraction. K′ = conversion factor, 6.0 × 10(4) Method 9 and the procedures in § 60.11 shall be used to determine the opacity.