Mp is the total mass flow rate of phosphorus-bearing feed, Mg/hr (ton/hr)
Rp is the P2O5 content, decimal fraction
NR 440.40(5)(b)3.a.a. The accountability system of sub. (4) (a) shall be used to determine the mass flow rate (Mp) of the phosphorus-bearing feed.
NR 440.40(5)(b)3.b.b. The Association of Official Analytical Chemists (AOAC) Method 9, incorporated by reference in s. NR 440.17, shall be used to determine the P2O5 content (Rp) of the feed.
NR 440.40 HistoryHistory: Cr. Register, January, 1984, No. 337, eff. 2-1-84; am. (2) (intro.), Register, September, 1990, No. 417, eff. 10-1-90; am (2) (intro.) and (4) (b), r. and recr. (5), Register, July, 1993, No. 451, eff. 8-1-93; CR 06-109: renum. (3) (a) to be (3) and am., am. (4) (b) and (5) (b) 1. and 3. (intro.) Register May 2008 No. 629, eff. 6-1-08.
NR 440.41NR 440.41Phosphate fertilizer industry: granular triple superphosphate storage facilities.
NR 440.41(1)(1)Applicability and designation of affected facility.
NR 440.41(1)(a)(a) The affected facility to which the provisions of this section apply is each granular triple superphosphate storage facility. For the purpose of this section, the affected facility includes any combination of: storage or curing piles, conveyors, elevators, screens and mills.
NR 440.41(1)(b)(b) Any facility under par. (a) that commences construction or modification after October 22, 1974, is subject to the requirements of this section.
NR 440.41(2)(2)Definitions. As used in this section, terms not defined in this subsection have the meanings given in s. NR 440.02.
NR 440.41(2)(a)(a) “Equivalent P2O5 stored” means the quantity of phosphorus, expressed as phosphorus pentoxide, being cured or stored in the affected facility.
NR 440.41(2)(b)(b) “Fresh granular triple superphosphate” means granular triple superphosphate produced within the preceding 72 hours.
NR 440.41(2)(c)(c) “Granular triple superphosphate storage facility” means any facility curing or storing fresh granular triple superphosphate.
NR 440.41(2)(d)(d) “Total fluorides” means elemental fluorine and all fluoride compounds as measured by reference methods specified in sub. (5), or equivalent or alternative methods.
NR 440.41(3)(3)Standard for fluorides.
NR 440.41(3)(a)(a) On and after the date on which the performance test required to be conducted by s. NR 440.08 is completed, no owner or operator subject to the provisions of this section may cause to be discharged into the atmosphere from any affected facility any gases which contain total fluorides in excess of 0.25 g/hr/Mg of equivalent P2O5 stored (5.0 × 10-4 lb/hr/ton of equivalent P2O5 stored).
NR 440.41(3)(b)(b) No owner or operator subject to the provisions of this section shall ship fresh granular triple superphospate from an affected facility.
NR 440.41(4)(4)Monitoring of operations.
NR 440.41(4)(a)(a) The owner or operator of any granular triple superphosphate storage facility subject to the provisions of this section shall maintain an accurate account of triple superphosphate in storage to permit the determination of the amount of equivalent P2O5 stored.
NR 440.41(4)(b)(b) The owner or operator of any granular triple superphosphate storage facility subject to the provisions of this section shall maintain a daily record of total equivalent P2O5 stored by multiplying the percentage P2O5 content, as determined by sub. (5) (c) 3., times the total mass of granular triple superphosphate stored.
NR 440.41(4)(c)(c) The owner or operator of any granular triple superphosphate storage facility subject to the provisions of this section shall install, calibrate, maintain and operate a monitoring device which continuously measures and permanently records the total pressure drop across any process scrubbing system. The monitoring device shall have an accuracy of ±5% over its operating range.
NR 440.41(4)(d)(d) The owner or operator of any granular triple superphosphate storage facility subject to the provisions of this section shall develop for approval by the department a site-specific methodology including sufficient recordkeeping for the purposes of demonstrating compliance with sub. (3) (b).
NR 440.41(5)(5)Test methods and procedures.
NR 440.41(5)(a)(a) The owner or operator shall conduct performance tests required in s. NR 440.08 only when the following quantities of products are being cured or stored in the facility.
NR 440.41(5)(a)1.1. Total granular triple superphosphate is at least 10% of the building capacity and
NR 440.41(5)(a)2.2. Fresh granular triple superphosphate is at least 6% of the total amount of triple superphosphate, or
NR 440.41(5)(a)3.3. If the provision in subd. 2. exceeds production capabilities for fresh granular triple superphosphate, fresh granular triple superphosphate is equal to at least 5 days maximum production.
NR 440.41(5)(b)(b) In conducting the performance tests required in s. NR 440.08, the owner or operator shall use as reference methods and procedures the test methods in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 440.17, or other methods and procedures as specified in this subsection, except as provided in s. NR 440.08 (2).
NR 440.41(5)(c)(c) The owner or operator shall determine compliance with the total fluorides standard in sub. (3) as follows: