NR 440.40(4)(b)(b) The owner or operator of any triple superphosphate plant shall maintain a daily record of equivalent P2O5 feed by first determining the total mass rate in Mg/hr of phosphorus-bearing feed using a flow monitoring device meeting the requirements of par. (a) and then by proceeding according to sub. (5) (b) 3.
NR 440.40(4)(c)(c) The owner or operator of any triple superphosphate plant 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 the process scrubbing system. The monitoring device shall have an accuracy of ± 5% over its operating range.
NR 440.40(5)(5)Test methods and procedures.
NR 440.40(5)(a)(a) 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 440.40(5)(b)(b) The owner or operator shall determine compliance with the total fluorides standard in sub. (3) as follows:
NR 440.40(5)(b)1.1. The emission rate (E) of total fluorides shall be computed for each run using the following equation:
where:
E is the emission rate of total fluorides, g/Mg (lb/ton) of equivalent P2O5 feed
Csi is the concentration of total fluorides from emission point “i”, mg/dscm (gr/dscf)
Qsdi is the volumetric flow rate of effluent gas from emission point “i”, dscm/hr (dscf/hr)
N is the number of emission points associated with the affected facility
P is the equivalent P2O5 feed rate, Mghr (ton/hr)
K is the conversion factor, 1000 mg/g (7000 gr/lb)
NR 440.40(5)(b)2.2. Method 13A or 13B shall be used to determine the total fluorides concentration (Csi) and volumetric flow rate (Qsdi) of the effluent gas from each of the emission points. The sampling shall be at least 60 minutes and 0.85 dscm (30 dscf).
NR 440.40(5)(b)3.3. The equivalent P2O5 feed rate (P) shall be computed for each run using the following equation:
where:
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.