7011.1725 Performance Test Procedures


Published: 2015

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7011.1725 PERFORMANCE TEST PROCEDURES.


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Subpart 1.

In general.

Performance tests shall be conducted according to the requirements of this part and parts 7017.2001 to 7017.2060.


§
Subp. 2.

Special procedures.

For Method 7, the same site shall be selected according to Method 1 and the sampling point shall be the centroid of the stack or duct or at a point no closer to the walls than 1 meter (3.28 feet). Each run shall consist of at least four grab samples taken at approximately 15-minute intervals. The arithmetic mean of the samples shall constitute the run value. A velocity traverse shall be performed once per run.
Acid production rate, expressed in metric tons per hour of 100 percent nitric acid, shall be determined during each testing period by suitable methods and shall be confirmed by a material balance over the production system.
For each run, nitrogen oxides, expressed in lb/ton of 100 percent nitric acid (kg/metric ton), shall be determined by dividing the emission rate in lb/hr (kg/hr) by the acid production rate. The emission rate shall be determined by the equation:
Qs x c = lb/hr (kg/hr)
where Qs = volumetric flow rate of the effluent in dscf/hr (dscm/hr), as determined in accordance with part 7011.1720, item B, and c = NO2 concentration in lb/dscf (kg/dscm), as determined in accordance with part 7011.1720, item D.