Methods and procedures for determining compliance using instrumentation of air pollution control equipment and source processes

Methods and procedures for determining compliance using instrumentation of air pollution control equipment and source processes. (1e) In this section, “accuracy” or “accurate” means the closeness of an indicator or reading of a measurement device to the actual value of the quantity being measured; usually expressed as ± percent of the full-scale output or reading. (1m) The department may require the owner or operator of a source to install and operate instrumentation to monitor the operation of the source and air pollution control equipment. (1s) The department may require, in an operation permit, the installation and operation of instrumentation to monitor the operation of the source and air pollution control equipment to meet the requirements under s. NR 407.09 (1) (c) 1. and (4) (a) 1. (2m) The department may require, in an air pollution control permit or order, the measurement of source or air pollution control operational variables if the department determines that these requirements are necessary to ensure that the source does not exceed an applicable emission limit or to ensure that the requirements of chs. NR 400 to 499 , standards of performance for new stationary sources under section 111 of the Act ( 42 USC 7411 ), or emission standards for hazardous air contaminants under section 112 of the Act ( 42 USC 7412 ) are met. (3) When the department requires instrumentation to monitor the operation of air pollution control equipment, or to monitor source performance, the instrument shall measure operational variables with the following accuracy: (a) The temperature monitoring device shall have an accuracy of 0.5 percent of the temperature being measured in degrees Fahrenheit or ± 5°F of the temperature being measured, or the equivalent in degrees Celsius (centigrade), whichever is greater. (b) The pressure drop monitoring device shall be accurate to within 5 percent of the pressure drop being measured. (c) The current, voltage, flow, or pH monitoring device shall be accurate to within 5 percent of the specific variable being measured. (d) Unless otherwise specified by the department, all other parameter monitoring devices shall be accurate to within 5 percent of the specific variable being measured. (4) All instruments used for measuring source or air pollution control equipment operational variables shall be calibrated, replaced, or validated at a frequency required by an applicable federal requirement, or, if there is no minimum frequency required by an applicable federal requirement, calibrations, replacements, or validations shall be at least as frequent as one of the following: (a) Yearly. (b) A frequency based on written manufacturer recommendations. (c) A frequency established by operational history that demonstrates compliance with the instrument accuracy requirements under sub. (3) . (5m) The owner or operator shall maintain records of the accuracy and calibrations, replacements, and validations for all instruments used for measuring source or air pollution control equipment operational variables, including the date the calibration, replacement, or validation was conducted and the accuracy of the monitoring device in percent of the variable being measured. (6m) No person may render inaccurate any monitoring device or method required under this chapter or in an air pollution control permit.