S.C. Code Regs. § § 61-62.5.3.VII

Current through Register Vol. 48, No. 9, September 27, 2024

Section 61-62.5.3.VII - CALIBRATION AND QUALITY ASSURANCE OF MONITORING DEVICES

A. Provisions of this section or other procedures approved by the Department, unless superseded by federal air regulations, are applicable to monitoring devices required under Section VI or required by permit conditions to establish compliance with this standard. The daily zero and span calibrations for all categories of continuous emission monitors shall comply with the requirements of 40 CFR 60.13(d)(1) and (d)(2) unless superseded by federal air regulations.

B. Specific Monitoring Devices

1. Thermometers/Thermocouples

a. Initial Calibration:

(i) Range: 3 points over the expected range of use.

(ii) Accuracy: plus or minus (+-) 2.5 percent.

(iii) Method: Calibrate using National Institute of Standards and Technology (NIST) traceable methods and manufacturer's specifications or other methods approved by the Department.

b. Quality Assurance:

Conduct weekly single or multipoint reference checks against NIST traceable thermometers/thermocouples or other methods approved by the Department, and recalibrate according to paragraph B.1.a above if this difference is greater than 2.5 percent.

2. Baghouse and Scrubber Pressure Drop Gauges

a. Initial Calibration:

(i) Range: 3 points over the expected range of use.

(ii) Accuracy: +- 5 percent.

(iii) Method: Calibrate against a certified gauge-oil manometer or other methods approved by the Department.

b. Quality Assurance:

Conduct weekly single point reference checks against a certified gauge-oil manometer and recalibrate according to paragraph B.2.a. above if the difference is greater than 5 percent.

3. Waste Flowmeters

a. Initial Calibration:

(i) Range: 3 flowrates over the expected range of use.

(ii) Accuracy: +- 3.0 percent.

(iii) Method: NIST traceable dynamic calibration procedure or other methods approved by the Department.

b. Quality Assurance:

Conduct weekly single point flowrate checks using a gravimetric vs. time procedure as described in manufacturer's specifications or other methods approved by the Department, and recalibrate according to paragraph B.3.a. above if the difference is greater than 3 percent.

4. O₂ Monitor

a. Initial Calibration:

The O₂ monitor must meet Performance Specifications 3, in 40 CFR 60, Appendix B and 40 CFR 60.13(c), (d)(1), (e), (e)(2), and (f).

b. Quality Assurance (To Be Done Quarterly):

Challenge the monitor with low (25 percent of instrument span) and mid (50 percent of instrument span) EPA Protocol Number 1 or NIST traceable audit gases or challenge the monitor as prescribed in 40 CFR 60, Appendix F, Section 5.1.2. Recalibration according to paragraph B.4.a. above is required if the quarterly audit deviates by more than plus or minus (±) 15 percent from the audit gas concentrations. NOTE: Sufficient time for instrument stabilization must be allowed when challenging the monitor with audit gases.

5. CO Monitor

a. Initial Calibration:

The CO monitor must meet Performance Specification 4 or 4A if applicable, in 40 CFR 60, Appendix B, and 40 CFR 60.13(c), (d)(1), (e), (e)(2), and (f).

b. Quality Assurance (To Be Done Quarterly):

Challenge the monitor with low (25 percent of instrument span) and mid (50 percent of instrument span) EPA Protocol Number 1 or NIST traceable audit gases or challenge the monitor as prescribed in 40 CFR 60, Appendix F, Section 5.1.2. Recalibration according to paragraph B.5.a. above is required if the quarterly audit deviates by more than plus or minus (±) 15 percent from the audit gas concentrations. NOTE: Sufficient time for instrument stabilization must be allowed when challenging the monitor with audit gases.

6. CO₂ Monitor

a. Initial Calibration:

The CO₂ monitor must meet Performance Specifications 3, in 40 CFR 60, Appendix B, and 40 CFR 60.13(c), (d)(1), (e), (e)(2), and (f).

b. Quality Assurance (To Be Done Quarterly):

Challenge the monitor with low (25 percent of instrument span) and mid (50 percent of instrument span) EPA Protocol Number 1 or NIST traceable audit gases or challenge the monitor as prescribed in 40 CFR 60, Appendix F, Section 5.1.2. Recalibration according to paragraph B.6.a. above is required if the quarterly audit deviates by more than plus or minus (±) 15 percent from the audit gas concentrations. NOTE: Sufficient time for instrument stabilization must be allowed when challenging the monitor with audit gases.

7. HCl Monitor:

Reserved (HCl continuous emission monitor performance specification currently under EPA development).

8. Opacity Monitor

a. Initial Calibration:

The opacity monitor must meet Performance Specification 1, in 40 CFR 60, Appendix B and 40 CFR 60.13(c), (d)(1), (d)(2), (e), (e)(1), and (f).

b. Quality Assurance (To Be Done Annually):

Must be audited with low, medium and high neutral density filters.

9. THC Monitor

a. Initial Calibration:

The THC monitor must meet the Performance Specification 2.2 in 40 CFR 266, Appendix IX.

b. Quality Assurance and Recalibration:

As specified in Performance Specification 2.2 in 40 CFR 266, Appendix IX.

C. For monitoring devices not specified above, calibration and quality assurance of monitoring devices shall be approved by the Department on a case-by-case basis.

S.C. Code Regs. § 61-62.5.3.VII

Amended by State Register Volume 37, Issue No. 4, eff April 26, 2013.