Performance Specification 3 1/14/2019 While we have taken steps to ensure the accuracy of this Internet version of the document, it is not the official version. To see a complete version including any recent edits, visit: htt05://www.ecfr.aov/cqi- bin/E CFR ?oaae=browse and search under Title 40, Protection of Environment. Performance Specification 3—Specifications and Test Procedures for O2 and CO2 Continuous Emission Monitoring Systems in Stationary Sources 1.0 Scope and Application 1.1 Analytes. Analytes CAS No. Carbon Dioxide (CO2) 124-38-9 Oxygen (O2) 7782-44-7 1.2 Applicability. 1.2.1 This specification is for evaluating acceptability of O2 and CO2 continuous emission monitoring systems (CEMS) at the time of installation or soon after and whenever specified in an applicable subpart of the regulations. This specification applies to O2 or CO2 monitors that are not included under Performance Specification 2 (PS 2). 1.2.2 This specification is not designed to evaluate the installed CEMS performance over an extended period of time, nor does it identify specific calibration techniques and other auxiliary procedures to assess the CEMS performance. The source owner or operator, is responsible to calibrate, maintain, and operate the CEMS properly. The Administrator may require, under section 114 of the Act, the operator to conduct CEMS performance evaluations at other times besides the initial test to evaluate the CEMS performance. See 40 CFR part 60, section 60.13(c). 1.2.3 The definitions, installation and measurement location specifications, calculations and data analysis, and references are the same as in PS 2, sections 3, 8.1, 12, and 17, respectively, and also apply to O2 and CO2 CEMS under this specification. The performance and equipment specifications and the relative accuracy (RA) test procedures for O2 and CO2 CEMS do not differ from those for SO2 and NOx CEMS (see PS 2), except as noted below. 2.0 Summary of Performance Specification The RA and calibration drift (CD) tests are conducted to determine conformance of the CEMS to the specification. 3.0 Definitions Same as in section 3.0 of PS 2. 1 ------- Performance Specification 3 1/14/2019 4.0 Interferences [Reserved] 5.0 Safety This performance specification may involve hazardous materials, operations, and equipment. This performance specification may not address all of the safety problems associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and determine the applicable regulatory limitations prior to performing this performance specification. The CEMS users manual should be consulted for specific precautions to be taken with regard to the analytical procedures. 6.0 Equipment and Supplies Same as section 6.0 of PS2. 7.0 Reagents and Standards Same as section 7.0 of PS2. 8.0 Sample Collection, Preservation, Storage, and Transport 8.1 Relative Accuracy Test Procedure. Sampling Strategy for reference method (RM) Tests, Correlation of RM and CEMS Data, and Number of RM Tests. Same as PS 2, sections 8.4.3, 8.4.5, and 8.4.4, respectively. 8.2 Reference Method. Unless otherwise specified in an applicable subpart of the regulations, Method 3B or other approved alternative is the RM for O2 or CO2. 9.0 Quality Control [Reserved] 10.0 Calibration and Standardization [Reserved] 11.0 Analytical Procedure Sample collection and analyses are concurrent for this performance specification (see section 8). Refer to the RM for specific analytical procedures. 12.0 Calculations and Data Analysis Calculate the RA using equations 3-1 and 3-2. Summarize the results on a data sheet similar to that shown in Figure 2.2 of PS2. RM Eq. 3-1 2 ------- Performance Specification 3 1/14/2019 Where: IM = Absolute value of the mean of the differences (from Equation 2-3 of Performance Specification 2). |CC| = Absolute value of the confidence coefficient (from Equation 2-5 of Performance Specification 2). RM = Average Reference Method Value RA = \RM - CEMS | Eq. 3-2 RM = Average Reference Method Value CEMS = Average CEMS Value 13.0 Method Performance 13.1 Calibration Drift Performance Specification. The CEMS calibration must not drift by more than 0.5 percent O2 or CO2 from the reference value of the gas, gas cell, or optical filter. 13.2 CEMS Relative Accuracy Performance Specification. The RA of the CEMS must be no greater than 20.0 percent of the mean value of the reference method (RM) data when calculated using equation 3-1. The results are also acceptable if the result of Equation 3-2 is less than or equal to 1.0 percent O2 (or CO2). 14.0 Pollution Prevention [Reserved] 15.0 Waste Management [Reserved] 16.0 References Same as in section 17.0 of PS 2. 17.0 Tables, Diagrams, Flowcharts, and Validation Data [Reserved] 3 ------- |