40 CFR 90.328 - Measurement equipment accuracy/calibration frequency table.
(a) The accuracy of measurements must be such that the maximum tolerances shown in table 2 in appendix A of this subpart are not exceeded.
(b) All equipment and analyzers must be calibrated according to the frequencies shown in table 2 in appendix A of this subpart.
(c) Prior to initial use and after major repairs, bench check each analyzer (see § 90.323).
(e) At least monthly, or after any maintenance which could alter calibration, perform the following calibrations and checks.
(1) Leak check the vacuum side of the system (see § 90.324(a)).
(2) Verify that the automatic data collection system (if used) meets the requirements found in table 2 in appendix A of this subpart.
(3) Check the fuel flow measurement instrument to insure that the specifications in table 2 in appendix A of this subpart are met.
(f) Verify that all NDIR analyzers meet the water rejection ratio and the CO2 rejection ratio as specified in § 90.325.
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.