Code of Federal Regulations (Last Updated: May 6, 2024) |
Title 40 - Protection of Environment |
Chapter I - Environmental Protection Agency |
SubChapter C - Air Programs |
Part 89 - Control of Emissions from New and in-Use Nonroad Compression-Ignition Engines |
Subpart D - Emission Test Equipment Provisions |
§ 89.311 - Analyzer calibration frequency.
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§ 89.311 Analyzer calibration frequency.
(a) Prior to initial use and after major repairs, bench check each analyzer (see § 89.315).
(c) At least monthly, or after any maintenance which could alter calibration, the following calibrations and checks are performed.
(1) Leak check the vacuum side of the system (see § 89.316).
(2) Check that the analysis system response time has been measured and accounted for.
(3) Verify that the automatic data collection system (if used) meets the requirements found in Table 3 in appendix A of this subpart.
(4) Check the fuel flow measurement instrument to insure that the specifications in Table 3 in appendix A of this subpart are met.
(d) Verify that all NDIR analyzers meet the water rejection ratio and the CO2 rejection ratio as specified in § 89.318.
(e) Verify that the dynamometer test stand and power output instrumentation meet the specifications in Table 3 in appendix A of this subpart.
[59 FR 31335, June 17, 1994. Redesignated at 63 FR 56995, Oct. 23, 1998]