40 CFR 91.324 - Analyzer leakage check.
(1) Check any location within the analysis system where a vacuum leak could affect the test results.
(2) The maximum allowable leakage rate on the vacuum side is 0.5 percent of the in-use flow rate for the portion of the system being checked. The analyzer flows and bypass flows may be used to estimate the in-use flow rates.
(3) The sample probe and the connection between the sample probe and valve V2 (see Figure 1 in appendix B of this subpart) may be excluded from the leak check.
Title 40 published on 2014-07-01
no entries appear in the Federal Register after this date.