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Sensitivity to Trapped Vapor <br /> 14. (x) According to the vendor, this system can be used even if trapped vapor is present in the <br /> pipeline during a test. (If not excessive) <br /> ( )According to the vendor, this system should not be used if trapped vapor is present in the <br /> pipeline. <br /> 15. The sensitivity of this system to trapped vapor is indicated by the test results summarized in <br /> Table 2. These tests were conducted at * psi with100 ml of vapor trapped in the <br /> line at a pressure of 0 psi. The data and test conditions are reported in Attachment 6. <br /> Tablet. Summary of the Results of Trapped Vapor Tests * (approximately 1.5 times operating pressure) <br /> Test No. AT Induced Leak Rate Measured Leak Rate <br /> (7) (gal/h) (gal/h) <br /> l <br /> +8.56 0.0 al hr PASS <br /> 2 +6.23 0.097 gph @ 40 psi FAIL <br /> 3 -10..18 0.099 gph @ 40 psi F FAIL <br /> P,-rformance Characteristics of the Instrumentation <br /> 16. State below the performance characteristics of the primary measurement system(s) used to <br /> collect the data. (Please specify the units, for example, gallons, inches.) <br /> Quantity Measured: Pressure (psi ) Volume (ml ) Time (sec) <br /> Resolution: 0.1 0.5 0.01 <br /> Precision: 0.1 0.5 0.05 <br /> Accuracy: 0.3 1.0 0.01 <br /> Minimum Detectable Quantity: 0. 1 1.0 0.01 <br /> Response Time: -- -- -- <br /> Threshold is exceeded when the flow rate due to a leak exceeds 0.05 gal/h. <br /> Application of the System <br /> 17. This leak detection system is intended to test pipeline systems that are associated with <br /> underground storage tank facilities, that contain petroleum or other chemical products,that <br /> are typically constructed of fiberglass or steel, and that typically measure 2 in. in diameter <br /> and 200 ft or less in length. The performance estimates are valid when: <br /> • the system that was evaluated has not been substantially changed by subsequent <br /> modifications <br /> • the manufacturer's instructions for using the system are followed <br /> • a mechanical line leak detector <br /> ( ) is present in System has a 3 gph test mode, whose <br /> function replaces that of a mechanical <br /> (x) has been removed from line 1 eak detector. <br /> the pipeline (check both if appropriate) <br /> Pipeline Leak Detection System-Results Form Page 4 of 5 <br />