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Recommended Practices for the Testing and Verification of Spill, Overfill, Leak Detection and Secondary Containment Equipment at UST Facilities <br />FIGURE 9-2. The ELLD mounted in the submersible <br />turbine pump will alarm on the console when a leak is <br />detected. <br />with a minimum range of 0-60 psig that can <br />measure STP pressure and an adjustable orifice <br />to simulate a leak rate equivalent to 3 gph at 10 <br />psig; <br />• time -measurement device capable of measuring <br />a 1 -second increment; <br />• graduated cylinder for measuring leak rate; <br />• 5 -gallon metal test can. <br />9.2.6 Preparation. <br />NOTE: At locations with master/satellite fuel <br />dispensing installations, the satellite may <br />not be protected by the ELLD. At locations <br />with a master/satellite fueling location, the <br />test should be performed at the most distant <br />satellite dispenser so the entire piping system <br />is included. <br />NOTE ELLDs will turn the STP on and off <br />multiple times while testing the simulated <br />leak. Ensure the test can will not overflow <br />during the test time. <br />Conduct the test at the dispenser that has the high- <br />est elevation in the system. If there is no difference <br />in elevation between dispensers, conduct the test <br />using the dispenser farthest from the STP. <br />Remove from service all dispensers connected to <br />the STP being tested. <br />Verify that the STP relays are operating properly to <br />ensure that the pump cycles on and off correctly. <br />Verify that the system setup parameters are correct <br />(e.g., pipe diameter, pipe length, pipe material of <br />construction, etc.). If any of the setup parameters <br />are not correct, make any necessary changes to <br />bring the system settings within specifications. <br />9.2.6 ELLD Test Procedure. <br />NOTE This procedure describes calibration <br />of the test apparatus leak orifice without the <br />use of a pressure regulator. If you prefer to <br />calibrate the leak orifice with the use of a <br />pressure regulator, refer to the procedure <br />described in Section 9.1.6. <br />1. Shut off power to pump and perform lockout/ <br />tagout procedures on the circuit breakers. <br />2. Bleed line pressure to zero by activating the dis- <br />penser and opening the nozzle, allowing fuel to <br />drain into the test can. After all line pressure has <br />been bled off, hang up the nozzle and close the <br />shear valve. <br />3. Connect .the test apparatus to the shear valve <br />test port at the highest dispenser. If there is no <br />elevation change, connect the test apparatus at <br />the farthest dispenser. . <br />NOTE: If the piping has master/satellite dis- <br />pensers, the test apparatus must be connected <br />to the farthest satellite dispenser. <br />4. Reestablish power to the pump. Open the shear <br />valve and pressurize the line by activating the <br />pump. Confirm that no leaks are present in the <br />test apparatus or the connection to the shear <br />valve test port. <br />5. Dispense product from the dispenser nozzle into <br />the test can to remove all air from the line. <br />6. Close the dispenser nozzle and allow the line to <br />fully pressurize. Confirm that the line pressure <br />observed is the full pump pressure. <br />7. Referencing the full pump pressure observed in <br />Step 6, determine from Table 9-1 the volume of <br />fluid that must be discharged in 60 seconds at <br />full pump pressure to simulate a leak equivalent <br />to 3 gph at 10 psig. <br />8. With the pump running and the line at full pump <br />pressure, slowly open the test apparatus leak <br />orifice and adjust until the flow rate determined <br />in Table 9-1 has been achieved. <br />peLorg 0 <br />