COMPLIANCE INFO 1998 - 2007 - Laserfiche WebLink

Home Browse Search

do not dispense any fuel. Wait apoiximately 2-3 minutes. If the line is leafte s stem opening the STP MI_D, then purge the air from all dispensers as in step 11 abovemp will pressurize the NOTE This leak detector performs a line leak test within about 3-4 seconds from the time the submersible pump is turned on at the dispenser. Air or vapor in the system will cause this time to be longer in proportion to the amount of air or vapor in the lines. If the nozzle is o ened before the com letion of the line test the leak detector will detect this o enin as a leak and restricted flow will result. Close the nozzle for a period of time to allow completion of the line test, and the leak detector will allow full flow again, provided there is no other escape of fuel, STP-MLD LINE LEAK TESTING NOTE To properly check a line leak detector the following is required. a graduated cylinder (usually graduated in milliliters) of approximately 300 ml volume, a test fixture which allows a leak of 3 GPH at 10 PSI (see Figure 1 and a stop watch or a watch with a sweep second hand. ) LEAK DETECTdR TESTING SETUP 12. Turn the pump off at the load center, relieve the line pressure, and then remove the pipe plug in the shear-valve. Make adequate provision to trap any liquid that escapes to prevent environmental contamination. Install test fixture (pressure gage, leak valve and pressure valve) into the dispenser shear-valve port, see Figure 1. The test fixture will be Q used to introduce a 3 GPH leak @ 10 PSI. DISPENSER 13. With the leak valve closed, turn on the submersible Pump at the load center and at the dispenser and look for leaks at the port of the shear-valve. D-6a PSI PRESSURE GAUGE NOTE: If there are any leaks, immediately shut the pump off 3/R•LEAK VALVE at both the dispenser and at the load center, tag and lock out the breaker, and eliminate the leaks. Repeat step 13 to verify. 3,8,PRESSURE VALUE 14. Turn the pump off at the dispenser and open both GRADUATED CYLINDER valves, draining the fluid into a suitable container, 3/B'TUBING SKAR VALVE and observe the r p essure dropping to zero. Continue draining until there is no more product wTE:A STOP PATCH AND A�AScoming out. Close the leak valve, turn the pump on CAN ARE AL50 REQUIRED. ERGM STP at the dispenser and observe the pressure gauge. The pressure should increase quickly up to 12 to 18 PSI, and hesitate for 1-4 seconds or longer if there is air or vapor trapped in the system, and then increase to full pump pressure, Figure 1 15. With the submersible pump on, adjust the leak valve and pressure valve simultaneously until 10 PSI and 3 gph or less are attained, while draining the fluid into a suitable container. Catch the output product into a graduated ' cylinder for 60 seconds (or the equivalent product measurement for a shorter time period, i.e., 94 milliliters at 30 seconds = 188 milliliters per 60 seconds). Turn off the pump and calculate the leak rate detected as follows: Leak Rate GPH = ((milliliters of fuel Caught 160 seconds) x .95) NOTE. The detected leak rate must be set to 3 GPH or less per EPA standards. If the leak rate needs to be adjusted, repeat step 15 while increasing or decreasing the leak rate and maintaining 10 PSI at the pressure gage. 6