Franklin Fueling Systems TS-550/TS-5000 consoles Secondary Containment Monitoring - Manual (Page 18)

15
3. Install a vacuum gauge, regulator and isolation / shut-off ball valve in-line, onto the vacuum pump. With the ball valve
closed, power on the vacuum pump. Adjust the regulator to 6.5" – 7" Hg maximum. Power the vacuum pump off.
4. Remove the plug in the leak generator port on the SCCM. Connect the vacuum pump to this port.
5. Power the vacuum pump on. Open the isolation ball valve slowly to evacuate the containment area to 6" Hg. Close the
isolation ball valve:
• If the vacuum level does not increase after 30 seconds while the vacuum pump is running; large
containments may take up to 10 minutes. Inspect each component for leaks.
• If the gauge drops below 6" Hg immediately after closing the valve then steadies before zero.
Slowly open the isolation ball valve again to evacuate the containment to 6" Hg. Repeat as
necessary until containment remains at 6" Hg and close the isolation ball valve.
• If the gauge immediately drops to zero. This indicates that a leak exists. All leaks must be
identified and repaired before continuing this test.
Note: Vacuum leaks can be identified by pressurizing the containment area per the manufacturer’s specified levels, then
spraying a solution of water and liquid soap on connections and fittings. Consistent bubbling on soaped connec-
tions/fittings will give a visual indication of the source of a leak. Consult the manufacturer’s documentation for
appropriate pressure levels.
6. Once a stable vacuum level is reached (4.5" – 7" Hg on the vacuum gauge
in-line with the vacuum pump), record the level. Use the table to the right
to determine the required wait time. The containment vacuum level should
remain stable throughout the entire wait time; the vacuum pump may be shut
off at this point.
If the vacuum level drops more than 1" Hg during the required wait time, then
the containment failed the test. All leaks must be identified and repaired first,
then the Containment Tightness Test should be repeated until it successfully
completes.
Containment Wait Time Table
Containment
Volume
Wait Time
0.25 – 5 gal 15 min
5 – 50 gal 30 min
50 – 100 gal 60 min
100 – 250 gal 2 hr
250 – 500 gal 4 hr
7. If a vacuum gauge has been installed at the end of the system, compare the
gauge reading with the console. If the measurements are not within ±2" Hg, a blockage may exist within the
containment and/or between the SCCM and vacuum gauge. All blockages must be identified and corrected. Once the
blockage is corrected, restart the Containment Tightness Test.
8. Uninstall the vacuum pump, regulator, isolation / shut-off valve and vacuum gauges at this time. Continue on to the
STP Vacuum Test in the next section. Do not replace the Leak Generator Port Plug.