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MERC – Membrane Filter Test Plan
13
d. If possible, verify MERC-provided incoming and outgoing connections
e. Any other installation requirements
2. If available, run potable water through the test skid to:
a. Check for leaks and repair
b. Verify gauges/instruments work properly
c. Check operation of the low-level TSS test set-up.
3. Record any necessary changes to the test procedure
4. Make a list of any additional piping, connections, or other equipment required
Summary Test Procedure
TEST #1
1.
Put on safety glasses and any other required safety gear.
2.
Complete any piping or other equipment changes determined during the dry run.
3.
Verify that the ballast water is ready to be pumped to the test skid and that all connections
have been made to the skid and from the skid to drain.
4.
Fill and test the system for leaks prior to installing the test filter
a.
Open the ¾” valve on the exit of the test skid
b.
Verify that the drain valves on the bottom of the housings are closed
c.
Verify that the sample valves are closed
d.
Open the vent valves on all of the housings. Verify that all the vent line tubing will drain
to a bucket or drain.
e.
Start pump to send ballast water to the test skid.
f.
Slowly open the 1” incoming ball valve to the skid. Adjust flow to about 1-2 gpm and
slowly fill the system until water is observed flowing from all the vent lines. You will
likely need to throttle the ¾” outlet ball valve to fully fill the system.
g.
Once the system is filled, open the incoming valve and throttle the outlet valve until the
system pressure reads about 30 psi. Check for any major leaks. Some small leaks may be
acceptable if they do not cause a safety hazard.
h.
Shut the system down and repair any leaks. Repeat leak test procedure, if required.
5.
Install Filter #1 (20” 0.1um) in the last housing in the series.
a.
Open the vent valve on the last housing (#4)
b.
Open the drain valve on the housing to drain the water.
c.
Unscrew and remove the bowl
d.
Wet the o-rings on the filter with water
e.
Insert the filter into the filter housing by pushing and twisting the filter slightly until it
seats in the housing.
f.
Replace the bowl and close the drain valve.
g.
Open the ¾” exit valve on the filter skid
h.
Start the feed pump to the filter skid and open the 1” incoming valve slightly and adjust
the flow to fill the system at about 1 -2 gpm.
i.
When water is consistantly flowing from the vent on the filter housing, close the vent.
j.
Adjust the outtlet valve to pressurize the filter skid to about 30 psi and maintain this for
about 2 minutes. This will ensure that the filter is fully wet.
k.
Vent all the housings to be sure there is no air in the system.