Operation
Operating
2007-9015-001
03-2014
7.4.2
Air flush procedure for the evacuation line.
● Stop the pump and close the
discharge guillotine valve;
● Close the gate valve on the riser;
● Relieve gas pressure in the riser by
opening the relief valve;
Gate valve
6” [152 mm]
Relief
valve
Flush valve
Close
Open
Straw bullet
Warning!
Make sure the pressure is relieved completely before removing the
cap. The compressed air inside pipes would propel the cap with force.
Before removing the cap, open the ball valve to relieve pressure.
Note!
If you are flushing with air only skip this step.
● Remove the cap and put roughly 2'
[60 cm] of straw inside the riser pipe
without packing it;
● Reinstall the cap and secure it with
nuts;
Straw
Air flush
● Close the pressure relief valve;
● Open the gate valve;
● Open the air injection valve for 10 seconds;
● Close the air injection valve, then close the gate valve.