(Jordan V., Travis S., Gerardo M.)
We removed and replaced the broken pressure regulator for GV7, we haven't tested the new regulator yet (open or try to hard close GV7), but hope to do so soon. During the regulator replacement we installed an isolation valve on the line that feeds GV7, this for upcoming work on this system.
While doing the replacement of the regulator for GV7, we discovered that the pressure regulator for GV8 pneumatic system is broken too, currently it is reporting a max pressure of 100 psi and a low pressure of 80 psi, it rides the instrument air compressor behavior (high and lows). We tried to lower the pressure but the regulator is non-responsive. We'll replace the pressure regulator at the next opportunity. Also, it turns out that the pressure regulators attached to the different pneumatic gate valves are not the same model.
(Travis, Jordan, Dave, Gerardo)
We finally got a chance to actuate GV7, but to the open position, and it took about 40 psi to start moving, it opened without any issues, current pressure to keep it open is 55 psi. Opening the gate valve generated a few alarms, nothing out of what we expected, Dave took care of them.
GV7 will remain open until work at HAM1 is done, then we can attempt to hard close this gate valve, then after a start a vent of the corner.
A very smooth working pressure regulator, it did its job with ease.