Jim & I put this PS back in the mix after it was off for a couple weeks for routine maintenance--just cleaned it up, checked the spider, and see directly how bad the pump seal leak was.

Attached is the 30 minutes of the servo'd platform positions and the local inertial L4Cs.  You might believe the spike seen on the IPS_Z is correlated with the pressure drop (chans 15 & 16) when we valved in the still slow moving pump.  But that glitch is not exceptional considering others occurring.  The inertial vertical sensors do see some noise along with the Z IPS when the pump is finally up to speed and the servo drops the drive down to put the pressure on setpoint.  It makes sense that the Z sensors would see this DC adjustment as it is the only DOF where the sign of all the sensors are the same (except horz pringle-not shown.) All other dofs have opposite signs cancelling DC shifts this change in DC pressure would produce.

Putting the PS back in service closes WP 5986.