During flooding periods, when drainage gates are closed, pumping operations play a major role in efficiently reducing flood damage.
Run-in pulse is used to ensure MWD measured in the stable voltage condition so as to ensure the accuracy of the measurement data, and Run-in pulse is also a time window for ground and down-hole communications, by opening or closing the pump, it can change the speed of data transmission of underground exploring tube.
The original observation of Snow sufficed to state that something in the water supplied by one company potentially caused cholera and to take appropriate action (closing the pump), and there was no need to wait until a mechanism of action had been demonstrated (thereby probably sacrificing the lives of thousands of people).
When the pumping pressure exceeds the strength of the formation rock, fractures are induced and propagated into the formation, and then the propping agent is pumped into the fractures to keep them from closing after pumping pressure is released.
In the simplest design, all three stages are in the same vessel, with a single valve to close the pump off from the tokamak during regeneration.
Step III (RP separation): valves 3 and 4 were set back to position A, the two-way valve was closed, and pump B was set to 8,000 psi (constant pressure).
But there was Percival, the Anaheim closer, pumping a high fastball past Rich Aurilia for the final out, pumping his fist and embracing his giddy teammates after the Angels, those resilient Angels, staged a rally that shocked the Giants, 6-5, in Game 6 of the World Series and evened it at three games apiece.
The blade is hollow and acts as an inlet valve, closing off the pump from the system when the rotor is at top centre.
The breaks in the levees have been closed, the pumps are running and the water here in New Orleans is receding by the hour.
The bottom outlets were closed while pumping cell mixture.
