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Message ID: 14367     Entry time: Wed Dec 19 14:19:15 2018
Author: Koji 
Type: Summary 
Category: VAC 
Subject: Plan for pumpoing down test 

We still need elaborated test procedure posted

12/29 Wed

  • Jon continues to work on valve actuator tests.
  • Chub continues to work on wiring / fixing wiring.
  • At the end of the day Jon is going to send out a notification email of "GO"/"NO GO" for pumping.

 

12/30 Thu

  • 9AM: Start closing two doors unless Jon gives us NO GO sign.
  • 10AM: Start pumping down
    • Test roughing pump capability via new control system
    • (Independently) Test turbo rotating procedure. This time we will not open the gate valve between the TP1 and the main volume. This is because we want to take care of the backing turbo loads while we gradually open the gate valve. This will take more hours to be done and we will not be able to finish this test by the end of Thu.
    • At the end of the procedure, we isolate the main volume, stop all the pumps, and vent the roghing pumps to save them from the oil backstream.

gautam: Koji and I were just staring at the vacuum screen, and realized that the drypumps, which are the backing pumps for TP2 and TP3, are not reflected on the MEDM screen. This should be rectified.

Steve also mentioned that the new small turbo controller does not directly interface with the drypump. So we need some system to delay the starting of the turbo itself, once the drypump has been engaged. Does this system exist?

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