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Message ID: 550     Entry time: Wednesday, November 16, 2016, 10:50
Author: Aaron Schmidt 
Target/No.#:  
Source:  
Station:  
Module:  
Target Oven W.O#:  
Heat Shield W.O#:  
Status:  
Subject: Pump down empty chamber. 

Wednesday, November 16, 2016, 10:50: Begin roughing.

Wednesday, November 16, 2016, 11:52: Turbo pumps on.

*Note* Unusual sound noticed right at the start up of TSG : TP1B. It was first noticed prior to venting UC#18. The sound only lasts 10-15 seconds within a minute of starting the pump. An odd whine with tapping sound. Operation is otherwise normal, but will continue to monitor the pump.

Wednesday, November 16, 2016, 11:57: Ion gauge on.

Wednesday, November 16, 2016, 12:03: Both pumps are at speed


Thursday, November 24, 2016, 10:08: Ion gauge & Turbo pumps off.

Thursday, November 24, 2016, 11:07: Venting.

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