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Entry  Mon Jul 22 16:30:31 2013, Koji, Update, General, Vent preparation 
    Reply  Mon Jul 22 16:56:14 2013, Jenne, Update, General, Vent preparation - In progress 
       Reply  Mon Jul 22 17:03:25 2013, Jenne, Update, General, MC spot positions MCdecenter_22July2013.png
          Reply  Tue Jul 23 04:26:54 2013, Jenne, Update, General, MC spot positions MCdecenter_22July2013_lowpower.png
       Reply  Mon Jul 22 18:49:16 2013, Jenne, Update, General, Vent preparation - In progress 
       Reply  Mon Jul 22 21:23:04 2013, manasa, Update, General, Vent preparation - In progress 
          Reply  Tue Jul 23 03:10:57 2013, Koji, Update, General, Vent preparation - In progress OSEM_RECORD.pngOPLEVS.png
          Reply  Tue Jul 23 03:43:32 2013, manasa, Update, General, Vent preparation - In progress 
             Reply  Tue Jul 23 04:22:03 2013, Koji, Update, General, Vent preparation - In progress 
       Reply  Tue Jul 23 04:31:36 2013, Jenne, Update, General, Vent preparation - Ready for Vent 
          Reply  Tue Jul 23 08:21:31 2013, Steve, Update, VAC, Vent has started beforVent.pngstartVent.png
             Reply  Tue Jul 23 14:00:03 2013, Steve, Update, VAC, the vent is completed Atm.png5cyl.pngventSum1d.png
Message ID: 8907     Entry time: Tue Jul 23 14:00:03 2013     In reply to: 8904
Author: Steve 
Type: Update 
Category: VAC 
Subject: the vent is completed 

 The 40m IFO has reached  atmospher in 5 hours. It is ready to open chamber condition. The RGA is pumped with the maglev.

P1 pirani gauge is contact dependent as you see it on the linear plot It will be replaced during this vent.

The venting speed was 2-4 Torr / min

Atm2 shows how the BS is sensing the venting air cylinder changes. 

The 4th cylinder of instrument  grade air  bump is overlapping with our janitor working at the BS chamber.

 

 

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Attachment 2: 5cyl.png  25 kB  Uploaded Tue Jul 23 17:21:48 2013  | Hide | Hide all | Show all
5cyl.png
Attachment 3: ventSum1d.png  43 kB  Uploaded Tue Jul 23 17:48:37 2013  | Show | Hide all | Show all
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